CN111106914B

CN111106914B - Method, terminal and storage medium for determining quasi co-location of control resource set

Info

Publication number: CN111106914B
Application number: CN201811341386.7A
Authority: CN
Inventors: 彭淑燕; 孙鹏; 纪子超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2022-06-07
Anticipated expiration: 2038-11-12
Also published as: CN111106914A

Abstract

The invention discloses a method, a device, a mobile terminal and a storage medium for determining the quasi co-location of a control resource set CORESET, wherein the method comprises the following steps: and determining the quasi co-location QCL of the target control resource set CORESET according to the terminal capability and/or the high-level configuration information. The embodiment of the invention can determine the quasi co-location QCL of the control resource set CORESET.

Description

Method, terminal and storage medium for determining quasi co-location of control resource set

Technical Field

The invention relates to the technical field of communication, in particular to a method, a device, a terminal and a storage medium for determining quasi co-location of a control resource set CORESET.

Background

In a mobile communication system, a Radio Resource Control (RRC) may configure a Physical Downlink Shared Channel (PDSCH) Configuration (PDSCH-config) in a Downlink (Downlink) Bandwidth Part (BWP), and configure a list (list) of corresponding Transmission Configuration Indicator (TCI) states (TCI state) in the PDSCH-config, such as TCI-statetodoadmodlist, TCI-statetodeleaselist.

The RRC may also configure Control Resource Set (CORESET) parameters including parameters such as CORESET #0(ControlResourceSetZero) and common CORESET (common CORESET) and other CORESET parameters in addition to both. Wherein, list of TCI state is configured in RRC configuration of other CORESET, such as TCI-StatemePDCCH-ToAddList, TCI-StatemePDCCH-ToReleaseList. The TCI state list in CORESET is a subset of the TCI state list configured for PDSCH-config, such as: tci-StatesPDCCH-ToAddList is a subset of tci-StatesToAddModList of PDSCH-config configuration.

The RRC configures TCI state information. And configuring a QCL in the TCI state, wherein the QCL comprises an RS and a QCL type. And the relation between a demodulation reference signal (DMRS) port for receiving a Physical Downlink Control Channel (PDCCH) and the indicated RS is QCL. Therefore, by indicating the TCI state or directly indicating the QCL, the QCL relationship of the DMRS port of the PDCCH, which is a physical downlink control channel, can be obtained.

The Media Access Control (MAC) Control unit (Control Element, CE) includes TCI status Indication information (MAC CE TCI State Indication) and CORESET Identification (ID) Indication, and the TCI status identification (TCI State ID) in the Indication indicates the TCI State of the CORESET ID. The TCI state ID is applied to TCI-StatemePDCCH-ToAddList and/or TCI-StatemePDCCH-ToReleaseList configured by CORESET. The TCI state of CORESET #0 may be obtained from a table in which the MAC CE directly indicates the PDSCH-config configuration.

In the fifth generation mobile communication technology 5G NR (New Radio), PDSCH-config is BWP-specific (specific) configured, i.e., the TCI state list of each BWP can be configured as a different list, but the CORESET (e.g., CORESET #0, common CORESET) can be shared by different BWPs. If the TCI state of CORESET is indicated by MAC CE, it is uncertain which BWP corresponds to the configured TCI state of PDSCH-config indicated by MAC CE. On the other hand, before the common CORESET configuration, the TCI state list of the BWP-specific PDSCH-config is not configured, and thus TCI-statesdcch-ToAddList and TCI-statesdcch-toreasist cannot be configured in the common CORESET. This will have a negative impact on the stability and system performance of the system.

Disclosure of Invention

In view of the above, the present invention provides a method, an apparatus, a terminal, and a storage medium for determining a quasi-co-location of a control resource set, which are capable of determining a target BWP to which a TCI state ID applies, determining a TCI state of the target control resource set, and obtaining a QCL of the target CORESET, so as to solve a problem that a corresponding target BWP in the TCI state of the CORESET indicated by a MAC CE is uncertain and affects system performance.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, the present invention provides a method for determining quasi co-location of a control resource set, CORESET, the method comprising: and determining the quasi co-location QCL of the target control resource set CORESET according to the terminal capability and/or the high-level configuration information.

Wherein, according to the method of the present invention, the high-layer configuration information comprises configuration of an initial (initial) BWP.

Wherein, according to the method of the present invention, the terminal capability is characterized by the number of user-specific BWPs supported by the terminal, and the high-level configuration information includes the configuration of the BWPs.

