Comb-offset hopping and cyclic-shift hopping of sounding reference signals.

Abstract

The arrangements described herein relate to a system, method, apparatus, and non-transitory computer-readable medium for a wireless communication device to receive at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts from a network device. The wireless communication device determines at least one of a comb offset or a cyclic shift for each sounding reference signal (SRS) port associated with an SRS resource based on a transmission time and at least one of the first parameter or the second parameter. The wireless communication device transmits an SRS to the network device according to at least one of the comb offsets or the cyclic shifts.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates generally to wireless communications, and more particularly to comb offset hopping and cyclic shift hopping of sounding reference signals (SRS). [Background technology]

[0002] In time division duplex (TDD) coherent joint transmission (CJT), comb offset hopping and cyclic shift hopping can randomize interference between SRS transmitted from different user equipments (UEs) served by different transmission and reception points (TRPs). Summary of the Invention [Means for solving the problem]

[0003] The exemplary arrangements disclosed herein are intended to solve problems associated with one or more problems presented in the prior art, as well as to provide additional features that will be readily apparent from a review of the following detailed description in conjunction with the accompanying drawings. In accordance with various arrangements, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it will be understood that these arrangements are presented by way of example and not limitation, and it will be apparent to those skilled in the art upon reading this disclosure that various modifications to the disclosed arrangements can be made while remaining within the scope of the present disclosure.

[0004] In some arrangements, a wireless communication device (e.g., a UE) receives from a network device at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts. The UE determines at least one of a comb offset or a cyclic shift for each sounding reference signal (SRS) port associated with an SRS resource based on a transmission time and at least one of the first parameter or the second parameter. The UE transmits an SSRS to the network device according to at least one of the comb offsets or the cyclic shifts.

[0005] In some arrangements, the network device transmits at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts to the UE. The UE determines at least one of the comb offsets or cyclic shifts for each SRS port associated with the SRS resource based on the transmission time and at least one of the first parameter or the second parameter. The network device receives the SRS from the UE according to the at least one of the comb offsets or cyclic shifts.

[0006] These and other aspects and their implementations are described in more detail in the drawings, specification, and claims. The present specification also provides, for example, the following items: (Item 1) 1. A wireless communication method, the method comprising: receiving, by the wireless communication device, from the network device, at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts; determining, by the wireless communication device, at least one of a comb offset or a cyclic shift for each sounding reference signal (SRS) port associated with an SRS resource based on a transmission time and the at least one of the first parameter or the second parameter; transmitting, by the wireless communication device, an SRS to the network device according to the at least one of the comb offset or the cyclic shift; A method comprising: (Item 2) Item 1. The method of item 1, wherein the comb offset of each SRS port associated with the SRS resource is determined based on at least one of an initial comb offset, the transmission time point of a transmission opportunity for the SRS, a pseudo-random sequence, or the first parameter indicating the subset of the comb offsets. (Item 3) The first parameter is a parameter transmissionComb indicating the maximum number of transmission combs and cyclic shifts for the SRS resource, an initial comb offset, and an initial cyclic shift for each SRS port associated with the SRS resource; a set of comb offset hopping offsets, and Comb offset hopping granularity Item 3. The method according to item 2, comprising at least one of: (Item 4) Item 4. The method of item 3, wherein the set of comb offset hopping offsets comprises a number of comb offset hopping offsets, the number being less than or equal to the transmit comb, and each of the comb offset hopping offsets is an integer greater than or equal to 0 and less than or equal to the transmit comb minus 1. (Item 5) Item 4. The method of item 3, wherein the wireless communication device receives a bitmap from the network device indicating the set of comb offset hopping offsets, the length of the bitmap being equal to the transmission comb. (Item 6) the comb offset hopping granularity is an integer equal to or greater than 1; the comb offset hopping granularity is selected from a set of candidate values; Item 4. The method of item 3, wherein the set of candidate values ​​is determined based on the transmission comb. (Item 7) the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; The set of comb offset hopping offsets or the comb offset hopping granularity is indicated using the parameter transmissionComb; and The set of comb offset hopping offsets or the comb offset hopping granularity are fixed parameters. The method according to item 3, (Item 8) the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; Item 4. The method of item 3, wherein the at least one upper layer parameter is configured by the network device for each SRS resource of a plurality of SRS resources. (Item 9) the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using at least one higher layer parameter; The set of comb offset hopping offsets or the comb offset hopping granularity is: the parameter transmissionComb, or At least one comb offset or at least one cyclic shift occupied by at least one legacy SRS resource on at least one overlapping orthogonal frequency division multiplexing (OFDM) symbol 4. The method of claim 3, wherein the network device determines the address of the network device based on at least one of the following: (Item 10) the set of comb offset hopping offsets or the comb offset hopping granularity is configured for the wireless communication device by the network device using transmissionComb; The set of comb offset hopping offsets is:

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

[0007] Various exemplary arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and merely depict exemplary arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered as limiting the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, the drawings are not necessarily drawn to scale.

