Patent ID: 12262321

DETAILED DESCRIPTION

This disclosure relates to configuration of signal transmission, and to transmission of a signal. This applies both to a network node and to a wireless communication device, respectively. The signal may be a WUS, e.g. for an LTE-MTC or NB-IoT context, but the approach may be applied to other types of signals and/or contexts.FIG.2is a flow chart schematically illustrating operations of the network node where the network node transmits200a signal configuration to associated wireless devices. A wireless device may be associated with a network node by, for example, being served by or camping on a cell served by the network node. When the signal is transmitted202to the addressed wireless device(s), the wireless devices know the signal configuration and will be able to detect the signal. Similarly,FIG.3is a flow chart schematically illustrating operations of the wireless communication device. The wireless communication device receives300information about the signal configuration. The wireless communication device is then capable of properly receiving302the signal.

In a network configuration aspect, the network node transmits configuration information to devices associated with the network node for the wireless devices to be able to receive a signal according to the configuration. Hence, the disclosure provides a method in a network node for transmitting a signal configuration message to devices associated with the network node, where said signals may be transmitted in different adjacent time-frequency resources and where the resource is depending on properties of the device, such as belonging to a certain group, etc.

The time-frequency resources may be time multiplexed, as illustrated inFIG.4, or be frequency multiplexed, as illustrated inFIG.5, or be multiplexed in both time and frequency, as illustrated inFIG.6.

Here, the term “adjacent” should be construed in its context of that the receiver to receive the signal is desired to operate in a narrow band, e.g. 1.4 MHz or narrower, compared with a band in which a cellular receiver usually operates, e.g. 20 MHz or wider, and that the receiver to receive the signal should be on only for a short time, both to save energy. Thus, “adjacent” should thus be construed as within such limitations but not necessarily consecutive time and/or frequency PRBs.

FIG.7is a flow chart which schematically illustrates transmission of signal configuration, CfFIG.2, block200, to be performed by a network node. The signal configurations comprise different resource allocations. The network node determines702resource allocations based on a determined set of resources to be used for transmitting a signal, e.g. a WUS. The resource allocations can be for two or more wireless devices or groups of wireless devices, with e.g. the aim of unnecessarily waking up wireless devices. The resource allocations can for example be any of those demonstrated with reference toFIGS.4to6. In one case, the network node determines the signal configuration by reading a file from a memory storage whereas in another case, the network node determines the configuration by receiving configuration information through signalling from a network node, e.g. from a core network node.

For the case where more than two groups of wireless devices are feasible, e.g. as by the possible resource allocations shown inFIG.6, the network node may determine701a number of groups to address by the resource allocations. Here, it should be noted that a plurality of groups may share one resource, but for the benefits of the approach provided in this disclosure, the case where at least some different groups are allocated to different resources is mainly considered. An indication on number of groups can represent a number of groups per resource allocation or a number of groups for all resource allocations. Based on the collected information, a group-to-allocation relation is determined704. That is, the groups have an association to a signal configuration through their resource allocations. Information about the group-to-allocation relation is transmitted706from the network node through a system information (SI) message, such as a broadcasted message or a dedicated radio resource control (RRC) message.

The signal configuration may comprise a resource sequence for respective resource allocation. The information about the signal configurations may comprise indications on the used resource sequences. For example, the first resource allocation is associated with a first resource sequence and the second resource allocation is associated with a second resource sequence, where the second resource sequence is a phase shifted version of the first resource sequence. That is, each symbol is assigned with a phase shift, e.g. +/−π/2, π, etc. The phase shifts may be on a symbol level or for larger parts of the sequence of symbols, or for the whole sequence. For example, the phase shifted version of the first resource sequence may comprise an inverted version of the first resource sequence, i.e. each symbol of the second resource sequence is phase shifted with7E in relation to the first resource sequence. Another example is that the second resource sequence is an element shifted version of the first resource sequence. That is, each element in the second resource sequence is cyclically shifted one or more steps in relation to the first resource sequence. Information about the signal configurations may in such cases indicate the shifts.

