Transmission link configuration using reference signal mapping

Abstract

Methods, systems, and apparatus for configuring transmission links using reference signal mapping in next-generation cellular networks are described. An example method for wireless communication based on the disclosed technology includes transmitting data through at least one transmission link configured based on a mapping between two reference signals, wherein the two reference signals are configured with different subsets of one or more network parameters. Another example method includes dividing multiple SRS (depth sounding reference signal) resource sets into multiple groups based on network parameters of SRS resources or SRS resource sets, and within one of the multiple groups, transmitting only one SRS resource from each of the multiple SRS resource sets at a time, wherein SRS resources from different SRS resource sets can be transmitted simultaneously. The described methods may include beam management implementations for wireless communication.

Description

[0001] This application is a divisional application of Chinese patent application No. 201880095036.9, filed on June 28, 2018, entitled “Transmission Link Configuration Using Reference Signal Mapping”. Technical Field

[0002] This document typically pertains to wireless communications. Background Technology

[0003] Wireless communication technology is propelling the world towards an increasingly interconnected and networked society. The rapid development and technological advancements in wireless communication have led to greater demands for capacity and connectivity. Other factors, such as energy consumption, equipment cost, spectrum efficiency, and latency, are also important for meeting the needs of various communication scenarios. Compared to existing wireless networks, next-generation systems and wireless communication technologies need to support a growing number of users and devices, thus requiring reliable and efficient configuration of communication links. Summary of the Invention

[0004] This document relates to methods, systems, and devices for configuring transmission links using reference signal mapping in new radio (NR) wireless networks. In the examples, configuring transmission links using reference signal mapping includes beam management, which enables high throughput support for multiple devices distributed in various directions across multiple component carriers (CCs) and bandwidth portions (BWPs).

[0005] In one exemplary aspect, a wireless communication method is disclosed. The method includes transmitting data via at least one transmission link configured based on a mapping between two reference signals, wherein a subset of one or more network parameters configured for the two reference signals are different.

[0006] In another exemplary aspect, a wireless communication method is disclosed. The method includes transmitting a mapping between two reference signals, the two reference signals being configured with different subsets of one or more network parameters.

[0007] In yet another exemplary aspect, a wireless communication method is disclosed. The method includes: dividing a plurality of SRS (Sound Reference Signal) resource sets into a plurality of groups based on network parameters of SRS resources or SRS resource sets, and within one of the plurality of groups, transmitting only one SRS resource from each of the plurality of SRS resource sets at the same time, wherein SRS resources from different SRS resource sets can be transmitted simultaneously.

[0008] In yet another exemplary aspect, the above-described method is specifically embodied in the form of processor-executable code and stored in a computer-readable program medium.

[0009] In yet another exemplary embodiment, a device configured or operable to perform the above-described methods is disclosed.

[0010] The foregoing and other aspects and their implementations are described in more detail in the accompanying drawings, description and claims. Attached Figure Description

[0011] Figure 1 Examples of base stations (BS) and user equipment (UE) in wireless communication according to some embodiments of the present disclosure are shown.

[0012] Figure 2 An example of uplink beam management for multiple CCs is shown.

[0013] Figure 3 Examples of multiple probe reference signal (SRS) resource sets for beam management are shown.

[0014] Figure 4 An example of a wireless communication method is shown.

[0015] Figure 5 Another example of a wireless communication method is shown.

[0016] Figure 6 This illustrates yet another example of a wireless communication method.

[0017] Figure 7 This is a block diagram representation of a portion of an apparatus according to some embodiments of the present disclosure. Detailed Implementation

[0018] Fifth-generation (5G) communication systems are poised to deliver increasing throughput to congested mobile user environments in the millimeter-wave spectrum (above approximately 10 GHz) using micro and picocell networks. These frequencies offer higher bandwidth but operate under more challenging propagation conditions than the lower frequencies traditionally used for wireless services, particularly in terms of robustness. To address these channel impairments, 5G and NR cellular networks can configure transmission links using reference signal mapping (e.g., by establishing highly directional transmission links) to maintain acceptable communication quality for users. In this example, the directional link, requiring fine beam alignment between the transmitter and receiver, is achieved through a set of operations called beam management.

[0019] In multi-CC (component carrier) aggregation transmission, for in-band CA (in-band carrier aggregation), multiple CCs within the same band can share the UE's radio frequency (RF), and the UE can simultaneously receive the beam. This capability is also available when using a single CC. These CCs belong to the same CC group, for example, within the same frequency band or sharing the same antenna connector. However, in the current NR beam management architecture, if the parameter carriers in the CSI report configuration are different, channel state information (CSI) feedback is performed independently for each CC, and there is no direct relationship between CC feedback.

[0020] Based on the disclosed technology, the base station can better implement multi-CC aggregation scheduling for downlink (DL) beam management and the relationship between RS (reference signal) and RS corresponding feedback on different CC / BWPs.

[0021] Figure 1 An example of a wireless communication system (e.g., a 5G or NR cellular network) including a BS120 and one or more user equipments (UEs) 111, 112, and 113 is shown. In some embodiments, the UE may feed back CSI (131, 132, 133) to the BS, which allows the BS to perform beam management for subsequent communication (141, 142, 143) from the BS to the UE. The UE may be, for example, a smartphone, tablet, mobile computer, machine-to-machine (M2M) device, Internet of Things (IoT) device, etc. In this document, section headings are used to improve the readability of the description and do not in any way limit the discussion or embodiments (and / or implementations) to the respective sections.