[0008] [Figure 1] FIG. 1 is a schematic block diagram illustrating an exemplary wireless communication system according to various configurations.

[0009] [Figure 2] FIG. 2 shows a block diagram of an exemplary base station (BS) and exemplary user equipment (UE) according to some arrangements.

[0010] [Figure 3] FIG. 3 is a flow chart diagram illustrating an example method for determining comb offsets and cyclic shift hopping for SRS ports of SRS resources according to various arrangements.

[0011] [Figure 4] FIG. 4 shows various configurations of comb offset hopping.

[0012] [Figure 5] FIG. 5 is a diagram illustrating the implementation of comb offset hopping with various arrangements.

[0013] [Figure 6]FIG. 6 shows various configurations of comb offset hopping.

[0014] [Figure 7] FIG. 7 is a diagram illustrating the implementation of comb offset hopping with various arrangements.

[0015] [Figure 8] FIG. 8 is a diagram illustrating various configurations of comb offset hopping.

[0016] [Figure 9] FIG. 9 is a diagram illustrating the implementation of comb offset hopping with various arrangements.

[0017] [Figure 10] FIG. 10 is a diagram illustrating various configurations of comb offset hopping.

[0018] [Figure 11] FIG. 11 is a diagram illustrating the implementation of comb offset hopping with various arrangements.

[0019] [Figure 12] FIG. 12 shows various configurations of cyclic shift hopping.

[0020] [Figure 13] FIG. 13 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements.

[0021] [Figure 14] FIG. 14 shows various configurations of cyclic shift hopping.

[0022] [Figure 15] FIG. 15 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements.

[0023] [Figure 16] FIG. 16 shows various configurations of cyclic shift hopping.

[0024] [Figure 17] FIG. 17 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements.

[0025] [Figure 18] FIG. 18 shows various configurations of cyclic shift hopping.

[0026] [Figure 19] FIG. 19 is a diagram illustrating the implementation of cyclic shift hopping with various arrangements. DETAILED DESCRIPTION OF THE INVENTION

[0027] To enable those skilled in the art to make and use the present solution, various exemplary arrangements of the present solution are described below with reference to the accompanying drawings. As will be apparent to those skilled in the art, after reading this disclosure, various modifications or variations can be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the exemplary arrangements and applications described and illustrated herein. Furthermore, any specific order or hierarchy of steps in the methods disclosed herein is merely an example approach. Based on design preferences, the specific order or hierarchy of steps in a disclosed method or process can be rearranged while remaining within the scope of the present solution. Therefore, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and that the present solution is not limited to the specific order or hierarchy presented, unless otherwise specified.

[0028] Some legacy UEs that do not support comb offset or cyclic shift hopping and new UEs that support comb offset and cyclic shift hopping may coexist in a cell, and the legacy and new UEs occupy two respective non-overlapping comb offset / cyclic shift subsets to maintain orthogonality between the legacy and new sounding reference signal (SRS) ports. In other words, comb offset / cyclic shift hopping may be restricted within a comb offset / cyclic shift subset. Arrangements disclosed herein relate to systems, methods, non-transitory computer-readable media, and apparatuses for configuring comb offset / cyclic shift subsets and performing comb offset / cyclic shift hopping when the subsets are configured.

[0029] FIG. 1 illustrates an example of a wireless communication system 100 supporting CJT according to various deployments. In the wireless communication system 100, the network-side communication nodes, network devices, or base stations (BSs) may include one or more of a next-generation Node B (gNB), an E-Utran Node B (also known as an evolved Node B, eNodeB, or eNB), a pico station, a femto station, a transmission / reception point (TRP), an access point (AP), or a node. The terminal-side nodes or user equipment (UEs) may include long-range communication systems (e.g., mobile devices, smartphones, personal digital assistants (PDAs), tablets, laptop computers, etc.) or short-range communication systems (e.g., wearable devices, vehicles with vehicular communication systems, etc.). As illustrated, the system 100 includes BSs 110, 120, and 130 and UEs 140 and 150. In some deployments, the BSs 110, 120, and 130 may be referred to as wireless communication nodes, and the UEs 140 and 150 may be referred to as wireless communication devices.

