WUS Signal Design

Abstract

A method of a network node configured for wireless communication with a wireless communication device, for sending a signal to the wireless communication device. The method comprises receiving, from another network node, a paging message intended for wireless devices belonging to a first group of wireless devices, determining, from the received paging message, a signal resource allocation and the group of wireless devices, determining a signal sequence based on the signal resource allocation and the group of wireless devices, and sending a signal comprising the determined signal sequence using the determined signal resource allocation. Methods for a network node and a wireless communication device, as well as a network node and a wireless device and their computer programs are disclosed.

Description

Technical Field

[0001] The present disclosure generally relates to network nodes, wireless communication devices and methods thereof, and computer programs for implementing these methods. In particular, the present disclosure relates to transmitting signals from a network node to a wireless communication device and receiving signals from a network node by the wireless communication device. The present disclosure also relates to determining signal configurations and transmitting signal configurations for efficient transmission of signals. Background Art

[0002] There are technologies covering machine-to-machine (M2M) and / or Internet of Things (IoT) related use cases. There are methods for supporting machine type communication (MTC) with new user equipment (UE) categories Cat-M1, Cat-M2 (supporting six physical resource blocks (PRBs) with reduced bandwidth or up to 24 PRBs for Cat-M2), and narrowband IoT (NB-IoT) UEs (providing a new radio interface and corresponding UE categories Cat-NB1 and Cat-NB2).

[0003] The 3GPP Long Term Evolution (LTE) enhancements introduced for MTC in 3GPP Release 13, 14 and 15 are referred to as "LTE-MTC", also known as "LTE-M" and "eMTC", including but not limited to supporting bandwidth-constrained UEs, Cat-M1, and supporting coverage enhancement. This is to separate the discussion from NB-IoT, and the notations here are for any release, although the supported features are similar at a general level.

[0004] There are several differences between "conventional" LTE and the processes and channels defined for LTE-MTC and for NB-IoT. Some important differences include new physical channels such as the physical downlink control channel (referred to as MPDCCH in LTE-MTC and NPDCCH in NB-IoT) and the new physical random access channel NPRACH for NB-IoT. Another difference is the coverage levels that these technologies can support, also referred to as the coverage enhancement levels. By applying repetition to the transmitted signals and channels, both LTE-MTC and NB-IoT allow the UE to operate down to much lower signal-to-noise ratio (SNR) levels compared to LTE, i.e., Es / Iot≥-15dB which can be compared to the -6dB Es / IoT of "conventional" LTE is the lowest operating point for LTE-MTC and NB-IoT. Here, Es is the measurement of the useful received energy per resource element, and Iot is the measurement of the received power spectral density of the total noise and interference per resource element.

[0005] There are methods for reducing energy consumption. For example, a "Wake-Up Signal" (WUS) based on the transmission of a short signal indicates to the UE that it should continue to decode the downlink (DL) control channel, e.g., the complete NPDCCH for NB-IoT or the MPDCCH for LTE-MTC. If such a signal does not exist, e.g., in a discontinuous transmission (DTX) where the UE cannot detect the signal, the UE can return to sleep without decoding the DL control channel. The decoding time for WUS is much shorter than that of the complete NPDCCH / MPDCCH because WUS basically only needs to contain one-bit information, while NPDCCH / MPDCCH can contain up to approximately 35 bits of information. This in turn reduces the UE power consumption and results in a longer UE battery life. WUS is only sent when there is a paging for the UE. But if there is no paging for the UE, then WUS will not be sent, i.e., it implies DTX, and the UE will return to sleep when it detects DTX instead of WUS. This is illustrated in Figure 1 where the white boxes indicate the possible WUS and paging occasion (PO) positions, while the black boxes indicate the actual WUS and PO positions.

[0006] The specification of Rel-15 WUS is distributed in several parts of the LTE 36-series standards, e.g., 36.211, 36.213, 36.304, and 36.331. The sequence is defined for LTE-MTC in 36.211 as follows:

[0007] …

[0008] The MTC WUS (MWUS) sequence w(m) in subframes x = 0, 1,..., M - 1 is defined by:

[0009]

[0010] m = 0, 1,..., 131

[0011] m' = m + 132x

[0012] n = m mod 132

[0013]

[0014] where M is the actual duration of MWUS.

[0015] Scrambling sequence i = 0, 1,…, 2·132M - 1 is given by Clause 7.2 and shall be initialized at the start of MWUS by:

[0016]

[0017] where n f_start_PO is the first frame of the first PO associated with MWUS, and n s_start_PO is the first time slot of the first PO associated with MWUS.

[0018] The MWUS bandwidth is two consecutive PRBs, the frequency position of the lowest PRB sent by higher layer signaling. For two PRB pairs in the frequency domain for which MWUS is defined, the MWUS sequence w(m) shall be mapped to resource elements (k, l) in sequence, first starting from w(0) in ascending order of index and then continuing in ascending order of index in each subframe in which MWUS is sent.

[0019] …

[0020] From the above equations, it can be seen that the WUS sequence depends only on the moment of the PO associated with it and the eNodeB (eNB) cell id. This means that it is impossible to further distinguish the paged UEs among the UEs belonging to the same PO. In most cases, only a single UE is paged at a time, in which case the remaining UEs will unnecessarily monitor subsequent MPDCCHs.

[0021] The same sequence is used for NB-IoT, however in this case only one PRB is used, i.e., the signal is not repeated.

[0022] In the upcoming release, WUS is further developed to also include UE grouping, so that the number of UEs sensitive to WUS is further reduced to a smaller subset of the UEs associated with a specific PO. Traditional WUS is designed such that all UEs belong to the same group. That is, the WUS sent associated with a specific PO can wake up all UEs configured to detect paging at that PO. Therefore, all UEs that are not the target of that paging will be unnecessarily woken up.

[0023] In addition, traditional WUS occupies only a single resource per PO, where the (WUS) resource refers to the specific position of WUS in time and frequency. In contrast, the upcoming WUS including UE grouping will be configurable to occupy multiple resources. This will result in fewer false wake-ups of UEs, thus saving more power. In this regard, before the RAN1#97 meeting, the 3GPP Radio Access Network Working Group 1 (RAN WG1) reached the following agreement:

[0024] LTE-MTC

[0025] protocol

[0026] Based on the evaluation results including power saving gain, resource usage, etc., select one of the following options downward until RAN1#97.

[0027] - Up to 2 orthogonal WUS resources can be configured in the time domain

[0028] - Up to 2 orthogonal WUS resources can be configured in the frequency domain

[0029] - Up to 2 orthogonal WUS resources can be configured per dimension (up to 4 orthogonal WUS resources in total)

[0030] - Up to 2 orthogonal WUS resources can be configured in the time domain or frequency domain (only one of them can be configured)

[0031] Determine in RAN1#97 whether the legacy WUS resources are counted as one of the configured WUS resources.