[0022] 1. Examples of existing implementation methods

[0023] For downlink, synchronization signal blocks (SSBs, or synchronization / PBCH blocks) and CSI-RS can be used for downlink beam management. Current NR architecture design specifies that the base station can configure a CSI report configuration (CSI-ReportConfig or report setting) for the UE, and then configure one or more CSI resource configurations (CSI-ResourceConfig or resource setting) for each CSI report configuration. A resource set can be transmitted within a CSI resource configuration. This resource set can contain multiple CSI-RS resources or SSBs for beam management. For DL ​​beam management, the UE is configured with a CSI ReportConfig where reportQuantity is set to "cri-RSRP", "none", or ssb-Index-RSRP (reference signal received power). If the resource is a CSI-RS, a "repeated" parameter must be configured in the resource set. When repeated is off, the UE needs to select the best CSI-RS resource from the CSI-RS resource set and then report the CRI (CSI-RS resource indicator) to the base station. The CRI corresponds to the selected CSI-RS resource in the resource set. If repeated is on, the CRI may not be reported. At this point, the UE performs a receive beam scan. The UE will select one of the best receive beams for reception, but does not need to report to the base station. If the parameter `groupBasedBeamReporting` is enabled in the CSI reporting configuration, the UE needs to report two CRIs or SSBRIs, meaning the UE selects two beams (corresponding to two CSI-RS resources or SSB indices), and the user can receive both beams simultaneously. If the parameter `groupBasedBeamReporting` is disabled in the CSI reporting configuration, the UE needs to report N CRIs or SSBRIs, meaning the UE selects N beams (corresponding to N CSI-RS resources or SSB indices), and N is configurable.

[0024] For the uplink, in the current NR architecture, when transmitting SRS resources, the base station can configure spatially related parameters (SRS-SpatialRelationInfo or spatialRelationInfo in 3GPP Technical Specification 38.331) for the UE. For example, the transmission beam of the SRS resource is the same as the beam of the reference signal configured in the spatially related parameters. The configured reference signal can be SSB, CSI-RS, or SRS (the CC and BWP in which they operate are also notified). If SSB or CSI-RS is configured, the UE uses the same beam as the receive beam used to receive SSB or CSI-RS when transmitting SRS; this is the intended use of channel reciprocity or beam correspondence. These spatially related (or spatially correlated) parameters (examples of which are shown in Table 1 below) are typically not configured by the user.

[0025] Table 1: Examples of spatially related parameters

[0026]

[0027] Uplink beam management is required at high frequencies. In this case, the UE may be configured with several SRS resource sets. The set parameter 'usage' = beamManagement indicates that the SRS resource set is used for beam management. Within the configured SRS resource sets used for beam management, different SRS resources within each resource set cannot be transmitted simultaneously, while SRS resources in different SRS resource sets can be transmitted simultaneously. In other words, when the higher-layer parameter SRS-SetUse is set to 'BeamManagement', at a given time, only one SRS resource from each of the multiple SRS sets can be transmitted. SRS resources in different SRS resource sets can be transmitted simultaneously. Available usage options are shown in Table 2.

[0028] Table 2: Examples of Parameter Usage

[0029]

[0030] 2. Example Implementation for Downlink (DL) Communication

[0031] For downlink beam management, in single-carrier transmission, the base station can determine which transmission beam to use for the actual data transmission for the UE based on feedback from the UE. If the UE's capability is to receive a maximum of M beams simultaneously, the base station will typically not schedule the UE to transmit more than M beams at once; otherwise, the user would not have the capability to receive multiple beams. For example, M=2 means that the UE has 2 antenna panels and can receive a maximum of 2 beams at a time.

[0032] In multi-CC aggregation transmission, for inter-band CA, since independent antenna connectors or RF chains or power amplifiers (PAs) are available, the UE can use separate RF units to receive different beams.

[0033] In some embodiments, for in-band carrier aggregation (CA), for multiple carriers (CCs) within the same frequency band, the UE's radio frequency (RF) can be shared, and the UE's beam reception capability is the same as that of the CCs. These CCs belong to the same CC group, for example, within the same frequency band, or share the same antenna connector or power amplifier (PA).

[0034] In the current NR beam management architecture, if the parameter carriers in the CSI report configuration are different, CRI / SSBRI feedback for beam management is performed separately for each CC, and there is no direct relationship between the CC feedbacks.

[0035] Currently, CSI report configuration and resource configuration are configured separately for each CC, and the index fed back by CRI / SSBRI is an index of the resource order in the resource set under the resource configuration, and is a local variable in the resource set. For example, even if the CSI-RS resource ID is the same on different CCs, the beams may not be the same. In this way, when the base station actually transmits signals, in the case of CA (mainly for CA within the frequency band), it may be difficult to determine whether the beams on multiple CCs can be received by the UE simultaneously.