A further example is that the resource sequence is a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code, where the first resource allocation is associated with a first resource sequence having a first index of the Zadoff-Chu sequence and the second resource allocation is associated with a second resource sequence having a second index of the Zadoff-Chu sequence. The indices may be included in the indications on the used resource sequences. In another example, the resource sequence is a Zadoff-Chu sequence which is elementwise multiplied with a scrambling sequence, where the initialisation of the scrambling sequence is determined based on the first and second resource allocation, respectively.

Still a further example is that the second resource sequence comprises an element-to-resource element mapping permutation of the first resource sequence. For example, the mapping permutation may comprise that symbols are cyclically shifted or reordered, e.g. opposite order, in frequency and/or time.

The mutual rearranging of the sequences may provide for limitation of PAPR when the resource allocations are frequency-wise.

FIG.8is a flow chart which schematically illustrates transmission of a signal, CfFIG.2, block202, to be performed by a network node to a wireless device. The signal can for example be a WUS. The transmission is to be performed according to a signal configuration associated with the resource allocation for the respective group.

The network node receives800a paging message from another network node, e.g. a core network node, which paging is intended for a wireless device belonging to a first group of wireless devices. It is determined802, based on the received paging message, a signal resource allocation and the group of the wireless device. The resource allocation can be retrieved from a network node or be determined from a memory storage. The network node can thus determine804a signal sequence based on the signal resource allocation and the group of the wireless device. The addressed wireless device(s) is(are) assumed to be watching for the signal, and with the properties of the signal, in the allocated resource by a previous signalling of the signal configuration as demonstrated with reference toFIG.7. The network node then transmits806the signal comprising the determined signal sequence using the determined signal resource allocation. For the case of the signal being a WUS, the wireless device starts monitoring a paging channel upon proper reception of the signal wherein the wireless device can receive the paging message, which is transmitted on its PO.

The received paging message may for example comprise device identity, service information, paging rate, subscriber identity module (SIM) information, categorisations such as whether being UL or DL heavy, etc.

The determination804of the signal sequence may comprise an elementwise multiplication of a resource sequence, which may be according to any of the examples demonstrated above, with a group sequence. The group sequence is may be an elementwise rearranging based on the group, e.g. a phase shift. The group sequence may be a Gold scrambling code based on the group. The group sequence may alternatively be a time-frequency short orthogonal code based on the group.

Alternatively, the signal sequence may be determined804to be the resource sequence, possibly scrambled with a scrambling code such as a Gold scrambling code.

The signal is then transmitted806.

According to one example, the signal to transmit806is a resource sequence elementwise multiplied with a UE group sequence. In one case, the resource sequence is a Zadoff-Chu sequence elementwise multiplied with a scrambling sequence. In this case, the Zadoff-Chu sequence may be related to the cell identity (ID) or parts of the cell ID, for example in the same or similar way as in the definition of the MWUS as described in 3GPP specification 36.211, Sec. 6.11B, and also included above, where the cell ID is used to determine the sequence index u. Similarly, the scrambling sequence may be related to a related timing information, e.g., timing location for a subsequent PO, in the same or similar way as in the definition of the MWUS, where nf_start_POand ns_start_POare used in the expression for the variable cinit_WUSwhich parameterizes the initialisation of the scrambling sequence. As explained in the referenced clause 7.2 of 36.211, the initialisation variable of a pseudo-random sequence in 3GPP, such as the scrambling sequence, can generally be represented by an integer cinitwhich is related to an initialisation bit string x2via the expression cinit=Σi=030x2(i)·2i, where the bit string x2describes the initial state for the scrambling sequence generation. Therefore, at least some of the bits in the initialisation bit string x2may be related to the timing location, e.g. as in the existing MWUS definition using different values of nf_start_POand ns_start_PO. In one case, the initialisation of the scrambling sequence may further be related to the resource in which the signal will be transmitted such that one or more bits are determined by the signal resource. Furthermore, in one case, the UE group sequence is an elementwise phase shift of the resource sequence as described in 3GPP contribution R1-1905956. In another case, the UE group sequence is a Gold scrambling code, the initialisation of which is determined by the UE group as described in 3GPP contribution R1-1907569, Sec. 4. In yet another case, the UE group sequence is a time-frequency short orthogonal cover code determined by the UE group as described in 3GPP contribution R1-1906772, Sec. 3.