Wherein, according to the method of the present invention, the terminal capability is characterized by the number of user-specific BWPs supported by the terminal.

According to the method of the present invention, the terminal capability is characterized by the frequency band supported by the terminal.

Wherein, according to the method of the present invention, the terminal capability is characterized by the number of user-specific BWPs supported by the terminal and the frequency bands supported by the terminal.

In a second aspect, the present invention provides a device for determining quasi co-location of a control resource set CORESET, where the device includes a quasi co-location QCL processing module, configured to determine a quasi co-location QCL of a target control resource set CORESET according to terminal capability and/or high-level configuration information.

In a third aspect, the present invention provides a terminal, including: a processor and a memory storing computer program instructions; the processor, when executing the computer program instructions, implements the method of determining control resource set, CORESET, configuration information as described above.

In a fourth aspect, the present invention provides a computer storage medium having stored thereon computer program instructions that, when executed by a processor, implement a method of determining control resource set CORESET configuration information as described above.

In the embodiment of the invention, BWP applying TCI state ID is determined according to terminal capability and/or high-level configuration, so that quasi-co-location QCL of CORESET is determined, and beam receiving information is determined.

Drawings

Fig. 1 is a schematic diagram illustrating a principle of a method for determining a quasi-co-located QCL for a control resource set CORESET according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the RS interception in QCL of CORESET according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of RS interception in QCL of CORESET according to another embodiment of the present invention.

Fig. 4 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The invention provides a method for determining quasi-co-location QCL of CORESET, which is applied to a terminal side. The invention can make the system work stably under the condition of UE capability support, and improve the system performance as much as possible.

Several embodiments of the present invention will be described in detail below with reference to fig. 1.

In a first embodiment of the present invention, the terminal capability is characterized by the number of User-specific (UE-specific) BWPs supported by a User Equipment (UE).

In application, if the UE supports only 1 UE-specific BWP, on one hand, the TCI state ID (TCI-StateId, TCI state identifier) in the higher layer signaling may be applied to the TCI state list configured in the PDSCH-config of the target BWP or to the TCI state list configured in the preset CORESET to activate the TCI state (TCI state) of the target CORESET.

Here, the PDSCH-config of the target BWP may be at least any one of:

a) PDSCH-config of activated (active) BWP;

b) PDSCH-config of initial (initial) BWP;

c) presetting PDSCH-config of BWP;

d) PDSCH-config of BWP associated with a preset CORESET or a target CORESET.

In some embodiments of the present invention, the preset BWP may be at least one of: the BWP corresponding to the preset BWP ID, the BWP corresponding to the largest BWP ID in the BWPs associated with the target CORESET, the BWP corresponding to the smallest BWP ID in the BWPs associated with the target CORESET, the default BWP (default) BWP, and the first BWP (first).

In some embodiments of the present invention, the preset CORESET may be at least one of: the core set corresponding to the maximum core set ID, the core set corresponding to the minimum core set ID, and the core set configured by a System Information Block (System Information Block) SIB 1.

In some embodiments of the present invention, the BWP associated with the target CORESET may be a subset or a full set of BWPs whose frequency domain covers the frequency domain of the target CORESET.

In some embodiments of the present invention, the BWP associated with the preset CORESET may be a BWP corresponding to a largest BWP ID of the BWPs including the preset CORESET, or may be a BWP corresponding to a smallest BWP ID of the BWPs including the preset CORESET.

In application, if the UE only supports BWP of 1 UE-specific, on the other hand, TCI state of target CORESET can be determined according to one of the following two items; determining the TCI state of the preset CORESET as the TCI state of the target CORESET, and determining the preset QCL as the QCL of the target CORESET.

The QCL includes information such as a reference signal RS of the QCL and a type (type) of the QCL.

Example 1

In a practical application scenario of the present invention, the number of UE-specific BWPs supported by the UE is 1, and the number is denoted as M, where M is 1. To determine the QCL of CORESET, the UE performs the following processes:

1. the UE receives the MAC CE signaling and acquires a CORESET ID and a TCI state ID carried in the MAC CE;

2. the CORESET ID corresponds to CORESET #0 or common CORESET, and the TCI state ID is applied to one BWP of the above a) -d) (for example: active BWP), activating the TCI state corresponding to the TCI-StateId as the TCI state corresponding to CORESET (including QCL information such as RS and QCL type).