[0032] NB-IoT

[0033] Protocol

[0034] For both legacy WUS and group WUS, up to 2 time-division multiplexed WUS resources can be configured. FFS whether group WUS resources can be shared with legacy WUS.

[0035] Protocol

[0036] The group WUS location related to the legacy WUS can be configured such that:

[0037] - If one group WUS resource is configured, the group WUS resource can be configured to occur simultaneously with the legacy WUS resource or just before the legacy WUS resource, and

[0038] - If two group WUS resources are configured, the first group WUS resource occurs simultaneously with the legacy WUS resource, while the second group WUS resource occurs just before the first group WUS resource.

[0039] Note that in this context, the label "FFS" means "for further study", i.e., the subject is intended for subsequent processes in the standardization process.

[0040] In addition to the above, it has been shown that many groups are important for achieving a low false wake-up rate and thus good UE energy efficiency.

[0041] The existing Rel-15 WUS implementation uses only one resource to send WUS. Therefore, it is not affected by the problems presented in this disclosure, but the single resource results in an unnecessarily high false wake-up rate due to the UE incorrectly detecting the WUS while they themselves are not paged. This is mitigated in Rel-16, where WUS can be allocated to multiple resources, i.e., multiplexed in time, or frequency, or both.

[0042] For Rel-16, previous alternatives either used a set of UE group codes that provide unique codes for all UE groups regardless of which resource the UE group belongs to, or used the same set of UE group codes or UE group sequences for all resources, i.e., reusing these codes on different resources. Generally, more codes or sequences allow for more UE groups, which in turn allows for better UE power characteristics. However, code or sequence designs that allow many codes typically do not provide as good cross-correlation characteristics as code designs that allow fewer codes. In addition, simultaneously transmitting the same signal at multiple frequency positions results in an increase in the peak-to-average power ratio (PAPR) of the transmitted signal, and thus compression in the analog transmitter path can cause non-linear interference. Another problem can be timing ambiguity, i.e., a device that has a timing error due to a long sleep may incorrectly detect its sequence at the wrong timing position. Therefore, a method for UE grouping is needed that allows for both good cross-correlation characteristics between groups sharing resources and differences between groups in different resources, such that PAPR and timing ambiguity can be avoided.

[0043] The above information disclosed in this background section is only for enhancing the understanding of the background of the present disclosure, and thus, it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0044] The present disclosure is based on the inventors' understanding that, although the complexity of the context increases, an appropriate way is needed to provide signals for low-complexity reception, i.e., low power consumption. The inventors also realized that it may be necessary to make the signal configuration for such transmissions more flexible, and a solution is given by providing information about the signal configuration.

[0045] According to a first aspect, there is provided a method for a network node configured for wireless communication with a wireless communication device. The method is for sending a signal to the wireless communication device and includes: receiving a paging message from another network node, the paging message being intended for wireless devices belonging to a first wireless device group; determining a signal resource allocation and the group of the wireless device from the received paging message; determining a signal sequence based on the signal resource allocation and the group of the wireless device; and using the determined signal resource allocation to send a signal including the determined signal sequence.

[0046] The signal sequence may include an element-wise multiplication of a resource sequence and a group sequence. The resource sequence may be a Zadoff-Chu sequence that is element-wise multiplied by a scrambling sequence, where the initialization of the scrambling sequence is determined based on the allocated resources.

[0047] The received paging message includes any one of a device identifier, service information, and a paging rate.

[0048] The transmitted signal may include a wake-up signal.

[0049] According to a second aspect, there is provided a method for a network node configured for wireless communication with a wireless communication device. The method is for providing a signal configuration to the wireless communication device and includes: determining a first resource allocation and a second resource allocation to be used for the signal configuration, where the first resource allocation and the second resource allocation are different and adjacent in time and / or frequency; determining a first group of wireless communication devices and a second group of wireless communication devices, where 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; and wirelessly transmitting information about the signal configuration to the first group of wireless devices and the second group of wireless devices as a system information message.

[0050] Wirelessly transmitting the system information message may include: transmitting a broadcast message, or transmitting a dedicated radio resource control message.

[0051] The first resource allocation and the second resource allocation may include: two resource allocations that are adjacent in time on the same frequency; two resource allocations that are adjacent in frequency at the same time; or two resource allocations that are adjacent in time and frequency.

[0052] Determining the first resource allocation and the second resource allocation may include receiving information about the allocation from another network node.

[0053] Determining the first resource allocation and the second resource allocation may include retrieving information about the allocation from a storage device.

[0054] The method may include: determining the number of groups to be used, where wirelessly transmitting information about the signal configuration includes information about the number of groups. Determining the number of groups to be used may include receiving information about the number of groups to be used from another network node. Alternatively, determining the number of groups to be used may include retrieving information about the number of groups to be used from a storage device. The information about the number of groups may represent any one of the following: the number of groups per resource allocation; and the number of groups for all resource allocations.

[0055] The signal configuration may include a resource sequence for corresponding resource allocation, and wirelessly sending information about the signal configuration to a first group of wireless devices and a second group of wireless devices as a system information message further includes an indication of the resource sequence used.

[0056] The signal configuration may include a resource sequence that is a Zadoff-Chu sequence element-wise multiplied by a scrambling sequence, wherein the initialization of the scrambling sequence is determined based on a first resource allocation and a second resource allocation, respectively.

[0057] The signal configuration may be a signal configuration for a wake-up signal.

[0058] Sending a signal to a wireless communication device in the method of the first aspect may use the signal configuration transmitted according to the method of the second aspect.

[0059] According to a third aspect, there is provided a computer program comprising instructions which, when executed on a processor of a network node, cause the network node to perform the method according to either the first or the second aspect.

[0060] According to a fourth aspect, there is provided a method for a wireless device. The method is for receiving a signal from a network node and includes: wirelessly receiving information about a signal configuration in a system information message; determining a resource allocation and a group to which the wireless device belongs based on the information about the signal configuration; determining a signal sequence to be concerned about based on the resource allocation and the group; wirelessly receiving available signals; and detecting the signal in the received signals by identifying the signal sequence at the determined resource allocation.

[0061] The sequence to be concerned about may include an element-wise multiplication of a resource sequence and a group sequence. The group sequence may be an element-wise phase shift based on the group. The resource sequence may be a Zadoff-Chu sequence element-wise multiplied by a scrambling sequence, wherein the initialization of the scrambling sequence is determined based on the resource allocation.

[0062] The received signal may include a wake-up signal.

