Method and apparatus for selecting resources

Abstract

The application provides a resource selection method and device. The resource selection method comprises the following steps: a user equipment (UE) receives a transmission configuration indication (TCI) state of a downlink configured by a network side device; the TCI state comprises at least a plurality of quasi co-location (QCL) information, and the plurality of QCL information comprises at least a reference signal (RS) and a QCL type corresponding to the RS; and the UE selects an RS for radio link monitoring (RLM) according to the RS and / or the QCL type in the plurality of QCL information. Through the application, the problem of a large amount of measurement complexity and power consumption caused by the UE detecting all RSs in a plurality of TCI states due to the UE's inability to select a suitable RS for RLM is solved, and the effect of reducing the measurement overhead of the UE is achieved.

Description

Technical Field

[0001] This invention relates to the field of communications, and more specifically, to a method and apparatus for selecting resources. Background Technology

[0002] With the continuous advancement of radio technology, a wide variety of radio services have emerged. However, the spectrum resources on which radio services rely are limited. Faced with the ever-increasing demand for bandwidth, the spectrum resources between 300MHz and 3GHz, which are mainly used in traditional commercial communications, are in a state of extreme tension and can no longer meet the needs of future wireless communication.

[0003] In future wireless communications, support will be extended to carrier frequencies higher than those used in fourth-generation (4G) communication systems, such as 28GHz and 45GHz, with a potential operating frequency band reaching 100GHz. In high-frequency bands (above 6GHz), due to significant electromagnetic wave attenuation, beamforming methods are typically used to combat signal attenuation and increase transmission distance. Therefore, signals are usually transmitted or received in the form of beams. Typically, the network side configures one or more high-quality beams for the UE for communication. Furthermore, because the signal quality of the beams constantly changes, the configured beams must also be continuously adjusted to ensure that the signal quality of the beams used by the UE consistently meets communication requirements.

[0004] To ensure normal communication, user equipment (UE) needs to periodically check the quality of the current link. The physical layer periodically sends In-sync (IS) or Out-of-sync (OOS) indications to higher layers based on the measurement results, so that higher layers know the current state of the UE. Typically, the network side configures a specific set of reference signals for the UE to measure signal quality. When the network side does not configure specific reference signals, the UE uses the reference signal (RS) indicated in the Transmission Configuration Indicator State (TCI state) of the Physical Downlink Control Channel (PDCCH) configured by the network side for radio link monitoring (RLM). A maximum of two RSs can be indicated in the TCI state. Since the UE can activate multiple TCI states simultaneously, if the UE checks all RSs in these multiple TCI states, it will introduce significant measurement complexity and power consumption issues. Furthermore, some RSs are not suitable for RLM. Therefore, how to select the appropriate RS for RLM is a problem that urgently needs to be solved. Summary of the Invention

[0005] This invention provides a resource selection method and apparatus to at least solve the problem of high measurement complexity and power consumption caused by the UE's inability to select a suitable RS for RLM and thus having to detect all RSs in multiple TCI states in related technologies.

[0006] According to an embodiment of the present invention, a resource selection method is provided, comprising: a user equipment (UE) receiving a transmission configuration indication (TCI) state for a downlink configured by a network-side device; wherein the TCI state includes at least a plurality of quasi-co-location (QCL) information, and the plurality of QCL information includes at least a reference signal (RS) and a QCL type corresponding to the RS; the UE selects an RS for performing radio link detection (RLM) based on the RS and / or the QCL type in the plurality of QCL information.

[0007] Optionally, the UE receives multiple bandwidth portion BWPs configured by the network-side device, wherein the multiple bandwidth portion BWPs are obtained by the network-side device by dividing the system bandwidth into multiple parts; the UE receives signals sent by the network-side device or sends signals to the network-side device on one or more BWPs activated among the multiple BWPs configured by the network-side device.

[0008] Optionally, the UE selects one of the multiple QCL information located within the active BWP as the RS for RLM; or, the UE selects multiple RS from the multiple QCL information located within the active BWP as candidate RSs, wherein the candidate RSs have the capability to perform RLM.

[0009] Optionally, when the UE selects multiple RSs located within the active BWPs from multiple QCL information as candidate RSs, the UE configures the priority order of the active BWPs corresponding to the multiple candidate RSs, or the UE obtains the priority order of the active BWPs configured by the network-side device, or the UE obtains the priority order of the active BWPs specified by the protocol; the UE selects the RS corresponding to the active BWP with the highest priority according to the configured priority order of the active BWPs for RLM.