Example 2

In a practical application scenario of the present invention, the number of BWPs supported by the UE-specific UE is greater than 1, i.e. M >1, for example, M ═ 4, and to determine QCL of CORESET, the UE may perform the following processes:

2. if the CORESET ID corresponds to CORESET #0 or common CORESET, the TCI state ID is applied to one of the above a) -d) items BWP (for example: initial BWP), activating the TCI state corresponding to the TCI-StateId, and obtaining the TCI state (including QCL information such as RS and QCL type) corresponding to CORESET.

Example 3

In a practical application scenario of the present invention, the number of BWPs supported by the UE-specific is greater than 1, i.e. M >1, for example, M ═ 4, and to determine QCL of CORESET, the UE may further perform the following processing:

1. UE receives MAC CE signaling; obtaining CORESETID carried in MAC CE and TCI state ID (TCI-StateId).

2. If the CORESET ID corresponds to common CORESET, the TCI state of CORESET #0 is the TCI state of common CORESET.

In embodiments 1 to 3, it should be noted that, for the case where the number M of BWPs supported by the UE-specific is 1 and the case where M >1, the BWPs selected in the two cases should be different BWPs, so as to correspond to different terminal capabilities of different UEs.

Secondly, in the second embodiment of the invention, the terminal capability is characterized by the number of UE-specific BWPs supported by the UE and the BWP parameter of the network configuration.

In application, on the one hand, if the UE supports 1 UE-specific BWP, the network configures one initial BWP, and the network additionally configures one BWP different from the initial BWP (e.g. the UE-specific BWP), the TCI state of CORESET can be determined in a similar manner as the foregoing first embodiment, except that: since the configuration of the network has changed, the determined BWP should also be different.

Specifically, the TCI state ID (TCI-StateId, TCI state identifier) may be applied to a TCI state list (TCI state list) configured in the PDSCH-config of the target BWP or to a TCI state list configured in a preset CORESET, so as to activate the TCI state (TCI state) of the target CORESET.

Here, the PDSCH-config of the target BWP may be at least any one of:

a) PDSCH-config of activated (active) BWP;

b) PDSCH-config of initial (initial) BWP;

c) presetting PDSCH-config of BWP;

d) PDSCH-config of BWP associated with a preset CORESET or a target CORESET.

The options that can be adopted by the preset BWP, the preset CORESET, and the like are the same as the aforementioned options. It is noted that the choice of determination should be different in different situations, but may of course be the same. Can be determined according to actual conditions, and is not particularly specified.

In application, if the UE supports 1 UE-specific BWP, the network configures an initial BWP, and the network additionally configures a BWP different from the initial BWP (e.g. the UE-specific BWP), the TCI state of the target CORESET may also be determined according to one of the following two items; determining the TCI state of the preset CORESET as the TCI state of the target CORESET, and determining the preset QCL as the QCL of the target CORESET.

Further, after determining the QCL of the CORESET, the RS in the QCL of the CORESET may be intercepted, and an interception range of the RS may be determined, specifically, the interception may be performed by using one of the following items:

1) intercepting according to active BWP bandwidth;

2) intercepting according to the bandwidth of the BWP with the maximum bandwidth in the BWPs associated with the target CORESET;

3) intercepting according to the bandwidth of initial BWP;

4) intercepting according to the bandwidth of a preset BWP;

5) the interception is performed according to the bandwidth of BWP of the TCI state application.

In practical application, if the current active BWP bandwidth is a large bandwidth, when the TCI stateID is applied to the initial BWP, if the RS performs interception according to the bandwidth of the initial BWP, the RS interception is too short, which results in poor unicast performance. The embodiment of the invention intercepts the RS according to the activeBWP bandwidth, and can ensure the unicast performance.

Example 4

In an actual application scenario of the present invention, the number M of UE-specific BWPs supported by the UE is 1, and the base station configures one initial BWP (BWP ID #0) and one UE-specific BWP (BWP ID #1) for the UE, where the configuration of BWP ID #0 does not include the configuration of TCI state list. To determine the QCL for CORESET, the UE may perform the following:

1. the UE receives the MAC CE signaling, and acquires a CORESET ID and a TCI state ID (TCI-State ID) carried in the MAC CE;

2. if the CORESET ID corresponds to CORESET #0 or common CORESET, the TCI state ID is applied to one BWP of the aforementioned items a) c) d) (for example: active BWP) PDSCH-config, activating TCI state corresponding to TCI-State id, and being TCI state corresponding to CORESET.