FIG.9is a block diagram schematically illustrating a network node900according to an embodiment. The network node900comprises an antenna arrangement902, a receiver904connected to the antenna arrangement902, a transmitter906connected to the antenna arrangement902, a processing element908which may comprise one or more circuits, one or more input interfaces910and one or more output interfaces912. The interfaces910,912can be operator interfaces and/or signal interfaces, e.g. electrical or optical. The network node900is arranged to operate in a cellular communication network. In particular, by the processing element908being arranged to perform the embodiments demonstrated with reference toFIGS.1to8, the network node900is capable of providing a signal configuration and/or providing a signal, e.g. a WUS. The processing element908can also fulfil a multitude of tasks, ranging from signal processing to enable reception and transmission since it is connected to the receiver904and transmitter906, executing applications, controlling the interfaces910,912, etc.

The methods according to the present disclosure is suitable for implementation with aid of processing means, such as computers and/or processors, especially for the case where the processing element908demonstrated above comprises a processor handling the provision of signal configuration and/or the signal as demonstrated above. Therefore, there is provided computer programs, comprising instructions arranged to cause the processing means, processor, or computer to perform the steps of any of the methods according to any of the embodiments described with reference toFIGS.1to8. The computer programs preferably comprise program code which is stored on a computer readable medium1000, as illustrated inFIG.10, which can be loaded and executed by a processing means, processor, or computer1002to cause it to perform the methods, respectively, according to embodiments of the present disclosure, preferably as any of the embodiments described with reference toFIGS.1to8. The computer1002and computer program product1000can be arranged to execute the program code sequentially where actions of the any of the methods are performed stepwise, or execute the actions on a real-time basis where appropriate. The processing means, processor, or computer1002is preferably what normally is referred to as an embedded system. Thus, the depicted computer readable medium1000and computer1002inFIG.10should be construed to be for illustrative purposes only to provide understanding of the principle, and not to be construed as any direct illustration of the elements.

FIG.11is a flow chart illustrating a method of retrieving information about a signal to be detected by a wireless communication device. The wireless communication device receives1100information about a signal configuration for the signal to be detected. The signal configuration is received1100in a system information message which is transmitted to a plurality of groups of wireless devices mutually having different resource allocations. The wireless communication device determines a first resource allocation for the wireless communication device from the received signal configuration. The system information message may be in a broadcast message, or in a dedicated RRC message.

The first resource allocation and a second resource allocation targeting other wireless devices may be two resource allocations adjacent in time or two resource allocations adjacent in frequency. The resource allocations may be made in both time and frequency simultaneously. Thus, more than two resource allocations may be present, as demonstrated with reference toFIG.6.

The wireless communication device can belong to a first group, and the wireless transmission of the information about the signal configurations can include information about a number of used groups. The information about the number of groups may be represented by a number of groups per resource allocation or a number of groups for all resource allocations.

The signal configuration may comprise a resource sequence for respective resource allocation, and the information about the signal configurations may be received in a system information message comprising indications on the used resource sequence. As discussed above, the resource sequence can be a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code or scrambling sequence, where index is included in the indication on the used resource sequence. For example, the initialisation of the scrambling sequence may further be based on the resource in which the signal will be transmitted such that one or more bits are determined by the signal resource.

Other examples as of above are also that the indication on the used resource sequence comprises information about any of a phase shift of the resource sequence, an element shift of the resource sequence, and an element-to-resource element mapping permutation of the resource sequence.