[0030] As shown in FIG. 1 , a BS 110 (e.g., a network device) may provide wireless communication services to UEs within a cell defined by a first boundary 112 and a second boundary 114 that surrounds a larger area than the first boundary 112. A UE 140 is located within the first boundary 112, and a UE 150 is located between the first boundary 112 and the second boundary 114 (within the second boundary 114 but not within the first boundary 112). The area between the first boundary 112 and the second boundary 114 is an edge cell. A UE (e.g., UE 150) located within the edge cell experiences reduced service (e.g., signal strength) than a UE (e.g., UE 140) located within the first boundary 112. The UE 140 may communicate with the BS 110 via a first communication channel. Similarly, the UE 150 may communicate with the BS 110 via a second communication channel.

[0031] BS 120 may provide wireless communication service to UEs within a cell defined by a first boundary 122 and a second boundary 124 that encloses a larger area than first boundary 122. UE 150 is located between first boundary 122 and second boundary 124 (within second boundary 124 but not within first boundary 122). The area between first boundary 122 and second boundary 124 is an edge cell. Similarly, UEs located within edge cells experience reduced service (e.g., signal strength) than UEs located within first boundary 122. UE 150 may communicate with BS 120 via a third communication channel.

[0032] BS 130 may provide wireless communication service to UEs within a cell defined by a first boundary 132 and a second boundary 134 that surrounds a larger area than first boundary 132. The area between first boundary 132 and second boundary 134 is an edge cell. Similarly, UEs located within an edge cell experience reduced service (e.g., signal strength) than UEs located within first boundary 132.

[0033] TDD CJT is introduced in 5G Progressive New Radio (NR) to improve downlink capabilities for cell-edge UEs (e.g., UE 150 with respect to BS 110). In TDD CJT, a CJT UE (e.g., UE 150) transmits SRS toward multiple CJT TRPs (e.g., BSs 110 and 120). The BSs may perform downlink CJT based on a precoder derived from the received SRS. From the perspective of a TRP, a CJT TRP (e.g., BS 110) receives SRS transmitted from both its own serving UE (e.g., UE 140) and a serving UE of another TRP (CJT UE, e.g., UE 150 served by BS 120). Due to SRS resource allocation per TRP, SRS transmitted from serving UEs of different TRPs may be non-orthogonal and may interfere with each other. To randomize interference and improve CJT performance, comb offset hopping and cyclic shift hopping of SRS may be used in addition to frequency hopping and group / sequence hopping. The newly introduced comb offset / cyclic shift hopping may be restricted within a comb offset / cyclic shift subset to support coexistence of legacy and new UEs in a cell.

[0034] As used herein, legacy UEs (and SRS resources, their SRS ports) refer to UEs that do not support comb offset / cyclic shift hopping, and new UEs (and SRS resources, their SRS ports) refer to UEs that support comb offset / cyclic shift hopping.

[0035] 2 shows a block diagram of an example BS 202 (e.g., a network device) and an example UE 204 according to some arrangements. The BS 202 is an example of the BSs 110, 120, and 130. The UE 204 is an example of the UEs 140 and 150.

[0036] The BS 202 includes a BS transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each of which is coupled and interconnected as needed via a data communication bus 220. The UE 204 includes a UE transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each of which is coupled and interconnected as needed via a data communication bus 240. The BS 202 communicates with the UE 204 over a communication channel, which may be any wireless channel or other medium suitable for the transmission of data as described herein.

[0037] The BS 202 and the UE 204 may further include any number of modules other than those shown in FIG. 2 . Those skilled in the art will understand that the various example blocks, modules, circuits, and processing logic described in connection with the implementations disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various example components, blocks, modules, circuits, and steps have been described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software may depend on the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a manner suitable for each particular application, but such implementation decisions should not be construed as limiting the scope of the present disclosure.

[0038] According to some implementations, the UE transceiver 230 may be referred to herein as a UL transceiver including a radio frequency (RF) transmitter and an RF receiver, each including circuitry coupled to the antenna 232. Alternatively, a duplexing switch (not shown) may couple the UL transmitter or receiver to the UL antenna in a time-duplexed manner. Similarly, according to some implementations, the BS transceiver 210 may be referred to herein as a downlink (DL) transceiver including an RF transmitter and an RF receiver, each including circuitry coupled to the antenna 212. Alternatively, a DL duplexing switch may couple the DL transmitter or receiver to the DL antenna 212 in a time-duplexed manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time such that the DL transmitter is coupled to the DL antenna 212 at the same time that the UL receiver circuitry is coupled to the UL antenna 232 to receive transmissions over the wireless transmission link. In some implementations, there is truncated time synchronization with a minimum guard time between changes in duplexing direction.

