Power control reference signal configuration method of PUSCH (Physical Uplink Shared Channel)

Abstract

The invention relates to a method for configuring PUSCH (Physical Uplink Shared Channel) power control reference signals, which comprises the following steps of: S1, according to the provision of a 38.331 protocol, when the number of configured PUSCH path loss reference signals is more than 4, adding an optional cell in an SRI-PPC (Serial Radio Interface-Physical Power Control), and the value range of the optional cell is (4, 31); s2, an SPM list and an SPM list 2-r17 are configured, and the base station and the UE perform configuration together; and S3, the data type of the SPM list 2-r17 is also SRI-PPC, the configuration principle of the data type of the SPM list 2-r17 is the same as that of the SPM list 2-r17, and when a second SRS resource set of the PUSCH needs to be configured, the SPM list 2-r17 is configured. The method provided by the invention has the excellent technical effects; the problem that when the number of SPMs exceeds 4, the exceeded SPMs cannot be configured due to the fact that Id exceeds the range of [0, 3] is solved; and the SPM list can be correctly configured within the range of the number of the SPM supported by the protocol.

Description

Technical Field

[0001] The invention belongs to the field of mobile communication technology applications, and in particular relates to a method for configuring a power control reference signal of a PUSCH. Technical Background

[0002] Currently, 5G networks have been commercialized on a large scale. Millimeter wave technology is an important basic technology in 5G applications. In the existing technologies of 5G millimeter wave applications, millimeter waves are combined with large-scale MIMO. Therefore, millimeter wave cells often contain multiple beams. When the base station performs beam management, in order to measure the path loss between different beams and UEs, it is necessary to configure the path loss reference signal of each beam when configuring PUSCH power control for the UE.

[0003] The 38.331 protocol stipulates that a maximum of 64 PUSCH path loss reference signals can be configured. The path loss reference signals are configured in the pathlossReferenceRSToAddModList information element of PUSCH-PowerControl and the pathlossReferenceRSToAddModListSizeExt-v1610 information element of pusch-PowerControl-v1610. When the number of path loss reference signals to be configured is not more than 4, the path loss reference signal is configured in the pathlossReferenceRSToAddModList information element of PUSCH-PowerControl; when the number of path loss reference signals is greater than 4, the first 4 path loss reference signals are configured in the pathlossReferenceRSToAddModList information element of PUSCH-Power Control, and the remaining path loss reference signals are configured in the pathlossReferenceRSToAddModListSizeExt-v1610 information element of pusch-PowerControl-v1610.

[0004] The 38.331 protocol stipulates that when the number of configured PUSCH path loss reference signals is greater than 4, the enablePL-RS-UpdateForPUSCH-SRS-r16 cell in UplinkConfig must be configured as enable. When this cell is configured as enable, the sri-PUSCH-MappingToAddModList cell in PUSCH-PowerControl must be configured. The sri-PUSCH-MappingToAddModList can be configured with a maximum of 16 cells. The structure of the cell sri-PUSCH-MappingToAddModList is SRI-PUSCH-PowerControl. rControl; The R17 version of the protocol expands the sri-PUSCH-MappingToAddModList and adds the sri-PUSCH-MappingToAddModList2-r17 information element, which can be configured up to 16 times. Its structure is SRI-PUSCH-PowerControl; sri-PUSCH-MappingToAddModList corresponds to the first SRS resource set of PUSCH, and sri-PUSCH-MappingToAddModList2-r17 corresponds to the second SRS resource set of PUSC H.

[0005] Although sri-PUSCH-MappingToAddModList and sri-PUSCH-MappingToAddMod List2-r17 can be configured with a maximum of 16 elements each, according to the definition of SRI-PUSCH-PowerControl, the value range of the symbol sri-PUSCH-PathlossReferenceRS-Id is [0,3]. In this way, when the number of configured PUSCH power control reference signals is greater than 4, the corresponding sri-PUSCH-Mapping information cannot be configured. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a method for configuring a PUSCH power control reference signal.

