A kind of processing method and equipment of periodic SRS

A processing method and periodic technology, applied in the communication field, can solve the problems of no periodic SRS, inability to determine the value of the STAGSCell uplink synchronization TA, etc., and achieve the effect of reducing interference

Active Publication Date: 2011-12-21
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] In the above step (2), the existing protocol does not stipulate whether the periodic SRS can be sent, because at this time the TAT (Timing Alignment Timer, time alignment timer) on the STAG has not yet started, only the TAT of the PTAG is running, and the UE according to the TAT of the PTAG The operating status of the STAG cannot determine whether the SCell in the STAG is uplink synchronized and its TA value, so it is necessary to clarify whether it is possible to send periodic SRS at this time

Method used

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  • A kind of processing method and equipment of periodic SRS
  • A kind of processing method and equipment of periodic SRS
  • A kind of processing method and equipment of periodic SRS

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Embodiment 1

[0047] Embodiment 1 of the present invention provides a periodic SRS processing method, such as image 3 As shown, the method includes the following steps:

[0048] In step 301, the UE does not know the uplink TA value on the newly added secondary cell SCell, that is, the UE cannot determine the uplink TA value on the newly added secondary cell SCell.

[0049] In step 302, the UE is prohibited from sending periodic SRS.

[0050] In the embodiment of the present invention, when a network side device (such as a base station) adds an SCell to the UE, if the UE cannot determine the synchronization or out-of-synchronization status of the newly added SCell according to the TAT of the SCell or the STAG to which the SCell belongs, that is, the UE does not know the newly added SCell. When the uplink TA value of the secondary cell SCell is set, the UE is not allowed to send periodic SRS.

[0051] It should be noted that if PUCCH is allowed to be configured on SCell (including CQI (Cha...

Embodiment 2

[0076] Based on the above assumptions, Embodiment 2 of the present invention provides a periodic SRS processing method, which determines whether the periodic SRS on the SCell is available according to whether the RA on the STAG is successful, such as Image 6 As shown, the method includes the following steps:

[0077] In step 601, an RRC connection and uplink synchronization are established on the PCell.

[0078] When the UE in the idle state has data transmission requirements, RA is initiated on the PCell, and an RRC connection and uplink synchronization are established on the PCell.

[0079] Step 602, the base station determines to add an SCell.

[0080] As the data transmission requirements of the UE increase, the base station needs to increase the number of aggregated cells for the UE, and the base station determines that the SCells that need to be added for the UE are Cell3 and Cell4 according to factors such as the channel quality of the SCell, interference, and the amoun...

Embodiment 3

[0092] Based on the above assumptions, Embodiment 3 of the present invention provides a periodic SRS processing method, which judges whether the periodic SRS on the SCell can be sent according to whether the TAT of the STAG is activated, such as Figure 7 As shown, the method includes the following steps:

[0093] In step 701, an RRC connection and uplink synchronization are established on the PCell.

[0094] When the UE in the idle state has data transmission requirements, RA is initiated on the PCell, and an RRC connection and uplink synchronization are established on the PCell.

[0095] Step 702, the base station determines to add an SCell.

[0096] As the data transmission requirements of the UE increase, the base station needs to increase the number of aggregated cells for the UE, and the base station determines that the SCells that need to be added for the UE are Cell3 and Cell4 according to factors such as the channel quality of the SCell, interference, and the amount ...

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Abstract

The invention discloses a method for processing a periodic sounding reference signal (SRS) and equipment. The method comprises the following steps of: forbidding user equipment to send the periodic SRS when an uplink timing advance (TA) value on a newly-added secondary cell (SCell) cannot be determined by the user equipment. By the embodiment of the invention, the unnecessary sending of the periodic SRS by the SCell is avoided, and the unnecessary interference of a system is reduced.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular to a periodic SRS processing method and equipment. Background technique [0002] (1) LTE-A (LTE-Advanced, Advanced LTE) system carrier aggregation technology. [0003] The peak rate of the LTE-A system has been greatly improved compared with the LTE (Long Term Evolution, long-term evolution) system, and it is required to reach 1Gbps in the downlink and 500Mbps in the uplink; at the same time, the LTE-A system requires good compatibility with the LTE system; based on To improve the peak rate, be compatible with the LTE system, and fully utilize spectrum resources, the LTE-A system introduces Carrier Aggregation (CA, Carrier Aggregation) technology. [0004] The carrier aggregation technology refers to a mechanism in which a UE (User Equipment, user equipment) can simultaneously aggregate multiple cells (cells), and multiple cells can simultaneously provide data tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/1257H04W72/535
Inventor 赵亚利许芳丽刘佳敏
Owner DATANG MOBILE COMM EQUIP CO LTD
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