Source: https://patents.google.com/patent/US9036524B2/en
Timestamp: 2018-11-13 22:54:42
Document Index: 137477663

Matched Legal Cases: ['Application No. 200710097679', 'Application No. 2007100976790', 'Application No. 201110269715', 'Application No. 12178466', 'Application No. 08734180', 'Application No. 12163016']

US9036524B2 - Method and apparatus for sending control signaling - Google Patents
Method and apparatus for sending control signaling Download PDF
US9036524B2
US9036524B2 US13727932 US201213727932A US9036524B2 US 9036524 B2 US9036524 B2 US 9036524B2 US 13727932 US13727932 US 13727932 US 201213727932 A US201213727932 A US 201213727932A US 9036524 B2 US9036524 B2 US 9036524B2
US13727932
US20130114544A1 (en )
Xianghua WANG
A method of signaling is disclosed. A terminal receives downlink control signaling from a base station and sends an uplink packet to the base station. The uplink packet is sent according to the received downlink control signaling. The downlink control signaling includes a field that includes N bits. The field itself is dynamically indicative of one of a payload size or a redundancy version such that the field itself is indicative of the payload size if a packet that the terminal will send to a base station is an initial transmission and the field itself is indicative of the redundancy version if the packet that the terminal will send to the base station is a retransmission.
This application is a continuation of U.S. patent application Ser. No. 13/544,238, filed on Jul. 9, 2012, which is a continuation of U.S. patent application Ser. No. 12/432,882, filed on Apr. 30, 2009, which is a continuation of International Application No. PCT/CN2008/070822, filed on Apr. 28, 2008, which claims priority to Chinese Patent Application No. 200710097679.0, filed on Apr. 27, 2007. The afore-mentioned patent applications are hereby incorporated by reference in their entireties.
The present invention relates to radio communication technologies, and in particular, to a method and apparatus for sending control signaling
In a radio communication system, by sending control signaling, a control signaling transmitter notifies the control signaling receiver (terminal) of the information on the physical resources and transmission format for transmitting data. The control signaling receiver uses such information to receive downlink transmitted data or send uplink transmitted data. For example, in a Time Division Duplex (TDD) and/or Frequency Division Duplex (FDD) system, the control signaling transmitter needs to notify the timeslot and/or frequency used for transmitting data and other relevant information.
The transmission of control signaling in a system based on the Hybrid Automatic Repeat reQuest (HARQ) is described below as an example. The HARQ is a mechanism associated with packet retransmission between the data transmitter and the data receiver. If the data transmitter is a base station, the data receiver is a terminal. If the data transmitter is a terminal, the data receiver is a base station. By taking downlink adaptive HARQ as an example, the transmission of control signaling is described below, where the transmitter is a base station and the receiver is a terminal.
The base station notifies the terminal of allocated physical resources and HARQ-related information through downlink control signaling, and transmits the downlink data to the terminal. The control signaling may include time frequency resource, modulation mode, payload size, HARQ process number, Redundancy Version (RV), and New Data Indicator (NDI).
If the control signaling received by the terminal is erroneous, Discontinuous Transmission (DTX) is executed, namely, a DTX message is returned to the base station. Upon detecting the DTX fed back by the terminal, the base station sends downlink control signaling again and transmits packets.
If the control signaling received by the terminal is correct, the terminal receives packets as indicated by the control signaling. After receiving the packets correctly, the terminal returns a success acknowledgement (ACK) message to the base station, indicating that the current packet is received correctly. Subsequently, the base station sends the control signaling corresponding to the next packet, and sends the next packet. If the terminal fails to receive the packet correctly, the terminal returns a packet transmission failure acknowledgement, namely, Negative ACKnowledgement (NACK) message, to the base station, and the base station retransmits the control signaling and the packet which is not received by the terminal correctly.
The data transmitter can retransmit the packet for a limited number of times. If a packet is retransmitted for a threshold number of times but is still not received by the receiver successfully, the packet is referred to the upper layer.
In the foregoing process, for every attempt of transmitting the packet from the base station, no matter whether it is initial transmission or retransmission, the base station notifies the terminal through downlink control signaling.
The sent control signaling includes the fields such as physical resource indication, NDI, payload size, and RV. When a new packet is transmitted initially, the NDI value is different from that on the previous occasion. Specifically, if the value range of the NDI is 0 or 1, the NDI changes from 0 to 1, or from 1 to 0, when a new packet is transmitted initially. The value of RV is generally the default value in the initial transmission. If the packet is retransmitted, the NDI value is the same as that in the previous transmission, and the RV value changes. In this example, the RV is marked RV1 when the packet is retransmitted for the first time, marked RV2 when the packet is retransmitted for the second time, marked RV3 when the packet is retransmitted for the third time, marked RV4 when the packet is retransmitted for the fourth time, and so on. In the initial transmission and retransmission of the same packet, the payload size is the same. That is, the payload size needs to be indicated only in the initial transmission.
FIG. 1 is an exemplary signaling flow in a downlink adaptive HARQ process. As shown in FIG. 1, the process is as follows:
Step 101: The base station sends control signaling corresponding to the packet, and sends the packet initially (illustrated by dotted line 101 in FIG. 1), supposing that the control signaling indication NDI=0. The value of the payload size and the value of RV are indicated, and RV may adopt the default value.