[0039] The UE transceiver 230 and the BS transceiver 210 are configured to communicate over a wireless data communication link and cooperate with appropriately configured RF antenna arrangements 212 / 232 capable of supporting a particular wireless communication protocol and modulation scheme. In some exemplary implementations, the UE transceiver 210 and the BS transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G and 6G standards. However, it will be understood that the present disclosure is not necessarily limited to application to a particular standard and associated protocol. Rather, the UE transceiver 230 and the BS transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0040] The processor modules 214 and 236 may be implemented or realized using a general-purpose processor, a content-addressable memory, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. As such, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. A processor may also be implemented as a combination of computing devices, e.g., a combination of a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.

[0041] Furthermore, the methods described in connection with the implementations disclosed herein may be implemented directly in hardware, firmware, software modules executed by processor modules 214 and 236, respectively, or any practical combination thereof. Memory modules 216 and 234 may be embodied as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 may be coupled to processor modules 210 and 230, respectively, such that processor modules 210 and 230 can read information from and write information to memory modules 216 and 234, respectively. Memory modules 216 and 234 may be integrated into the respective processor modules 210 and 230. In some implementations, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions executed by processor modules 210 and 230, respectively. Each of the memory modules 216 and 234 may include non-volatile memory for storing instructions executed by the processor modules 210 and 230, respectively.

[0042] The network communications module 218 represents the hardware, software, firmware, processing logic, and / or other components of the BS 202 that enable bidirectional communications between the BS transceiver 210 and other network components and communication nodes configured to communicate with the BS 202. For example, the network communications module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment, without limitation, the network communications module 218 provides an 802.3 Ethernet interface to enable the BS transceiver 210 to communicate with conventional Ethernet-based computer networks. As such, the network communications module 218 may include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)).

[0043] The terms "configured for," "configured to," and conjugations thereof, as used herein with respect to a specified operation or function, refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform a specified operation or function.

[0044] In some deployments where comb offset / cyclic shift hopping is enabled for an SRS resource, at each transmission opportunity, the comb offset / cyclic shift of each SRS port associated with the SRS resource is determined by the time of the transmission opportunity. FIG. 3 is a flowchart illustrating an example method 300 for determining comb offset and cyclic shift hopping for SRS ports of an SRS resource according to various deployments. The method 300 may be performed using the system 100, which includes a UE 150 and a BS 120 (e.g., a network device). In some examples, the BS 120 transmits an indication to the UE 150 that at least one of the comb offset or cyclic shift hopping is enabled, and the UE 150 receives it from the BS 120. The indication may be provided via appropriate signaling or parameters, including higher layer parameters.

[0045] In some examples, examples of higher layer parameters include radio resource control (RRC) parameters, radio resource management (RRM) parameters, radio resource allocation (RRA) parameters, downlink control information (DCI), or physical downlink control channel (PDCCH).

[0046] The BS 120 transmits at least one parameter to the UE 150 that controls the configuration or determination for one or more comb offsets and / or one or more cyclic shifts of the SRS port. For example, at 310, the BS 120 transmits at least one of a first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts to the UE 150. At 320, the UE 150 receives from the BS 120 at least one of the first parameter indicating a subset of comb offsets or a second parameter indicating a subset of cyclic shifts. Each of the at least one first parameter and each of the at least one second parameter may be provided via appropriate signaling or parameters, including higher layer parameters. The comb offsets used to transmit the SRS are restricted to the comb offset subset. The cyclic shifts used to transmit the SRS are restricted to the cyclic shift subset. In some examples, BS 120 transmits, and UE 150 receives from BS 120, at least one parameter indicating an initialization identifier (ID) of the pseudo-random sequence c(i).

[0047] At 330, UE 150 determines at least one of a comb offset or a cyclic shift for each SRS port associated with the SRS resource based on the transmission time and at least one of the first parameter or the second parameter. The SRS resource may be associated with multiple SRS ports. The SRS resource may include a time domain resource and a frequency domain resource.

[0048] At 340, the UE 150 transmits the SRS according to at least one of the comb offset or the cyclin shift to the BS 120. At 350, the BS 120 receives the SRS transmitted according to at least one of the comb offset or the cyclin shift.