[0063] The information about the signal configuration may include information about the number of groups used. The information about the number of groups used represents any one of the following: the number of groups per resource allocation; and the number of groups for all resource allocations.

[0064] Wirelessly receiving information about the signal configuration in a system information message may include: receiving a broadcast message, or receiving a dedicated radio resource control message.

[0065] Information about signal configuration may include a resource sequence for corresponding resource allocation, and wirelessly receiving information about signal configuration in a system information message may include receiving an indication of the resource sequence used.

[0066] According to a fifth aspect, there is provided a computer program comprising instructions which, when executed on a processor of a wireless communication device, cause the wireless communication device to perform the method according to the fourth aspect.

[0067] According to a sixth aspect, there is provided a network node configured for wireless communication with a wireless communication device, the network node comprising circuitry configured to perform the method according to any one of the first and second aspects.

[0068] According to a seventh aspect, there is provided a wireless communication device comprising circuitry configured to perform the method according to the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] With reference to the accompanying drawings, the above and other objects, features and advantages of the present disclosure will be better understood from the following illustrative and non - limiting detailed description of preferred embodiments of the present disclosure.

[0070] Figure 1 Schematically shows possible WUS and PO positions and actual WUS and PO positions.

[0071] Figure 2 Is a flowchart showing a method for a network node according to an embodiment.

[0072] Figure 3 Is a flowchart showing a method for a wireless communication device according to an embodiment.

[0073] Figure 4 Shows an example of time - multiplexing of time - frequency resources.

[0074] Figure 5 Shows an example of frequency - multiplexing of time - frequency resources.

[0075] Figure 6 Shows an example of multiplexing of time - frequency resources in both time and frequency.

[0076] Figure 7 Is a flowchart showing a method for a network node according to an embodiment.

[0077] Figure 8 Is a flowchart showing a method for a network node according to an embodiment.

[0078] Figure 9 Is a block diagram schematically showing a network node according to an embodiment.

[0079] Figure 10 Schematically shows a computer-readable medium and a processing device.

[0080] Figure 11 Is a flowchart showing a method for a wireless communication device according to an embodiment.

[0081] Figure 12 Is a flowchart showing a method for a wireless communication device according to an embodiment.

[0082] Figure 13 Is a block diagram schematically showing a wireless communication device according to an embodiment.

[0083] Figure 14 Schematically shows a computer-readable medium and a processing device.

[0084] Figure 15 Shows a wireless network including a network node and a wireless communication device. Detailed Description

[0085] The present disclosure relates to signal configuration transmission and signal transmission. This applies to both network nodes and wireless communication devices. The signal can be, for example, a WUS for an LTE-MTC or NB-IoT context, but the method can be applied to other types of signals and / or contexts. Figure 2 Is a flowchart schematically showing the operation of a network node, where the network node sends 200 signal configurations to an associated wireless device. The wireless device can be associated with the network node by being served by a cell served by the network node or by residing on a cell served by the network node. When the signal is sent 202 to the addressed wireless device, the wireless device knows the signal configuration and will be able to detect the signal. Similarly, Figure 3 Is a flowchart schematically showing the operation of a wireless communication device. The wireless communication device receives 300 information about the signal configuration. Furthermore, the wireless communication device can correctly receive 302 the signal.

[0086] In terms of network configuration, the network node sends configuration information to devices associated with the network node so that these wireless devices can receive signals according to the configuration. Therefore, the present disclosure provides a method for a network node to send a signal configuration message to a device associated with the network node, where the signal can be sent in different adjacent time-frequency resources, and where the resources depend on the characteristics of the device, such as belonging to a certain group, etc.

[0087] The time-frequency resources can be time-division multiplexed, as Figure 4 shown in Figure 5 or can be frequency-division multiplexed, asFigure 6 as shown in

[0088] In this document, the term "adjacent" shall be interpreted in the context below: compared to the frequency band in which a cellular receiver typically operates (e.g., 20 MHz or wider), the receiver of the received signal is expected to operate in a narrow band (e.g., 1.4 MHz or narrower), and the receiver of the received signal shall be turned on for only a short time, both for energy saving. Thus, "adjacent" shall be interpreted within such limits, but not necessarily in consecutive time and / or frequency PRBs.

[0089] Figure 7 is a flowchart schematically showing the transmission of a signal configuration (Cf.) to be performed by a network node ( Figure 2 , block 200). The signal configuration includes different resource allocations. The network node determines 702 the resource allocation based on a determined set of resources to be used for transmitting a signal (i.e., WUS). The resource allocation can be for two or more wireless devices or groups of wireless devices, for the purpose of, for example, not unnecessarily waking up the wireless devices. The resource allocation can be, for example, any of those shown in reference Figures 4 to 6 . In one case, the network node determines the signal configuration by reading a file from a storage device, while in another case, the network node determines the configuration by receiving configuration information (by signaling from a network node (e.g., from a core network node)).

[0090] For the case where it is feasible for more than two groups of wireless devices, such as the possible resource allocations shown by Figure 6 , the network node can determine 701 the number of groups to be addressed by the resource allocation. It should be noted here that multiple groups can share a resource, but for the benefit of the methods provided in this disclosure, the case where at least some different groups are assigned different resources is mainly considered. The indication of the number of groups can represent the number of groups per resource allocation, or the number of groups for all resource allocations. Based on the information collected, the group-to-allocation relation is determined 704. That is, the groups have an association with the signal configuration through their resource allocations. Information about the group-to-allocation relation is sent 706 from the network node via a system information (SI) message, such as a broadcast message or a dedicated radio resource control (RRC) message.

[0091] The signal configuration may include a resource sequence for corresponding resource allocation. Information about the signal configuration may include an indication of the resource sequence used. For example, a first resource allocation is associated with a first resource sequence and a 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 a phase shift, e.g., + / -π / 2, π, etc. The phase shift may be at the symbol level, or for a larger portion of the symbol sequence, or for the entire sequence. For example, the phase-shifted version of the first resource sequence may include the inverted version of the first resource sequence, i.e., each symbol of the second resource sequence is phase-shifted by π with respect 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 by one or more steps with respect to the first resource sequence. In this case, the information about the signal configuration may indicate the shift.

[0092] Another example is that the resource sequence is a Zadoff-Chu sequence multiplied element-wise by a scrambling code, where a first resource allocation is associated with a first resource sequence having a first index of the Zadoff-Chu sequence and a second resource allocation is associated with a second resource sequence having a second index of the Zadoff-Chu sequence. The index may be included in the indication of the resource sequence used. In another example, the resource sequence is a Zadoff-Chu sequence multiplied element-wise by a scrambling sequence, where the initialization of the scrambling sequence is determined based on the first resource allocation and the second resource allocation, respectively.