Step 102: The terminal returns DTX. In this step, the terminal fails to receive the control signaling, and therefore, returns a DTX.
Step 103: The base station sends the control signaling again, and sends the packet initially (as illustrated by dotted line 103 in FIG. 1), where the value of NDI, the value of payload size, and the value of RV are the same as on the previous occasion, and the value of RV is the default value.
Step 104: The terminal returns a NACK message to the base station. In this step, the terminal receives the control signaling successfully, and therefore, the terminal receives the packet as indicated by the control signaling. If the terminal fails to receive the initially transmitted packet, the terminal returns a NACK to the base station.
Step 105: The base station sends control signaling corresponding to the retransmitted packet, and retransmits the packet (illustrated by dotted line 105 in FIG. 1). In this step, the packet is retransmitted for the first time. Therefore, in the control signaling, NDI=0, the value of the payload size is the same as that in the initial transmission, and the RV value is RV1 which is different from that on the previous occasion.
Afterwards, if the terminal still fails to receive the packet correctly, the base station keeps retransmitting the control signaling and the corresponding packet (as illustrated by step 106 and dotted line 106 in FIG. 1) until the threshold count of retransmission is reached. In the control signaling of retransmission, value of payload size is the same, and the RV changes. If the terminal still fails to receive the packet when the threshold count of retransmission is reached, the packet is referred to the upper layer.
Further, the base station sends control signaling of the new packet, and transmits the new packet. As shown in step 107 and dotted line 107, where the NDI in the control signaling is NDI=1 which is different from the NDI of the previous packet, the control signaling indicates the value of the payload size and the value of RV, and the value of the RV is the default value.
It is necessary to point out that the foregoing base station is a transmitter of the packet, and the terminal is a receiver of the packet. However, in the case of uplink data transmission, the data transmitter is a terminal, and the data receiver is a base station.
In the foregoing process, in the initial transmission of the packet, the RV in the corresponding control signaling may be a default value. The default value may not be indicated in the control signaling. Moreover, if the control signaling transmitted initially is received by the receiver successfully, namely, the receiver obtains the payload size successfully, the corresponding control signaling does not need to indicate the payload size again in the packet retransmission. That is, in the prior art, when the packet is transmitted initially and retransmitted, the control signaling needs to indicate both the RV and the payload size, and the RV indicated by the control signaling in the case of initially transmitting the packet and the payload size indicated by the control signaling in the case of retransmitting the packet are information not required to be indicated, which leads to waste of physical resources.
A method and apparatus for sending control signaling are provided consistent with the embodiments disclosed herein to reduce waste of physical resources at the time of sending control signaling.
A method for sending control signaling in some embodiments may include: indicating, by the transmitter, a payload size or Redundancy Version (RV) through different states of one field in the control signaling; and sending the control signaling indicative of the payload size or RV on the field.
Accordingly, an apparatus for sending control signaling consistent with some embodiments may include multiple units, including, for example: a control signaling generating unit 111, adapted to generate control signaling, where different states of one field in the control signaling indicate a payload size or RV; and a control signaling sending unit 112, adapted to send the control signaling indicative of the payload size or RV on the field.
The technical solution consistent with some embodiments may provide different states of one field in the control signaling indicate the payload size or RV. At the time of sending the control signaling, the payload size or RV sent, may be indicated in the field, thus vacating the field occupied by the information not required to be indicated, and saving physical resources.
FIG. 1 is an exemplary signaling flowchart of HARQ in the prior art;
FIG. 2 is an exemplary flowchart consistent with some embodiments of the present disclosure;
FIG. 3 is an exemplary signaling flowchart in scenario 1 consistent with some embodiments of the present disclosure;
FIG. 4 is an exemplary signaling flowchart in scenario 2 consistent with some embodiments of the present disclosure;
FIG. 5 (FIG. 5 a and FIG. 5 b) is an exemplary signaling flowchart in scenario 3 consistent with some embodiments of the present disclosure;
FIG. 6 (FIG. 6 a and FIG. 6 b) is an exemplary signaling flowchart in scenario 4 consistent with some embodiments of the present disclosure;
FIG. 7 (FIG. 7 a and FIG. 7 b) is an exemplary signaling flowchart in scenario 5 consistent with some embodiments of the present disclosure;
FIG. 8 is an exemplary signaling flowchart in scenario 6 consistent with some embodiments of the present disclosure;
FIG. 9 (FIG. 9 a and FIG. 9 b) is an exemplary signaling flowchart in scenario 7 consistent with some embodiments of the present disclosure;
FIG. 10 is an exemplary signaling flowchart in scenario 8 consistent with some embodiments of the present disclosure; and
FIG. 11 is an exemplary block diagram of an apparatus consistent with some embodiments of the present disclosure.
A method for sending control signaling is provided in embodiments disclosed herein, including: indicating payload size or RV based on different states of one field in the control signaling; and sending, in response to the indication, the control signaling indicative of the payload size or RV in the field, thus vacating the field occupied by the information not required to be indicated, and saving physical resources.
