Patent Description:
In some examples, a wireless multiple-access communication system may include a number of base stations, each simultaneously supporting communication for multiple communication devices, otherwise known as user equipment (UE). In a LTE or LTE-Advanced (LTE-A) network, a set of one or more base stations may define an eNodeB (eNB). In other examples (e.g., in a next generation new radio (NR) or <NUM> network), a wireless multiple access communication system may include a number of smart radio heads (RHs) in communication with a number of access node controllers (ANCs), where a set of one or more RHs, in communication with an ANC, defines a base station (e.g., an eNB or gNB). A base station may communicate with a set of UEs on downlink (DL) channels (e.g., for transmissions from a base station to a UE) and uplink (UL) channels (e.g., for transmissions from a UE to a base station).

A base station in some LTE or NR deployments may transmit to one or more UEs using different length transmission time intervals (TTIs) that may be selected based on a service that is being provided. In some examples, a reduced length TTI may support some low latency wireless services that provide low latency with high reliability for wireless transmissions of the low latency or mission critical services. Reduced length TTIs may be a subset of a longer TTI such as a slot-TTI, and in some cases, low latency services using reduced length TTIs may puncture other services that may have longer TTIs. Such puncturing may result in portions of transmissions of the longer TTI service not being received at the receiver of the transmission. <NPL>discusses URLLC and eMBB multiplexing and mini-slot designs including pre-emption multiplexing of eMBB and URLLC in DL and UL. <NPL> discusses pre-emption multiplexing of eMBB and URLLC in DL and inter-cell interefefrence considerations for eMBB/URLLC multiplexing.

Aspects of the invention are set out in the appended set of claims.

The invention made is disclosed in the embodiments relating to <FIG> and <FIG>. Some wireless communications systems may support different types of wireless services that may use different transmission time intervals (TTIs), such as enhanced mobile broadband (eMBB) communications and low latency communications (e.g., ultra reliable low latency communications (URLLC)). To facilitate low latency communications, a base station or user equipment (UE) may identify resources allocated for eMBB communications, and may reassign (or puncture) these resources for low latency communications. In certain deployments, low latency communications may be transmitted in a periodic manner. For example, in a factory automation deployment low latency communications may have a known periodicity. In such cases, certain periodic resources may be reserved for low latency communications, and a base station or UE may use such periodic low latency resources for low latency transmissions. The UE and base station may rate match higher latency communications around the periodic low latency resources, and thus the higher latency communications may have a lower likelihood of being punctured.

Furthermore, as indicated above, the base station may transmit an indication of the reassigned (or punctured) resources to one or more UEs. Specifically, the base station may transmit an indication of the reassigned resources over a designated indication channel during a time resource (e.g., a mini-slot time resource) that is being reassigned (e.g., a current indication). The current indication may be provided in a current indication channel and may include limited information indicating the location of the reassigned resources (or punctured resources). In cases where periodic low latency resources are identified, the indication channel may not be transmitted in the time resources (e.g., a mini-slot) of the periodic low latency resources, and thus a UE may not monitor such resources for an indication channel transmission and may thereby consume fewer processing and power resources. In the event that a low latency transmission is transmitted outside of the periodic low latency resources, the higher latency communications may be punctured and an indication of the puncturing provided in the indication channel. A UE receiving the indication may disregard any signals received in the punctured resources when decoding the higher latency communications.

In some cases, a base station may activate and deactivate the periodic low latency resources through control channel signaling, and may transmit the indication channel in time resources outside of time resources that have the reserved periodic resources. A UE may determine that the periodic low latency resources are activated, may not monitor the periodic low latency resources for the indication channel, and may monitor resources outside of the periodic low latency resources for the indication channel.

Resources allocated for wireless transmissions may be used for uplink and/or downlink communications that are low latency communications, which may in some cases, puncture relatively latency insensitive communications such as eMBB transmissions. In some cases, a TTI duration for eMBB transmissions may correspond to one slot of a wireless subframe, one wireless subframe, one orthogonal frequency division multiplexing (OFDM) symbol, or multiple (e.g., <NUM>, <NUM>, or <NUM>) OFDM symbols. In some cases, wireless communications systems may use scalable TTI durations, and may provide for multiple different wireless services that may use different TTI durations based on latency requirements or quality of service (QoS) requirements of the service. Such different services may be selected depending upon the nature of the communications. For example, communications that require low latency and high reliability, sometimes referred to as mission critical (MiCr) communications, may be served through a URLLC service that uses reduced TTI durations (e.g., one-symbol or two-symbol TTIs, which may be referred to as a mini-slot). Correspondingly, communications that are more delay-tolerant may be served through a service that provides relatively higher throughput with somewhat higher latency, such as a mobile broadband service (e.g., an eMBB service) that uses slot TTIs, or <NUM> or longer TTIs. In other examples, communications may be with UEs that are incorporated into other devices (e.g., meters, vehicles, appliances, machinery, etc.), and a machine-type communication (MTC) service (e.g., massive MTC (mMTC)) may be used for such communications. In some cases, different services (e.g., eMBB, URLLC, mMTC) may have different TTIs, different sub-carrier (or tone) spacing and different cyclic prefixes.

The present disclosure describes various techniques with reference to <NUM> networks (e.g., LTE networks) and next generation networks (e.g., <NUM> or NR networks) that are being designed to support features such as high bandwidth operations, more dynamic subframe/slot types, and self-contained subframe/slot types (in which HARQ feedback for a subframe/slot may be transmitted before the end of the subframe/slot). However, such techniques may be used for any system in which low latency communications may be multiplexed with higher latency communications.

Aspects of the disclosure are initially described in the context of a wireless communications system. Various resources and process flows for indication channel transmissions, low latency transmissions, and higher latency transmissions are then described. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to indication channel techniques for low latency wireless communications.