[0049] In some examples, legacy and new SRS resources (e.g., SRS resources used by legacy UEs and new UEs) are scheduled over overlapping orthogonal frequency division multiplexing (OFDM) symbols. The legacy and new SRS resources are configured on the same transmission comb. In examples where comb offset and / or cyclic shift hopping is not enabled, the legacy and new SRS resources do not occupy the same cyclic shift on the same comb offset. Such configuration may be enabled or provided by a BS configuration transmitted to the UE.

[0050] In some deployments, for SRS resources configured with comb offset hopping, the SRS port p i Comb offset

number

number

number

[0051] The subset of comb offsets is the upper layer parameter transmissionComb and the comb offset hopping offset

number

number

[0052] In some instances,

number

number

number

number

number

[0053] In some instances,

number

number

number

number

number

[0054] In some examples, the comb offset hopping granularity is an integer equal to or greater than 1. The comb offset hopping granularity is selected from a set of candidate values. The set of candidate values ​​is determined based on the transmission comb. For example, the candidate values ​​for X are {1, 2, 4, 8}. K TC For =2, the possible values ​​of X include {1,2}. TC For =4, the possible values ​​of X include {1, 2, 4}. TC For =8, the possible values ​​of X include {1, 2, 4, 8}. In some examples where X=1, a subset of the comb offsets is equivalent to the entire set of comb offsets.

[0055]

number

[0056]

number

[0057] Using higher layer parameters

number

number

number

number

[0058]

number

number

number

number

number

number

number

[0059] In some deployments, multiple new SRS resources are scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., resource blocks (RBs)) to maintain orthogonality between the new SRS ports, and different new SRS resources may be configured with different subsets of comb offsets. In some examples, multiple new SRS resources are scheduled across overlapping OFDM symbols. The new SRS ports are orthogonal to one another. Different ones of the multiple new SRS resources are configured with different subsets of comb offsets.

[0060] In some deployments, multiple new SRS resources are scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., RBs) to maintain orthogonality between the new SRS ports, and different new SRS resources may be configured with the same subset of comb offsets. It is expected that the same initialization ID of c(i) will be applied to all new SRS resources. In some examples, multiple new SRS resources are scheduled across overlapping orthogonal OFDM symbols. The new SRS ports are orthogonal to one another. Different ones of the multiple new SRS resources are configured with the same subset of comb offsets. The same initialization ID of the pseudo-random sequence c(i) will be applied to all of the multiple new SRS resources.

[0061] In some arrangements, the SRS port p iComb offset

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

number

[0062] In some instances, SRS port p i Comb offset for

number

number

number

number

number

number

number

number

[0063] In some examples, the configuration or selection of M by the base station may be TC , max(L TC ), K TC , and max(K TC) That is, in some examples, the integer may be determined by at least one of L TC , L TC In some examples, the integer M is determined based on at least one of: a maximum of

number

number

number

number

[0064] Figure 4 illustrates the configuration of comb offset hopping with various arrangements. Figure 5 illustrates the implementation of comb offset hopping with various arrangements. Orthogonal resources 401, 402, 403, 404, 405, 406, 407, and 408 correspond to combinations of comb offsets (e.g., 0, 1, 2, or 3) and cyclic shifts (e.g., 0 or 6).

[0065] In Figs. 4 and 5, the transmission comb K TCis 4. When comb offset hopping is not enabled, the legacy 2-port SRS resource occupies 1 comb offset (i.e.

number

number

[0066] As shown in Figure 4, the configuration of the subset of comb offsets is

number

[0067] As shown in FIG. 5, to perform comb offset hopping, implementation 510 includes:

number

number

number

number

number

number

[0068] Figure 6 illustrates the configuration of comb offset hopping with various arrangements. Figure 7 illustrates the implementation of comb offset hopping with various arrangements. Orthogonal resources 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, and 616 correspond to combinations of comb offsets (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and cyclic shifts (e.g., 0 or 6).

[0069] In Figs. 6 and 7, the transmission comb K TC is 8. When comb offset hopping is not enabled, the legacy 4-port SRS resource occupies two comb offsets (i.e.,

number

number

[0070] As shown in Figure 6, the configuration of the subset of comb offsets is

number

[0071] As shown in FIG. 7, to perform comb offset hopping, implementation 710 includes:

number

number

number

number

number

number

number

number

[0072] In Figs. 8 and 9, the transmission comb K TC is 4. When comb offsets are not enabled, the legacy 2-port SRS resource occupies 1 comb offset (i.e.,

number

number

[0073] 8, the configuration of the subset of comb offsets includes X = 2. When comb offset hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 801, 802, 805, and 806.