[0007] The configuration method of the PUSCH power control reference signal comprises the following steps:

[0008] Step 1. According to the 38.331 protocol, when the number of configured PUSCH path loss reference signals is greater than 4, the enablePL-RS-UpdateForPUSCH-SRS-r16 information element in UplinkConfig must be configured as enable. When this information element is configured as enable, it is necessary to configure the sri-PUSCH-MappingToAddModList information element in PUSCH-PowerControl, that is, add an optional information element sri-PUSCH-PathlossReferenceRS-Id-extend in SRI-PUSCH-PowerControl for extending the path loss reference signal ID. The value range of sri-PUSCH-PathlossReferenceRS-Id-extend is (4,31).

[0009] Step 2: Configure sri-PUSCH-MappingToAddModList and sri-PUSCH-MappingToAddModList2-r17. The base station and UE perform the configuration together.

[0010] Step 3, the data type of sri-PUSCH-MappingToAddModList2-r17 is also SRI-PU SCH-PowerControl, and the configuration principle of its path loss reference signal ID is the same as sri-PUSCH-MappingTo AddModList. When the second SRS resource set of PUSCH needs to be configured, sri-P USCH-MappingToAddModList2-r17 needs to be configured.

[0011] Further, in step 2, sri-PUSCH-MappingToAddModList and sri-PUSCH-MappingToAddModList2-r17 are configured, and the base station and UE jointly configure:

[0012] In step 2.1, the number of elements in sri-PUSCH-MappingToAddModList to be configured is M, and the number of elements in sri-PUSCH-MappingToAddModList2-r17 to be configured is N, and the maximum values ​​of M and N do not exceed the maximum value of 16 specified in the 38.331 protocol;

[0013] Step 2.2, when the number M of elements in sri-PUSCH-MappingToAddModList is less than or equal to 4, the path loss reference signal IDs of the M elements in sri-PUSCH-MappingToAddModList are configured through the information element sri-PUSCH-PathlossReferenceRS-Id, and the newly added optional information element sri-PUSCH-PathlossReferenceRS-Id-extend is not configured;

[0014] Step 2.3, when the number of elements M in sri-PUSCH-MappingToAddModList is greater than 4, the path loss reference signal IDs of the first 4 elements in sri-PUSCH-MappingToAddModList are configured through the sri-PUSCH-PathlossReferenceRS-Id information element, and the sri-PUSC H-PathlossReferenceRS-Id-extend information element of the first four elements is not configured; the path loss reference signal IDs of the remaining M-4 elements are configured through the sri-PUSCH-PathlossReferenceRS-Id-extend information element, and the UE needs to ignore the sri-PUSCH-PathlossReferenceRS-Id information element of these M-4 elements.

[0015] Compared with the prior art in this technical field, the configuration method of the PUSCH power control reference signal of the present invention has the following superior technical effects:

[0016] 1. The configuration method of the PUSCH power control reference signal of the present invention solves the problem that when the number of sri-PUSCH-Mappings exceeds 4, the excess sri-PUSCH-Mappings cannot be configured because the sri-PUSCH-Pathloss ReferenceRS-Id exceeds the range of [0,3].

[0017] 2. The configuration method of the PUSCH power control reference signal of the present invention enables the sri-PUSCH-Mapping list to be correctly configured within the range of the number of sri-PUSCH-Mappings supported by the protocol. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of the method for configuring the power control reference signal of PUSCH according to the present invention. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions and advantages of the present invention more clear, the following will be combined with the accompanying drawings in the embodiments of the present invention. Figure 1 , supplementary explanation is given to the technical solutions in the specific embodiments of the present invention.

[0020] Example

[0021] Step A, add an optional information element PUSCH-PathlossReferenceRS-Id-extend to the definition of SRI-PUSCH-PowerControl in the 38.331 protocol. After adding the information element, the SRI-PUSCH-PowerControl includes the information element definition shown in Table 1 below:

[0022] Table 1

[0023]

[0024] Step B: configure the sri-PUSCH-MappingToAddModList list, where the type of each element in the list is SRI-PUSCH-PowerControl. This embodiment assumes that the number of elements to be configured in the sri-PUSCH-MappingToAddModList list is 16.