[0036] For example, assume the UE's capability is 1 (e.g., M = 1). When two CCs aggregate, the CRI reported by the UE on CC0 is 0, corresponding to the first CSI-RS resource in the resource set configured on CC0. Simultaneously, the CRI reported by the UE on CC1 is equal to 1, corresponding to the second CSI-RS resource in the resource set configured on CC1. The CSI-RS resources on CC0 and CC1 are configured separately. The base station cannot know whether the UE can simultaneously receive the CSI-RS resource corresponding to CRI = 0 on CC0 and the CSI-RS resource corresponding to CRI = 1 on CC1. Assuming that CRI = 0 on CC0 and CRI = 1 on CC1 correspond to the same UE receive beam, the base station can use said beam to schedule data signals or reference signals on CC0 and CC1. Otherwise, it cannot (because the UE's capability is only 1).

[0037] Establishing relationships between RSs and between corresponding feedbacks on different CCs / BWPs for DL ​​beam management enables base stations to better achieve multi-CC aggregation scheduling.

[0038] In some embodiments, the UE feeds back CSI-RS resources or SSB indices for beam management on different CCs / BWPs, thereby indicating whether the CSI-RS resources / SSBs can be received simultaneously by the UE. To save overhead, the UE may only feed back a portion of the CSI-RS resources / SSBs for beam management on different CCs / BWPs to indicate whether the CSI-RS resources / SSBs can be received simultaneously by the UE. After feeding back the CRI / SSBRI on each CC / BWP, the UE may further feed back whether the reference signals corresponding to these CRI / SSBRIs on different CCs / BWPs can be received simultaneously.

[0039] In existing implementations, the carrier of the RS configured in the CSI report configuration is determined by the parameter carrier in the CSI report configuration. The value set by the carrier parameter may differ in different CSI report configurations (e.g., corresponding to different CCs). Establishing a relationship between the feedback RSs for DL ​​beam management on different CCs / BWPs is equivalent to establishing corresponding CSI-RS resource or SSB relationships in different CSI report configurations. For example, for beam management, the UE feeds back RS relationships or mappings in different CSI report configurations to indicate (i) whether CSI-RS resources or SSBs linked to different CSI reports can be received simultaneously by the UE, or (ii) whether reference signals corresponding to CRI / SSBRIs linked to different CSI reports can be received simultaneously.

[0040] In some embodiments, feedback reference signal relationships in different CSI reporting configurations may include adding one or more reporting parameters to each CSI reporting configuration, which can be used to indicate the corresponding purpose in the current CSI reporting configuration. This includes the ability to simultaneously receive or not simultaneously receive the corresponding CSI-RS resource or SSB used for beam management in the beam-managed CSI-RS resource or SSB, as well as the CSI-RS resource or SSB in the newly added CSI reporting configuration. In one example, the newly added parameter may include the index of the CC and the ID of the CSI reporting configuration under the CC. In another example, the index of the newly added CC (which may also include the index of the BWP) may differ from the value of the parameter carrier in the current CSI reporting configuration.

[0041] In some embodiments, to minimize overhead, the relationship between the CSI-RS resources / SSBs corresponding to the CRI / SSBRIs reported in the current CSI report configuration and the CSI-RS resources / SSBs corresponding to the CRI / SSBRIs reported in the newly added CSI report configuration can be reported. The CRI / SSBRIs reported in the newly added CSI report configuration may be the latest CRI / SSBRI feedback from the UE.

[0042] For example, one or more parameters have been added to the parameters cri-RSRP and ssb-Index-RSRP in the CSI report configuration. Each parameter includes a carrier parameter and one or more CSI report configuration parameters. For example, {Carrier,CSI-ReportConfigID} indicates whether the UE needs to report whether the reference signal corresponding to the current CSI report configuration and the reference signal corresponding to the CSI report in CSIReportConfigID on the carrier can be received simultaneously.

[0043] For example, CSI report configuration parameters include: reportConfigId = 0, carrier = 0 (indicating that the RS corresponding to the CSI report configuration is transmitted on carrier 0), groupBasedBeamReporting = enable (assuming the UE needs to report 2 CRIs), and reportQuantity = cri-RSRP. In other words, the UE reports two CRIs corresponding to the CSI-RS resource set of carrier 0 and reportConfigId = 0, denoted as CRI 0 and CRI 1. According to the disclosed technology, a new parameter has been added. This parameter may include: carrier = 1, reportConfigId = 0. Simultaneously, the UE may also need to report whether the CSI-RS resources corresponding to X CRIs corresponding to reportConfigId = 0 on carrier 1 and CRI 0 and CRI 1 on carrier 0 can be received simultaneously. For example, if X = 1 and the corresponding CRI on carrier 1 is CRI 0', then the UE needs to report whether the CSI-RS resource corresponding to CRI 0' can be received simultaneously with the CSI-RS resources corresponding to CRI 0 and CRI 1.

[0044] In some embodiments, and compared to the current NR feedback mechanism, the UE needs to feed back 2 more bits. The first bit indicates whether CRI 0' and CRI 0 can be received simultaneously. For example, 1 can indicate that they can be received simultaneously, while 0 can indicate that the function is not supported. The second bit indicates whether CRI 0' and CRI 1 can be received simultaneously. Assuming that in the current CSI reporting configuration, the UE needs to feed back N1 CRIs / SSBRIs, and the number of CRIs / SSBRIs corresponding to the newly added parameter is N2, then the UE needs to feed back N1*N2 bits for this newly added parameter, which further indicates whether the RSs corresponding to the previously fed-back N2 CRIs / SSBRIs and N1 CRIs / SSBRIs can be received simultaneously.