[0074] As shown in FIG. 9, to perform comb offset hopping, operation 910 involves:

number

number

number

number

number

number

[0075] 10 is a diagram illustrating the configuration of comb offset hopping according to various arrangements. FIG. 11 is a diagram illustrating the implementation of comb offset hopping according to various arrangements. Each of orthogonal resources 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, and 1016 corresponds to a combination of a comb offset (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and a cyclic shift (e.g., 0 or 6).

[0076] In Figs. 10 and 11, the transmission comb K TC is 8. When comb offset hopping is not enabled, the legacy 4-port SRS resource occupies two comb offsets (i.e.,

number

number

[0077] 10, the configuration of the subset of comb offsets includes X = 2. When comb offset hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 1001, 1002, 1005, 1006, 1009, 1010, 1015, and 1016.

[0078] As shown in FIG. 11, to perform comb offset hopping, operation 1110 includes:

number

number

number

number

number

number

number

number

[0079] In some deployments, for SRS resources configured with cyclic shift hopping, the SRS port p i Circular shift of

number

number

[0080] The subset of cyclic shifts is determined by the upper layer parameter transmissionComb and the cyclic shift hopping offset

number

[0081] In some instances,

number

number

number

number

number

number

number

[0082] In some instances,

number

number

number

number

number

number

number

[0083] In some examples, the cyclic shift hopping granularity is an integer equal to or greater than 1. The cyclic shift hopping granularity is selected from a set of candidate values. The set of candidate values ​​is determined based on the maximum number of cyclic shifts. For example, the candidate values ​​of X are {1, 2, 4, 6, 8, 12}.

number

number

number

[0084]

number

[0085]

number

[0086] Using higher layer parameters

number

number

[0087]

number

number

number

number

number

number

number

number

[0088] In some deployments, multiple new SRS resources are scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., RBs) to maintain orthogonality between the new SRS ports, and different new SRS resources may be configured with different subsets of cyclic shifts. In some examples, multiple new SRS resources are scheduled across overlapping OFDM symbols. The new SRS ports are orthogonal to one another. Different ones of the multiple new SRS resources are configured with different subsets of cyclic shifts.

[0089] In some deployments, multiple new SRS resources are scheduled across overlapping OFDM symbols and overlapping frequency ranges (e.g., RBs) to maintain orthogonality between the new SRS ports, and different new SRS resources may be configured with the same subset of cyclic shifts. It is expected that the same initialization ID of c(i) will be applied to all new SRS resources. In some examples, multiple new SRS resources are scheduled across overlapping orthogonal OFDM symbols. The new SRS ports are orthogonal to one another. Different ones of the multiple new SRS resources are configured with the same subset of cyclic shifts. The same initialization ID of the pseudo-random sequence c(i) will be applied to all of the multiple new SRS resources.

[0090] In some arrangements, SRS port p i Circular shift of

number

number

number

number

number

number

number

number

number

number

number

number

number

number

[0091] In some cases, SRS ports

number

number

number

number

number

number

number

number

number

[0092] In some examples, the configuration or selection of M by the base station may include:

number

number

number

number

number

number

[0093] Figure 12 illustrates the configuration of cyclic shift hopping with various arrangements. Figure 13 illustrates the implementation of cyclic shift hopping with various arrangements. Each of orthogonal resources 1201, 1202, 1203, 1204, 1205, 1206, 1207, and 1208 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and a comb offset (e.g., 0).

[0094] In Figures 12 and 13, the maximum number of circular shifts

number

number

number

[0095] As shown in Figure 12, the construction of a subset of cyclic shifts is

number

[0096] As shown in FIG. 13, to perform cyclic shift hopping, operation 1310

number

number

number

number

number

number

number

number

[0097] Figure 14 illustrates the configuration of cyclic shift hopping with various arrangements. Figure 15 illustrates the implementation of cyclic shift hopping with various arrangements. Each of the orthogonal resources 1401, 1402, 1403, 1404, 1405, 1406, 1407, 1408, 1409, 1410, 1411, 1412, 1413, 1414, 1415, 1416, 1417, 1418, 1419, 1420, 1421, 1422, 1423, and 1424 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11) and a comb offset (e.g., 0 or 2).

[0098] In Figures 14 and 15, the maximum number of circular shifts

number

number

number

[0099] As shown in Figure 14, the construction of a subset of cyclic shifts is

number

[0100] As shown in FIG. 15, to perform cyclic shift hopping, operation 1510

number

number

number

number

number

number

number

number

[0101] Figure 16 illustrates various arrangements of cyclic shift hopping. Figure 17 illustrates various arrangements of cyclic shift hopping. Each of orthogonal resources 1601, 1602, 1603, 1604, 1605, 1606, 1607, and 1608 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, or 7) and a comb offset (e.g., 0).