In the initial transmission of the packet, the RV in the corresponding control signaling may be a default value. The default value may not be indicated in the control signaling. Moreover, if the control signaling transmitted initially is received by the receiver successfully, namely, the receiver obtains the payload size successfully, the corresponding control signaling does not need to indicate the payload size again in the packet retransmission. In fact, every transmission of a packet may be either an initial transmission or a retransmission. Therefore, the control signaling in every transmission may indicate either payload size or RV.
Accordingly, the embodiments disclosed herein are described below. In order to make the technical solution clearer to those skilled in the art, the technical solution is hereinafter described in detail by reference to embodiments and accompanying drawings.
FIG. 2 is an exemplary flowchart consistent with some embodiments. As shown in FIG. 2, the process may include the following steps.
Step 201: Different states of one field in the control signaling may indicate a payload size or RV.
Specifically, this step is to specify which states of the field indicate the payload size, and which states indicate the RV. It is appropriate that some states of the field indicate the payload size, and the remaining states indicate the RV. A corresponding relation exists between the physical resource, transmission format (Modulation Code Style (MCS)), and payload size. Therefore, the corresponding payload size may be determined based on the allocated physical resources and transmission format (MCS). If physical resources are indicated, the payload size may be indicated implicitly by indicating the transmission format (MCS).
Detailed description is given below, based on an example where the field indicative of the payload size occupies 6 bits and the field indicative of the RV occupies 2 bits. In this embodiment, the RV exists in a total of 4 states (22=4). Therefore, the field indicative of the RV occupies 2 bits. The payload size exists in a total of 60 states, but 25=32 which is not enough for indicating 60 states. Considering 26=64, the field for indicating the payload size needs to occupy 6 bits. Therefore, a 6-bit field is capable of indicating 64 states in total, 4 of the 64 states indicate the RV, and the remaining 60 states indicate the payload size. In this way, a 6-bit field is enough for indicating both the payload size and the RV. The 2 bits occupied by the RV in the prior art are saved in the present embodiments.
For ease of identification, in a 6-bit field, 4 states whose foremost upper bits are all 0s can indicate 4 different RVs. That is, the 4 states 000000, 000001, 000010 and 000011 indicate RV1-RV4. Accordingly, the remaining 60 states (any bit in the 4 foremost upper bits of the remaining 60 states is non-zero) indicate 60 different payload sizes. Therefore, when the control signaling is received, it is practicable to judge whether the field in the control signaling indicates the payload size or the RV by only detecting the state code.
The foregoing example shows that different states of one field in the control signaling are enough for indicating all values of the payload size and RV.
Step 202: The transmitter sends the control signaling indicative of the payload size or RV in the field. That is, the control signaling indicative of the payload size or RV in the field is sent to the receiver.
Specifically, this step may help determine whether the field of the control signaling to be sent indicates the payload size or RV, fill the field of the control signaling according to the specific payload size or RV, and send the control signaling. For example, in the initial transmission of the packet, the transmitter sends the control signaling indicative of the payload size on the same field to the receiver. Upon detecting a DTX, the transmitter sends the control signaling indicative of the payload size or RV on the same field. Upon detecting a NACK, the transmitter sends the control signaling indicative of the RV on the same field.
Upon detecting an ACK, the transmitter transmits a new packet initially, the field in the corresponding control signaling bears the payload size, and the default value of the RV applies.
When the control signaling received by the receiver is erroneous, a DTX message is returned. Accordingly, after receiving the DTX message, the transmitter sends the control signaling again to start retransmission of the packet. Generally, it is practicable to determine whether the field in the control signaling indicates the payload size or RV according to whether the count of transmission of the packet reaches a pre-defined value. If the count of transmission of the packet reaches or exceeds the pre-defined value, it is determined that the terminal obtains the payload size successfully in the previous transmission process. Therefore, the transmitter may indicate the RV on the foregoing field in the next signaling transmission. If the count of transmission of the packet does not reach the pre-defined value, the control signaling transmitter indicates the payload size on the field in the next signaling transmission.
If the receiver receives the control signaling correctly without receiving the corresponding packet correctly, the receiver returns a NACK message. Upon detecting the NACK message, the transmitter sends the control signaling to the receiver again. The field in the control signaling indicates the RV. Accordingly, the transmitter retransmits the packet after sending the control signaling.
Described above is a process in which the transmitter sends control signaling to the receiver and sends a packet to the receiver, and the receiver receives the packet according to the control signaling. After the transmitter sends the control signaling to the receiver, the receiver may also send data to the transmitter according to the control signaling. It is worthy of attention that the foregoing transmitter may be a base station, and the receiver may be a terminal. That is, in the downlink transmission, the base station sends downlink control signaling and a packet to the terminal and the terminal receives the packet from the base station according to the downlink control signaling. Likewise, in the uplink transmission, the terminal can send a packet to the base station to perform uplink data transmission according to the downlink control signaling sent by the base station.
Taking downlink data transmission as an example, the foregoing embodiment applied in different scenarios is described below.
Scenario 1: FIG. 3 is an exemplary signaling flowchart in scenario 1 consistent with some embodiments.
Step 301: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 301 in FIG. 3), where the NDI=0 in the control signaling. The state on a specific field in the control signaling is used to indicate the payload size, and the default value of the RV applies. The specific field may be any field applicable for indicating the payload size or RV in the control signaling. In the following scenarios, the specific field may be obtained in the same way as in this scenario.