<FIG> illustrates an example of a wireless communications system <NUM> in accordance with various aspects of the present disclosure. The wireless communications system <NUM> includes base stations <NUM>, UEs <NUM>, and a core network <NUM>. In some examples, the wireless communications system <NUM> may be a Long Term Evolution (LTE), LTE-Advanced (LTE-A) network, or a New Radio (NR) network. In some cases, wireless communications system <NUM> may support enhanced broadband communications, ultra-reliable (i.e., mission critical) communications, low latency communications, and communications with low-cost and low-complexity devices. Wireless communications system <NUM> may provide for wireless transmissions in which periodic resources may be configured for low latency transmissions and an indication channel may be provided to indicate low latency transmissions that are transmitted outside of the periodic resources. Such techniques may allow for higher reliability transmissions and efficient system operation.

Each base station <NUM> may provide communication coverage for a respective geographic coverage area <NUM>. Communication links <NUM> shown in wireless communications system <NUM> may include uplink (UL) transmissions from a UE <NUM> to a base station <NUM>, or downlink (DL) transmissions, from a base station <NUM> to a UE <NUM>. Control information and data may be multiplexed on an uplink channel or downlink according to various techniques. Control information and data may be multiplexed on a downlink channel, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. In some examples, the control information transmitted during a TTI of a downlink channel may be distributed between different control regions in a cascaded manner (e.g., between a common control region and one or more UE-specific control regions).

A UE <NUM> may also be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. A UE <NUM> may also be a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a personal electronic device, a handheld device, a personal computer, a wireless local loop (WLL) station, an Internet of things (IoT) device, an Internet of Everything (loE) device, a machine type communication (MTC) device, an appliance, an automobile, or the like.

Some UEs <NUM>, such as MTC or loT devices, may be low cost or low complexity devices, and may provide for automated communication between machines, i.e., Machine-to-Machine (M2M) communication.

In some cases, an MTC device may operate using half-duplex (one-way) communications at a reduced peak rate. MTC devices may also be configured to enter a power saving "deep sleep" mode when not engaging in active communications. In some cases, MTC or loT devices may be designed to support mission critical functions and wireless communications system may be configured to provide ultra-reliable communications for these functions.

Base stations <NUM> may also be referred to as eNodeBs (eNBs) <NUM> or gNodeBs (gNBs) <NUM>.

The core network may be an evolved packet core (EPC), which may include at least one MME, at least one S-GW, and at least one P-GW. All user IP packets may be transferred through the S-GW, which itself may be connected to the P-GW. The operators IP services may include the Internet, the Intranet, an IP Multimedia Subsystem (IMS), and a Packet-Switched (PS) Streaming Service (PSS).

At least some of the network devices, such as a base station <NUM> may include subcomponents such as an access network entity, which may be an example of an access node controller (ANC). Each access network entity may communicate with a number of UEs <NUM> through one or more access network transmission entities, each of which may be an example of a smart radio head, or a transmission/reception point (TRP).

The MAC layer may also use Hybrid ARQ (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE <NUM> and a network device or core network <NUM> supporting radio bearers for user plane data.

Time intervals in LTE or NR may be expressed in multiples of a basic time unit (which may be a sampling period of Ts = <NUM>/<NUM>,<NUM>,<NUM> seconds). Time resources may be organized according to radio frames of length of <NUM> (Tf = 307200Ts), which may be identified by a system frame number (SFN) ranging from <NUM> to <NUM>. Each frame may include ten <NUM> subframes numbered from <NUM> to <NUM>. A subframe may be further divided into two <NUM> slots, each of which contains <NUM> or <NUM> modulation symbol periods (depending on the length of the cyclic prefix prepended to each symbol). Excluding the cyclic prefix, each symbol contains <NUM> sample periods. In some cases the subframe may be the smallest scheduling unit, also known as a TTI. In other cases, as discussed above, a TTI may be shorter than a subframe or may be dynamically selected (e.g., in short TTI bursts or in selected component carriers using short TTIs).

Wireless communications system <NUM> may support operation on multiple cells or carriers, a feature which may be referred to as carrier aggregation (CA) or multi-carrier operation. A carrier may also be referred to as a component carrier (CC), a layer, a channel, etc. The terms "carrier," "component carrier," "cell," and "channel" may be used interchangeably herein. A UE <NUM> may be configured with multiple downlink CCs and one or more uplink CCs for carrier aggregation.

An eCC may be characterized by one or more features including: wider bandwidth, shorter symbol duration, shorter transmission time interval (TTIs), and modified control channel configuration. An eCC may also be configured for use in unlicensed spectrum or shared spectrum (where more than one operator is allowed to use the spectrum). An eCC characterized by wide bandwidth may include one or more segments that may be utilized by UEs <NUM> that are not capable of monitoring the whole bandwidth or prefer to use a limited bandwidth (e.g., to conserve power). A shorter symbol duration may be associated with increased subcarrier spacing. A TTI in an eCC may consist of one or multiple symbols. In some cases, the TTI duration (that is, the number of symbols in a TTI) may be variable.

As discussed above, in certain deployments one or more of the UEs <NUM> may use low latency communications in a scheduled or periodic manner (e.g., UEs <NUM> in a factory automation deployment). In such cases, certain periodic resources may be reserved for low latency communications, and a base station <NUM> or UE <NUM> may use such periodic low latency resources for low latency transmissions. The UE <NUM> and base station <NUM> may rate match higher latency communications around the periodic low latency resources, and thus the higher latency communications may have a lower likelihood of being punctured by low latency communications, which may enhance the likelihood of successful reception of both the low latency communications and the higher latency communications and thereby enhance system efficiency.