[0102] In Figures 16 and 17, the maximum number of circular shifts

number

number

number

[0103] 16, the configuration of the cyclic shift subset includes X = 2. When cyclic shift hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 1601, 1603, 1605, and 1607.

[0104] As shown in FIG. 17, to perform cyclic shift hopping, operation 1710

number

number

number

number

number

number

number

number

[0105] Figure 18 illustrates the configuration of cyclic shift hopping with various arrangements. Figure 19 illustrates the implementation of cyclic shift hopping with various arrangements. Each of the orthogonal resources 1801, 1802, 1803, 1804, 1805, 1806, 1807, 1808, 1809, 1810, 1811, 1812, 1813, 1814, 1815, 1816, 1817, 1818, 1819, 1820, 1821, 1822, 1823, and 1824 is defined by a cyclic shift (e.g., 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11) and a comb offset (e.g., 0 or 2).

[0106] In Figures 18 and 19, the maximum number of circular shifts

number

number

number

[0107] 18, the configuration of the cyclic shift subset includes X = 3. When cyclic shift hopping is enabled, the orthogonal resources occupied by the new SRS resource belong to orthogonal resources 1803, 1804, 1809, 1810, 1815, 1816, 1821, and 1822.

[0108] As shown in FIG. 19, to perform cyclic shift hopping, operation 1910

number

number

number

number

number

number

number

number

[0109] While various configurations of the present solution have been described above, it should be understood that they are presented by way of example only, and not by way of limitation. Similarly, various diagrams may depict example architectures or configurations provided to enable those skilled in the art to understand example features and functionality of the present solution. However, such skilled artisans will understand that the solution is not limited to the example architectures or configurations depicted, but may be implemented using a variety of alternative architectures and configurations. Furthermore, as will be understood by those skilled in the art, one or more features of some configurations may be combined with one or more features of other configurations described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the example configurations described above.

[0110] It will also be understood that any reference herein to an element using a designation such as "first," "second," etc., does not generally limit the quantity or order of those elements. Rather, these designations may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to a first and a second element does not imply that only two elements can be used or that the first element must precede the second element in some way.

[0111] Additionally, those skilled in the art will understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, and symbols that may be referred to in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0112] Those skilled in the art will further appreciate that any of the various illustrative logic blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of the two), firmware, various forms of programs or design code incorporating instructions (which may be conveniently referred to herein as "software" or "software modules"), or any combination of these technologies. To clearly illustrate this interchangeability of hardware, firmware, and software, the various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these techniques, depends on the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in various ways for each particular application, and such implementation decisions do not depart from the scope of this disclosure.

[0113] Furthermore, those skilled in the art will understand that the various example logic blocks, modules, devices, components, and circuits described herein may be implemented in or by integrated circuits (ICs), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logic blocks, modules, and circuits may further include an antenna and / or transceiver for communicating with various components within a network or device. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP core, or any other suitable configuration for performing the functions described herein.

[0114] When implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any medium that can enable a computer program or code to be transferred from one place to another. A storage medium can be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0115] As used herein, the term "module" refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Furthermore, for purposes of discussion, various modules are described as individual modules. However, as will be apparent to one skilled in the art, two or more modules may be combined to form a single module that performs associated functions according to the implementation of the present solution.

[0116] Furthermore, memory or other storage and communication components may be used in the arrangement of the solution. It will be understood that, for clarity, the above description has described the arrangement of the solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements, or domains may be used without detracting from the solution. For example, functions shown to be performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Thus, references to specific functional units do not indicate a strict logical or physical structure or organization, but merely to suitable means for providing the described functionality.

[0117] Various modifications to the implementations described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other implementations without departing from the scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the implementations shown herein but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method, the wireless communication method comprising: receiving, by the wireless communication device, from a network device, first parameters comprising an indication of a set of comb offset hopping offsets; determining, by the wireless communication device, a comb offset for each SRS port associated with an SRS resource based on a transmission time of a sounding reference signal (SRS) transmission opportunity, an initial comb offset, and the first parameter, wherein the set of comb offset hopping offsets comprises a number of comb offset hopping offsets, the number being less than or equal to a transmission comb, the set of comb offset hopping offsets being indicated by a bitmap, and a length of the bitmap is equal to the transmission comb; transmitting, by the wireless communication device, the SRS to the network device according to the comb offset; A wireless communication method comprising:

2. SRS port p ｉ for the comb offset [Number 306] teeth, [Number 307] is determined by where: [Number 308] is the SRS port p ｉ is the initial comb offset of K ＴＣ is the transmission comb, [Number 309] The wireless communication method according to claim 1 , wherein: is a comb-offset hopping offset belonging to the set of comb-offset hopping offsets.