FIG.12is a flow chart schematically illustrating a method of detecting a received signal by the wireless communication device. The wireless communication device determines1200a signal configuration. The signal configuration may be inherently known, or may be retrieved as demonstrated with reference toFIG.11. A resource allocation for the signal is determined1202. A group to which the wireless communication device belongs may also be determined. A signal sequence to be attentive to is determined1204based on determining a signal sequence based on the resource allocation and the group. When the wireless communication device receives1206any available signals, the signal is detected1208among the received signals by identifying the signal sequence at the determined resource allocation. Since the resource allocation is known, and the signal sequence is formed for easy detection, e.g. through correlation, the wireless communication device will be able to perform the detection1208in an energy efficient way.

The signal configuration thus provides for the wireless communication device to perform the energy efficient detection by the knowledge about which resource to look in and what sequence to look for. The determining1204of the sequence to be attentive to may comprise forming the sequence based on a resource sequence and a group sequence, e.g. by elementwise multiplying the resource sequence with the group sequence. As discussed above, the resource sequence may be a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code, such as a Gold scrambling code, or other scrambling sequence wherein an index of the Zadoff-Chu sequence is based on the allocated resource and/or indicated in a received signal configuration. Initialisation of the scrambling sequence may further be related to the resource in which the signal will be transmitted such that one or more bits are determined by the signal resource. The one or more bits may be determined by the signal resource. The initialisation may refer to the initialisation string represented by the cinitas referred to above. As also discussed above, the signal configuration can comprise information about a resource sequence for respective resource allocation, and a differentiation between resource sequences for different wireless communication devices or groups of wireless communication devices can comprise any of a phase shift of the resource sequence, an element shift of the resource sequence, and an element-to-resource element mapping permutation of the resource sequence.

The group sequence can for example be an elementwise phase shift based on the group, a Gold scrambling code based on the group, or a time-frequency short orthogonal code based on the group.

The received signal can comprise a wake-up signal causing the wireless communication device to listen for a paging message at a next PO, but the approach can also be used for other purposes where only very little information is needed in DL. To mention one example, the purpose can be to trigger an IoT device to provide a measurement value or take a predetermined action, e.g. closing/opening a valve or switch.

FIG.13is a block diagram schematically illustrating a wireless communication device such as a UE1300according to an embodiment. The UE comprises an antenna arrangement1302, a receiver1304connected to the antenna arrangement1302, a transmitter1306connected to the antenna arrangement1302, a processing element1308which may comprise one or more circuits, one or more input interfaces1310and one or more output interfaces1312. The interfaces1310,1312can be user interfaces and/or signal interfaces, e.g. electrical or optical. The UE1300is arranged to operate in a cellular communication network. In particular, by the processing element1308being arranged to perform the embodiments demonstrated with reference toFIGS.1to6, the UE1300is capable of receiving a signal configuration and/or detecting a signal, e.g. a WUS. The processing element1308can also fulfil a multitude of tasks, ranging from signal processing to enable reception and transmission since it is connected to the receiver1304and transmitter1306, executing applications, controlling the interfaces1310,1312, etc.

The methods according to the present disclosure is suitable for implementation with aid of processing means, such as computers and/or processors, especially for the case where the processing element1308demonstrated above comprises a processor handling a signal configuration and/or detecting a signal, e.g. a WUS. Therefore, there is provided computer programs, comprising instructions arranged to cause the processing means, processor, or computer to perform the steps of any of the methods according to any of the embodiments described with reference toFIG.1to6. The computer programs preferably comprise program code which is stored on a computer readable medium1400, as illustrated inFIG.14, which can be loaded and executed by a processing means, processor, or computer1402to cause it to perform the methods, respectively, according to embodiments of the present disclosure, preferably as any of the embodiments described with reference toFIGS.1to6. The computer1402and computer program product1400can be arranged to execute the program code sequentially where actions of the any of the methods are performed stepwise. The processing means, processor, or computer1402is preferably what normally is referred to as an embedded system. Thus, the depicted computer readable medium1400and computer1402inFIG.14should be construed to be for illustrative purposes only to provide understanding of the principle, and not to be construed as any direct illustration of the elements.