Furthermore, as indicated above, a base station <NUM> may transmit an indication of the reassigned (or punctured) resources to one or more UEs <NUM>. Specifically, the base station <NUM> may transmit an indication (e.g., a current indication) of the reassigned resources over a designated indication channel (e.g., a current indication channel) during a time resource (e.g., a mini-slot time resource) that is being reassigned. In cases where periodic low latency resources are identified, the indication channel may not be transmitted in the time resources (e.g., a mini-slot) of the periodic low latency resources, and thus a UE may skip monitoring such resources for an indication channel transmission. Thus, resources that would otherwise be assigned to the current indication channel may be used for other transmissions (e.g., physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) transmissions), and UEs <NUM> may consume fewer processing and power resources associated with receiving and decoding the indication channel. In the event that a low latency transmission is transmitted outside of the periodic low latency resources, the higher latency communications may be punctured and an indication of the puncturing provided in the indication channel. A UE <NUM> receiving such an indication may disregard any signals received in the punctured resources when decoding the higher latency communications.

In some cases, a base station <NUM> may activate and deactivate the periodic low latency resources through control channel signaling, and may transmit the indication channel in time resources outside of time resources that have the reserved periodic resources. A UE <NUM> may determine that the periodic low latency resources are activated, and may monitor resources outside of the periodic low latency resources for the indication channel while not monitoring the periodic low latency resources for the indication channel.

<FIG> illustrates an example of a wireless communications system <NUM> that supports indication channel techniques for low latency wireless communications in accordance with various aspects of the present disclosure. Wireless communications system <NUM> may include base station <NUM>-a, which may be an example of a base station <NUM> described with reference to <FIG>. Wireless communications system <NUM> may also include UE <NUM>-a and UE <NUM>-b, which may be examples of a UE <NUM> described with reference to <FIG>.

In this example, UE <NUM>-a may operate in a low latency mode and may be referred to as a low latency UE <NUM>-a, and UE <NUM>-b may operate in an eMBB mode and may be referred to as an eMBB UE <NUM>-b. Base station <NUM>-a may provide communication coverage for a respective coverage area <NUM>-a, which may be an example of a coverage area <NUM> described with reference to <FIG>. Although the example of <FIG> describes communication between a base station and two UEs, it is to be understood that the techniques described herein are applicable to a single UE capable of operating in an eMBB mode and a low latency mode, or to any number of UEs <NUM> that may operate in one or both eMBB and low latency modes.

Wireless communications system <NUM> may support multiple different services that may use different TTIs and have different latency requirements, such as eMBB communications <NUM> and low latency communications <NUM>. As discussed above, low latency UE <NUM>-a may operate in an low latency mode and may communicate with base station <NUM>-a over carrier <NUM> (e.g., low latency communications <NUM>), and eMBB UE <NUM>-b may operate in an eMBB mode and may communicate with base station <NUM>-a over the same carrier <NUM> (e.g., eMBB communications <NUM>). As described with reference to <FIG>, low latency communications <NUM> may puncture eMBB communications <NUM> due to the low latency communications <NUM> having a higher priority than eMBB communications <NUM>. Accordingly, when base station <NUM>-a or low latency UE <NUM>-a identifies low latency data to transmit, base station <NUM>-a may reassign resources originally allocated for eMBB communications <NUM> for low latency communications <NUM> (e.g., using puncturing). In such cases, it may be appropriate for the base station <NUM>-a to indicate, via an indication channel the time and frequency resources reassigned for low latency communications <NUM> (e.g., punctured resources). When the eMBB UE <NUM>-b receives such an indication, it can disregard the information received over the indicated resources, such as by setting log likelihood ratios (LLRs) to zero over the indicated resources, which can enhance system decoding performance.

Further, as indicated above, in some cases the low latency communications <NUM> may occur at a known periodicity. For example, UEs <NUM> may be deployed in a factory automation system and low latency UE <NUM>-a may transmit low latency communications at a known periodicity (e.g. once every <NUM> seconds to report a real-time measurement or equipment status). Wireless communications system <NUM> may support efficient techniques for assigning periodic low latency resources for such low latency transmissions, and also for indicating resources outside of the assigned periodic low latency resources that are reassigned for low latency communications <NUM>. Specifically, a base station <NUM>-a may configure periodic low latency resources, which the low latency UE <NUM>-a may use for low latency transmissions and that the eMBB UE <NUM>-b may rate-match around for eMBB transmissions. The base station <NUM>-a may transmit a current indicator in a current indication channel in resources that are not within the periodic low latency resources. In some examples, the current indicator may include a flag indicating resources reassigned for low latency communications <NUM>, and may include an indication of the reassigned resources in addition to other information, such as power ratio information, modulation order information, etc. used for communication on resources of carrier <NUM>.

UEs <NUM>, as indicated above, may skip monitoring for the indication channel in the periodic low latency resources, and only monitor the indication channel in resources outside of the periodic low latency resources. Low latency transmissions may be transmitted outside of the periodic low latency resources, for example, if a retransmission of a low latency transmission is transmitted before another available periodic low latency resource. The UEs <NUM> may receive the current indicator and identify a strategy for communicating on the resources reassigned for low latency communications <NUM> based on the current indicator. For example, low latency UE <NUM>-a may receive and decode the current indicator and may determine to transmit or monitor for a transmission on the resources reassigned for low latency communications <NUM>. The eMBB UE <NUM>-b may also receive and decode the indication, and may determine to refrain from communicating on the resources reassigned for low latency communications <NUM>. If eMBB UE <NUM>-b is unable to decode the current indicator, eMBB UE <NUM>-b may proceed with normal communications on the resources originally allocated for eMBB communications <NUM>.

<FIG> illustrates an example of wireless resources <NUM> having a current indication channel that supports indication channel techniques for low latency wireless communications in accordance with various aspects of the present disclosure. Wireless resources <NUM> may be used for eMBB and low latency transmissions between a UE and a base station such as discussed above with respect to <FIG> and <FIG>.

A base station may allocate resources of a slot <NUM>, which may contain a number of mini-slots <NUM>, which in some examples corresponds to an OFDM symbol. The base station, within the slot <NUM> may allocate frequency region <NUM>-a for control information (i.e., as an indication channel <NUM>) and frequency region <NUM>-b for eMBB communications <NUM>. In some cases, the base station or a UE operating in an ultra-reliable low latency mode may identify low latency data to transmit. In such cases, the base station may reassign (or puncture) resources allocated for eMBB communications <NUM> to accommodate low latency communications <NUM>. Accordingly, it may be appropriate for the base station to transmit an indication of the resources reassigned (or punctured) for the low latency communications <NUM>.