[0045] In some embodiments, and with more UE feedback required compared to the current NR feedback mechanism, the base station can use this additional feedback to determine which beams can be shared among multiple CCs and which cannot, thereby reducing erroneous scheduling and compensating for the deficiencies of the current NR mechanism.

[0046] As described above, one or more parameters can be added to the CSI report configuration, each including a carrier parameter and one or more CSI report configuration IDs. This causes the UE to report CSI in the current CSI report configuration. The relationship between the RS corresponding to the current CSI report configuration and the RS corresponding to the newly added CSI report configuration indicates whether RSs can be received simultaneously. This may also mean that the RSs have the same spatial parameters (e.g., the same spatial transmission filter), the same port, or the same beam. Because the spatial parameters / port / beam are the same, this means that they can be received simultaneously. Since the time-domain types of different CSI report configurations may be different (e.g., periodic, semi-permanent, or aperiodic), the time-domain types of the reference signals corresponding to different CSI report configurations may be different, or the reference signals corresponding to different CSI report configurations may be different. The resource set includes a "repeat" parameter, which may have different values, or the TCI (Transmission Configuration Indicator) configuration in the reference signal corresponding to different CSI report configurations carrying type D qcl-Type may be different. The disclosed techniques use, but are not limited to, the following parameters to indicate the corresponding feedback relationships of the RS and / or RS used for beam management: BWP, CC, time-domain type (e.g., periodic, aperiodic, semi-permanent), whether spatial parameters are configured (or whether Type D qcl-Type is configured in TCI), and the configuration of the arguments (e.g., on / off). An example of the current configuration report is shown in Table 3.

[0047] Table 3: Example of a configuration report

[0048]

[0049] In other embodiments, multiple CSI resource configurations across different CCs / BWPs can be configured within a single CSI report configuration. The UE needs to provide feedback on which CSI-RS resources / SSBs within which CC / BWP can be received simultaneously.

[0050] 3. Example Implementation for Uplink (UL) Communication

[0051] For uplink beam management, when SRS is used for beam management, an SRS resource set can be considered as an SRS beam that can be transmitted by an antenna panel. Since a panel typically has only one RF or antenna connector, signals can only be transmitted in one direction at a time; for example, a beam corresponding to an SRS resource in the SRS resource set. The number of SRS resource sets used for beam management corresponds to the number of UE panels. Different panels are configured with different RF or antenna connectors, thus multiple panels can transmit multiple beams simultaneously. When configuring SRS, the base station configures the number of UE SRS resource sets and the number of resources in each set based on the UE's capability report for beam management.

[0052] In some embodiments, when initial beam training is performed and channel reciprocity is not established, the base station configures M1 resource sets for the UE based on the UE's capability feedback and the parameter 'usage' = beamManagement, and configures M2 resources for each resource set, with each resource not carrying spatially related parameters. The UE will use M1 panels. Each panel transmits a total of M2 SRS resources corresponding to M2 different beams at different times. Therefore, the total M1*M2 SRS resources used for beam management correspond to a total of M1*M2 beams. The M2 beams under each SRS resource cannot be transmitted simultaneously because they come from the same panel. The UE transmits a maximum of M1 beams from each of the M1 SRS resource sets at a time.

[0053] In some embodiments (e.g., within a single CC transmission), a predefined beam management relationship can be established between the UE and the base station. This predefined relationship allows the base station to avoid beam scheduling errors. For example, the base station will not simultaneously schedule multiple beams transmitted by the same UE panel because the UE does not support this function.

[0054] In other embodiments (e.g., when scheduling multiple CCs, and particularly for intra-band CA scheduling), SRS beam management under different CCs or BWPs in the current NR protocol is performed separately. Specifically, when the SRS resource set used for beam management is not configured with spatial correlation parameters, beam management for each CC / BWP has no correlation. This increases the probability that the base station may make scheduling errors.

[0055] Figure 2 An example of uplink beam management for multiple CCs is shown. Figure 2As shown, and since there are no space-related parameter configurations, the SRS transmission beam direction is entirely implemented by the UE. If the beam directions of the four SRS resources under SRS resource set #0 on CC0 and the four SRS resources under SRS resource set #0 on CC1 do not satisfy a one-to-one correspondence, then if the base station is adjusting the beam direction transmitted by resource #0 to the beam direction scheduled on CC0, and the beam direction transmitted by resource #0 is also scheduled on CC1. In some embodiments, resource #0 of CC0 and CC1 represents different beam directions and comes from the same panel, so these two beams cannot be transmitted by the UE simultaneously, which will lead to a scheduling error.

[0056] Problems with ambiguous beam management between different CC / BWP (e.g.) Figure 2 (As described in the context) This can be resolved by establishing a correspondence between SRS used for beam management between different CCs / BWPs. Typically, these CCs belong to the same CC group (e.g., multiple CCs within the same frequency band). These CCs share the same RF or antenna connector, or the same PA. Here, the correspondence refers to the correspondence or mapping between SRS resources or resource sets between different CCs / BWPs. A correspondence between two SRS resources means that they share the same spatial parameters (spatial transmission filters), the same port, or the same transmission beam, and these two resources with a correspondence can be transmitted simultaneously by the UE.