Step 302: The terminal fails to receive the packet, and returns a NACK.
Step 303: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 303 in FIG. 3), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
Step 304: The terminal receives the packet successfully, and returns an ACK.
Step 305: The base station sends the control signaling of a new packet (namely, the next packet) and the new packet initially, where the NDI=1 in the control signaling. A state on the specific field indicates the payload size, and the default value of the RV applies.
Scenario 2: FIG. 4 is an exemplary signaling flowchart in scenario 2 consistent with some embodiments of the present invention.
Step 401: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 401 in FIG. 4), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size, and the default value of the RV applies.
Step 402: The terminal fails to receive the packet, and returns a NACK.
Step 403: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 403 in FIG. 3), where NDI=0 in the control signaling. A state on the specific field indicates the RV1. In the subsequent retransmission process, the terminal fails to receive the packet.
Step 404: The base station sends the control signaling corresponding to the packet in a last attempt, and retransmits the packet (as illustrated by dotted line 404 in FIG. 3), where NDI=0 in the control signaling. A state on the specific field indicates the RV_max, where RV_max indicates the RV at the maximum retransmission count.
Step 405: The terminal fails to receive the packet, and returns a NACK.
Because the maximum retransmission count is reached, the packet is referred to the upper layer.
Step 406: The base station sends the control signaling corresponding to a new packet (namely, the next packet) initially and sends the new packet, where the NDI=1 in the control signaling. A state on the specific field indicates the payload size, and the default value of the RV applies.
Scenario 3: In this scenario, the information returned by the terminal is mistaken as a NACK by the base station, and the retransmission count does not reach the maximum retransmission count. As shown in FIG. 5 a, the ACK is mistaken as NACK. As shown in FIG. 5 b, the DTX is mistaken as NACK in the retransmission process.
FIG. 5 a illustrates the following steps.
Step 5 a 01: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 5 a 01), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size, and the default value of the RV applies.
Step 5 a 02: The terminal fails to receive the packet, and returns a NACK.
Step 5 a 03: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 5 a 03), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
Step 5 a 04: The terminal receives the packet successfully, and therefore, returns an ACK, which is mistaken as NACK by the base station.
Step 5 a 05: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 5 a 05), where NDI=0 in the control signaling. A state on the specific field indicates the RV2.
Step 5 a 06: The terminal receives the packet successfully, and therefore, returns an ACK.
As regards the scenario shown in FIG. 5 b, in step 5 b 04, the terminal fails to receive the control signaling and returns a DTX, which is mistaken as NACK by the base station. The remaining steps are the same as the counterpart in FIG. 5 a, and are not repeated here any further.
Scenario 4: In this scenario, the information returned by the terminal is mistaken as a NACK by the base station when the retransmission count reaches the maximum retransmission count. As shown in FIG. 6 a the ACK is mistaken as NACK. As shown in FIG. 6 b, the DTX is mistaken as NACK.
FIG. 6 a illustrates the following steps.
Step 6 a 01: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 6 a 01), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size. The default value of the RV applies.
Step 6 a 02: The terminal fails to receive the packet, and therefore, returns a NACK.
Step 6 a 03: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 6 a 03), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
In the subsequent retransmission process, the terminal fails to receive the packet.
Step 6 a 04: The base station sends the control signaling corresponding to the packet at the last attempt, and retransmits the packet (as illustrated by dotted line 6 a 04), where NDI=0 in the control signaling. A state on the specific field indicates the RV_max.
Step 6 a 05: The terminal receives the packet successfully, and therefore, returns an ACK, which is mistaken as NACK by the base station.
Step 6 a 06: The base station sends the control signaling corresponding to a new packet (namely, the next packet) initially and sends the new packet (illustrated by dotted line 6 a 06), where the NDI=1 in the control signaling. A state on the specific field indicates the payload size. The default value of the RV applies.
Based on the scenario shown in FIG. 6 b, in step 6 b 05, the terminal fails to receive the control signaling and returns a DTX, which is mistaken as NACK by the base station. The remaining steps may be similar to the counterpart in FIG. 6 a, and are not repeated here any further.
Scenario 5: In this scenario, the information returned by the terminal is mistaken as an ACK by the base station, and in response, the base station transmits a new packet. As shown in FIG. 7 a, the NACK is mistaken as ACK. As shown in FIG. 7 b, the DTX is mistaken as ACK.
FIG. 7 a illustrates the following steps.
Step 7 a 01: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 7 a 01), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size, and the default value of the RV applies.
Step 7 a 02: The terminal fails to receive the packet, and therefore, returns a NACK.
Step 7 a 03: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 7 a 03), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
Step 7 a 04: The terminal fails to receive the packet, and therefore, returns a NACK, which is mistaken as ACK by the base station.
Step 7 a 05: The base station sends the control signaling corresponding to a new packet initially and sends the new packet (as illustrated by dotted line 7 a 05), where the NDI=1 in the control signaling. A state on the specific field indicates the payload size, and the default value of the RV applies.
As regards the scenario shown in FIG. 7 b, in step 7 b 04, the terminal fails to receive the control signaling and returns a DTX, which is mistaken as ACK by the base station. The remaining steps are the same as the counterpart in FIG. 7 a, and are not repeated here any further.