[0010] Optionally, the UE configures the priority order of the QCL types, or the UE obtains the priority order of the QCL types configured by the network-side device, or the UE obtains the priority order of the QCL types specified by the protocol; the UE selects the RS corresponding to the QCL type with the highest priority for RLM according to the priority order of the QCL types.

[0011] Optionally, the UE configures the priority order of the RS type corresponding to the RS, or the UE obtains the priority order of the RS type corresponding to the RS configured by the network-side device, or the UE obtains the priority order of the RS type corresponding to the RS specified by the protocol; the UE selects the RS with the highest priority for RLM according to the priority order of the RS type.

[0012] Optionally, the UE configures the combination priority order of the QCL type and the RS type corresponding to the RS, or the UE obtains the combination priority order of the QCL type and the RS type corresponding to the RS configured by the network-side device, or the UE obtains the combination priority order of the QCL type and the RS type corresponding to the RS as specified by the protocol; the UE selects the RS with the highest combination priority for RLM according to the combination priority order.

[0013] Optionally, the RS may be of at least one of the following types: Synchronization Signal / Physical Broadcast Channel Block (SS / PBCH block, or SSB for short), Channel State Information Reference Signal (CSI-RS), or Tracking Signal (TRS).

[0014] The QCL type includes at least one of the following: a first QCL type carrying Doppler shift, Doppler spread, average delay, and delay spread; a second QCL type carrying Doppler shift and Doppler spread; a third QCL type carrying average delay and Doppler shift; and a fourth QCL type carrying spatial Rx parameter.

[0015] Optionally, the downlink includes a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH).

[0016] According to another embodiment of the present invention, a resource selection apparatus is provided, comprising: a first receiving module, configured to receive a transmission configuration indication state (TCI) state of a downlink configured by a network-side device; wherein the TCI state includes at least a plurality of QCL information, and the plurality of QCL information includes at least a reference signal (RS) and a QCL type corresponding to the RS; and a selection module, configured to select an RS for performing radio link detection (RLM) based on the RS and / or the QCL type in the plurality of QCL information.

[0017] Optionally, the apparatus further includes: a second receiving module, configured to receive a plurality of bandwidth portions (BWPs) configured by the network-side device, wherein the plurality of bandwidth portions (BWPs) are obtained by the network-side device by dividing the system bandwidth into multiple parts; and a transmitting module, configured to receive signals sent by the network-side device or send signals to the network-side device on one or more active BWPs among the plurality of BWPs configured by the network-side device.

[0018] Optionally, the selection module is further configured to: select one of the multiple QCL information located within the active BWP for RLM, or select multiple of the multiple QCL information located within the active BWP as candidate RS, wherein the candidate RS has the capability to perform RLM.

[0019] Optionally, when selecting multiple RSs located within the active BWP from multiple QCL information as candidate RSs, the selection module is further configured to: configure the priority order of the active BWPs corresponding to the multiple candidate RSs, or obtain the priority order of the active BWPs configured by the network-side device, or obtain the priority order of the active BWPs specified by the protocol; and select the RS corresponding to the active BWP with the highest priority according to the priority order of the active BWPs for RLM.

[0020] Optionally, the selection module is further configured to: configure the priority order of the QCL types, or obtain the priority order of the QCL types configured by the network-side device, or obtain the priority order of the QCL types specified by the protocol; and select the RS corresponding to the QCL type with the highest priority for RLM according to the priority order of the QCL types.

[0021] Optionally, the selection module is further configured to: configure the priority order of the RS type corresponding to the RS, or obtain the priority order of the RS type corresponding to the RS configured by the network-side device, or obtain the priority order of the RS type corresponding to the RS specified by the protocol; and select the RS with the highest priority for RLM according to the priority order of the RS type.

[0022] Optionally, the selection module is further configured to: configure the combination priority order of the QCL type and the RS type corresponding to the RS, or, obtain the combination priority order of the QCL type and the RS type corresponding to the RS configured by the network-side device, or, obtain the combination priority order of the QCL type and the RS type corresponding to the RS as specified by the protocol; and select the RS with the highest combination priority for RLM according to the combination priority order in the combination.