[0057] (1) Implementation based on resource or resource set ID. The ID of a resource or resource set can be used to determine a mapping. In one example, the mapping can be between resources with the same resource ID on different CC / BWPs. In another example, the mapping can be between resource sets with the same resource set ID on different CC / BWPs (assuming that resources in these sets with the same resource set ID have a one-to-one mapping). In yet another example, the ResourceConfig structure can contain one or more SRS resource sets, and ResourceConfigs with the same ID correspond to each other. When ResourceConfig IDs are the same, the resource sets configured below correspond one-to-one with the sequences. Resources under the corresponding resource set correspond one-to-one with the sequences.

[0058] (2) An embodiment based on predefined correspondence. The resource sets used for beam management between different BWPs / CCs are predefined to have a one-to-one correspondence.

[0059] (3) Implementation based on RRC signaling or MAC signaling. Radio Resource Control (RRC) and Media Access Control (MAC) signaling can be used to configure the correspondence between resource sets / resources / resourceConfig and BWP / CC parameters.

[0060] In one example, one or more parameters can be added under an SRS resource, each parameter configured with CC, BWP, and another SRS resource under BWP and CC. The newly added parameters may include SRS resource ID, CC ID, and BWP ID, which indicate a correspondence between the current SRS resource and the newly added SRS resource. The CC / BWPID of the newly added SRS resource may also have the newly added parameters. If multiple parameters are added under the current SRS resource, then multiple SRS resources under CC / BWP are associated with the current SRS resource.

[0061] In another example, one or more parameters are added under an SRS resource set, where each parameter is configured with a CC, an SRS resource set, a BWP, and an SRS resource set, or multiple other resources. The newly added parameter may include an SRS resource set ID or multiple resource IDs, a CC ID, and a BWP ID, and can be used to indicate that the current SRS resource set corresponds to a resource under the newly added SRS resource set (e.g., in a one-to-one correspondence). It can also be used to indicate that the current resource set under the resource set corresponds to the SRS resource contained in the newly added parameter.

[0062] The above embodiments (1), (2), and (3) can be implemented for SRS in beam management (e.g., in the case of parameter usg = beamManagement under the SRS resource set). These embodiments can be combined with the embodiments described below.

[0063] 4. Example Implementation of UL Communication Based on Resource Set Grouping

[0064] In existing implementations, even for a single CC transmission, UL beam management can be problematic. For example, and as... Figure 3 As shown, three SRS resource sets can be configured for beam management under CC0 and BWP0. For all resources under the first two SRS resource sets (e.g., set #0 and set #1), there are no spatially dependent parameters, and each SRS resource under the third SRS resource set (e.g., set #2) is configured to use spatially dependent parameters, which include the SRS resource IDs corresponding to some resources in the first SRS resource set. In the example, the RS for the spatially dependent parameters of SRS resources #8 and #9 can be SRS resources #0 and #1 under SRS resource set #0, respectively. According to the current NR mechanism, SRS resources under different SRS resource sets can be transmitted simultaneously. This means that resources #0 and #9 can be transmitted simultaneously. However, resources #0 and #9 are transmitted from the same panel and cannot be transmitted simultaneously because the beam of resource #9 is the same as the beam of resource #1, which contradicts the current NR mechanism.

[0065] exist Figure 3 The apparent contradictions described in the context can be resolved through UL beam management that reuses resources based on the attributes of SRS resources or SRS resource sets. SRS resource sets are grouped, and the grouping satisfies certain conditions of the SRS resource sets within one of the groups. As mentioned earlier, different SRS resources within each resource set cannot be transmitted simultaneously, while SRS resources from different SRS resource sets can be transmitted simultaneously, and only one SRS resource can be transmitted at a time within an SRS resource set. The grouping of SRS resource sets can be based on, but is not limited to, the following attributes:

[0066] Attribute 1: Does all SRS resources under an SRS resource set contain spatially dependent parameters? For example, SRS resource sets containing spatially dependent parameters belong to the same SRS resource set group, such as group #0, while SRS resource sets without spatially dependent parameters belong to another SRS resource set group, such as group #1. After grouping, at least within group #1, the following rules should be satisfied: different SRS resources in each resource set cannot be sent simultaneously, but SRS resources in different SRS resource sets can be sent simultaneously, and only one SRS resource can be sent from an SRS resource set at a time. For group #0, the rules may or may not be satisfied.

[0067] Attribute 2: If all SRS resources under an SRS set contain spatial dependency parameters, the type of RS in the spatially related number can be used to implement grouping (e.g., RS can be CSI-RS, SSB, or SRS).

[0068] In one example, the SRS resource set that does not contain spatially related parameters belongs to SRS resource set group #0, the SRS resource set that contains spatially related parameters belongs to SRS resource set group #1, and the CSI-RS resource set that contains spatially related parameters belongs to SRS resource set group #2.

[0069] In another example, the RS type in the spatial parameters is grouped by SRS. If the spatial parameters of SRS resources under one or more SRS resource sets are all SRS, then whether the SRS resources under the RS resource set can be sent simultaneously depends on whether the SRS in the corresponding spatial parameters can be sent simultaneously. For example, if the SRS resources configured in the spatially related parameters of two SRS resources are the same or can be sent simultaneously, then these two SRS resources can be sent simultaneously.