Scenario 6: In this scenario, the base station receives a DTX returned by the terminal in the process of transmitting the packet initially. As shown in FIG. 8, the DTX may indicate an error of the initially transmitted control signaling, or the terminal that transmits the packet initially returns a NACK which is mistaken as DTX by the base station, or the terminal that transmits the packet initially returns an ACK which is mistaken as DTX by the base station.
Step 801: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 801), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size. The default value of the RV applies.
Step 802: The terminal fails to receive the control signaling, and therefore, returns a DTX.
An alternative of this step may include the steps where, the terminal receives the control signaling successfully but fails to receive the data. The terminal returns a NACK which is mistaken as DTX by the base station, as described in step 802′.
Another alternative of this step may include, the terminal receives the control signaling and data successfully. The terminal returns an ACK which is mistaken as DTX by the base station, as described in step 802″.
Step 803: The base station sends the control signaling again and retransmits the packet (as illustrated by dotted line 803), where the NDI=0 in the control signaling. A state on the specific field indicates the payload size. The default value of the RV may apply.
Step 804: The terminal receives the packet successfully, and therefore, returns an ACK message.
Scenario 7: In this scenario, in the process of retransmitting the packet, the base station receives a DTX returned by the terminal and the maximum retransmission count is not reached. Therefore, the base station sends the control signaling again and retransmits the packet, where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size, and the default value of the RV applies; or a state on the field indicates the RV.
The scenario may be divided into two circumstances, as shown in FIG. 9 a and FIG. 9 b respectively.
FIG. 9 a illustrates the following steps.
Step 9 a 01: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 9 a 01), where the NDI=0 in the control signaling. A state on the specific field indicates the payload size. The default value of the RV applies.
Step 9 a 02: The terminal fails to receive the packet, and therefore, returns a NACK.
Step 9 a 03: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 9 a 03), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
Step 9 a 04: The terminal fails to receive the control signaling, and therefore, returns a DTX.
An alternative of this step may include that the terminal fails to receive the packet, and therefore, returns a NACK, which is mistaken as DTX by the base station, as described in step 9 a 04′.
Another alternative of this step may include that the terminal receives the packet successfully, and therefore, returns an ACK, which is mistaken as DTX by the base station, as described in step 9 a 04″.
Step 9 a 05: The terminal obtains the payload size correctly beforehand in the foregoing steps 9 a 04, 9 a 04′ and 9 a 04″. Therefore, in step 9 a 05, when the base station sends the control signaling, it is not necessary to send the payload size again, but the RV2 is sent instead. A state on the specific field indicates the RV2, and the packet is retransmitted (as illustrated by dotted line 9 a 05).
Step 9 a 06: The terminal receives the packet correctly, and therefore, returns an ACK.
FIG. 9 b illustrates the following steps.
Step 9 b 01: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 9 b 01), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size. The default value of the RV applies.
Step 9 b 02: The terminal fails to receive the control signaling, and therefore, returns a DTX, which is mistaken as NACK by the base station.
Step 9 b 03: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 9 b 03), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
Step 9 b 04: The terminal returns a DTX.
In this step, the terminal may receive the control signaling successfully or not. In either case, the terminal may not receive the retransmitted packet because the control signaling carries no payload size message even if the control signaling is received successfully, and no payload size message is obtained from the previous control signaling.
Step 9 b 05: The base station sends the control signaling again and retransmits the packet (as illustrated by dotted line 9 b 05), where the NDI=0 in the control signaling. A state on the specific field indicates the payload size. The default value of the RV may apply.
Step 9 b 06: The terminal receives the control signaling and packet successfully, and therefore, returns an ACK.
The scenarios 9 a and 9 b may reveal that when the base station receives a DTX returned by the terminal, a state on the field in the control signaling to be transmitted next time indicates the payload size or RV.
The base station may determine whether the field in the control signaling to be transmitted next time indicates the RV rather than the conventional payload size according to whether the count of transmission of the packet reaches a pre-defined value. Generally, if the count of transmission of the packet reaches or exceeds the pre-defined value, it is determined that the terminal obtains the payload size successfully in the previous transmission process. Therefore, the base station may let the field carry the RV in the next signaling transmission.
Scenario 8: In this scenario, when the maximum retransmission count is reached in the retransmission process, the base station receives a DTX returned by the terminal, and therefore, transmits a new packet, as shown in FIG. 10:
Step 1001: The base station sends the control signaling corresponding to the packet initially and sends the packet (as illustrated by dotted line 1001), where the NDI=0 in the control signaling. A state on the specific field in the control signaling indicates the payload size. The default value of the RV applies.
Step 1002: The terminal fails to receive the packet, and therefore, returns a NACK.
Step 1003: The base station sends the control signaling again, and retransmits the packet (as illustrated by dotted line 1003), where NDI=0 in the control signaling. A state on the specific field indicates the RV1.
Step 1004: The base station sends the control signaling corresponding to the packet at the last attempt, and retransmits the packet (as illustrated by dotted line 1004), where NDI=0 in the control signaling. A state on the specific field indicates the RV_max.
Step 1005: The terminal fails to receive the control signaling, and therefore, returns a DTX.