[0023] According to yet another embodiment of the present invention, a storage medium is also provided, wherein a computer program is stored therein, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0024] According to yet another embodiment of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0025] This invention identifies each RS and its corresponding QCL type among multiple QCL information in the TCI state sent from the network-side device, thereby selecting an RS suitable for RLM. Therefore, it solves the problem of high measurement complexity and power consumption caused by the UE detecting all RSs in multiple TCI states due to the inability to select a suitable RS for RLM in related technologies, thus reducing the UE's measurement overhead. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0027] Figure 1 This is a hardware structure block diagram of a mobile terminal for a resource selection method according to an embodiment of the present invention.

[0028] Figure 2 This is a flowchart of a resource selection method according to an embodiment of the present invention;

[0029] Figure 3 This is a structural block diagram of a resource selection device according to an embodiment of the present invention;

[0030] Figure 4 This is a structural block diagram of another resource selection device according to an embodiment of the present invention. Detailed Implementation

[0031] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0033] Example 1

[0034] The method embodiment provided in Embodiment 1 of this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking its operation on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a resource selection method according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal 10 may include one or more ( Figure 1Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. Optionally, the mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal 10 may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0035] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the resource selection method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0036] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0037] This embodiment provides a method for selecting resources running on the aforementioned mobile terminal. Figure 2 This is a flowchart of a resource selection method according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0038] Step S202, the user equipment (UE) receives the transmission configuration indication state (TCI state) of the downlink configured by the network-side device; wherein, the TCI state includes at least: multiple QCL information, and the multiple QCL information includes at least: a reference signal RS and the QCL type corresponding to the RS;

[0039] Step S204: The UE selects the RS for performing Radio Link Detection (RLM) based on the RS and / or the QCL type among the multiple QCL information.

[0040] Optionally, when the TCI state of the UE's PDCCH contains multiple QCL information, that is, multiple RS, the UE selects one of the RSs for RLM.

[0041] Optionally, the multiple QCL information may also include a TCI state ID for identifying the TCI state.

[0042] Optionally, in mobile communication, a UE in connected state needs to periodically detect and evaluate the downlink signal quality. The UE's physical layer sends an IS (Indicator Signal) or OOS (Out of Service) indication to the higher layers based on the evaluation results. The network side can configure multiple RS (Real Signals) for UE detection. The UE measures, filters, and evaluates these RSs respectively. When the signal quality of all RSs is less than a threshold, the physical layer reports an OOS indication to the higher layers; when the signal quality of at least one RS is greater than a threshold, the physical layer reports an IS indication to the higher layers. This process is also called radio link detection.

[0043] Optionally, the RS may be of at least one of the following types: Synchronization Signal / Physical Broadcast Channel Block (SS / PBCH block), Channel State Information Reference Signal (CSI-RS), or Tracking Signal (TRS).

[0044] Optionally, the QCL type includes at least one of the following: a first QCL type carrying Doppler shift, Doppler spread, average delay, and delay spread; a second QCL type carrying Doppler shift and Doppler spread; a third QCL type carrying average delay and Doppler shift; and a fourth QCL type carrying spatial Rx parameter.

[0045] It should be noted that if two RSs have a QCL relationship and the QCL type is the first QCL type, then for the UE's reception, these two RSs have the same or similar Doppler shift, Doppler spread, average delay, and delay spread. In other words, the UE detects that the Doppler shift, Doppler spread, average delay, and delay spread of these two RSs are the same or similar. If two RSs have a QCL relationship and the QCL type is the second QCL type, then for the UE's reception, these two RSs have the same or similar Doppler shift and Doppler spread. In other words, the UE detects that the Doppler shift and Doppler spread of these two RSs are the same or similar. If two RSs have a QCL relationship and the QCL type is the third QCL type, then for the UE's reception, these two RSs have the same or similar average delay and Doppler shift. In other words, the UE detects that the average delay and Doppler shift of these two RSs are the same or similar. If two RSs have a QCL relationship and the QCL type is the fourth QCL type, then from the UE's perspective, the UE detects that the two RSs have the same or similar spatial orientation, or that the transmission beam directions of the two RSs are the same or similar. If two RSs have a QCL relationship and the QCL type is multiple of the above QCL types, then from the UE's perspective, the two RSs simultaneously satisfy the characteristics of these multiple QCL types.