3. And receiving the RS of the CORESET, and intercepting the RS according to the bandwidth of the active BWP.

Example 5

In a practical application scenario of the present invention, the UE supports 1 UE-specific BWP, the network configures an initial BWP (BWP #0), the network additionally configures a BWP (BWP #1) different from the initial BWP for the UE, and the UE may further perform the following processing:

1. UE receives the MAC CE signaling, and obtains a CORESET ID and a TCI state ID (TCI-State ID) carried in the MAC CE;

2. if the CORESET ID is configured as #0, the TCI state ID is applied to a BWP of one of the aforementioned items a) -d) (e.g.: initial BWP), activating TCI state corresponding to TCI-StateId, and is TCI state of CORESET # 0.

3. The RS of CORESET is received and intercepted according to the bandwidth of, for example, active BWP (embodiment of fig. 2).

Referring to fig. 2, in this embodiment, the current active BWP is BWP #1, the TCI state is determined according to the TCI state list configured for BWP #0(initial BWP), and the RS is intercepted according to the bandwidth of BWP # 1.

On the other hand, if the UE supports M UE-specific BWPs and the network configures one UE-specific BWP (where M > -1), the TCI state of CORESET may be determined in a similar manner as the foregoing first embodiment, except that: since the terminal capabilities of the UE have changed, the determined BWP should also be different.

Example 6

The number of the UE-specific BWPs supported by the UE is 4, the base station configures 1 UE-specific BWP for the UE, and the configuration of the BWP comprises the configuration of TCI state list. To determine the QCL for CORESET, the UE may perform the following:

2. if the CORESET ID corresponds to CORESET #0 or common CORESET, the TCI state ID is applied to one of the above a) -d) items BWP (for example: initial BWP, active BWP, BWP with the largest BWP ID, BWP with the smallest BWP ID, etc.) configured TCI state list in PDSCH-config, activate TCI state corresponding to TCI-StateId, which is TCI state corresponding to CORESET.

Example 7

The number of the UE-specific BWPs supported by the UE is 4, the base station configures 1 BWP for the UE, and the configuration of the BWP comprises the configuration of TCI state list. To determine the QCL for CORESET, the UE may perform the following:

2. before the MAC CE signaling takes effect, RRC reconfigures BWP;

3. if the CORESET ID corresponds to CORESET #0 or common CORESET, the TCI state ID is applied to one of the above a) -d) items BWP (for example: initial BWP, active BWP before RRC reconfiguration, active BWP after RRC reconfiguration, BWP with the largest BWP ID or BWP with the smallest BWP ID, etc.) configured TCI state list in PDSCH-config, activate TCI state corresponding to TCI-state ID, which is TCI state corresponding to CORESET.

On the other hand, if the UE supports M UE-specific BWPs and the network configures N UE-specific BWPs (where N < ═ M and N > -2), the TCI state of CORESET may be determined in a similar manner as in the foregoing first embodiment, except that: since the terminal capabilities of the UE have changed, the determined BWP should also be different.

Example 8

The number of the UE-specific BWPs supported by the UE is 4, the base station configures 4 BWPs for the UE, and the configuration of the BWPs comprises the configuration of TCI state list. To determine the QCL for CORESET, the UE may perform the following:

2. before the MAC CE signaling takes effect, BWP switching occurs;

3. if the CORESET ID corresponds to CORESET #0 or common CORESET, the TCI state ID is applied to one of the above a) -d) items BWP (for example: initial BWP before BWP or BWP handover, active BWP after BWP or BWP with the largest BWP or BWP with the smallest BWP ID, etc.) configured TCI state list in PDSCH-config, activate TCI state corresponding to TCI-state ID, which is TCI state corresponding to CORESET.

Third, in the third embodiment of the present invention, the high-level configuration information includes a configuration of an initial BWP.

On the one hand, if the initial BWP is configured with PDSCH-config and the PDSCH-config is configured with TCI state list, the TCI state ID of the MAC CE is applied to the PDSCH-config of the initial BWP to obtain the TCI state corresponding to CORESET.

On the other hand, if the PDSCH-config is not configured in the initial BWP or the TCI state list is not configured in the initial BWP, the TCI state ID of the MAC CE is applied to the TCI state list configured in the PDSCH-config of the target BWP or the TCI state list configured in the preset CORESET to activate the TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) presetting PDSCH-config of BWP;

c) and the PDSCH-config of the BWP associated with the preset CORESET or the target CORESET.