[0093] Yet another example is that the second resource sequence includes an element-to-resource element mapping permutation of the first resource sequence. For example, the mapping permutation may include that the symbols are cyclically shifted, or are reordered in frequency and / or time, e.g., in the reverse order.

[0094] When the resource allocation is by frequency, the mutual rearrangement of the sequences may provide a PAPR constraint.

[0095] Figure 8 is a flowchart schematically showing the transmission (Cf.) of a signal to a wireless device to be performed by a network node ( Figure 2 , block 202). The signal may be, for example, a WUS. The transmission will be performed according to a signal configuration associated with the resource allocation for the corresponding group.

[0096] A network node receives a paging message 800 from another network node (e.g., a core network node), which is intended for wireless devices belonging to a first group of wireless devices. Based on the received paging message, a signal resource allocation 802 and a group of wireless devices are determined. The resource allocation can be retrieved from the network node or determined from a memory storage. Thus, the network node can determine a signal sequence 804 based on the signal resource allocation and the group of wireless devices. Assuming that the addressed wireless device is observing signals and their characteristics in the allocated resources through a signal configuration of previous signaling as shown in reference Figure 7 . Further, the network node uses the determined signal resource allocation to send a signal 806 including the determined signal sequence. For the case where the signal is a WUS, the wireless device starts monitoring the paging channel after correctly receiving the signal, where the wireless device can receive the paging message sent on its PO.

[0097] The received paging message can include, for example, device identification, service information, paging rate, subscriber identity module (SIM) information, classification (such as UL overload or DL overload), etc.

[0098] Determining the signal sequence 804 can include an element - by - element multiplication of a resource sequence and a group sequence, which can be according to any of the examples shown above. The group sequence can be an element - by - element rearrangement based on the group, e.g., a phase shift. The group sequence can be a group - based Gold scrambling code. Alternatively, the group sequence can be a group - based time - frequency short orthogonal code.

[0099] Alternatively, the signal sequence can be determined 804 to be a resource sequence that may be scrambled with a scrambling code such as a Gold scrambling code.

[0100] Further, the signal is sent 806.

[0101] According to one example, the signal to be sent 806 is a resource sequence that is element - by - element multiplied by a UE group sequence. In one case, the resource sequence is a Zadoff - Chu sequence that is element - by - element multiplied by a scrambling sequence. In this case, the Zadoff - Chu sequence can be related to a cell identity (ID) or a part of the cell ID in the same or a similar way as described in Section 6.11B of 3GPP specification 36.211 and also included in the definition of MWUS above, where the cell ID is used to determine the sequence index u. Similarly, in the same or a similar way as in the definition of MWUS, the scrambling sequence can be related to relevant timing information (e.g., the timing position of a subsequent PO), where n f_start_PO and n s_start_PO in the formula for the variable c init_WUSis used in the expression, and this variable parameterizes the initialization of the scrambling sequence. As explained in clause 7.2 of reference 36.211, the initialization variable of a pseudo-random sequence such as a scrambling sequence in 3GPP can generally be an integer c init denoted by this integer, which is related to the initialization bit string x via the expression 2 where the bit string x 2 describes the initial state for scrambling sequence generation. Therefore, at least some bits in the initialization bit string x 2 can be related to timing positions. For example, just like the different values of n f_start_PO and n s_start_PO used in the existing MWUS definition. In one case, the initialization of the scrambling sequence can also be related to the resource in which the signal will be transmitted, such that one or more bits are determined by the signal resource. Additionally, in one case, the UE group sequence is an element-wise 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, whose initialization is determined by the UE group, as described in section 4 of 3GPP contribution R1-1907569. In yet another case, the UE group sequence is a time-frequency short orthogonal cover code determined by the UE group, as described in section 3 of 3GPP contribution R1-1906772.

[0102] Figure 9 is a block diagram schematically showing a network node 900 according to an embodiment. The network node 900 includes an antenna arrangement 902, a receiver 904 connected to the antenna arrangement 902, a transmitter 906 connected to the antenna arrangement 902, a processing unit 908 that can include one or more circuits, one or more input interfaces 910, and one or more output interfaces 912. The interfaces 910, 912 can be operator interfaces and / or signal interfaces, for example, electrical or optical interfaces. The network node 900 is configured to operate in a cellular communication network. In particular, by setting the processing unit 908 to execute the embodiment shown in reference Figures 1 to 8 , the network node 900 is capable of providing signal configuration and / or providing signals, such as WUS. The processing unit 908 can also perform a variety of tasks, ranging from signal processing to enabling reception and transmission (since it is connected to the receiver 904 and the transmitter 906), executing applications, controlling the interfaces 910, 912, etc.

[0103] The method according to the present disclosure is suitable for implementation with the aid of a processing component such as a computer and / or a processor, in particular in the case where the processing unit 908 as shown above comprises a processor that processes the signal configuration and / or the provision of signals as shown above. Accordingly, a computer program comprising instructions is provided, the instructions being arranged to cause the processing component, the processor or the computer to execute the steps of any method of any of the embodiments described with reference to Figures 1 to 8 Any one of the embodiments described. The computer program preferably comprises program code stored on a computer-readable medium 1000 as shown in Figure 10 , which program code can be loaded by the processing component, the processor or the computer 1002 and executed by the processing component, the processor or the computer 1002 to cause the same to execute the method according to an embodiment of the present disclosure, preferably any one of the embodiments described with reference to Figures 1 to 8 . The computer 1002 and the computer program product 1000 may be arranged to execute the program code sequentially, where the actions of any one of these methods are executed step by step, or, where appropriate, in real time. The processing component, the processor or the computer 1002 is preferably generally referred to as an embedded system. Accordingly, Figure 10 The computer-readable medium 1000 and the computer 1002 depicted in should be construed as illustrative only to provide an understanding of the principles and should not be construed as any direct illustration of the elements.

[0104] Figure 11 is a flowchart showing a method of retrieving information about a signal to be detected by a wireless communication device. The wireless communication device receives 1100 information about a signal configuration for a signal to be detected. The signal configuration is received 1100 in a system information message that is sent to a plurality of groups of wireless devices having different resource allocations from each other. The wireless communication device determines 1102 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.

[0105] The first resource allocation and a second resource allocation targeted at other wireless devices may be two resource allocations adjacent in time or two resource allocations adjacent in frequency. Resource allocation may be performed simultaneously in time and frequency. Accordingly, there may be more than two resource allocations, as shown in reference to Figure 6 .

[0106] The wireless communication device may belong to the first group, and the wireless transmission of information about the signal configuration may include information about the number of groups used. The information about the number of groups may be represented by the number of groups per resource allocation or by the number of groups for all resource allocations.