An alternative of this step may include that the terminal fails to receive the packet, and therefore, returns a NACK, which is mistaken as DTX by the base station, as described in step 1005′.
Another alternative of this step may include that the terminal receives the packet successfully, and therefore, returns an ACK, which is mistaken as DTX by the base station, as described in step 1005″.
Under any situation, the packet is referred to the upper layer subsequently.
Step 1006: The base station sends the control signaling corresponding to a new packet initially and sends the new packet, where the NDI=1 in the control signaling. A state on the specific field indicates the payload size. The default value of the RV applies.
Eight scenarios of applying the embodiments of the present invention are described above, taking downlink data transmission as an example. In practice, the method under the present invention may be applicable to uplink data transmission as well.
The foregoing embodiments of the present invention reveal that different states of one field in the control signaling may indicate the payload size or RV. At the time of sending the control signaling, the payload size or RV that is sent is indicated on the specific field, thus vacating the field occupied by the information not required to be indicated, and saving physical resources.
An apparatus for sending control signaling consistent with some embodiments is described below. FIG. 11 is a block diagram of the apparatus. The apparatus may include multiple units, including, for example: a control signaling generating unit 111, adapted to generate control signaling, where different states of one field in the control signaling indicate the payload size or RV; and a control signaling sending unit 112, connected with the control signaling generating unit 111 and adapted to send the control signaling indicative of the payload size or RV on the field.
The control signaling generating unit 111 may further include: a control signaling determining unit 1111, adapted to determine whether the data that needs to be indicated on the field of the sent control signaling is payload size or RV; and a control signaling field filling unit 1112, adapted to fill the field of the control signaling according to the payload size or RV determined by the control signaling determining unit 1111. The control signaling determining unit 1111 determines that the data to be indicated on the field of the control signaling is a payload size if the packet is transmitted initially. The control signaling determining unit 1111 determines that the data to be indicated on the field of the control signaling is an RV if the packet transmission count reaches or exceeds a pre-defined value when DTX is detected; and determines that the data to be indicated on the field of the control signaling is a payload size if the packet transmission count does not reach the pre-defined value in the retransmission process. The control signaling determining unit 1111 determines that the data to be indicated on the field of the control signaling is an RV if data transmission failure is detected.
The apparatus may be integrated in the transmitter of the control signaling, for example, in a base station. In case where the transmitter may be a base station, the receiver may be a terminal.
The process of sending control signaling through the foregoing apparatus may be similar, and is not repeated here any further.
The foregoing embodiments may reveal that different states of one field in the control signaling may indicate the payload size or RV. At the time of sending the control signaling, the payload size or RV sent is indicated on the generated field, thus vacating the field occupied by the information not required to be indicated, and saving physical resources.
Although the invention has been described through some exemplary embodiments, the invention is not limited to such embodiments. It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. The invention is intended to cover the modifications and variations provided that they fall in the scope of protection defined by the following claims or their equivalents.
1. A method of signaling, the method comprising: sending first control signaling; receiving a first packet associated with the first control signaling; sending second control signaling; and receiving a second packet associated with the second control signaling; wherein the first control signaling comprises a field and the field includes N bits; wherein the first packet is an initial transmission and the field is indicative of a payload size by using all N bits; and wherein the second control signaling comprises the field, wherein the second packet is a retransmission and the field is indicative of a redundancy version by using all the N bits.
2. The method of claim 1, wherein the redundancy version is a default value if the first control signaling is indicative of the payload size on the field.
3. The method of claim 1, wherein the second packet is a retransmission related to the first packet.
4. The method of claim 1, wherein the method is performed by a base station.
5. An apparatus of signaling, comprising: a transmitter, configured to send first control signaling and second control signaling; and a receiver, configured to receive a first packet associated with the first control signaling and a second packet associated with the second control signaling; wherein the first control signaling comprises a field and the field includes N bits; wherein the first packet is an initial transmission and the field is indicative of a payload size by using all N bits; and wherein the second control signaling comprises the field, wherein the second packet is a retransmission and the field is indicative of a redundancy version by using all the N bits.
6. The apparatus of claim 5, wherein the redundancy version is a default value if the first control signaling is indicative of the payload size on the field.