In some embodiments of the present invention, the preset BWP in the aforementioned embodiments may be at least one of: the BWP corresponding to the preset BWP ID, the BWP corresponding to the largest BWP ID in the BWPs related to the target CORESET, and the BWP, defaulttBP and first BWP corresponding to the smallest BWP ID in the BWPs related to the target CORESET.

In some embodiments of the present invention, the preset CORESET in the aforementioned embodiments may be at least one of: the CORESET corresponding to the maximum CORESET ID, the CORESET corresponding to the minimum CORESET ID and the CORESET configured by SIB 1.

In some embodiments of the present invention, the BWP associated with the target CORESET in the foregoing embodiments may be a BWP covering the frequency domain of the target CORESET in the frequency domain.

In some embodiments of the present invention, the BWP associated with the preset CORESET in the foregoing embodiments may be a BWP corresponding to a largest BWP ID in the BWPs including the preset CORESET, or may be a BWP corresponding to a smallest BWPID in the BWPs including the preset CORESET.

In application, in the foregoing embodiments, if the UE supports only 1 UE-specific BWP, on the other hand, the TCI state of the target CORESET may also be determined according to one of the following two items; determining the TCI state of the preset CORESET as the TCI state of the target CORESET, and determining the preset QCL as the QCL of the target CORESET.

Example 9

The number of BWPs supported by the UE-specific is 1, and in order to determine QCL of CORESET, the UE may perform the following processes:

2. if the CORESET corresponding to the CORESET ID is CORESET #0 or common CORESET;

3. if the initial BWP configuration exists, and the initial BWP is configured with the TCI state list in the PDSCH-config;

4. the TCI state ID is applied to a TCI state list configured in the PDSCH-config of the initial BWP, and the TCI state corresponding to the TCI-State ID is activated and is the TCIstate corresponding to CORESET.

Fourthly, in the fourth embodiment of the invention, the terminal capability is characterized by the frequency band supported by the terminal.

On the one hand, if the UE supports only the frequency range FR1(frequency range 1), the QCL for CORESET is determined according to the following method: the TCI-State ID field in the MAC CE indicates the index (index) of a Synchronization Signal Block (SSB), and the SSB corresponding to the SSB index is used as the QCL of CORESET.

On the other hand, if the UE supports only FR2(frequency range 2), QCL for CORESET is determined according to the following method:

the TCI-StateId domain in the MAC CE indicates a TCI state in a TCI state list, and the TCI-StateId domain is applied to the TCI state list configured in the PDSCH-config of the target BWP or applied to the TCI state list configured in the preset CORESET so as to activate the TCIstate of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) PDSCH-config for initial BWP;

c) presetting PDSCH-config of BWP;

d) and the PDSCH-config of the BWP associated with the preset CORESET or the target CORESET.

In yet another aspect, if the UE is capable of supporting FR1 and FR2, the QCL for CORESET is determined according to the following method:

if the UE receives the information in FR1, the TCI-StateId field in the MAC CE indicates SSBindex, and the SSB corresponding to the SSB index is used as QCL of CORESET.

If the UE receives the information on FR2, the TCI-StateId field in the MAC CE indicates the TCI state in the TCI state list, and the TCI-StateId field is applied to the TCI state list configured in the PDSCH-config of the target BWP or to the TCI state list configured in the preset CORESET to activate the TCIstate of the target CORESET; PDSCH-config of the target BWP is at least one of items a) to d) above.

The frequency point of 5G is generally divided into two parts: FR1(f <6GHz, low frequency) and FR2(f >6GHz, high frequency, millimeter wave). In general, the bandwidth of FR1 can be 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 40MHz, 50MHz, 60MHz, 80MHz, and 100 MHz; the bandwidth of FR2 can be 50MHz, 100MHz, 200MHz, 400MHz, etc.

Example 10

The UE supports FR1 and FR2, the base station configures the UE to operate in FR1, and in order to determine QCL of CORESET, the UE may perform the following processes:

2. if the CORESET corresponding to the CORESET ID is CORESET #0 or common CORESET, the TCI-StateId field is used for indicating the SSB index, and the SSB corresponding to the SSB index is the QCL corresponding to the CORESET.