[0070] Attribute 3:All SRS resource time-domain types (semi-permanent, periodic, aperiodic) under SRS resources. For example, aperiodic SRS resource sets belong to SRS resource set group #0, semi-permanent SRS resource sets belong to SRS resource set group #1, and periodic SRS resource sets belong to SRS resource set group #2.

[0071] Attribute 4: An SRS set belongs to a CC and / or a BWP. For example, resource sets belonging to the same CC and BWP then belong to the same SRS resource set group.

[0072] Attribute 5: Based on the value of the repetition parameter. In one example, if two SRS resources contain the same spatial parameter and the SRS resource set parameter of both SRS resources is set to off, then two SRS resources cannot be transmitted simultaneously. In another example, if two SRS resources contain the same spatial parameter and the spatial parameter is the same for all SRS resources, then these three SRS resources cannot be transmitted simultaneously. In yet another example, if two SRS resources contain the same spatial parameter as other SRS resources, then these three SRS resources cannot be transmitted simultaneously. In some embodiments, the spatial parameter may include SRS, CSI-RS, or SSB. If repetition is on for an SRS resource set, then the SRS resources within the resource set can be transmitted using the same spatial transmission filter.

[0073] Attribute 6: Based on two of the combined attributes 1-5. For example, SRS resource sets belonging to the same CC / BWP and time-domain type are in the same group.

[0074] In some embodiments, the above rules can be applied to beam-managed SRS resource sets (e.g., if the attributes of the sets are different, the set groups will also be different). Furthermore, after grouping, only some groups may meet the rules. For example, only groups of SRS resource sets carrying and not carrying spatially dependent parameters can be selected and satisfy the rules (within the group, different SRS resources in each resource set cannot be transmitted simultaneously, while SRS resources in different SRS resource sets can be transmitted simultaneously, and only one SRS resource can be transmitted at a time in each SRS resource set), while other groups may not meet the rules.

[0075] In some embodiments, the rule within a group is that when the higher-level parameter SRS-SetUse is set to 'BeamManagement', only one SRS resource from each of multiple SRS sets can be transmitted at a given time. SRS resources from different SRS resource sets can be transmitted simultaneously.

[0076] In some embodiments, when the advanced parameter usage = beamMangement, each of the multiple SRS resource sets can have only one SRS resource sent at a time, while SRS resources from different SRS resource sets can be sent simultaneously. In this case, these SRS resource sets must have the same attributes and belong to the same group. SRS resource sets in different groups may not meet these rules.

[0077] 5. Exemplary methods based on the disclosed technology

[0078] The use of beam management to improve throughput in next-generation cellular networks is illustrated in the following examples, which describe various implementation methods.

[0079] Example 1. The disclosed technology can establish relationships between RS and / or corresponding RS feedback for beam management based on RS configuration fields.

[0080] (a) RS includes at least one of SRS, CSI-RS, SSB or TRS.

[0081] (b) The relationship between RSs refers to at least one of the following relationships: RS resource, RS resource set, or RSresourceConfig.

[0082] (c) The configuration domain refers to a combination of one or more of the following parameters: BWP, CC, time domain type (periodic, nonperiodic, semi-permanent), whether to configure spatial parameters, configuration of repeating parameter values ​​(on / off), and the type of RS contained in the spatial parameters.

[0083] Example 2. Based on Example 1, a correspondence between reference signals for beam management can be established in different configuration domains.

[0084] Example 3. Based on Example 1, a correspondence can be established between RSs used for beam management in different CSI report configurations.

[0085] Example 4. Depending on Example 2 or 3, the values ​​of CC or BWP in different configuration fields or different report configurations may differ.

[0086] Example 5. Based on Example 3, add one or more new reporting parameters to each CSI report configuration to indicate the correspondence between the corresponding RS in the current CSI report configuration and the corresponding RS in the added CSI report configuration.

[0087] Example 6. Based on any of Examples 2-5, RS refers to the reference signal corresponding to CRI / SSBRI.

[0088] Example 7. Based on Example 5, the newly added parameters may contain CC or BWP information.

[0089] Example 8. Based on Example 1, the configuration domain parameters will be based on SRS resource sets. SRS resource sets are grouped, and the grouping satisfies the requirements of the SRS resource sets within that group. Different SRS resources within each resource set cannot be sent simultaneously. SRS resources from different SRS resource sets can be sent simultaneously, and only one SRS resource can be sent from each SRS resource set at a time.

[0090] Example 9. Based on Example 2 or Example 4, determine the correspondence based on the ID of the resource or resource set.

[0091] Example 10. Based on Example 2 or Example 4, use Radio Resource Control (RRC) signaling or Medium Access Control (MAC) signaling to configure the correspondence.

[0092] The examples above can be incorporated into the context of the methods described below (e.g., methods 400, 500, and 600).

[0093] Figure 4 A flowchart of an exemplary method for wireless communication is shown. Method 400 includes, at step 410, transmitting data through at least one transmission link configured based on a mapping between two reference signals, wherein the two reference signals are configured with a subset of one or more network parameters that are different.

[0094] Figure 5 A flowchart of another exemplary method for wireless communication is shown. Method 500 includes, at step 510, transmitting a mapping between two reference signals, wherein the two reference signals are configured with a subset of one or more network parameters that are different.