In some examples, the base station may transmit the indication in the indication channel <NUM>. Specifically, for low latency communications in mini-slot <NUM>-a, the base station may transmit the indication in corresponding indication channel <NUM> resources. Such an indication may be referred to as a current indication. The use of the current indication may provide sufficient time for a HARQ process (e.g., for a HARQ turn-around) and may support low latency since a UE is able to identify reassigned resources immediately. However, the use of a current indication may result in relatively high overhead from the resources allocated for indication channel <NUM> and for monitoring and processing of transmissions in the indication channel <NUM>. Additionally, as discussed above, in some cases UEs may be in a deployment that provides known or periodic low latency transmissions. Accordingly, to reduce overhead, base station may configure certain resources for low latency communications and may transmit the indication channel only in time resources (e.g., mini-slots) that do not have any periodic low latency resources.

<FIG> illustrates an example of a periodic low latency resources and a current indication channel <NUM> that supports indication channel techniques for low latency wireless communications in accordance with various aspects of the present disclosure. The periodic low latency resources and a current indication channel <NUM> may be used for eMBB and low latency transmissions between a UE and a base station such as discussed above with respect to <FIG> and <FIG>.

In this example, a base station may allocate resources of slots <NUM>, which may contain a number of mini-slots <NUM>, similarly as discussed with respect to <FIG>. Within each slot <NUM>, the base station may allocate frequency region <NUM> for control information (i.e., as an indication channel <NUM>). In this example, the base station may identify that one or more UEs are present that may transmit low latency transmissions at periodic intervals. The base station may thus configure periodic low latency communications <NUM> resources, as well as resources for eMBB communications <NUM> that are outside of the resources configured for low latency communications <NUM>. As discussed above, such periodic low latency resources may be configured in applications (e.g., factory automation deployments) where low latency downlink and/or uplink traffic may occur at known periodic intervals. In some applications, the low latency communications <NUM> may be supported only at certain times, and may be unsupported at other times. In such cases, the indication channel <NUM> may be configured during each mini-slot <NUM> during time periods in which periodic low latency communications are not supported, and may be configured only in mini-slots <NUM> that do not have periodic low latency resources during time periods in which periodic low latency communications are supported.

In some cases, the base station may configure the resources for periodic low latency communications <NUM> as well as frequency resources over these time resources, and thus eMBB UEs and low latency UEs may identify such resources without associated indication channel <NUM> transmissions. In some cases, the base station may schedule the periodic low latency communications <NUM> once, and the periodicity and frequency resources may configurable and set by the higher layers. In some examples, a base station may enable and disable periodic resources for low latency communications <NUM>, such as through RRC signaling, and UEs may monitor the indication channel <NUM> based on the periodic low latency communications <NUM> maybe enabled or disabled. In some cases, when periodic low latency communications <NUM> are disabled, the base station may discontinue sending any indication channel <NUM> transmission. In other cases, when periodic low latency communications <NUM> are disabled, the potential for other low latency transmissions may continue to be present, and an indication channel may be transmitted in a manner similarly as discussed above with respect to <FIG>. In cases where no other low latency communications are configured, the indication channel may not be transmitted at all, and UEs may not perform monitoring of the indication channel until the periodic low latency transmissions are enabled again or until other low latency transmissions and associated indication channel transmissions are configured.

When periodic low latency communications <NUM> are enabled, an eMBB UE may know the associated time/frequency resources and may not search for the indication channel over mini-slots <NUM>-a that include these resources, and some power saving can be achieved by the eMBB UEs. Further, low latency UEs may use the periodic low latency communications <NUM> for low latency transmissions and may not search for the indication channel to identify such low latency resources. Additionally, the eMBB communications <NUM> may be rate-matched around the resources assigned to the periodic low latency communications <NUM> and thus low latency transmissions would not puncture eMBB transmissions, thereby indication channel <NUM> transmissions in such resources may be skipped entirely. Hence, more resources can be preserved for both eMBB and low latency transmissions (e.g., PUSCH or PDSCH transmissions).

However, if a low latency transmission is not successfully decoded, one or more retransmissions of the low latency transmission may be needed in order to meet high reliability and time constraints associated with certain low latency transmissions. In some cases, such retransmissions may be transmitted outside of the resources configured for periodic low latency communications <NUM>. In such cases, an indication of such a low latency transmission may be signaled in indication channel <NUM> in mini-slots <NUM>-b outside of mini-slots <NUM>-a that have configured resources for periodic low latency communications <NUM>. In such cases, low latency re-transmissions <NUM> may be transmitted outside of the resources configured for periodic low latency communications <NUM>. An eMBB UE may thus search for the indication channel only over the mini-slots <NUM>-b that not assigned to periodic low latency communications <NUM>.

<FIG> illustrates an example of a process flow <NUM> that supports indication channel techniques for low latency wireless communications in accordance with various aspects of the present disclosure. Process flow <NUM> may include a base station <NUM>-b, and a UE <NUM>-c, which may be examples of the corresponding devices described with reference to <FIG>. The base station <NUM>-b and the UE <NUM>-c may establish a connection <NUM> according to connection establishment techniques for the wireless communications system. At block <NUM>, the base station <NUM>-b may identify eMBB resources for eMBB communications with the UE <NUM>-c. For example, the base station <NUM>-b may identify slot-TTI o r1 ms TTI resources for eMBB transmissions.

At block <NUM>, the base station <NUM>-b may identify periodic low latency resources. In some cases, the base station <NUM>-b may determine that one or more UEs that are capable of low latency transmissions or that are configured for a URLLC service may transmit such low latency transmissions at known periodic intervals. In such cases, the base station <NUM>-b may configure such low latency UEs to transmit such periodic low latency transmissions on certain frequency resources at the periodic intervals, and may identify the associated time/frequency resources as the periodic low latency resources.