FIG.15illustrates a wireless network comprising network (NW) nodes1500and1500aand a wireless device1510with a more detailed view of the network node1500and the communication device1510in accordance with an embodiment. For simplicity,FIG.15only depicts core network1520, network nodes1500and1500a, and communication device1510. Network node1500comprises a processor1502, storage1503, interface1501, and antenna1501a. Similarly, the communication device1510comprises a processor1512, storage1513, interface1511and antenna1511a. These components may work together in order to provide network node and/or wireless device functionality as demonstrated above. In different embodiments, the wireless network may comprise any number of wired or wireless networks, network nodes, base stations, controllers, wireless devices, relay stations, and/or any other components that may facilitate or participate in the communication of data and/or signals whether via wired or wireless connections.

The network1520may comprise one or more IP networks, public switched telephone networks (PSTNs), packet data networks, optical networks, wide area networks (WANs), local area networks (LANs), wireless local area networks (WLANs), wired networks, wireless networks, metropolitan area networks, and other networks to enable communication between devices. The network1520may comprise a network node for performing the method demonstrated with reference toFIG.8, and/or an interface for signalling between network nodes1500,1500a.

The network node1500comprises a processor1502, storage1503, interface1501, and antenna1501a. These components are depicted as single boxes located within a single larger box. In practice however, a network node may comprise multiple different physical components that make up a single illustrated component (e.g., interface1501may comprise terminals for coupling wires for a wired connection and a radio transceiver for a wireless connection). Similarly, network node1500may be composed of multiple physically separate components (e.g., a NodeB component and an RNC component, a BTS component and a BSC component, etc.), which may each have their own respective processor, storage, and interface components. In certain scenarios in which network node1500comprises multiple separate components (e.g., BTS and BSC components), one or more of the separate components may be shared among several network nodes. For example, a single RNC may control multiple NodeBs. In such a scenario, each unique NodeB and BSC pair, may be a separate network node. In some embodiments, network node1500may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may be duplicated (e.g., separate storage1503for the different RATs) and some components may be reused (e.g., the same antenna1501amay be shared by the RATs).

The processor1502may be a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software and/or encoded logic operable to provide, either alone or in conjunction with other network node1500components, such as storage1503, network node1500functionality. For example, processor1502may execute instructions stored in storage1503. Such functionality may include providing various wireless features discussed herein to a wireless device, such as the wireless device1510, including any of the features or benefits disclosed herein.

Storage1503may comprise any form of volatile or non-volatile computer readable memory including, without limitation, persistent storage, solid state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), removable media, or any other suitable local or remote memory component. Storage1503may store any suitable instructions, data or information, including software and encoded logic, utilized by the network node1500, the storage1503may be used to store any calculations made by the processor1502and/or any data received via the interface1501.

The network node1500also comprises the interface1501which may be used in the wired or wireless communication of signalling and/or data between network node1500, network1520, and/or wireless device1510. For example, the interface1501may perform any formatting, coding, or translating that may be needed to allow network node1500to send and receive data from the network1520over a wired connection. The interface1501may also include a radio transmitter and/or receiver that may be coupled to or a part of the antenna1501a. The radio may receive digital data that is to be sent out to other network nodes or wireless devices via a wireless connection. The radio may convert the digital data into a radio signal having the appropriate channel and bandwidth parameters. The radio signal may then be transmitted via antenna1501ato the appropriate recipient (e.g., the wireless device1510).

The antenna1501amay be any type of antenna capable of transmitting and receiving data and/or signals wirelessly. In some embodiments, antenna1501amay comprise one or more omnidirectional, sector or panel antennas operable to transmit/receive radio signals between, for example, 2 GHz and 66 GHz. An omnidirectional antenna may be used to transmit/receive radio signals in any direction, a sector antenna may be used to transmit/receive radio signals from devices within a particular area, and a panel antenna may be a line of sight antenna used to transmit/receive radio signals in a relatively straight line. The antenna1501amay comprise one or more elements for enabling different ranks of SIMO, MISO or MIMO operation.