[0025] Step B1, for the first 4 elements in sri-PUSCH-MappingToAddModList, according to the aforementioned configuration method, sri-PUSCH-PowerControlId is 0, 1, 2, and 3 respectively, and sri-PUSCH-PathlossReferenceRS-Id is 0, 1, 2, and 3 respectively, and the sri-PUSCH-PathlossReferenceRS-Id-extend field of these four elements is not configured;

[0026] Step B2: for the remaining 12 elements in sri-PUSCH-MappingToAddModList, according to the aforementioned configuration method, sri-PUSCH-PowerControlId is respectively configured to be 4, 5...14, 15, and sri-PUSCH-PathlossReferenceRS-Id-extend is respectively configured to be 4, 5...14, 15;

[0027] When the UE receives the sri-PUSCH-MappingToAddModList configuration list from the base station, for the elements in the list that are not configured with sri-PUSCH-PathlossReferenceRS-Id-extend, the valid sri-PUSCH-PowerControlId is obtained from the information element sri-PUSCH-PowerControlId; for the elements in the list that are configured with sri-PUSCH-PathlossReferenceRS-Id-extend, the valid sri-PUSCH-PowerControlId is obtained from the information element sri-PUSCH-PathlossReferenceRS-Id-extend, which means that the UE needs to ignore the configuration value of the information element sri-PUSCH-PowerControlId;

[0028] Step C, when the second SRS resource set of PUSCH needs to be configured, sri-PUSCH-MappingToAddModList2-r17 needs to be configured. The type of each element of sri-PUSCH-MappingToAddModList2-r17 is also SRI-PUSCH-PowerControl, and the configuration principle is the same as sri-PUSCH-MappingToAddModList.

[0029] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the scope disclosed in the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for configuring a PUSCH power control reference signal, comprising the following steps: Step 1. According to the 38.331 protocol, when the number of configured PUSCH path loss reference signals is greater than 4, the enablePL-RS-UpdateForPUSCH-SRS-r16 information element in UplinkConfig must be configured as enable. When this information element is configured as enable, it is necessary to configure the sri-PUSCH-MappingToAddModList information element in PUSCH-PowerControl, that is, add an optional information element sri-PUSCH-PathlossReferenceRS-Id-extend in SRI-PUSCH-PowerControl for extending the path loss reference signal ID. The value range of sri-PUSCH-PathlossReferenceRS-Id-extend is (4,31). Step 2: Configure sri-PUSCH-MappingToAddModList and sri-PUSCH-MappingToAddModList2-r17. The base station and UE perform the configuration together. Step 3, the data type of sri-PUSCH-MappingToAddModList2-r17 is also SRI-PU SCH-PowerControl, and the configuration principle of its path loss reference signal ID is the same as sri-PUSCH-MappingTo AddModList. When the second SRS resource set of PUSCH needs to be configured, sri-P USCH-MappingToAddModList2-r17 needs to be configured.

2. According to the configuration method of the PUSCH power control reference signal of claim 1, in step 2, sri-PUSCH-MappingToAddModList and sri-PUSCH-MappingToAddModList2-r17 are configured, and the base station and the UE jointly configure: In step 2.1, the number of elements in sri-PUSCH-MappingToAddModList to be configured is M, and the number of elements in sri-PUSCH-MappingToAddModList2-r17 to be configured is N, and the maximum values ​​of M and N do not exceed the maximum value of 16 specified in the 38.331 protocol; Step 2.2, when the number M of elements in sri-PUSCH-MappingToAddModList is less than or equal to 4, the path loss reference signal IDs of the M elements in sri-PUSCH-MappingToAddModList are configured through the information element sri-PUSCH-PathlossReferenceRS-Id, and the newly added optional information element sri-PUSCH-PathlossReferenceRS-Id-extend is not configured; Step 2.3, when the number of elements M in sri-PUSCH-MappingToAddModList is greater than 4, the path loss reference signal IDs of the first 4 elements in sri-PUSCH-MappingToAddModList are configured through the sri-PUSCH-PathlossReferenceRS-Id information element, and the sri-PUSC H-PathlossReferenceRS-Id-extend information element of the first four elements is not configured; the path loss reference signal IDs of the remaining M-4 elements are configured through the sri-PUSCH-PathlossReferenceRS-Id-extend information element, and the UE needs to ignore the sri-PUSCH-PathlossReferenceRS-Id information element of these M-4 elements.

Images