At block <NUM>, the base station <NUM>-b may configure resources and an indication channel for communications with the UE <NUM>-c. In some cases, the base station <NUM>-b may configure periodic low latency resources, and eMBB resources that are outside of the periodic low latency resources. In some cases, the base station <NUM>-b may configure the indication channel to be transmitted only in time resources (e.g., mini-slots) that are outside of time resources of the configured periodic low latency resources. The base station <NUM>-b may transmit the configuration information <NUM> to the UE <NUM>-c. In some cases, the base station <NUM>-b may configure the low latency resources and indication channel to be activated and deactivated based on the periodic time intervals of the low latency transmissions.

At block <NUM>, the UE <NUM>-c may identify the low latency resources, eMBB resources, and indication channel resources. In some cases, the configuration information may be provided using RRC signaling, and the UE <NUM>-c may decode the RRC signaling and identify the resources that are configured for low latency transmissions, eMBB transmissions, and for the indication channel.

At optional block <NUM>, the base station <NUM>-b may identify low latency data traffic is to be transmitted. In some cases, such an identification may be made according to the periodic low latency intervals associated with the low latency UEs. In other cases, the base station <NUM>-b may receive an indication that a UE is requesting a low latency service (e.g., a URLLC) connection. Responsive to the identification of low latency data traffic, the base station <NUM>-b may transmit activation signal <NUM> to the UE <NUM>-c. The activation signal <NUM> may be transmitted, for example, in RRC signaling, in downlink control information (DCI), in a PDCCH transmission, or other signaling to the UE <NUM>-c.

At block <NUM>, the base station <NUM>-b may rate match eMBB communications around the periodic low latency resources. Similarly, at block <NUM>, the UE <NUM>-c may rate match eMBB communications around the periodic low latency resources. Such rate matching may allow eMBB transmissions to be transmitted with a lower likelihood of being punctured by low latency communications and may enhance the likelihood of successful reception of eMBB (or other non-low latency) communications. Further, as rate matching is done around the periodic low latency resources, low latency transmissions in such resources will not puncture eMBB transmissions, and thus the UE <NUM>-c may not monitor indication channel transmissions in the low latency resources, and the base station <NUM>-b may not transmit the indication channel in time resources (e.g., mini-slots) having low latency resources, which may thus free resources for other transmissions.

The base station <NUM>-b and the UE <NUM>-c may initiate eMBB communications <NUM>. During the eMBB communications <NUM>, the UE <NUM>-c may monitor the indication channel transmissions between periodic low latency resources, as indicated at block <NUM>.

At block <NUM>, the base station <NUM>-b may transmit/receive low latency data using periodic low latency resources. Such low latency communications may be with the UE <NUM>-c, and/or with one or more other low latency UEs. The periodic low latency transmissions may also include feedback transmissions (e.g., HARQ ACK/NACK transmissions) in which successful or unsuccessful receipt of a low latency transmission may be provided.

In the event that a low latency transmission is unsuccessfully received, the base station <NUM>-b may determine, at block <NUM>, that eMBB resources are to be punctured. In some cases, the base station <NUM>-b may determine that a retransmission of the low latency transmission is to be transmitted outside of the periodic low latency resources, and in resources that are configured for eMBB transmissions. The base station <NUM>-b may transmit low latency indicator <NUM> (e.g., a current indication) via the configured indication channel resources.

The UE <NUM>-c may detect the low latency indicator and, at block <NUM>, may disregard signals in the punctured resources. In some cases, the low latency indicator may indicate particular eMBB resources that are punctured for the low latency re-transmission, and the UE <NUM>-c may set LLRs for the indicated resources to zero, which may enhance decoding of the eMBB transmissions that are punctured. The UE <NUM>-c may, based on successful or unsuccessful reception of the eMBB transmissions, transmit a feedback transmission <NUM> (e.g., a HARQ ACK/NACK transmission) to the base station <NUM>-b. In some cases, feedback for the eMBB transmissions may be provided at a code block level rather than a transport block level, and may trigger retransmission of one or more eMBB code blocks that are not successfully received.

<FIG> shows a block diagram <NUM> of a wireless device <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. Wireless device <NUM> may be an example of aspects of a user equipment (UE) <NUM> as described with reference to <FIG>. Wireless device <NUM> may include receiver <NUM>, UE low latency communications manager <NUM>, and transmitter <NUM>. Wireless device <NUM> may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

Receiver <NUM> may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to indication channel techniques for low latency wireless communications, etc.). Information may be passed on to other components of the device. The receiver <NUM> may be an example of aspects of the transceiver <NUM> described with reference to <FIG>. The receiver <NUM> may utilize a single antenna or a set of antennas.

UE low latency communications manager <NUM> may be an example of aspects of the UE low latency communications manager <NUM> described with reference to <FIG>.

UE low latency communications manager <NUM> and/or at least some of its various sub-components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions of the UE low latency communications manager <NUM> and/or at least some of its various sub-components may be executed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. The UE low latency communications manager <NUM> and/or at least some of its various sub-components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices. In some examples, UE low latency communications manager <NUM> and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure. In other examples, UE low latency communications manager <NUM> and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an I/O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

UE low latency communications manager <NUM> may identify periodic wireless resources for first wireless communications having a first duration transmission time interval (TTI), the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, where the first duration TTI is shorter than the second duration TTI, identify one or more indication channel resources outside of (e.g., between one or more of) the periodic wireless resources, and monitor the one or more indication channel resources for an indication that at least a portion of the first wireless communications are transmitted in a subset of wireless resources outside of the periodic wireless resources.