7. The apparatus of claim 5, wherein the apparatus is integrated into a base station.
8. The apparatus of claim 5, wherein the second packet is a retransmission related to the first packet.
US13727932 2007-04-27 2012-12-27 Method and apparatus for sending control signaling Active 2028-06-29 US9036524B2 (en)
CN200710097679 2007-04-27
CN 200710097679 CN101296165B (en) 2007-04-27 2007-04-27 Method and device for transmitting control signaling
CN200710097679.0 2007-04-27
PCT/CN2008/070822 WO2008131693A1 (en) 2007-04-27 2008-04-28 Method and apparatus for transmitting a control signaling
US12432882 US8265023B2 (en) 2007-04-27 2009-04-30 Method and apparatus for sending control signaling
US13544238 US8369278B2 (en) 2007-04-27 2012-07-09 Method and apparatus for sending control signaling
US13727932 US9036524B2 (en) 2007-04-27 2012-12-27 Method and apparatus for sending control signaling
US14713808 US20150327221A1 (en) 2007-04-27 2015-05-15 Method and Apparatus for Sending Control Signaling
US13544238 Continuation US8369278B2 (en) 2007-04-27 2012-07-09 Method and apparatus for sending control signaling
US14713808 Continuation US20150327221A1 (en) 2007-04-27 2015-05-15 Method and Apparatus for Sending Control Signaling
US20130114544A1 true US20130114544A1 (en) 2013-05-09
US9036524B2 true US9036524B2 (en) 2015-05-19
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US13544238 Active US8369278B2 (en) 2007-04-27 2012-07-09 Method and apparatus for sending control signaling
US13727932 Active 2028-06-29 US9036524B2 (en) 2007-04-27 2012-12-27 Method and apparatus for sending control signaling
US14713808 Pending US20150327221A1 (en) 2007-04-27 2015-05-15 Method and Apparatus for Sending Control Signaling
US (4) US8265023B2 (en)
EP (5) EP2521327B1 (en)
CN (2) CN102387485B (en)
DE (1) DE202008018321U1 (en)
ES (3) ES2534376T3 (en)
WO (1) WO2008131693A1 (en)
CN106357366A (en) 2008-03-12 2017-01-25 松下电器（美国）知识产权公司 Communication apparatus and communication method
CN101753278B (en) 2008-12-16 2012-12-12 华为技术有限公司 Data receiving feedback method and terminal
EP2400685A1 (en) * 2010-06-22 2011-12-28 HTC Corporation Method of handling a damage information-assisted hybrid arq scheme and related communication device
US20160270102A1 (en) * 2015-03-14 2016-09-15 Qualcomm Incorporated Distributed scheduling to control interference for data transactions using grant-less transmissions
CN1336041A (en) 1999-01-07 2002-02-13 三星电子株式会社 A data communication device and method in a CDMA communication system
CN1347606A (en) 1999-02-19 2002-05-01 艾利森电话股份有限公司 Method and system for control signalling enabling flexible link adaption in radiocommunication system
CN1378395A (en) 2001-03-26 2002-11-06 Lg电子株式会社 Method for tramsmitting and receiving data grouping by using mixed automatic repeate demand
US20030157953A1 (en) 2002-02-15 2003-08-21 Arnab Das Express signaling in a wireless communication system
CN1472973A (en) 2002-04-09 2004-02-04 日本电气株式会社 Improved command plan for high speed downward chain package connection
US20050048920A1 (en) 2003-08-26 2005-03-03 Jung-Tao Liu Method of control signaling in wireless communications
US20050250454A1 (en) 2004-05-06 2005-11-10 Benoist Sebire Redundancy version implementation for an uplink enhanced dedicated channel
CN1700630A (en) 2001-03-26 2005-11-23 Lg电子株式会社 Method of packet transmission using hybrid automatic repeat request
WO2006002658A1 (en) 2004-06-29 2006-01-12 Telefonaktiebolaget Lm Ericsson (Publ) Packet-based data processing technique
WO2006058173A2 (en) 2004-11-24 2006-06-01 Qualcomm Incorporated Digital data interface device message format
US20060148507A1 (en) * 2005-01-05 2006-07-06 Henrik Liljestrom Data transmission in mobile communication system
US7301929B2 (en) 2002-08-09 2007-11-27 Spyder Navigations, L.L.C. Method and system for transport block size signaling based on modulation type for HSDPA
US20080056229A1 (en) 2005-10-31 2008-03-06 Qualcomm Incorporated Method and apparatus for low-overhead packet data transmission and control of reception mode
US20080081651A1 (en) 2004-08-10 2008-04-03 Nahoko Kuroda Communication Control Method, Radio Communication System, Base Station, and Mobile Station
WO2008084989A2 (en) 2007-01-11 2008-07-17 Lg Electronics Inc. Methods and mobile communication terminals for transmitting and receiving data according to the harq process
US7403513B2 (en) 2002-03-26 2008-07-22 Samsung Electronics Co., Ltd Apparatus and method for coding and decoding CQI information in communication system using high speed downlink packet access
US20080212608A1 (en) * 2007-01-09 2008-09-04 Nokia Corporation Method, apparatus and computer program to signal additional modulation scheme without additional signalling overhead
US7426201B2 (en) 2001-12-28 2008-09-16 Samsung Electroncis Co., Ltd Apparatus and method for transmitting/receiving a high speed-shared control channel in a high speed downlink packet access communication system
US7450611B2 (en) 2001-10-05 2008-11-11 Samsung Electronics Co., Ltd Apparatus and method for transmitting and receiving TBS information in an HSDPA communication system
US20080313521A1 (en) * 2007-06-18 2008-12-18 Nokia Siemens Networks Oy Method for dynamic interpretation of transport block size
EP2015602A1 (en) 2006-05-01 2009-01-14 NTT DoCoMo, Inc. Mobile station, base station, and communication control method
