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Power headroom reporting method, tpc command sending method and device, base station, terminal

A technology for power headroom reporting and power control parameters, applied in wireless communication, electrical components, etc., can solve problems such as ambiguity and unfair PHR reporting, and achieve the effect of ensuring fairness

Active Publication Date: 2022-07-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 5G NR (New Radio) is an ongoing 3GPP (Third Generation Partnership) research project. As a fifth-generation mobile communication system, 5G NR needs to support an unprecedented number of different types of application scenarios, and also needs to support traditional frequency bands at the same time , high frequency band and beam mode bring great challenges to the design of power control
The method of supporting multi-beam power control in 5G NR may require UE to measure the path loss of multiple RSs at the same time, but how to reflect the support for multi-beam power control configuration in the trigger condition of PHR in related technologies is not clear
[0004] In addition, if the PHR report only reports the real PHR of {j,k,l} related to the real transmission, or reports the PHR with fixed {j,k,l} parameters, then there may not be any for other {j,k,l} Opportunity to report PHR, that is, the current PHR reporting is unfair

Method used

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  • Power headroom reporting method, tpc command sending method and device, base station, terminal
  • Power headroom reporting method, tpc command sending method and device, base station, terminal
  • Power headroom reporting method, tpc command sending method and device, base station, terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0360] The UE determines the RS set for measuring the PL according to the configuration information of the base station or according to a predefined manner.

[0361] The above RS set can be any of the following:

[0362] a) RS set of the first PL;

[0363] b) RS set of the second PL;

[0364] c) RSs in the RS set of the second PL associated with the second closed-loop power control set;

[0365] d) RSs in the RS set of the first PL associated with the designated closed-loop power control. For example, the RSs in the RS set of the first PL associated with the closed-loop power control of l=1.

[0366] e) RSs in the RS set of the second PL associated with the designated closed-loop power control. For example, the RSs in the RS set of the second PL associated with the closed-loop power control of l=1.

[0367] Associating with the closed-loop power control set refers to being associated with each closed-loop power control in the closed-loop power control set.

[0368] For e...

Embodiment 2

[0416] In CA of LTE, the PHRs of multiple CCs are independently determined and carried in one MAC PDU. The MAC PDUs of the PHRs of multiple CCs are sent on one UL CC in the CA.

[0417] Configuration of BWP in each CC is supported in the next generation technology. Each serving cell can be configured with one or more BWPs, and one or more BWPs can be activated at the same time. When BWPs are configured, power control parameters are independently configured on each BWP. When there is no BWP configuration, each CC configures power control parameters independently.

[0418] The power control parameters include at least one of the following: open-loop power control parameters, RS configuration parameters of the PL, and closed-loop power control parameters. The base station configures the association between the power control parameters and the SRI, and indicates the transmitted power control parameters through the SRI. Alternatively, the base station configures the association...

Embodiment 3

[0448] In the next generation technology, each CC can be configured with more than 1 BWP. When multiple BWPs are activated at the same time, or different BWPs are used alternately, the PHRs of multiple BWPs need to be reported. In fact, BWPs with similar frequency domains are likely to have similar beam characteristics. The configuration of multiple BWPs with similar beam characteristics is mainly to obtain gains of different frequency diversity. Therefore, it is necessary to support PHR sharing between BWPs. Similarly, PHRs may also be shared between CCs.

[0449] The sharing of PHRs of more than 1 BWP or more than 1 CC is realized by:

[0450]The base station configures or determines groups of BWPs or CCs in a predefined manner, and each group shares the same type of PHR. The grouping in which the BWP or CC is determined in a predefined manner includes at least one of the following:

[0451] 1. CCs whose frequency domain span does not exceed a predefined threshold belon...

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Abstract

The present application discloses a power headroom reporting method, a TPC command sending method and device, a base station, and a terminal. The power headroom reporting method includes: after the triggering condition of the power headroom reporting PHR is satisfied, determining the parameters of the PHR and the PHR value, the parameters of the PHR include the power control parameters of the PHR; the PHR is sent according to a predefined PHR format. In the present application, the PHR is sent according to the predefined format of the power control parameter indicating the PHR, so that the receiving node can clearly know the configuration of the power control parameter of the beam corresponding to the sent PHR by the sending node.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a power headroom reporting method, a TPC command sending method and device, a base station, and a terminal. Background technique [0002] 5G NR (New Radio) is an ongoing 3GPP (Third Generation Partnership) research project. As a fifth-generation mobile communication system, 5G NR needs to support an unprecedented number of different types of application scenarios, as well as traditional frequency bands. , high frequency band and beam mode bring great challenges to the design of power control. [0003] When the base station schedules the uplink transmission of the User Equipment (UE), many factors need to be determined, including time-frequency resources, transmission rate, modulation and coding mode, and Multiple-Input Multiple-Output (MIMO) mode. etc., according to the received quality, the base station needs to determine which factors need to be adj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W24/10
CPCH04W24/08H04W24/10
Inventor 姚珂高波鲁照华黄河
Owner ZTE CORP
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