Method and device for optimizing search space of user equipment

A search space, user equipment technology, applied in the field of user equipment search space optimization, can solve the problems of search space resource occupation, UE's PDCCH resource allocation failure, etc.

Active Publication Date: 2010-04-28
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When researching the subject of the present invention, the inventor found that the processing capabilities of each UE in the actual system are different, and the size of the search space that UEs with different processing capabilities can detect within a certain period of time is different, which may cause some The UE's search space resources are occupied by other UEs, resulting in the failure of the UE's PDCCH resource allocation

Method used

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  • Method and device for optimizing search space of user equipment
  • Method and device for optimizing search space of user equipment
  • Method and device for optimizing search space of user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to figure 1 , a method for optimizing a user equipment (UE) search space provided in this embodiment includes:

[0036] S101. The network side receives the physical downlink control channel PDCCH search capability information of the UE reported by the user equipment UE;

[0037] S102. Determine the number M of PDCCH candidate sets that the UE currently needs to detect based on the reported PDCCH search capability information (L) , and calculate the UE's search space S k (L) ;

[0038] S103. Allocate corresponding control channel resources (control channel elements CCE) to the UE from the calculated search space.

[0039] In the technical solution provided by this embodiment, the network side obtains the PDCCH search capability information of the user equipment UE, and determines the number of PDCCH candidate sets that the UE needs to detect based on the search capability of the UE, and calculates the search space of the UE ; Allocating corresponding control c...

Embodiment 2

[0041]A method for optimizing a user equipment search space provided in this embodiment includes:

[0042] S201, the network side sends a UE capability inquiry message (UECapabilityEnquiry);

[0043] When the network side needs to obtain the radio access capability information (including PDCCH search capability) of the UE in the RRC connected state, the process of UE sending capability information is triggered. In order to obtain UE capability information (eg, the maximum number of PDCCH candidate sets that the UE can search), specifically, an inquiry message is sent to the UE, instructing the UE to report its PDCCH search capability information.

[0044] S202, the user equipment UE reports the physical downlink control channel PDCCH search capability information of the UE to the network side;

[0045] The UE puts the maximum number of PDCCH candidate sets that it can search into the UE Capability RAT-Container and reports it to the network side;

[0046] S203, the network s...

Embodiment 3

[0072] The difference between this embodiment and Embodiment 2 is that the network side does not need to set the number M of the configured PDCCH candidate sets (L) Notifying the UE that the UE determines the maximum number N of PDCCH candidate sets that can be detected by the UE according to its own capabilities, and calculates its corresponding search space according to the number N of PDCCH candidate sets, and calculates its search space Perform a blind test.

[0073] refer to image 3 , a method for optimizing a user equipment search space provided in this embodiment includes:

[0074] Steps S301-S302 are basically the same as S201-S202 in Embodiment 2, and will not be repeated here;

[0075] S303, the network side directly calculates the search space of the UE based on the number of PDCCH candidate sets reported by the UE, the calculation method is the same as step S205, and allocates PDCCH resources to it;

[0076] S304, the UE determines the maximum number of PDCCH c...

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Abstract

The embodiment of the invention discloses a method for optimizing the search space of user equipment, which comprises the following steps: receiving the search capability information of a physical downlink control channel (PDCCH) of the user equipment (UE), which is reported by the UE; based on the search capability information of the PDCCH, which is reported by the UE, determining the number of candidate sets of the PDCCH of the UE, which needs to be detected; and according to the number of the candidate sets of the PDCCH, calculating the search space of the UE. The embodiment of the invention also provides a corresponding device for optimizing the search space of the UE, and user terminal equipment. The scheme provided by the embodiment of the invention can increase the success ratio of resource allocation of the PDCCH and increase the search efficiency of the UE, thereby increasing the resource utilization ratio of the PDCCH and being beneficial to power saving of the UE.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and device for optimizing a user equipment search space. Background technique [0002] The Long Term Evolution (LTE, Long Term Evolution) project is an evolution project of 3G, which improves and enhances the 3G air access technology, Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) and Multiple Input Multiple Output (MIMO, Multiple Input The combination of MultipleOutput) is the main technical feature of LTE on the physical layer. [0003] The downlink physical channels of LTE include physical downlink shared channel (PDSCH, PhysicalDownlink Shared Channel) and physical downlink control channel (PDCCH, PhysicalDownlink Control Channel), among which the physical downlink shared channel PDSCH is used to transmit shared data, and this part of data is the user The data that the equipment (UE) will eventually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/18H04W88/02
CPCY02B60/50Y02D30/70
Inventor 刘珏君李洋帕特里克·侯赛因唐文芳
Owner SHANGHAI HUAWEI TECH CO LTD
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