[0107] The signal configuration may include a resource sequence for corresponding resource allocation, and information regarding the signal configuration may be received in a system information message, including an indication of the resource sequence used. As discussed above, the resource sequence may be a Zadoff-Chu sequence multiplied element-wise by a scrambling code or a scrambling sequence, where the index is included in the indication of the resource sequence used. For example, the initialization of the scrambling sequence may also be based on the resource where the signal will be transmitted, such that one or more bits are determined by the signal resource.

[0108] Other examples as described above include that the indication of the resource sequence used includes information about any of the following: the phase shift of the resource sequence, the element shift of the resource sequence, and the element-to-resource element mapping permutation of the resource sequence.

[0109] Figure 12 is a flowchart schematically showing a method for a wireless communication device to detect a received signal. The wireless communication device determines 1200 the signal configuration. The signal configuration may be inherently known or may be retrieved as shown in reference Figure 11 shown. Determine 1202 the resource allocation for the signal. It may also be determined which group the wireless communication device belongs to. Based on the signal sequence determined based on the resource allocation and the group, determine 1204 the signal sequence to be concerned about. When the wireless communication device receives 1206 any available signal, detect 1208 the signal in the received signal 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., by correlation), the wireless communication device will be able to perform the detection 1208 in an energy-efficient manner.

[0110] Thus, the signal configuration provides the wireless communication device with the ability to perform energy-efficient detection through knowledge of the resources to look for and the sequences to look for. Determining 1204 the sequence to be concerned about may include: forming a sequence based on the resource sequence and the group sequence, for example, by multiplying the resource sequence and the group sequence element-wise. As discussed above, the resource sequence may be a Zadoff-Chu sequence multiplied element-wise by a scrambling code such as a Gold scrambling code or other scrambling sequences, where the index of the Zadoff-Chu sequence is based on the allocated resource and / or is indicated in the received signal configuration. The initialization of the scrambling sequence may also be related to the resource where the signal will be transmitted, such that one or more bits are determined by the signal resource. One or more bits may be determined by the signal resource. Initialization may refer to c mentioned above initAn initialization string is represented. Also as discussed above, the signal configuration may include information about the resource sequence for the corresponding resource allocation, and the differences between the resource sequences for different wireless communication devices or groups of wireless communication devices may include any of the following: phase shift of the resource sequence, element shift of the resource sequence, and element-to-resource element mapping permutation of the resource sequence.

[0111] The group sequence may be, for example, a group-based element-by-element phase shift, a group-based Gold scrambling code, or a group-based time-frequency short orthogonal code.

[0112] The received signal may include a wake-up signal that causes the wireless communication device to listen for a paging message at the next PO, but the method may also be used for other purposes where very little information is required in the DL. As an example, the purpose may be to trigger an IoT device to provide measurements or take a predefined action, such as closing / opening a valve or switch.

[0113] Figure 13 is a block diagram schematically showing a wireless communication device such as UE 1300 according to an embodiment. The UE includes an antenna arrangement 1302, a receiver 1304 connected to the antenna arrangement 1302, a transmitter 1306 connected to the antenna arrangement 1302, a processing unit 1308 that may include one or more circuits, one or more input interfaces 1310, and one or more output interfaces 1312. The interfaces 1310, 1312 may be user interfaces and / or signal interfaces, for example, electrical or optical interfaces. UE1300 is configured to operate in a cellular communication network. In particular, by setting the processing unit 1308 to execute the reference Figures 1 to 6 shown in the embodiment, UE 1300 is capable of receiving signal configurations and / or detecting signals, such as WUS. The processing unit 1308 may also perform a variety of tasks, ranging from signal processing to enabling reception and transmission (since it is connected to the receiver 1304 and transmitter 1306), executing applications, controlling the interfaces 1310, 1312, etc.

[0114] The method according to the present disclosure is suitable for implementation with the help of a processing component such as a computer and / or a processor, particularly in the case where the processing unit 1308 as shown above includes a processor that processes signal configurations and / or detects signals (such as WUS). Accordingly, a computer program including instructions is provided, the instructions being configured to cause the processing component, processor, or computer to execute the steps of any method of any embodiment described with reference to Figures 1 to 6 The computer program preferably includes, for example, Figure 14Program code stored on the computer-readable medium 1400 as shown, which can be loaded by the processing component, processor, or computer 1402 and executed by the processing component, processor, or computer 1402 to cause it to execute the method according to an embodiment of the present disclosure respectively. Preferably, reference is made to Figures 1 to 6 Any one of the embodiments described. The computer 1402 and the computer program product 1400 can be set to execute the program code sequentially, wherein the actions of any one of these methods are executed step by step. The processing component, processor, or computer 1402 is preferably generally referred to as an embedded system. Therefore, Figure 14 The computer-readable medium 1000 and the computer 1402 depicted in

[0115] Figure 15 A wireless network according to an embodiment is shown, including network (NW) nodes 1500 and 1500a and a wireless device 1510, with a more detailed view of the network node 1500 and the communication device 1510. For simplicity, Figure 15 Only the core network 1520, the network nodes 1500 and 1500a, and the communication device 1510 are depicted. The network node 1500 includes a processor 1502, a storage device 1503, an interface 1501, and an antenna 1501a. Similarly, the communication device 1510 includes a processor 1512, a storage device 1513, an interface 1511, and an antenna 1511a. These components can work together to provide the functions of the network node and / or the wireless device as shown above. In different embodiments, the wireless network can include any number of wired or wireless networks, network nodes, base stations, controllers, wireless devices, relay stations, and / or any other components that can facilitate or participate in the communication of data and / or signals via wired or wireless connections.

[0116] The network 1520 can include one or more IP networks, a public switched telephone network (PSTN), a packet data network, an optical network, a wide area network (WAN), a local area network (LAN), a wireless local area network (WLAN), a wired network, a wireless network, a metropolitan area network, and other networks that enable communication between devices. The network 1520 can include network nodes for executing the method shown in reference to Figure 8 And / or an interface for signaling between the network nodes 1500 and 1500a.

[0117] The network node 1500 includes a processor 1502, a storage device 1503, an interface 1501, and an antenna 1501a. These components are depicted as single boxes located within a single larger box. However, in practice, a network node can include multiple different physical components that make up a single shown component (e.g., the interface 1501 can include terminals for coupled lines for wired connections and radio transceivers for wireless connections). Similarly, the network node 1500 can be composed of multiple physically separated components (e.g., a NodeB component and an RNC component, a BTS component and a BSC component, etc.), each of which can have their own respective processors, storage devices, and interface components. In certain scenarios where the network node 1500 includes multiple separated components (e.g., a BTS and a BSC component), one or more of the separated components can be shared among several network nodes. For example, a single RNC can control multiple NodeBs. In this case, each unique NodeB and BSC pair can be a separate network node. In some embodiments, the network node 1500 can be configured to support multiple radio access technologies (RATs). In such embodiments, some components can be replicated (e.g., separate storage devices 1503 for different RATs) and some components can be reused (e.g., the same antenna 1501 can be shared by the RATs).