[0095] In some embodiments, method 500 may further include the step of receiving data via at least one transmission link configured based on a mapping.

[0096] Methods 400 and 500 may further include each of two reference signals, which include a sounding reference signal (SRS), a channel state information reference signal (CSI-RS), or a synchronization signal block (SSB, or synchronization / PBCH block), and one or more network parameters, which include values ​​for bandwidth portion (BWP), component carrier (CC), time-domain communication type, spatial parameter, or repetition parameter.

[0097] In some embodiments, the mapping in methods 400 and 500 is between a first CSI-RS resource or SSB and a second CSI-RS resource or SSB, wherein the first CSI-RS and the second CSI-RS resource or SSB are in different CCs or BWPs, and the mapping specifies whether multiple CSI-RS resources or SSBs corresponding to different CCs and BWPs can be received simultaneously.

[0098] In some embodiments, the mapping in methods 400 and 500 is between a first CSI-RS resource or SSB and a second CSI-RS resource or SSB, wherein the first CSI-RS and the second CSI-RS resource or SSB are linked to different CSI reporting configurations, and the mapping specifies whether multiple CSI-RS resources or SSBs corresponding to different CSI reporting configurations can be received simultaneously. In the example, the CSI reporting configurations are linked to different CCs or BWPs.

[0099] In some embodiments, the mapping between the first CSI-RS resource or SSB and the second CSI-RS resource or SSB corresponds to CRI (CSI-RS resource indicator) or SSBRI (SS / PBCH block resource indicator).

[0100] In some embodiments, the new parameter may include (i) an index of the CC or an index of the BWP, and (ii) an identifier of the CSI reporting configuration configured within the CSI reporting configuration, wherein the mapping is between a first CSI-RS resource or SSB linked to the CSI reporting configuration and a second CSI-RS resource or SSB linked to the new parameter.

[0101] In some embodiments, the mapping in methods 400 and 500 is between a first SRS resource and a second SRS resource, and the mapping specifies whether multiple SRS resources corresponding to different subsets of one or more network parameters can be transmitted simultaneously. In an example, the mapping may be based on the identifier of the SRS resource or the identifier of a resource set having different subsets of one or more network parameters. In another example, the mapping may be configured using radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0102] In some embodiments, the mapping in methods 400 and 500 specifies whether multiple reference signals are associated with one or more of the same spatial transmission filter, the same spatial reception filter, the same antenna port, or the same beam.

[0103] In some embodiments, the transmission link in methods 400 and 500 includes a directional transmission link, and the method is part of a beam management implementation.

[0104] Figure 6 A flowchart of yet another exemplary method for wireless communication is shown. Method 600 includes, at step 610, dividing a plurality of SRS (Sound Reference Signal) resource sets into a plurality of groups based on network parameters of SRS resources or SRS resource sets. In some embodiments, the network parameters include one or more values ​​of time-domain communication type, component carrier (CC), bandwidth portion (BWP), spatially related information, and repetition parameter.

[0105] Method 600 includes, at step 620, transmitting only one SRS resource in each of a plurality of SRS resource sets at the same time within one of a plurality of groups. In some embodiments, SRS resources in different SRS resource sets may be transmitted simultaneously.

[0106] In some embodiments, all SRS resource sets with the same values ​​of network parameters are grouped into the same group of multiple groups.

[0107] In some embodiments, the time-domain communication type for each SRS resource in the first, second, and third groups of the multiple groups is semi-permanent, periodic, and aperiodic, respectively.

[0108] In some embodiments, all SRS resources in the first group include spatially related information, while all SRS resources in the second group exclude spatially related information. In one example, the spatially related information includes the type of reference signal, and the first group is divided into multiple subgroups based on the type of reference signal. In another example, the type of reference signal is one of SRS, Channel State Information Reference Signal (CSI-RS), or Synchronization Signal Block (SSB, or Synchronization / PBCH Block).

[0109] 6. Example implementations of the disclosed technology

[0110] Figure 7This is a block diagram representation of a portion of an apparatus according to some embodiments of the present disclosure. Apparatus 705, such as a base station or wireless device (or UE), may include processor electronics 710, such as a microprocessor, which implements one or more technologies presented in this document, including but not limited to methods 400, 500, and 600. Apparatus 705 may include transceiver electronics 715 for transmitting and / or receiving wireless signals via one or more communication interfaces, such as one or more antennas 720. Apparatus 705 may include other communication interfaces for transmitting and receiving data. Apparatus 705 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some implementations, processor electronics 710 may include at least a portion of transceiver electronics 715. In some embodiments, at least some of the disclosed technologies, modules, or functions are implemented using apparatus 705.

[0111] This specification and accompanying drawings are to be considered exemplary only, where exemplary means example and, unless otherwise stated, does not imply an ideal or preferred embodiment. As used herein, "or" is intended to include "and / or" unless the context clearly indicates otherwise.