[0046] Optionally, the UE receives multiple bandwidth parts (BWPs) configured by the network-side device, wherein the multiple bandwidth parts (BWPs) are obtained by the network-side device by dividing the system bandwidth into multiple parts; the UE receives signals sent by the network-side device or sends signals to the network-side device on one or more BWPs activated among the multiple BWPs configured by the network-side device.

[0047] It should be noted that, to better facilitate the UE's reception and transmission of signals from the network side, the network side can typically divide the system bandwidth into multiple parts, each called a BWP. The network side can configure multiple BWPs for the UE simultaneously and activate one or more of them. The UE only receives signals transmitted by the network side on the activated downlink BWP and transmits signals on the activated uplink BWP.

[0048] Optionally, the UE selects one of the multiple QCL information located within the active BWP as the RS for RLM; or, the UE selects multiple RS from the multiple QCL information located within the active BWP as candidate RSs, wherein the candidate RSs have the capability to perform RLM.

[0049] Specifically, when the number of signals (e.g., RS) transmitted and received between the network-side equipment and the user equipment is small, to avoid resource waste, the network-side equipment may allocate only one active BWP to the UE for signal transmission and reception. Therefore, when the UE receives the QCL information included in the TCIstate by the network-side equipment, the UE will first check whether the BWP corresponding to the RS in the QCL information is active. If active, it means that the RS can transmit and receive between the network-side equipment and the user equipment, so it is necessary to perform RLM. Therefore, the UE will select the RS corresponding to the active BWP for RLM.

[0050] Specifically, the network-side device may allocate only multiple active BWPs to the UE for RS transmission and reception. When the UE receives QCL information included in the TCI state by the network-side device, the UE first checks whether the BWP corresponding to the RS in the QCL information is active. If active, it means that the RS can transmit and receive between the network-side device and the user equipment, so RLM is necessary. However, considering the measurement complexity and power consumption issues that arise during the detection of multiple RSs, only one RS can undergo RLM. Therefore, the UE will consider the RS corresponding to the active BWP in the multiple QCL information as candidate RSs, which need to be selected through other conditions.

[0051] Optionally, when the UE selects multiple RSs located within the active BWP from multiple QCL information as candidate RSs, the UE selects the RS for performing the RLM based on the information of the RSs in the multiple QCL information and / or the QCL type, further comprising: the UE configuring the priority order of the active BWPs corresponding to the multiple candidate RSs; or, the UE obtaining the priority order of the active BWPs configured by the network-side device; or, the UE obtaining the priority order of the active BWPs specified by the protocol; and the UE selecting the RS corresponding to the active BWP with the highest priority based on the priority order of the active BWPs for RLM.

[0052] Specifically, the priority order of BWPs specified in the protocol is as follows: BWP1 (the first activated BWP) > BWP2 (the second activated BWP) > BWP3 (the third activated BWP) > BWP4 (the fourth activated BWP) > ... > BWPn (the nth activated BWP, where n is a positive integer).

[0053] Optionally, the UE configures the priority order of the QCL types, or the UE obtains the priority order of the QCL types configured by the network-side device, or the UE obtains the priority order of the QCL types specified by the protocol; the UE selects the RS corresponding to the QCL type with the highest priority for RLM according to the priority order of the QCL types.

[0054] Specifically, the priority order of QCL types specified in the protocol is: fourth QCL type > third QCL type > second QCL type > first QCL type.

[0055] Optionally, the UE configures the priority order of the RS type corresponding to the RS, or the UE obtains the priority order of the RS type corresponding to the RS configured by the network-side device, or the UE obtains the priority order of the RS type corresponding to the RS specified by the protocol; the UE selects the RS with the highest priority for RLM according to the priority order of the RS type.

[0056] Specifically, the priority order of RS types specified in the protocol is: CSI-RS > SSB > TRS.

[0057] The UE configures the combination priority order of the QCL type and the RS type corresponding to the RS, or the UE obtains the combination priority order of the QCL type and the RS type corresponding to the RS configured by the network-side device, or the UE obtains the combination priority order of the QCL type and the RS type corresponding to the RS specified by the protocol; the UE selects the RS with the highest combination priority for RLM according to the combination priority order in the combination.

[0058] Specifically, the combination priority specified in the agreement can be determined by the order shown in Table 1 below. It should be noted that the priority is arranged from 0 to 11, from high to low.