[0118] The processor 1502 can be a microprocessor, a controller, a microcontroller, a central processing unit, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or any other suitable computing device, resource, or combination of one or more of hardware, software, and / or coded logic, which are operable to provide the functionality of the network node 1500 either alone or in combination with other components of the network node 1500 such as the storage device 1503. For example, the processor 1502 can execute instructions stored in the storage device 1503. Such functionality can include providing various wireless features discussed herein to wireless devices such as the wireless device 1510, including any features or benefits disclosed herein.

[0119] The storage device 1503 can include any form of volatile or non-volatile computer-readable memory, including but not limited to persistent storage devices, 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 storage device 1503 can store any suitable instructions, data, or information used by the network node 1500, including software and coded logic. The storage device 1503 can be used to store any calculations performed by the processor 1502 and / or any data received via the interface 1501.

[0120] The network node 1500 also includes an interface 1501, which can be used in the wired or wireless communication of signaling and / or data between the network node 1500, the network 1520, and / or the wireless device 1510. For example, the interface 1501 can perform any formatting, encoding, or translation that may be required to allow the network node 1500 to send and receive data from the network 1520 via a wired connection. The interface 1501 can also include a radio transmitter and / or receiver that can be coupled to or be part of the antenna 1501a. The radio can receive digital data to be transmitted via a wireless connection to other network nodes or wireless devices. The radio can convert the digital data into a radio signal with appropriate channel and bandwidth parameters. Further, the radio signal can be transmitted via the antenna 1501a to an appropriate recipient (e.g., the wireless device 1510).

[0121] The antenna 1501a can be any type of antenna capable of wirelessly sending and receiving data and / or signals. In some embodiments, the antenna 1501a can include one or more omnidirectional, sector, or panel antennas, which are operable to send / receive radio signals, for example, between 2 GHz and 66 GHz. Omnidirectional antennas can be used to send / receive radio signals in any direction, sector antennas can be used to send / receive radio signals from devices within a specific area, and panel antennas can be line-of-sight antennas used to send / receive radio signals in a relatively straight line manner. The antenna 1501a can include one or more elements for enabling different ranks of SIMO, MISO, or MIMO operations.

[0122] The wireless device 1510 can be any type of communication device, wireless device, UE, D2D device, or ProSe UE, but generally can be any device, sensor, smart phone, modem, laptop computer, personal digital assistant (PDA), tablet computer, mobile device terminal, smart phone, laptop embedded device (LEE), laptop mounted device (LME), universal serial bus (USB) dongle, machine type UE, UE with machine-to-machine (M2M) communication capabilities, etc., which are capable of wirelessly sending and receiving data and / or signals to and from network nodes such as network node 1500 and / or other wireless devices. In particular, the wireless device 1510 is capable of communicating, for example, in the MTC and / or NB-IoT context as shown above. The wireless device 1510 includes a processor 1512, a storage device 1513, an interface 1511, and an antenna 1511a. Similar to network node 1500, the components of wireless device 1510 are depicted as a single box located within a single larger box. However, in practice, a wireless device can include multiple different physical components that make up a single shown component (e.g., storage device 1513 can include multiple discrete microchips, each representing a portion of the total storage capacity).

[0123] The processor 1512 can be a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application specific integrated circuit, field programmable gate array, or a combination of one or more of any other suitable computing device, resource, or combination of hardware, software, and / or coded logic, which are operable to provide the functionality of wireless device 1500 either alone or in combination with other components of wireless device 1510 such as storage device 1513. Such functionality can include providing the various wireless features discussed herein, including any features or benefits disclosed herein.

[0124] The storage device 1513 can include any form of volatile or non-volatile memory, including but not limited to persistent storage devices, solid state memories, remotely mounted memories, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), removable media, or any other suitable local or remote memory component. The storage device 1513 can store any suitable instructions, data, or information used by the wireless device 1510, including software and coded logic. The storage device 1513 can be used to store any calculations performed by the processor 1512 and / or any data received via the interface 1511.

[0125] Interface 1511 can be used in the wireless communication of signaling and / or data between wireless device 1510 and network nodes 1500, 1500a. For example, interface 1511 can perform any formatting, encoding, or translation that may be required to allow wireless device 1510 to send and receive data to / from network nodes 1500, 1500a via a wireless connection. Interface 1511 can also include a radio transmitter and / or receiver that can be coupled to or be part of antenna 1511a. The radio can receive digital data to be sent via the wireless connection to, for example, network node 1501. The radio can convert the digital data into a radio signal with appropriate channel and bandwidth parameters. Further, the radio signal can be sent via antenna 1511a to, for example, network node 1500.

[0126] Antenna 1511a can be any type of antenna capable of wirelessly sending and receiving data and / or signals. In some embodiments, antenna 1511a can include one or more omnidirectional, sector, or planar antennas operable to send / receive radio signals between 2 GHz and 66 GHz. For simplicity, in terms of using wireless signals, antenna 1511a can be considered part of interface 1511. Antenna 1511a can include one or more elements for enabling SIMO, MISO, or MIMO operations of different ranks.

[0127] In some embodiments, the components described above can be used to implement one or more functional modules for enabling the measurements as shown above. These functional modules can include, for example, software run by a processor, computer programs, subroutines, libraries, source code, or any other form of executable instructions. Generally, each functional module can be implemented in hardware and / or software. Preferably, one or more or all of the functional modules can be implemented by processor 1512 and / or 1502 (possibly in cooperation with storage device 1513 and / or 1503). Processor 1512 and / or 1502 and storage device 1513 and / or 1503 can thus be arranged to allow processor 1512 and / or 1502 to retrieve instructions from storage device 1513 and / or 1503 and execute the retrieved instructions to allow the corresponding functional modules to perform any features or functions disclosed herein. These modules can also be configured to perform other functions or steps not explicitly described herein but within the knowledge of those skilled in the art.

[0128] Certain aspects of the inventive concept have been mainly described above with reference to several embodiments. However, as will be readily understood by those skilled in the art, embodiments other than those disclosed above are equally possible and within the scope of the inventive concept. Similarly, although several different combinations have been discussed, not all possible combinations have been disclosed. Those skilled in the art will understand that other combinations exist and are within the scope of the inventive concept. In addition, as will be understood by those skilled in the art, the embodiments disclosed herein are equally applicable to other standards and communication systems, and any feature from the specific figures disclosed may be combined with other features and applied to any other figure and / or combined with different features.