<FIG> shows a block diagram <NUM> of a wireless device <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. Wireless device <NUM> may be an example of aspects of a wireless device <NUM> or a UE <NUM> as described with reference to <FIG> and <FIG>. Wireless device <NUM> may include receiver <NUM>, UE low latency communications manager <NUM>, and transmitter <NUM>. Wireless device <NUM> may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

UE low latency communications manager <NUM> may be an example of aspects of the UE low latency communications manager <NUM> described with reference to <FIG>. UE low latency communications manager <NUM> may also include periodic resource manager <NUM>, indication channel manager <NUM>, and puncturing monitor <NUM>.

Periodic resource manager <NUM> may identify periodic wireless resources for first wireless communications having a first duration TTI, the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, where the first duration TTI is shorter than the second duration TTI. In some cases, the periodic resource manager <NUM> may receive an activation signal to initiate monitoring of one or more indication channel resources, and receive, subsequent to receiving the activation signal, a deactivation signal to discontinue the monitoring. In some cases, the periodic wireless resources are associated with a first subset of mini-slots of time resources, and where the first subset of mini-slots of time resources do not include the one or more indication channel resources. In some cases, the configuration information indicates one or more of time resources or frequency resources of the periodic wireless resources.

Indication channel manager <NUM> may identify one or more indication channel resources outside of (e.g., between one or more of) the periodic wireless resources. Puncturing monitor <NUM> may monitor the one or more indication channel resources for an indication that at least a portion of the first wireless communications are transmitted in a subset of wireless resources outside of the periodic wireless resources, receive such an indication over the one or more indication channel resources, and disregard wireless transmissions received over the subset of wireless resources based on the indication.

<FIG> shows a block diagram <NUM> of a UE low latency communications manager <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. The UE low latency communications manager <NUM> may be an example of aspects of a UE low latency communications manager <NUM>, a UE low latency communications manager <NUM>, or a UE low latency communications manager <NUM> described with reference to <FIG>, <FIG>, and <FIG>. The UE low latency communications manager <NUM> may include periodic resource manager <NUM>, indication channel manager <NUM>, puncturing monitor <NUM>, rate-matching component <NUM>, and configuration manager <NUM>. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).

Indication channel manager <NUM> may identify one or more indication channel resources outside of (e.g., between one or more of) the periodic wireless resources. Puncturing monitor <NUM> may monitor the one or more indication channel resources for an indication that at least a portion of the first wireless communications are transmitted in a subset of wireless resources outside of the periodic wireless resources, receive the indication over the one or more indication channel resources, and disregard wireless transmissions received over the subset of wireless resources based on the indication.

Rate-matching component <NUM> may rate-match the second wireless communications around the periodic wireless resources within the set of wireless resources and transmit/receive the second wireless communications according to the rate-matching over the set of wireless resources.

Configuration manager <NUM> may receive configuration information that indicates the periodic wireless resources. In some cases, the configuration information is received via radio resource control (RRC) signaling.

<FIG> shows a diagram of a system <NUM> including a device <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. Device <NUM> may be an example of or include the components of wireless device <NUM>, wireless device <NUM>, or a UE <NUM> as described above, e.g., with reference to <FIG>, <FIG> and <FIG>. Device <NUM> may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including UE low latency communications manager <NUM>, processor <NUM>, memory <NUM>, software <NUM>, transceiver <NUM>, antenna <NUM>, and I/O controller <NUM>. These components may be in electronic communication via one or more busses (e.g., bus <NUM>). Device <NUM> may communicate wirelessly with one or more base stations <NUM>.

Processor <NUM> may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor <NUM> may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into processor <NUM>. Processor <NUM> may be configured to execute computer-readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting indication channel techniques for low latency wireless communications).

Software <NUM> may include code to implement aspects of the present disclosure, including code to support indication channel techniques for low latency wireless communications. Software <NUM> may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software <NUM> may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.

<FIG> shows a block diagram <NUM> of a wireless device <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. Wireless device <NUM> may be an example of aspects of a base station <NUM> as described with reference to <FIG>. Wireless device <NUM> may include receiver <NUM>, base station low latency communications manager <NUM>, and transmitter <NUM>. Wireless device <NUM> may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

Base station low latency communications manager <NUM> may be an example of aspects of the base station low latency communications manager <NUM> described with reference to <FIG>.

Base station low latency communications manager <NUM> and/or at least some of its various sub-components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions of the base station low latency communications manager <NUM> and/or at least some of its various sub-components may be executed by a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. The base station low latency communications manager <NUM> and/or at least some of its various sub-components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices. In some examples, base station low latency communications manager <NUM> and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure. In other examples, base station low latency communications manager <NUM> and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an I/O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

Base station low latency communications manager <NUM> may configure periodic wireless resources for first wireless communications having a first duration TTI, the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, where the first duration TTI is shorter than the second duration TTI, configure one or more indication channel resources outside of the periodic wireless resources, and transmit one or more parameters associated with the periodic wireless resources and the one or more indication channel resources.

<FIG> shows a block diagram <NUM> of a wireless device <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. Wireless device <NUM> may be an example of aspects of a wireless device <NUM> or a base station <NUM> as described with reference to <FIG> and <FIG>. Wireless device <NUM> may include receiver <NUM>, base station low latency communications manager <NUM>, and transmitter <NUM>. Wireless device <NUM> may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

Base station low latency communications manager <NUM> may be an example of aspects of the base station low latency communications manager <NUM> described with reference to <FIG>. Base station low latency communications manager <NUM> may also include periodic resource manager <NUM>, indication channel manager <NUM>, and configuration manager <NUM>.

Periodic resource manager <NUM> may configure periodic wireless resources for first wireless communications having a first duration TTI, the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, where the first duration TTI is shorter than the second duration TTI. In some cases, the periodic wireless resources are associated with a first subset of mini-slots of time resources, and where the first subset of mini-slots of time resources do not include indication channel resources.