3. receiving, by the wireless communication device, a second parameter from the network device, the second parameter indicating a set of cyclic shifts; determining, by the wireless communication device, a cyclic shift for each SRS port associated with an SRS resource based on the second parameter; The wireless communication method of claim 1 , further comprising:

4. A wireless communication method, the wireless communication method comprising: transmitting, by a network device, first parameters to a wireless communication device, the first parameters comprising an indication of a set of comb offset hopping offsets, wherein the wireless communication device determines a comb offset for each SRS port associated with an SRS resource based on a transmission time of a sounding reference signal (SRS) transmission opportunity, an initial comb offset, and the first parameters, the set of comb offset hopping offsets comprising a number of comb offset hopping offsets, the number being less than or equal to a transmission comb, the set of comb offset hopping offsets being indicated by a bitmap, and a length of the bitmap being equal to the transmission comb; receiving, by the network device, the SRS from the wireless communication device according to the comb offset; A wireless communication method comprising:

5. SRS port p ｉ for the comb offset [Number 306] teeth, [Number 307] is determined by where: [Number 308] is the SRS port p ｉ is the initial comb offset of K ＴＣ is the transmission comb, [Number 309] The wireless communication method according to claim 4 , wherein: is a comb-offset hopping offset belonging to the set of comb-offset hopping offsets.

6. transmitting a second parameter from the network device to the wireless communication device indicating a set of cyclic shifts; The wireless communication method of claim 4 , wherein a cyclic shift for each SRS port associated with an SRS resource is determined based on the second parameter.

7. 1. A wireless communication device, comprising: the wireless communication device comprises at least one processor; The at least one processor receiving a first parameter from a network device via a transceiver, the first parameter comprising an indication of a set of comb offset hopping offsets; determining a comb offset for each SRS port associated with an SRS resource based on a transmission time point of a sounding reference signal (SRS) transmission opportunity, an initial comb offset, and the first parameter, wherein the set of comb offset hopping offsets comprises a number of comb offset hopping offsets, the number being less than or equal to a transmission comb, the set of comb offset hopping offsets being indicated by a bitmap, and a length of the bitmap is equal to the transmission comb; transmitting the SRS to the network device via the transceiver according to the comb offset; 10. A wireless communication device configured to:

8. SRS port p ｉ for the comb offset [Number 306] teeth, [Number 307] is determined by where: [Number 308] is the SRS port p ｉ is the initial comb offset of K ＴＣ is the transmission comb, [Number 309] The wireless communication device of claim 7 , wherein: is a comb-offset hopping offset belonging to the set of comb-offset hopping offsets.

9. The at least one processor receiving a second parameter indicative of a set of cyclic shifts from the network device via the transceiver; determining a cyclic shift for each SRS port associated with the SRS resource based on the second parameter; The wireless communication device of claim 7 configured to:

10. 1. A network device, comprising: the network device comprises at least one processor; The at least one processor transmitting first parameters comprising an indication of a set of comb offset hopping offsets to a wireless communication device via a transceiver, wherein the wireless communication device determines a comb offset for each SRS port associated with an SRS resource based on a transmission time of a sounding reference signal (SRS) transmission opportunity, an initial comb offset, and the first parameters, the set of comb offset hopping offsets comprising a number of comb offset hopping offsets, the number being less than or equal to a transmission comb, the set of comb offset hopping offsets being indicated by a bitmap, and a length of the bitmap being equal to the transmission comb; receiving the SRS from the wireless communication device via the transceiver according to the comb offset; 2. A network device configured to:

11. SRS port p ｉ for the comb offset [Number 306] teeth, [Number 307] is determined by where: [Number 308] is the SRS port p ｉ is the initial comb offset of K ＴＣ is the transmission comb, [Number 309] The network device of claim 10 , wherein: is a comb-offset hopping offset belonging to the set of comb-offset hopping offsets.

12. the at least one processor is configured to transmit, via the transceiver to the wireless communication device, a second parameter indicative of a set of cyclic shifts; The network device of claim 10 , wherein a cyclic shift for each SRS port associated with an SRS resource is determined based on the second parameter.

Images