[0129] In addition to the above disclosure, the following items are given to provide further explanations, alternatives, and / or indications regarding possible viable combinations:

[0130] 1. A method for a network node configured for wireless communication with a wireless communication device, the method for sending a signal configuration to the wireless communication device and comprising:

[0131] Determining a first resource allocation and a second resource allocation to be used for the signal configuration, wherein the first resource allocation and the second resource allocation are different and adjacent in time and / or frequency;

[0132] Determining a first group of wireless communication devices 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;

[0133] Wirelessly sending information about the signal configuration to the first group of wireless devices and the second group of wireless devices as a system information message.

[0134] 2. The method according to item 1, wherein wirelessly sending the system information message comprises:

[0135] Sending a broadcast message, or

[0136] Sending a dedicated radio resource control message.

[0137] 3. The method according to item 1 or 2, wherein the first resource allocation and the second resource allocation comprise:

[0138] Two resource allocations that are adjacent in time on the same frequency;

[0139] Two resource allocations that are adjacent in frequency at the same time; or

[0140] Two resource allocations that are adjacent in time and frequency.

[0141] 4. The method according to any one of items 1 to 3, wherein determining the first resource allocation and the second resource allocation includes: receiving information about the allocation from another network node.

[0142] 5. The method according to any one of items 1 to 3, wherein determining the first resource allocation and the second resource allocation includes: retrieving information about the allocation from a storage device.

[0143] 6. The method according to any one of items 1 to 5, including: determining the number of groups to be used, wherein wirelessly transmitting information about the signal configuration includes information about the number of groups.

[0144] 7. The method according to item 6, wherein determining the number of groups to be used includes: receiving information about the number of groups to be used from another network node.

[0145] 8. The method according to item 6, wherein determining the number of groups to be used includes: retrieving information about the number of groups to be used from a storage device.

[0146] 9. The method according to any one of items 6 to 8, wherein the information about the number of groups represents any one of the following:

[0147] The number of groups per resource allocation; and

[0148] The number of groups for all resource allocations.

[0149] 10. The method according to any one of items 1 to 9, wherein the signal configuration includes a resource sequence for a corresponding resource allocation, and wirelessly transmitting information about the signal configuration to the first wireless device group and the second wireless device group as a system information message further includes an indication of the resource sequence used.

[0150] 11. The method according to 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, wherein the second resource sequence is a phase-shifted version of the first resource sequence.

[0151] 12. The method according to item 11, wherein the phase-shifted version of the first resource sequence includes an inverted version of the first resource sequence.

[0152] 13. The method according to 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, wherein the second resource sequence is an element-shifted version of the first resource sequence.

[0153] 14. The method according to item 10, wherein the resource sequence is a Zadoff-Chu sequence multiplied element-wise by a scrambling code, the first resource allocation is associated with a first resource sequence having a first initialization index of the Zadoff-Chu sequence and the second resource allocation is associated with a second resource sequence having a second initialization index of the Zadoff-Chu sequence, wherein the index is included in the indication of the resource sequence used.

[0154] 15. The method according to 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, wherein the second resource sequence includes a permutation of the elements of the first resource sequence to resource elements.

[0155] 16. A method of a network node configured for wireless communication with a wireless communication device, the method for sending a signal to the wireless communication device and comprising:

[0156] Receiving a paging message from another network node, the paging message being intended for a wireless device belonging to a first group of wireless devices;

[0157] Determining a signal resource allocation and the group of the wireless device from the received paging message;

[0158] Determining a signal sequence based on the signal resource allocation and the group of the wireless device; and

[0159] Sending a signal including the determined signal sequence using the determined signal resource allocation.

[0160] 17. The method according to item 16, wherein sending a signal to the wireless communication device uses a signal configuration transmitted by the method according to any one of items 1 to 15.

[0161] 18. The method according to item 16 or 17, wherein determining the signal sequence includes: multiplying a resource sequence element-wise by a group sequence.

[0162] 19. The method according to item 18, wherein the resource sequence is a Zadoff-Chu sequence multiplied element-wise by a scrambling code, wherein the initialization index of the Zadoff-Chu sequence is based on the allocated resources.

[0163] 20. The method according to item 18 or 19, wherein the group sequence is a group-based element-wise resource phase shift.

[0164] 21. The method according to item 18 or 19, wherein the group sequence is a group-based Gold scrambling code.

[0165] 22. The method according to item 18 or 19, wherein the group sequence is based on a time-frequency short orthogonal code of the group.

[0166] 23. The method according to any one of items 16 to 22, wherein the received paging message includes any one of the following:

[0167] Device identifier;

[0168] Service information; and

[0169] Paging rate.

[0170] 24. The method according to any one of items 16 to 23, wherein the transmitted signal includes a wake-up signal.

[0171] 25. A computer program comprising instructions that, when executed on a processor of a network node, cause the network node to perform the method according to any one of items 1 to 24.

[0172] 26. A method for a wireless communication device, the method for receiving a signal configuration from a network node and comprising:

[0173] Wirelessly receiving information about the signal configuration in a system information message, the system information message being sent to multiple groups of wireless devices having different resource allocations from each other; and

[0174] Determining a first resource allocation for the wireless communication device from the received signal configuration.

[0175] 27. The method according to item 26, wherein wirelessly receiving the system information message includes:

[0176] Receiving a broadcast message, or

[0177] Receiving a dedicated radio resource control message.

[0178] 28. The method according to item 26 or 27, wherein the first resource allocation and the second resource allocation for other wireless devices include:

[0179] Two resource allocations adjacent in time and on the same frequency;

[0180] Two resource allocations adjacent in frequency and at the same time; or

[0181] Two resource allocations adjacent in time and frequency.

[0182] 29. The method according to any one of items 26 to 28, wherein the wireless communication device belongs to a first group, and wirelessly transmitting information about signal configuration includes information about the number of groups used.

[0183] 30. The method according to item 29, wherein the information about the number of groups represents any one of the following:

[0184] The number of groups per resource allocation; and

[0185] The number of groups for all resource allocations.

[0186] 31. The method according to any one of items 26 to 30, wherein the signal configuration includes a resource sequence for a corresponding resource allocation, and wirelessly receiving information about the signal configuration in a system information message includes: receiving an indication of the resource sequence used.

[0187] 32. The method according to item 31, wherein the resource sequence is a Zadoff-Chu sequence multiplied element-wise by a scrambling code, and the initialization index of the Zadoff-Chu sequence is included in the indication of the resource sequence used.

[0188] 33. The method according to item 32, wherein the indication of the resource sequence used includes information about any one of the following:

[0189] The phase shift of the resource sequence;

[0190] The element shift of the resource sequence; and

[0191] The element-to-resource element mapping permutation of the resource sequence.