Indication channel manager <NUM> may configure one or more indication channel resources outside of the periodic wireless resources. Configuration manager <NUM> may transmit one or more parameters associated with the periodic wireless resources and the one or more indication channel resources. In some cases, the transmitting includes transmitting the one or more parameters to a UE that indicates the periodic wireless resources. In some cases, the one or more parameters are transmitted via RRC signaling. In some cases, the one or more parameters indicate one or more of time resources or frequency resources of the periodic wireless resources.

<FIG> shows a block diagram <NUM> of a base station low latency communications manager <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. The base station low latency communications manager <NUM> may be an example of aspects of a base station low latency communications manager <NUM> described with reference to <FIG>, <FIG>, and <FIG>. The base station low latency communications manager <NUM> may include periodic resource manager <NUM>, indication channel manager <NUM>, configuration manager <NUM>, puncturing monitor <NUM>, rate-matching component <NUM>, and low latency transmission component <NUM>. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).

Periodic resource manager <NUM> may configure periodic wireless resources for first wireless communications having a first duration TTI, the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, where the first duration TTI is shorter than the second duration TTI. In some cases, the periodic wireless resources are associated with a first subset of mini-slots of time resources, and where the first subset of mini-slots of time resources do not include the one or more indication channel resources.

Puncturing monitor <NUM> may determine that at least a portion of the first wireless communications are to be transmitted in a subset of wireless resources outside of the periodic wireless resources and transmit, via the one or more indication channel resources, an indication that at least the portion of the first wireless communications are being transmitted in the subset of wireless resources.

Rate-matching component <NUM> may rate-match the second wireless communications around the periodic wireless resources and transmit the second wireless communications according to the rate-matching over the set of wireless resources.

Low latency transmission component <NUM> may transmit at least a portion of the first wireless communications over the periodic wireless resources, determine that data traffic is present to be transmitted via the first wireless communications, transmit an activation signal to the UE to initiate the monitoring of the one or more indication channel resources, transmit the data traffic via the first wireless communications, determine, subsequent to transmitting the data traffic, that data traffic is no longer present for transmission via the first wireless communications, and transmit, responsive to the determining that data traffic is no longer present, a deactivation signal to the UE to discontinue the monitoring of the one or more indication channel resources.

<FIG> shows a diagram of a system <NUM> including a device <NUM> that supports indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. Device <NUM> may be an example of or include the components of base station <NUM> as described above, e.g., with reference to <FIG>. Device <NUM> may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including base station low latency communications manager <NUM>, processor <NUM>, memory <NUM>, software <NUM>, transceiver <NUM>, antenna <NUM>, network communications manager <NUM>, and base station communications manager <NUM>. These components may be in electronic communication via one or more busses (e.g., bus <NUM>). Device <NUM> may communicate wirelessly with one or more UEs <NUM>.

Processor <NUM> may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor <NUM> may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into processor <NUM>. Processor <NUM> may be configured to execute computer-readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting indication channel techniques for low latency wireless communications).

Base station communications manager <NUM> may manage communications with other base station <NUM>, and may include a controller or scheduler for controlling communications with UEs <NUM> in cooperation with other base stations <NUM>. For example, the base station communications manager <NUM> may coordinate scheduling for transmissions to UEs <NUM> for various interference mitigation techniques such as beamforming or joint transmission. In some examples, base station communications manager <NUM> may provide an X2 interface within an Long Term Evolution (LTE)/LTE-A wireless communication network technology to provide communication between base stations <NUM>.

<FIG> shows a flowchart illustrating a method <NUM> for indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. The operations of method <NUM> may be implemented by a UE <NUM> or its components as described herein. For example, the operations of method <NUM> may be performed by a UE low latency communications manager as described with reference to <FIG>. In some examples, a UE <NUM> may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE <NUM> may perform aspects of the functions described below using special-purpose hardware.

At block <NUM> the UE <NUM> may identify periodic wireless resources for first wireless communications having a first duration TTI, the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, wherein the first duration TTI is shorter than the second duration TTI. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a periodic resource manager as described with reference to <FIG>.

At block <NUM> the UE <NUM> may identify one or more indication channel resources outside of the periodic wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by an indication channel manager as described with reference to <FIG>.

At block <NUM> the UE <NUM> may monitor the one or more indication channel resources for an indication that at least a portion of the first wireless communications are transmitted in a subset of wireless resources outside of the periodic wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a puncturing monitor as described with reference to <FIG>.

At optional block <NUM> the UE <NUM> may receive the indication over the one or more indication channel resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a puncturing monitor as described with reference to <FIG>.

At optional block <NUM> the UE <NUM> may disregard wireless transmissions received over the subset of wireless resources based at least in part on the indication. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a puncturing monitor as described with reference to <FIG>.

At block <NUM> the UE <NUM> may rate-match the second wireless communications around the periodic wireless resources within the set of wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a rate-matching component as described with reference to <FIG>.

At block <NUM> the UE <NUM> may transmit/receive the second wireless communications according to the rate-matching over the set of wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a rate-matching component as described with reference to <FIG>.

At block <NUM> the UE <NUM> may receive an activation signal to initiate the monitoring the one or more indication channel resources, and wherein the monitoring is performed responsive to the activation signal. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a periodic resource manager as described with reference to <FIG>.

At block <NUM> the UE <NUM> may monitor, based on the activation signal, the one or more indication channel resources for an indication that at least a portion of the first wireless communications are transmitted in a subset of wireless resources outside of the periodic wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a puncturing monitor as described with reference to <FIG>.

At block <NUM> the UE <NUM> may receive, subsequent to receiving the activation signal, a deactivation signal. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a periodic resource manager as described with reference to <FIG>.

At block <NUM> the UE <NUM> may discontinue the monitoring of the periodic resources responsive to receiving the deactivation signal. In such cases, an eMBB UE may monitor the indication channel for all time resources (e.g., mini-slots) for an indication of low latency transmissions that may puncture eMBB transmissions. Similarly, a low latency UE may the indication channel for all time resources (e.g., mini-slots) for an indication of low latency transmissions to/from the low latency UE. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a periodic resource manager as described with reference to <FIG>.