The wireless device1510may be any type of communication device, wireless device, UE, D2D device or ProSe UE, but may in general be any device, sensor, smart phone, modem, laptop, Personal Digital Assistant (PDA), tablet, mobile terminal, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), Universal Serial Bus (USB) dongles, machine type UE, UE capable of machine to machine (M2M) communication, etc., which is able to wirelessly send and receive data and/or signals to and from a network node, such as network node1500and/or other wireless devices. In particular, the wireless device1510is capable of communication as demonstrated above, e.g. in an MTC and/or NB-IoT context. The wireless device1510comprises a processor1512, storage1513, interface1511, and antenna1511a. Like the network node1500, the components of the wireless device1510are depicted as single boxes located within a single larger box, however in practice a wireless device may comprises multiple different physical components that make up a single illustrated component (e.g., storage1513may comprise multiple discrete microchips, each microchip representing a portion of the total storage capacity).

The processor1512may be a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software and/or encoded logic operable to provide, either alone or in combination with other wireless device1510components, such as storage1513, wireless device1510functionality. Such functionality may include providing various wireless features discussed herein, including any of the features or benefits disclosed herein.

The storage1513may be any form of volatile or non-volatile memory including, without limitation, persistent storage, solid state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), removable media, or any other suitable local or remote memory component. The storage1513may store any suitable data, instructions, or information, including software and encoded logic, utilized by the wireless device1510. The storage1513may be used to store any calculations made by the processor1512and/or any data received via the interface1511.

The interface1511may be used in the wireless communication of signalling and/or data between the wireless device1510and the network nodes1500,1500a. For example, the interface1511may perform any formatting, coding, or translating that may be needed to allow the wireless device1510to send and receive data to/from the network nodes1500,1500aover a wireless connection. The interface1511may also include a radio transmitter and/or receiver that may be coupled to or a part of the antenna1511a. The radio may receive digital data that is to be sent out to e.g. the network node1501via a wireless connection. The radio may convert the digital data into a radio signal having the appropriate channel and bandwidth parameters. The radio signal may then be transmitted via the antenna1511ato e.g. the network node1500.

The antenna1511amay be any type of antenna capable of transmitting and receiving data and/or signals wirelessly. In some embodiments, antenna1511amay comprise one or more omnidirectional, sector or panel antennas operable to transmit/receive radio signals between 2 GHz and 66 GHz. For simplicity, antenna1511amay be considered a part of interface1511to the extent that a wireless signal is being used. The antenna1511amay comprise one or more elements for enabling different ranks of SIMO, MISO or MIMO operation.

In some embodiments, the components described above may be used to implement one or more functional modules used for enabling measurements as demonstrated above. The functional modules may comprise software, computer programs, sub-routines, libraries, source code, or any other form of executable instructions that are run by, for example, a processor. In general terms, each functional module may be implemented in hardware and/or in software. Preferably, one or more or all functional modules may be implemented by the processors1512and/or1502, possibly in cooperation with the storage1513and/or1503. The processors1512and/or1502and the storage1513and/or1503may thus be arranged to allow the processors1512and/or1502to fetch instructions from the storage1513and/or1503and execute the fetched instructions to allow the respective functional module to perform any features or functions disclosed herein. The modules may further be configured to perform other functions or steps not explicitly described herein but which would be within the knowledge of a person skilled in the art.

Certain aspects of the inventive concept have mainly been described above with reference to a few embodiments. However, as is readily appreciated by a person skilled in the art, embodiments other than the ones disclosed above are equally possible and within the scope of the inventive concept. Similarly, while a number of different combinations have been discussed, all possible combinations have not been disclosed. One skilled in the art would appreciate that other combinations exist and are within the scope of the inventive concept. Moreover, as is understood by the skilled person, the herein disclosed embodiments are as such applicable also to other standards and communication systems and any feature from a particular figure disclosed in connection with other features may be applicable to any other figure and or combined with different features.