Example 11

The UE supports FR1 and FR2, the base station configures the UE to operate in FR2, and in order to determine QCL of CORESET, the UE may perform the following processes:

Example 12

The UE supports FR1 and FR2, the number of BWPs supported by the UE is 4, the base station configures the UE to operate in FR2, and configures 4 BWPs for the UE. To determine the QCL for CORESET, the UE may perform the following:

1. UE receives MAC CE signaling; and acquiring CORESET ID carried in the MAC CE and TCI state ID (TCI-StateId).

In a fifth embodiment of the present invention, the terminal capability is characterized by the number of user-specific bandwidth parts BWP supported by the terminal and the frequency band supported by the terminal.

Specifically, if the number of user-specific BWPs supported by the terminal is greater than or equal to 1 and the frequency band supported by the terminal is FR2, the TCI state of CORESET may be determined in a manner similar to the foregoing first embodiment, except that: since the terminal capabilities of the UE have changed, the determined BWP should also be different.

In addition, in order to ensure the performance of the terminal, the terminal does not expect the network handover BWP or the reconfiguration RRC to occur within a time specified by any one of the following items:

a) the network indicates the TCI state of the target CORESET within the time;

b) the time from the time when the UE receives the MAC CE carrying the TCI state identifier to the time when the UE applies the MAC CE is up;

c) and within 3ms after the time when the UE receives the response (ACK/NACK) corresponding to the MAC CE carrying the TCI state identifier.

For this reason, in practical applications, when the terminal receives the high-layer DCI signaling indicating BWP handover or RRC reconfiguration within any of the above time periods, the terminal will not perform this process, e.g., the terminal may discard the signaling. The advantage of this processing is that when the MAC CE received by the UE is applied to the activeBWP, the MAC CE is applied to a certain BWP (the parameters of the currently active BWP are certain, and there is no problem of changing the parameters of the active BWP before and after handover/reconfiguration), so that the obtained TCI state is also certain, which can ensure that the terminal uses the network to receive information according to the beam parameters corresponding to the TCI state that the terminal wants to use when configuring the MAC CE, thereby ensuring the performance of the terminal.

Further, in the foregoing embodiments, after determining the QCL of CORESET, RS in the QCL of CORESET may be truncated, and the truncation range of RS may be determined, specifically, the truncation range may be performed by using one of the following items:

1) intercepting according to active BWP bandwidth;

3) intercepting according to the bandwidth of initial BWP;

4) intercepting according to the bandwidth of a preset BWP;

5) and intercepting according to the bandwidth of BWP applied by TCI state.

In some embodiments of the invention, for 1), referring to FIG. 2, if CORESET #0 obtains TCI state according to TCI state list of initial BWP. If the current active BWP overlaps with the initial BWP, RS of QCL of CORESET #0 intercepts RS according to the bandwidth of the active BWP.

In some embodiments of the invention, for 2), if CORESET #0 obtains TCI state according to TCI state list of initial BWP. If the current active BWP is overlapped with the initial BWP, when the bandwidth of the active BWP is larger than that of the initial BWP, the RS of the QCL of CORESET #0 intercepts the RS according to the bandwidth of the active BWP; and when the active BWP bandwidth is smaller than the initial BWP bandwidth, the RS of the QCL of CORESET #0 intercepts the RS according to the initial BWP bandwidth.

In practical application, if the current active BWP bandwidth is a large bandwidth, when the TCI state ID is applied to the initial BWP, if the RS performs interception according to the bandwidth of the initial BWP, the RS interception will be too short, which results in poor unicast performance. The embodiment of the invention intercepts the RS according to the activeBWP bandwidth, and can ensure the unicast performance.

In some embodiments of the invention, for 5), the TCI state is obtained from the TCI state list of the initial BWP, and then intercepted according to the initial BWP bandwidth. And if the TCI state is obtained according to the TCI state list of the active BWP, intercepting according to the bandwidth of the active BWP.

The embodiment of the invention intercepts according to the bandwidth of the BWP applied by the TCI state, and ensures the consistency of the TCI state and the applied BWP.

Example 13

Referring to fig. 3, the UE supports 1 UE-specific BWP, the network configures an initial BWP (BWP #0), and the network additionally configures a BWP (BWP #1) different from the initial BWP, so that the UE receives the MAC CE signaling, and obtains the core ID and the TCI state ID (TCI-StateId) carried in the MAC CE; if the CORESET ID is configured to be #0, the TCI state ID is applied to the TCI state list in the PDSCH configuration information of the initial BWP, and the TCI state corresponding to the TCI-StateId is activated and is the TCI state of CORESET # 0.