WO2009022822A2 (en) 2007-08-10 2009-02-19 Lg Electronics Inc. Method of data communication in a wireless communication system
US7680076B2 (en) * 2004-09-15 2010-03-16 Siemens Aktiengesellschaft Method for combining data packets by a telecommunication device
US7808955B2 (en) * 2003-09-26 2010-10-05 Cinterion Wireless Modules Gmbh Method for transmitting control data between a base station and a mobile station
US7813379B2 (en) 2005-12-12 2010-10-12 Samsung Electronics Co., Ltd Apparatus and method for transmitting and receiving wireless packet data
US7948932B2 (en) 2004-11-25 2011-05-24 Fujitsu Limited Radio communication apparatus, and mobile station
US8489651B2 (en) * 2011-03-25 2013-07-16 Microsoft Corporation Reconstruction of garbage collection information
US7584397B2 (en) * 2004-06-10 2009-09-01 Interdigital Technology Corporation Method and apparatus for dynamically adjusting data transmission parameters and controlling H-ARQ processes
US6594244B1 (en) 1999-01-07 2003-07-15 Samsung Electronics Co., Ltd. Data communication device and method in a CDMA communication system
US20080043777A1 (en) 2001-03-26 2008-02-21 Yun Young W Method of transmitting or receiving a data packet in packet data communication system using hybrid automatic repeat request
US20040047321A1 (en) 2002-04-09 2004-03-11 Nec Corporation Signalling scheme for high speed downlink packet access
US7263088B2 (en) 2002-04-09 2007-08-28 Nec Corporation Signalling scheme for high speed downlink packet access
CN1233181C (en) 2002-04-09 2005-12-21 日本电气株式会社 Improved signalling scheme for high speed downlink packet access
US7657815B2 (en) * 2003-08-14 2010-02-02 Panasonic Corporation Time monitoring of packet retransmissions during soft handover
WO2005109727A1 (en) 2004-05-06 2005-11-17 Nokia Corporation A redundancy version implementation for an uplink enhanced dedicated channel
3rd Generation Partnership Project; "Technical Specification Group Radio Access Network; Physical layer procedures" (release 8) 3GPP TS 36.213 V1.0.0 (Mar. 2007).
Chinese Office Action dated Sep. 4, 2009, in related Chinese Application No. 2007100976790.
Chinese Search Report received in Application No. 201110269715.3 mailed Sep. 17, 2013, 2 pages.
EPO Extended European Search Report dated Sep. 6, 2012, issued in related European Application No. 12178466.4, Huawei Technologies Co., Ltd., 14 pages.
Extended European Search Report mailed Apr. 26, 2011, issued in related Application No. 08734180.6-2415, PCT/CN2008/070822, filed Apr. 28, 2008, Huawei Technologies Co., Ltd.
Extended European Search Report mailed May 8, 2012, issued in related Application No. 12163016.4-2415 Huawei Technologies Co., Ltd.
International Search Report from P.R. China in International Application No. PCT/CN2008/070822 mailed Aug. 14, 2008.
U.S. Office Action issued in related U.S. Appl. No. 12/432,822, Xianghua Wang, dated Oct. 25, 2010, for Huawei Tech. Co., Ltd.
U.S. Office Action issued in related U.S. Appl. No. 12/432,882, Xianghua Wang, dated Mar. 17, 2011, for Huawei Tech. Co., Ltd.
U.S. Office Action issued in related U.S. Appl. No. 12/432,882, Xianghua Wang, dated Mar. 9, 2012, for Huawei Tech. Co., Ltd.
U.S. Office Action issued in related U.S. Appl. No. 12/432,882, Xianghua Wang, dated Sep. 28, 2011, for Huawei Tech. Co., Ltd.
Written Opinion of the International Searching Authority mailed Aug. 14, 2008, issued in related Application No. PCT/CN2008/070822, filed Apr. 28, 2008, Huawei Technologies Co., Ltd.
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US20150327221A1 (en) 2015-11-12 application
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EP2557741B1 (en) 2014-12-31 grant
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WO2008131693A1 (en) 2008-11-06 application
US8369278B2 (en) 2013-02-05 grant
US20130114544A1 (en) 2013-05-09 application
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US20090213876A1 (en) 2009-08-27 application
EP2077645A1 (en) 2009-07-08 application
US20120275368A1 (en) 2012-11-01 application
US8265023B2 (en) 2012-09-11 grant
EP2077645A4 (en) 2011-05-25 application
EP2475136B1 (en) 2014-12-31 grant
EP2521327A1 (en) 2012-11-07 application
ES2392566T3 (en) 2012-12-11 grant
EP2557741A1 (en) 2013-02-13 application
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CN102387485A (en) 2012-03-21 application
EP2475136A1 (en) 2012-07-11 application
US20090103500A1 (en) 2009-04-23 Re-transmission capability in semi-persistent transmission
US20040009786A1 (en) 2004-01-15 Method and apparatus for reducing uplink and downlink transmission errors in a third generation cellular system
US7764661B2 (en) 2010-07-27 Method and apparatus for changing TTI based on a HARQ process in an enhanced uplink dedicated channel
US20090129317A1 (en) 2009-05-21 ACK/NACK DTX detection
EP1638239A1 (en) 2006-03-22 Extended repeat request scheme for mobile communication networks
US20100235705A1 (en) 2010-09-16 Method for retransmitting data in the multi-carrier system
US20050281212A1 (en) 2005-12-22 Wireless access communication system for data retransmission, data retransmission apparatus and method
US20100172295A1 (en) 2010-07-08 Technique for Uplink Data Transmissions in Communication Networks
CN101383683A (en) 2009-03-11 Feedback information sending method and device