[0112] Some embodiments described herein are described in the general context of methods or processes that may be implemented in one embodiment by a computer program product contained in a computer-readable medium, including computer-executable instructions such as program code that are executed by a computer in a networked environment. The computer-readable medium may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), optical disc (CD), digital versatile optical disc (DVD), etc. Therefore, the computer-readable medium may include non-transitory storage media. Typically, program modules may include routines, programs, objects, components, data structures, etc., that perform a particular task or implement a particular abstract data type. Computer or processor-executable instructions, associated data structures, and program modules represent examples of program code for performing the method steps disclosed herein. A particular sequence of such executable instructions or associated data structures represents examples of corresponding actions for implementing the functionality described in such steps or processes.

[0113] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuitry, software, or a combination thereof. For example, hardware circuitry implementations may include discrete analog and / or digital components, which may be integrated, for example, as part of a printed circuit board. Alternatively, or additionally, the disclosed components or modules may be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate arrays (FPGAs). Some implementations may additionally or alternatively include digital signal processors (DSPs), which are dedicated microprocessors with an architecture optimized for the operational needs of digital signal processing associated with the disclosed functions of this application. Similarly, various components or sub-components within each module may be implemented using software, hardware, or firmware. Interconnectivity between modules and / or components within modules may be provided using any connection methods and media known in the art, including but not limited to communication over the Internet, wired, or wireless networks using appropriate protocols.

[0114] While this document contains numerous details, these should not be construed as limiting the scope of the claimed invention or any potentially claimed content, but rather as descriptions of features specific to particular embodiments. Certain features described herein may also be implemented in combination in a single embodiment within the context of an individual embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually in multiple embodiments or in any suitable sub-combination. Furthermore, although the foregoing features may be described as functioning in certain combinations, or even originally claimed in this way, in some cases one or more features from said combinations may be removed from that combination, and said combinations may involve sub-combinations or variations thereof. Similarly, although operations are described in a specific order in the drawings, this should not be construed as requiring these operations to be performed in the specific order or sequence shown, or requiring all shown operations to obtain the desired result.

[0115] Only some implementations and examples are described, and other implementations, enhancements and modifications can be made based on what is described and illustrated in this disclosure.

Claims

1. A method for wireless communication, comprising: The user equipment determines the correspondence between a first SRS resource and a second SRS resource that have the same probe reference signal (SRS) resource identifier, wherein the first SRS resource and the second SRS resource are configured with different component carriers belonging to a set of component carriers; and The same spatial relationship parameters are applied to the first SRS resource and the second SRS resource that have the same SRS resource identifier for the set of component carriers.

2. The method according to claim 1, wherein, The spatial relationship parameter indicates the type of reference signal, which is one of SRS, Channel State Information Reference Signal (CSI-RS), and Synchronization Signal Block.

3. The method according to claim 1, wherein, The time-domain communication type of the first SRS resource or the second SRS resource is semi-permanent or aperiodic.

4. The method according to claim 1, further comprising: The user equipment receives configuration information from the base station for the first SRS resource or the second SRS resource, wherein the configuration information includes parameters indicating the identifier of the SRS resource.

5. A method for wireless communication, comprising: The base station is configured with a first detection reference signal (SRS) resource and a second SRS resource having different component carriers, wherein the different component carriers belong to a group of component carriers; as well as The base station configures the first SRS resource and the second SRS resource with the same SRS resource identifier so that the same spatial relationship parameters are applied to the first SRS resource and the second SRS resource with the same SRS resource identifier for the set of component carriers.

6. The method according to claim 5, wherein, The spatial relationship parameter indicates the type of reference signal, which is one of SRS, Channel State Information Reference Signal (CSI-RS), and Synchronization Signal Block.

7. The method according to claim 5, wherein, The time-domain communication type of the first SRS resource or the second SRS resource is semi-permanent or aperiodic.

8. A wireless communication device, comprising a processor configured to: Determine the correspondence between a first SRS resource and a second SRS resource that have the same SRS resource identifier, wherein, The first SRS resource and the second SRS resource are configured with different component carriers belonging to a set of component carriers; and The same spatial relationship parameters are applied to the first SRS resource and the second SRS resource that have the same SRS resource identifier for the set of component carriers.

9. The device according to claim 8, wherein, The spatial relationship parameter indicates the type of reference signal, which is one of SRS, Channel State Information Reference Signal (CSI-RS), and Synchronization Signal Block.

10. The device according to claim 8, wherein, The time-domain communication type of the first SRS resource or the second SRS resource is semi-persistent or aperiodic.

11. The device according to claim 8, wherein, The processor is also configured to: The system receives configuration information from the base station for the first SRS resource or the second SRS resource, wherein the configuration information includes parameters indicating the identifier of the SRS resource.

12. A device for wireless communication, comprising a processor configured to: Configure a first sounding reference signal (SRS) resource and a second SRS resource with different component carriers, wherein the different component carriers belong to a group of component carriers; and Configure the first SRS resource and the second SRS resource with the same SRS resource identifier so that the same spatial relationship parameters are applied to the first SRS resource and the second SRS resource with the same SRS resource identifier for the set of component carriers.

13. The device according to claim 12, wherein, The spatial relationship parameter indicates the type of reference signal, which is one of SRS, Channel State Information Reference Signal (CSI-RS), and Synchronization Signal Block.

14. The device according to claim 12, wherein, The time-domain communication type of the first SRS resource or the second SRS resource is semi-permanent or aperiodic.

15. A computer storage medium comprising computer program code stored thereon, the code, when executed by a processor, causing the processor to perform the method according to any one of claims 1 to 7.

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