In this embodiment, the RS receiving the CORESET intercepts according to the bandwidth of the initial BWP, as shown in fig. 3, the current active BWP is BWP #1, and the TCI state is determined according to the TCI state list configured for BWP #0(initial BWP). RS is intercepted according to bandwidth of BWP # 0.

The embodiment of the invention can determine BWP applying TCI state ID according to terminal capability and/or high-level configuration, thereby determining quasi co-location QCL of CORESET and determining beam receiving information.

Corresponding to the method of the embodiment of the invention, the invention also provides a device, a terminal and a computer readable storage medium for determining the quasi co-location of the control resource set CORESET.

The device comprises a quasi co-location QCL processing module, which is used for determining the quasi co-location QCL of the target control resource set CORESET according to the terminal capability and/or the high-level configuration information.

Wherein, the terminal includes:

a memory for storing a program;

a processor, configured to run the program stored in the memory to perform the steps of the method for determining quasi co-location of a control resource set CORESET according to the embodiment of the present invention, where the method includes: and determining the quasi co-location QCL of the target control resource set CORESET according to the terminal capability and/or the high-level configuration information.

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the above method embodiments, and is not described herein again to avoid repetition. The embodiment of the invention can determine BWP applying TCI state ID according to terminal capability and/or high-level configuration, thereby determining quasi co-location QCL of CORESET and determining beam receiving information.

Figure 4 is a schematic diagram of a hardware configuration of a mobile terminal implementing various embodiments of the present invention,

the mobile terminal 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Wherein, the radio frequency unit 101 is configured to receive a high-level instruction;

and the processor 110 is configured to determine a quasi co-located QCL of the target control resource set CORESET according to the terminal capability and/or the high-level configuration information.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during a message transmission or call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The mobile terminal provides wireless broadband internet access to the user through the network module 102, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive an audio or video signal. The input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics processor 1041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 4, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 is an interface through which an external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the mobile terminal 100 includes some functional modules that are not shown, and thus, the detailed description thereof is omitted.

Preferably, an embodiment of the present invention further provides a mobile terminal, which includes a processor 110, a memory 109, and a computer program stored in the memory 109 and capable of running on the processor 110, where the computer program, when executed by the processor 110, implements each process of the foregoing quasi co-location QCL method embodiment for determining a target control resource set CORESET, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the foregoing quasi co-location QCL method embodiment for determining a target control resource set CORESET, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of determining quasi co-location of a control resource set, CORESET, the method comprising: determining a quasi co-location QCL of a target control resource set CORESET according to the terminal capability and/or high-level configuration information;

wherein the high-level configuration information includes a configuration of an initial BWP;

the terminal capabilities are characterized by the number of user-specific BWPs supported by the terminal and/or the terminal capabilities are characterized by the frequency bands supported by the terminal.

2. The method of claim 1, wherein if the initial BWP is configured with PDSCH-config and the PDSCH-config is configured with TCI state list, applying a TCI state flag to the PDSCH-config of the initial BWP to obtain the TCI state of the target CORESET.

3. The method according to claim 1, wherein if PDSCH-config is not configured in the initial BWP or TCI state list is not configured in the initial BWP, applying TCI state identification to the TCI state list configured in PDSCH-config of target BWP or to the TCI state list configured in preset CORESET to activate TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) presetting PDSCH-config of BWP;

4. The method according to claim 1, wherein if PDSCH-config is not configured in the initial BWP or the TCI state list is not configured in the initial BWP, determining the TCI state of the target CORESET according to one of the following two items;

a) determining the TCI state of a preset CORESET as the TCI state of the target CORESET;

b) and determining a preset QCL as the QCL of the target CORESET.

5. The method according to claim 1, wherein the number of user-specific BWPs supported by the terminal is 1, and the network configures one user-specific BWP for the terminal, and then applies the TCI state identifier to the TCI state list configured in the PDSCH-config of the target BWP or to the TCI state list configured in the preset CORESET to activate the TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) PDSCH-config for initial BWP;

c) presetting PDSCH-config of BWP;

6. The method according to claim 1, wherein the number of the user-specific BWPs supported by the terminal is 1, the network configures one user-specific BWP for the terminal or the network configures only one initial BWP for the terminal, and the initial BWP does not contain a TCI state list, then determining the TCI state of the target CORESET according to one of the following two items;

b) and determining a preset QCL as the QCL of the target CORESET.