[0059] Table 1

[0060]

[0061] It should be noted that, in order to facilitate understanding of the above content in this embodiment, the following scenarios are also provided in this embodiment to facilitate understanding of the technical solutions described in this embodiment:

[0062] It should be noted that, for ease of illustration, the following scenarios assume that the UE uses the priority order specified by the protocol for sorting. Of course, the priority order configured by the UE or the priority order configured by the network-side device is also within the scope of protection of this embodiment, and will not be elaborated upon here.

[0063] Scene 1

[0064] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: a TCI state ID and two QCL information entries. The first QCL entry includes RS1 and the first QCL type. The second QCL entry includes RS2 and the second QCL type.

[0065] The UE determines the priority of the QCL type in the two received QCL messages. It then determines that the priority of the QCL type in the second QCL message is higher than the priority of the QCL type in the first QCL message. Therefore, the UE selects the RS included in the second QCL message for RLM.

[0066] Scene 2

[0067] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: TCI state ID and three QCL information entries. The first QCL information includes RS1, the second QCL type, and the fourth QCL type. The second QCL information includes RS2 and the third QCL type. The third QCL information includes RS3, the first QCL type, and the second QCL type.

[0068] The UE determines the priority of the QCL types in the three received QCL messages. It then determines that the first QCL message includes the highest priority fourth QCL type, while the priority of the third QCL type included in the second QCL message, and the priority of the first and second QCL types included in the third QCL message, are all lower than that of the fourth QCL type in the first QCL message. Therefore, the UE selects the RS included in the first QCL message for RLM.

[0069] Scene 3

[0070] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: a TCI state ID and two QCL information entries. The first QCL entry includes the SSB and the second QCL type. The second QCL entry includes the CSI-RS and the second QCL type.

[0071] The UE determines the RS type in the two received QCL messages. It then determines that the priority of the RS type CSI-RS in the second QCL message is higher than the priority of the RS type SSB in the first QCL message. Therefore, the UE selects the RS included in the second QCL message for RLM.

[0072] Scene 4

[0073] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: a TCI state ID and two QCL information entries. The first QCL entry includes the SSB and the second QCL type. The second QCL entry includes the CSI-RS and the fourth QCL type.

[0074] The UE considers both RS type and QCL type when selecting RS for RLM. By referring to the combination priority order in Table 1 above, the UE determines that the combination of RS type and QCL type in the second QCL information has the highest priority, while the combination of RS type and QCL type in the first QCL information has a lower priority than the combination of the second QCL information. Therefore, the UE selects the RS included in the second QCL information for RLM.

[0075] Scene 5

[0076] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: a TCI state ID and two QCL information entries. The first QCL entry includes the TRS and the first QCL type. The second QCL entry includes CSI-RS1 and the third QCL type.

[0077] The UE considers both RS type and QCL type when selecting RS for RLM. The UE determines the priority of the combination of RS type and QCL type in the first QCL information by referring to the priority order in Table 1 above. Therefore, the UE selects the first QCL information instead of performing RLM based on the RS included in the second QCL information.

[0078] Scene 6

[0079] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: TCI state ID and multiple QCL information. The UE receives only one activated BWP from the BWPs allocated by the network-side device; the others are inactive. RS1, included in the first QCL information, is located within the activated BWP. RS2, included in the second QCL information, is located within the deactivated BWP.

[0080] The UE determines, by obtaining information from multiple BWPs and multiple QCLs distributed by the network-side device, that only RS1 in the first QCL information is within the active BWP. Therefore, the UE selects the only RS1 located in the active BWP for RLM.

[0081] Scene 7

[0082] The UE receives the TCI state of the PDCCH configured by the network-side device. This TCI state includes: TCI state ID and three QCL information entries. The UE receives the BWPs allocated by the network-side device, of which only one BWP is active; the others are inactive. In the first QCL information, RS1 and RS2 of the first QCL information are within the active BWP. The third QCL information includes RS3 within the deactivated BWP. Simultaneously, the first QCL information includes RS1 and the first QCL type, while the second QCL information includes RS2 and the second QCL type.

[0083] The UE determines, by obtaining information from multiple BWPs and QCLs distributed by the network-side device, that RS1 in the first QCL and RS2 in the second QCL are both within an active BWP. It cannot determine which RS in the QCL is used for RLM. Therefore, the UE uses RS1 in the first QCL and RS2 in the second QCL as candidate RSs for further screening.