In addition to the disclosure above the following items are given for providing further explanations, alternatives and/or indications on possibly feasible combinations:1. A method of a network node arranged for wireless communication with wireless communication devices, the method being for transmission of signal configurations to the wireless communication devices and comprisingdetermining a first resource allocation and a second resource allocation to use for the signal configuration, wherein the first resource allocation is different and adjacent in time and/or frequency from the second resource allocation;determining a first group and a second group of wireless communication devices, wherein the first resource allocation is allocated to the first group of wireless devices and the second resource allocation is allocated to the second group of wireless devices;wirelessly transmitting information about the signal configurations as a system information message to the first and second groups of wireless devices with the first and second resource allocations, respectively.2. The method of item 1, wherein the wirelessly transmitting of the system information message comprisestransmitting a broadcast message, ortransmitting a dedicated radio resource control message.3. The method of item 1 or 2, wherein the first and second resource allocation comprisestwo resource allocations on same frequency and adjacent in time;two resource allocations on same time and adjacent in frequency; ortwo resource allocations adjacent in time and frequency.4. The method of any one of items 1 to 3, wherein the determining of the first and second resource allocations comprises receiving information about the allocations from another network node.5. The method of any one of items 1 to 3, wherein the determining of the first and second resource allocations comprises retrieving the information about the allocations from a memory storage.6. The method of any one of items 1 to 5, comprising determining a number of groups to use, wherein the wireless transmission of the information about the signal configurations includes information about number of groups.7. The method of item 6, wherein the determining of the number of groups to use comprises receiving information about the number of groups to use from another network node.8. The method of item 6, wherein the determining of the number of groups to use comprises retrieving the information about the number of groups to use from a memory storage.9. The method of any one of items 6 to 8, wherein the information about number of groups represents any ofa number of groups per resource allocation; anda number of groups for all resource allocations.10. The method of any one of items 1 to 9, wherein the signal configuration comprises a resource sequence for respective resource allocation, and the wirelessly transmitting information about the signal configurations as a system information message to the first and second groups of wireless devices also comprises indications on the used resource sequences.11. The method of item 10, wherein the first resource allocation is associated with a first resource sequence and the second resource allocation is associated with a second resource sequence, where the second resource sequence is a phase shifted version of the first resource sequence.12. The method of item 11, wherein the phase shifted version of the first resource sequence comprises an inverted version of the first resource sequence.13. The method of item 10, wherein the first resource allocation is associated with a first resource sequence and the second resource allocation is associated with a second resource sequence, where the second resource sequence is an element shifted version of the first resource sequence.14. The method of item 10, wherein the resource sequence is a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code, the first resource allocation is associated with a first resource sequence having a first initialisation index of the Zadoff-Chu sequence and the second resource allocation is associated with a second resource sequence having a second initialisation index of the Zadoff-Chu sequence, where indices are included in the indications on the used resource sequences.15. The method of item 10, wherein the first resource allocation is associated with a first resource sequence and the second resource allocation is associated with a second resource sequence, where the second resource sequence comprises an element-to-resource element mapping permutation of the first resource sequence.16. A method of a network node arranged for wireless communication with wireless communication devices, the method being for transmission of a signal to the wireless communication devices and comprisingreceiving, from another network node, a paging message intended for a wireless device belonging to a first group of wireless devices;determining, from the received paging message, a signal resource allocation and the group of the wireless device;determining a signal sequence based on the signal resource allocation and the group of the wireless device; andtransmitting the signal comprising the determined signal sequence using the determined signal resource allocation.17. The method of item 16, wherein the transmission of the signal to the wireless communication devices uses a signal configuration communicated according to the method of any one of items 1 to 15,18. The method of item 16 or 17, wherein the determination of the signal sequence comprises elementwise multiplication of a resource sequence with a group sequence.19. The