7. The method according to claim 1, wherein if the number of user-specific BWPs supported by the terminal is greater than or equal to 1, applying the TCI state identification to the TCI state list configured in the PDSCH-config of the target BWP or to the TCI state list configured in the preset CORESET to activate the TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) PDSCH-config for initial BWP;

c) presetting PDSCH-config of BWP;

8. The method according to claim 1, wherein if the number of user-specific BWPs supported by the terminal is greater than or equal to 1, determining the TCI state of the target CORESET according to one of the following two items;

b) and determining a preset QCL as the QCL of the target CORESET.

9. The method of claim 1, wherein the frequency range supported by the terminal is a predetermined frequency range 1FR1, wherein the TCI status flag is used to indicate ssbinder, and wherein the SSB corresponding to the SSB index is a QCL of the target CORESET.

10. The method of claim 1, wherein the terminal supports a frequency band in a predetermined frequency range 2FR2, wherein the TCI state flag indicates a TCI state in a TCI state list, and wherein the TCI state flag is applied to the TCI state list configured in the PDSCH-config of the target BWP or the TCI state list configured in a preset CORESET to activate the TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) PDSCH-config for initial BWP;

c) presetting PDSCH-config of BWP;

11. The method according to claim 1, wherein the terminal supports frequency bands including FR1 and FR2, and the QCL of the target CORESET is determined according to the frequency band in which the terminal is located;

the terminal receives information on FR1, the TCI state identifier is used for indicating an SSB index, and an SSB corresponding to the SSB index is a QCL of the target CORESET;

wherein, the terminal receives information on FR2, the TCI state identifier is used to indicate the TCI state in the TCI state list, and the TCI state identifier is applied to the TCI state list configured in the PDSCH-config of the target BWP or to the TCI state list configured in the preset CORESET, so as to activate the TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) PDSCH-config for initial BWP;

c) presetting PDSCH-config of BWP;

12. The method of claim 1, wherein if the number of user-specific BWPs supported by the terminal is greater than or equal to 1 and the frequency band supported by the terminal is FR2, the TCI state identifier is applied to a TCI state list configured in PDSCH-config of the target BWP or applied to a TCI state list configured in a preset CORESET to activate the TCI state of the target CORESET;

wherein the PDSCH-config of the target BWP is at least one of:

a) PDSCH-config for active BWP;

b) PDSCH-config for initial BWP;

c) presetting PDSCH-config of BWP;

13. The method according to any of claims 3, 5, 7, 10, 11 and 12, wherein the preset BWP is at least one of:

presetting BWP corresponding to BWP ID;

the BWP corresponding to the largest BWP ID in the BWPs associated with the target CORESET;

the BWP corresponding to the smallest BWP ID in the BWPs associated with the target CORESET;

a default BWP;

a first BWP.

14. Method according to any one of claims 3, 5, 7, 10, 11 and 12, characterized in that said preset CORESET is at least one of the following:

the CORESET corresponding to the largest CORESET ID;

the CORESET corresponding to the smallest CORESET ID;

SIB1 configured CORESET.

15. The method according to any of claims 1-12, wherein the terminal does not perform BWP handover or RRC reconfiguration or discards BWP handover signaling or RRC reconfiguration signaling during any of the following:

a) the network indicates the TCI state of the target CORESET within the time;

c) and 3 milliseconds after the time when the UE receives the response (ACK/NACK) corresponding to the MAC CE carrying the TCI state identifier.

16. The method according to any of claims 1-12, characterized in that the reference signal RS in the QCL of the target CORESET is truncated based on one of the following:

1) intercepting according to active BWP bandwidth;

3) intercepting according to the bandwidth of initial BWP;

4) intercepting according to the bandwidth of a preset BWP;

17. A device for determining quasi co-location of a control resource set CORESET is characterized by comprising a quasi co-location QCL processing module, a quasi co-location QCL processing module and a quasi co-location QCL processing module, wherein the quasi co-location QCL processing module is used for determining the quasi co-location QCL of the control resource set CORESET according to terminal capability and/or high-level configuration information;

18. A terminal, characterized in that the terminal comprises: a processor and a memory storing computer program instructions; the processor, when executing the computer program instructions, carries out the steps of the method of determining quasi co-location of a set of control resources CORESET as claimed in any of claims 1-16.

19. A computer storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of a method of determining quasi co-location of a set of control resources CORESET as claimed in any of claims 1 to 16.