<FIG> shows a flowchart illustrating a method <NUM> for indication channel techniques for low latency wireless communications in accordance with aspects of the present disclosure. The operations of method <NUM> may be implemented by a base station <NUM> or its components as described herein. For example, the operations of method <NUM> may be performed by a base station low latency communications manager as described with reference to <FIG>. In some examples, a base station <NUM> may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the base station <NUM> may perform aspects of the functions described below using special-purpose hardware.

At block <NUM> the base station <NUM> may configure periodic wireless resources for first wireless communications having a first duration TTI, the periodic wireless resources within a set of wireless resources allocated for second wireless communications having a second duration TTI, wherein the first duration TTI is shorter than the second duration TTI. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a periodic resource manager as described with reference to <FIG>.

At block <NUM> the base station <NUM> may configure one or more indication channel resources outside of the periodic wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by an indication channel manager as described with reference to <FIG>.

At block <NUM> the base station <NUM> may transmit one or more parameters associated with the periodic wireless resources and the one or more indication channel resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a configuration manager as described with reference to <FIG>.

At optional block <NUM> the base station <NUM> may determine that at least a portion of the first wireless communications are to be transmitted in a subset of wireless resources outside of the periodic wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a puncturing monitor as described with reference to <FIG>.

At optional block <NUM> the base station <NUM> may transmit, via the one or more indication channel resources, an indication that at least the portion of the first wireless communications are being transmitted in the subset of wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a puncturing monitor as described with reference to <FIG>.

At block <NUM> the base station <NUM> may rate-match the second wireless communications around the periodic wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a rate-matching component as described with reference to <FIG>.

At block <NUM> the base station <NUM> may transmit the second wireless communications according to the rate-matching over the set of wireless resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a rate-matching component as described with reference to <FIG>.

At block <NUM> the base station <NUM> may transmit one or more parameters associated with the periodic wireless resources and the one or more indication channel resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a configuration manager as described with reference to <FIG>. In some cases, the transmitting comprises transmitting the one or more parameters to a UE that indicates the periodic wireless resources.

At block <NUM> the base station <NUM> may determine that data traffic is present to be transmitted via the first wireless communications. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a low latency transmission component as described with reference to <FIG>.

At block <NUM> the base station <NUM> may transmit an activation signal to the UE to initiate the monitoring of the one or more indication channel resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a low latency transmission component as described with reference to <FIG>.

At block <NUM> the base station <NUM> may transmit the data traffic via the first wireless communications. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a low latency transmission component as described with reference to <FIG>.

At block <NUM> the base station <NUM> may determine, subsequent to transmitting the data traffic, that data traffic is no longer present for transmission via the first wireless communications. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a low latency transmission component as described with reference to <FIG>.

At block <NUM> the base station <NUM> may transmit, responsive to the determining that data traffic is no longer present, a deactivation signal to the UE to discontinue the monitoring of the one or more indication channel resources. The operations of block <NUM> may be performed according to the methods described with reference to <FIG>. In certain examples, aspects of the operations of block <NUM> may be performed by a low latency transmission component as described with reference to <FIG>.

The terms "system" and "network" are often used interchangeably. A code division multiple access (CDMA) system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-<NUM>, IS-<NUM>, and IS-<NUM> standards. A time division multiple access (TDMA) system may implement a radio technology such as Global System for Mobile Communications (GSM).

An orthogonal frequency division multiple access (OFDMA) system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) <NUM> (Wi-Fi), IEEE <NUM> (WiMAX), IEEE <NUM>, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications system (UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are releases of Universal Mobile Telecommunications System (UMTS) that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR, and Global System for Mobile communications (GSM) are described in documents from the organization named "3rd Generation Partnership Project" (3GPP). While aspects an LTE or an NR system may be described for purposes of example, and LTE or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE or NR applications.

In LTE/LTE-A networks, including such networks described herein, the term evolved node B (eNB) may be generally used to describe the base stations. The wireless communications system or systems described herein may include a heterogeneous LTE/LTE-A or NR network in which different types of evolved node B (eNBs) provide coverage for various geographical regions. For example, each eNB, gNB or base station may provide communication coverage for a macro cell, a small cell, or other types of cell. The term "cell" may be used to describe a base station, a carrier or component carrier associated with a base station, or a coverage area (e.g., sector, etc.) of a carrier or base station, depending on context.

Base stations may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, eNodeB (eNB), next generation NodeB (gNB), Home NodeB, a Home eNodeB, or some other suitable terminology. The geographic coverage area for a base station may be divided into sectors making up only a portion of the coverage area. The wireless communications system or systems described herein may include base stations of different types (e.g., macro or small cell base stations). The UEs described herein may be able to communicate with various types of base stations and network equipment including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like. There may be overlapping geographic coverage areas for different technologies.

Claim 1:
A method (<NUM>) for wireless communication by a user equipment, UE, comprising:
identifying (<NUM>) periodic wireless resources for first wireless communications in a mini slot, the periodic wireless resources being located within a set of wireless resources allocated for second wireless communications in a slot, wherein:
i, the first wireless communications use a first duration transmission time interval, TTI;
ii, the second wireless communications use a second duration TTI;
iii, the first duration TTI is shorter than the second duration TTI;
iv, the first wireless communications are low latency communications being less delay-tolerant than the second wireless communications; wherein one or more indication channel resources are configured:
in mini slots during time periods in which periodic low latency communications are not supported, and;
only in mini-slots (<NUM>) that do not have periodic low latency resources during time periods in which periodic low latency communications are supported;
monitoring (<NUM>) the one or more indication channel resources (<NUM>) for an indication that retransmissions (<NUM>) of the first wireless communications are transmitted in a subset of wireless resources outside of the periodic wireless resources,
rate-matching the second wireless communications around the periodic wireless resources within the set of wireless resources; and
transmitting or receiving the second wireless communications according to the rate-matching over the set of wireless resources.