method of item 18, wherein the resource sequence is a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code, wherein an initialisation index of the Zadoff-Chu sequence is based on the allocated resource.20. The method of item 18 or 19, wherein the group sequence is an elementwise resource phase shift based on the group.21. The method of item 18 or 19, wherein the group sequence is a Gold scrambling code based on the group.22. The method of item 18 or 19, wherein the group sequence is a time-frequency short orthogonal code based on the group.23. The method of any one of items 16 to 22, wherein the received paging message comprises any ofdevice identity;service information; andpaging rate.24. The method of any one of items 16 to 23, wherein the transmitted signal comprises a wake-up signal.25. A computer program comprising instructions which, when executed on a processor of a network node, causes the network node to perform the method according to any one of items 1 to 24.26. A method of a wireless communication device, the method being for reception of signal configurations from a network node and comprisingwirelessly receiving information about a signal configuration in a system information message transmitted to a plurality of groups of wireless devices mutually having different resource allocations; anddetermining a first resource allocation for the wireless communication device from the received signal configuration.27. The method of item 26, wherein the wirelessly receiving of the system information message comprisesreceiving a broadcast message, orreceiving a dedicated radio resource control message.28. The method of item 26 or 27, wherein the first resource allocation and a second resource allocation targeting other wireless devices comprisestwo resource allocations on same frequency and adjacent in time;two resource allocations on same time and adjacent in frequency; ortwo resource allocations adjacent in time and frequency.29. The method of any one of items 26 to 28, wherein the wireless communication device belongs to a first group, and the wireless transmission of the information about the signal configurations includes information about a number of used groups.30. The method of item 29, wherein the information about number of groups represents any ofa number of groups per resource allocation; anda number of groups for all resource allocations.31. The method of any one of items 26 to 30, wherein the signal configuration comprises a resource sequence for respective resource allocation, and the wirelessly receiving information about the signal configurations in a system information message comprises receiving indications on the used resource sequence.32. The method of item 31, wherein the resource sequence is a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code, where an initialisation index of the Zadoff-Chu sequence is included in the indication on the used resource sequence.33. The method of item 32, wherein the indication on the used resource sequence comprises information about any ofa phase shift of the resource sequence;an element shift of the resource sequence; andan element-to-resource element mapping permutation of the resource sequence.34. A method of a wireless device, the method being for reception of a signal from a network node and comprisingdetermining a signal configuration;determining a resource allocation and a group from the network configuration;determining a signal sequence to be attentive to based on the resource allocation and the group;wirelessly receiving available signals; anddetecting the signal among received signals by identifying the signal sequence at the determined resource allocation.35. The method of item 34, wherein the determining of the network configuration comprises receiving the network configuration according to the method of any one of items 26 to 33.36. The method of item 34 or 35, wherein the determining of the sequence to be attentive to comprises elementwise multiplying a resource sequence with a group sequence.37. The method of item 36, wherein the resource sequence is a Zadoff-Chu sequence which is elementwise multiplied with a scrambling code, wherein an initialisation index of the Zadoff-Chu sequence is based on the allocated resource.38. The method of item 36, wherein the signal configuration comprises a resource sequence for respective resource allocation, and a differentiation between the resource sequences comprises any ofa phase shift of the resource sequence;an element shift of the resource sequence; andan element-to-resource element mapping permutation of the resource sequence.39. The method of any one of items 36 to 38, wherein the group sequence is an elementwise resource phase shift based on the group.40. The method of any one of items 36 to 38, wherein the group sequence is a Gold scrambling code based on the group.41. The method of any one of items 36 to 38, wherein the group sequence is a time-frequency short orthogonal code based on the group.42. The method of any one of items 34 to 41, wherein the received signal comprises a wake-up signal.43. A computer program comprising instructions which, when executed on a processor of a wireless communication device, causes the wireless communication device to perform the method according to any one of items 26 to 42.44. A network node arranged for wireless communication with wireless communication devices comprising circuitry arranged to perform the method of any one of items 1 to 24.45. A wireless communication device comprising circuitry arranged to perform the method of any one of items 26 to 42.