[0084] At this point, the UE needs to determine the QCL type in the two received QCL messages. It then determines that the priority of the second QCL type in the second QCL message is higher than the priority of the first QCL type in the first QCL message. Therefore, the UE selects the RS included in the second QCL message for RLM.

[0085] Scene 8

[0086] The UE receives the TCI state of the PDSCH configured by the network-side device. This TCI state includes: TCI state ID and four QCL information entries. The UE receives the BWPs allocated by the network-side device, in which BWP1, BWP2, and BWP3 are activated, while the other BWPs are not activated.

[0087] The first QCL information includes: the CSI-RS located in the active BWP3 and the first QCL type. The second QCL information includes: the TRS located in the active BWP1 and the second QCL type. The third QCL information includes: the SSB located in the active BWP1 and the third QCL type. The fourth QCL information includes: the CSI-RS located in the deactivated BWP and the fourth QCL type.

[0088] The UE determines the priority of the active BWP corresponding to the TRS in the second QCL and the SSB in the third QCL by obtaining information from multiple BWPs and QCLs distributed by the network-side equipment. This priority is higher than that of the active BWP3 corresponding to the CSI-RS in the first QCL. Meanwhile, the CSI-RS in the fourth QCL is located in the deactivated BWP. Therefore, the UE uses the TRS in the second QCL and the SSB in the third QCL as candidate RSs for RLM.

[0089] RS1 in the first QCL message and RS2 in the second QCL message are both within the active BWP. It cannot be determined which RS in the QCL message is used for RLM. Therefore, the UE uses RS1 in the first QCL message and RS2 in the second QCL message as candidate RSs for RLM for further screening.

[0090] The UE determines that the combination of RS type and QCL type in the second QCL information has a higher priority than the combination of RS type and QCL type in the third QCL information by referring to the priority order in Table 1 above. Therefore, the UE selects the second QCL information instead of performing RLM based on the RS included in the third QCL information.

[0091] It should be noted that the above specific examples are not exhaustive. Any alternative solutions based on the concept of this invention are within the scope of protection of this embodiment.

[0092] By following the steps above, the problem of high measurement complexity and power consumption caused by the UE's inability to select a suitable RS for RLM and thus having to detect all RSs in multiple TCI states is solved, thereby reducing the UE's measurement overhead.

[0093] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0094] Example 2

[0095] This embodiment also provides a resource selection device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0096] Figure 3 This is a structural block diagram of a resource selection device according to an embodiment of the present invention, such as... Figure 3 As shown, the device includes a first receiving module 32 and a selection module 34.

[0097] The first receiving module 32 is used to receive the transmission configuration indication state (TCIstate) of the downlink configured by the network-side device; wherein the TCIstate includes at least a plurality of QCL information, and the plurality of QCL information includes at least a reference signal RS and the QCL type corresponding to the RS;

[0098] Selection module 34 is used to select an RS for performing Radio Link Detection RLM based on the RS and / or the QCL type among multiple QCL information.

[0099] Figure 4 This is a structural block diagram of another resource selection device according to an embodiment of the present invention, such as... Figure 4 As shown, the device includes Figure 3 In addition to all the modules shown, it also includes:

[0100] The second receiving module 42 is used to receive multiple bandwidth portions (BWPs) configured by the network-side device, wherein the multiple bandwidth portions (BWPs) are obtained by the network-side device by dividing the system bandwidth into multiple parts;

[0101] The transmission module 44 is used to receive signals sent by the network-side device or send signals to the network-side device on one or more BWPs that are active among the plurality of BWPs configured on the network-side device.

[0102] Optionally, the selection module 34 is further configured to: select one of the multiple QCL information located within the active BWP for RLM, or select multiple of the multiple QCL information located within the active BWP as candidate RS, wherein the candidate RS has the capability to perform RLM.

[0103] Optionally, when selecting multiple RSs located within the active BWP from multiple QCL information as candidate RSs, the selection module 34 is further configured to: configure the priority order of the active BWPs corresponding to the multiple candidate RSs, or obtain the priority order of the active BWPs configured by the network-side device, or obtain the priority order of the active BWPs specified by the protocol; and select the RS corresponding to the active BWP with the highest priority according to the priority order of the active BWPs for RLM.

[0104] Optionally, the selection module is further configured to: configure the priority order of the QCL types, or obtain the priority order of the QCL types configured by the network-side device, or obtain the priority order of the QCL types specified by the protocol; and select the RS corresponding to the QCL type with the highest priority for RLM according to the priority order of the QCL types.