[0192] 34. A method for a wireless device, the method for receiving a signal from a network node and including:

[0193] Determine the signal configuration;

[0194] Determine resource allocation and groups from the network configuration;

[0195] Based on the resource allocation and the groups, determine the signal sequence to be concerned about;

[0196] Wirelessly receive available signals; and

[0197] Detect the signal in the received signals by identifying the signal sequence at the determined resource allocation.

[0198] 35. The method according to item 34, wherein determining the network configuration includes receiving the network configuration according to the method according to any one of items 26 to 33.

[0199] 36. According to the method of item 34 or 35, wherein determining the sequence to be concerned about includes: multiplying the resource sequence and the group sequence element by element.

[0200] 37. According to the method of item 36, wherein the resource sequence is a Zadoff-Chu sequence multiplied element by element by a scrambling code, and the initialization index of the Zadoff-Chu sequence is based on the allocated resources.

[0201] 38. According to the method of item 36, wherein the signal configuration includes a resource sequence for corresponding resource allocation, and the difference between resource sequences includes any of the following:

[0202] Phase shift of the resource sequence;

[0203] Element shift of the resource sequence; and

[0204] Element-to-resource element mapping permutation of the resource sequence.

[0205] 39. According to the method of any one of items 36 to 38, wherein the group sequence is an element-by-element resource phase shift based on the group.

[0206] 40. According to the method of any one of items 36 to 38, wherein the group sequence is a Gold scrambling code based on the group.

[0207] 41. According to 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.

[0208] 42. According to the method of any one of items 34 to 41, wherein the received signal includes a wake-up signal.

[0209] 43. A computer program, comprising instructions that, when executed on a processor of a wireless communication device, cause the wireless communication device to perform the method of any one of items 26 to 42.

[0210] 44. A network node, configured for wireless communication with a wireless communication device, comprising circuitry configured to perform the method of any one of items 1 to 24.

[0211] 45. A wireless communication device, comprising circuitry configured to perform the method of any one of items 26 to 42.

Claims

1. A method for a network node configured for wireless communication with a wireless communication device, the method for sending a signal to the wireless communication device and comprising: determining a first resource allocation and a second resource allocation to be used for signal configuration, wherein the first resource allocation and the second resource allocation are different and adjacent in time and / or frequency; determining a first group of wireless communication devices and a second group of wireless communication devices, wherein the first resource allocation is allocated to the first group of wireless communication devices and the second resource allocation is allocated to the second group of wireless communication devices; before receiving a paging message from another network node, providing the signal configuration to the wireless communication device by: wirelessly sending information about the signal configuration to the first group of wireless communication devices and the second group of wireless communication devices as a system information message; receiving from the another network node the paging message destined for the wireless communication device; determining from the received paging message a signal resource allocation and the group of wireless communication devices to which the wireless communication device belongs; determining a signal sequence based on the determined signal resource allocation and the determined group of wireless communication devices; and using the determined signal resource allocation to send the signal including the determined signal sequence, wherein the signal sequence includes an element-wise multiplication of a resource sequence and a group sequence.

2. The method according to claim 1, wherein, the resource sequence is a Zadoff-Chu sequence element-wise multiplied by a scrambling sequence, wherein the initialization of the scrambling sequence is determined based on the allocated resources.

3. The method according to claim 1 or 2, wherein, the group sequence is an element-wise phase shift based on the group.

4. The method according to claim 1 or 2, wherein, the received paging message includes any one of the following: device identifier; service information; and paging rate.

5. The method according to claim 1 or 2, wherein, the signal sent includes a wake-up signal.

6. The method according to claim 1, wherein, wirelessly sending the system information message includes: sending a broadcast message, or sending a dedicated radio resource control message.

7. The method according to claim 1, wherein, the first resource allocation and the second resource allocation include: two resource allocations adjacent in time and on the same frequency; two resource allocations adjacent in frequency and at the same time; or two resource allocations adjacent in time and frequency.

8. The method according to claim 1, wherein, determining the first resource allocation and the second resource allocation includes: receiving information about the allocation from another network node.

9. The method according to claim 1, wherein, determining the first resource allocation and the second resource allocation includes: retrieving information about the allocation from a storage device.

10. The method according to claim 1, comprising: determining the number of groups to be used, wherein wirelessly sending the information about the signal configuration includes information about the number of groups.

11. The method according to claim 10, wherein, determining the number of groups to be used includes: receiving information about the number of the groups to be used from another network node.

12. The method according to claim 10, wherein, determining the number of groups to be used includes: retrieving information about the number of groups to be used from a storage device.

13. The method according to any one of claims 10 to 12, wherein, the information about the number of groups represents any one of the following: the number of groups per resource allocation; and the number of groups for all resource allocations.

14. A computer-readable medium having program code stored thereon, the program code when executed on a processor of a network node causes the network node to perform the method according to any one of claims 1 to 13.

15. A method for a wireless device, the method for receiving a signal from a network node and including: wirelessly receiving information about signal configuration in a system information message, the system information message being sent by the network node before the network node receives a paging message from another network node; determining a resource allocation and a wireless device group to which the wireless device belongs based on the information about the signal configuration, wherein the resource allocation is different and adjacent in time and / or frequency from another resource allocation assigned to another wireless device group; determining a signal sequence to be concerned about based on the determined resource allocation and the determined wireless device group; wirelessly receiving available signals; and detecting the signal in the received signals by identifying the signal sequence at the determined resource allocation, wherein the sequence to be concerned about includes an element-wise multiplication of a resource sequence and a group sequence.

16. The method according to claim 15, wherein, the group sequence is based on an element-wise phase shift of the group.

17. The method according to claim 15 or 16, wherein, the resource sequence is a Zadoff-Chu sequence multiplied element-wise by a scrambling sequence, wherein the initialization of the scrambling sequence is determined based on the resource allocation.

18. The method according to claim 15 or 16, wherein, the received signal includes a wake-up signal.

19. The method according to claim 15 or 16, wherein, the information about the signal configuration includes information about the number of groups used.

20. The method according to claim 19, wherein, the information about the number of groups used represents any one of the following: the number of groups per resource allocation; and the number of groups for all resource allocations.

21. The method according to claim 15 or 16, wherein, wirelessly receiving the information about the signal configuration in the system information message includes: receiving a broadcast message, or receiving a dedicated radio resource control message.

22. A computer-readable medium having program code stored thereon, the program code when executed on a processor of a wireless communication device causes the wireless communication device to perform the method according to any one of claims 15 to 21.

23. A network node is arranged for wireless communication with a wireless communication device, the network node comprising circuitry arranged to perform the method according to any one of claims 1 to 13.

24. A wireless communication device comprises circuitry arranged to perform the method according to any one of claims 15 to 21.

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