[0105] Optionally, the selection module 34 is further configured to: configure the priority order of the RS type corresponding to the RS, or obtain the priority order of the RS type corresponding to the RS configured by the network-side device, or obtain the priority order of the RS type corresponding to the RS specified by the protocol; and select the RS with the highest priority for RLM according to the priority order of the RS type.

[0106] Optionally, the selection module 34 is further configured to: configure the combination priority order of the QCL type and the RS type corresponding to the RS, or, obtain the combination priority order of the QCL type and the RS type corresponding to the RS configured by the network-side device, or, obtain the combination priority order of the QCL type and the RS type corresponding to the RS as specified by the protocol; and select the RS with the highest combination priority for RLM according to the combination priority order.

[0107] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0108] Example 3

[0109] Embodiments of the present invention also provide a storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0110] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0111] S1, the user equipment (UE) receives the downlink transmission configuration indication state (TCIstate) configured by the network-side device; wherein, the TCIstate includes at least: multiple QCL information, and the multiple QCL information includes at least: a reference signal RS and the QCL type corresponding to the RS;

[0112] S2, the UE selects the RS for performing Radio Link Detection (RLM) based on the RS and / or the QCL type among the multiple QCL information.

[0113] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0114] Example 4

[0115] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0116] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0117] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0118] S1, the user equipment (UE) receives the downlink transmission configuration indication state (TCIstate) configured by the network-side device; wherein, the TCIstate includes at least: multiple QCL information, and the multiple QCL information includes at least: a reference signal RS and the QCL type corresponding to the RS;

[0119] S2, the UE selects the RS for performing Radio Link Detection (RLM) based on the RS and / or the QCL type among the multiple QCL information.

[0120] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0121] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0122] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for selecting resources, characterized in that, include: User equipment (UE) receives a transmission configuration indication (TCI) state for the downlink, wherein the TCI state includes quasi-co-located QCL information, and the information includes multiple correspondences, each of the multiple correspondences being a correspondence between a corresponding RS among multiple reference signals (RS) and a corresponding QCL type among multiple QCL types; The UE selects the RS corresponding to the QCL type with the highest priority according to the priority order of the multiple QCL types; The UE uses the selected RS for Radio Link Detection (RLM).

2. The method according to claim 1, characterized in that, The step of selecting one of the plurality of RSs also includes: The UE selects an RS located within the active bandwidth portion (BWP), which is indicated in the QCL information.

3. The method according to claim 1, characterized in that, The RS includes at least one of the following: Synchronization signal / physical broadcast channel block (SS / PBCH block) or channel state information reference signal (CSI-RS).

4. The method according to any one of claims 1-3, characterized in that, The QCL types include: The first QCL type carries Doppler shift, Doppler spread, average delay, and delay spread. The second QCL type carries Doppler shift and Doppler spread; The third QCL type carries average delay and Doppler shift; The fourth QCL type carries the Spatial Rx parameter.

5. The method according to any one of claims 1-3, characterized in that, The downlink includes the Physical Downlink Control Channel (PDCCH).

6. An apparatus comprising at least one processor, characterized in that, The processor is configured to: The receiver receives the transmission configuration indication state (TCI) state of the downlink, wherein the TCI state includes quasi-co-located QCL information, and the information includes multiple correspondences, each of the multiple correspondences being the correspondence between a corresponding RS among multiple reference signals RS and a corresponding QCL type among multiple QCL types; The RS corresponding to the highest priority QCL type is selected according to the priority order of the multiple QCL types. The RS is located within the active bandwidth portion (BWP), and the active BWP is indicated in the QCL information. Radio link detection (RLM) is performed based on the RS.

7. The apparatus according to claim 6, characterized in that, The step of selecting one of the plurality of RSs also includes: The device selects the RS located within the active BWP, which is indicated in the QCL information.

8. The apparatus according to claim 6, characterized in that, The RS includes at least one of the following: Synchronization signal / physical broadcast channel block (SS / PBCH block) or channel state information reference signal (CSI-RS).

9. The apparatus according to any one of claims 6-8, characterized in that, The QCL types include: The first QCL type carries Doppler shift, Doppler spread, average delay, and delay spread. The second QCL type carries Doppler shift and Doppler spread; The third QCL type carries average delay and Doppler shift; The fourth QCL type carries the Spatial Rx parameter.

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