Power report method and device in carrier aggregation system

A carrier aggregation and power reporting technology, applied in the field of mobile communications, can solve problems such as not supporting SRS and uplink data, unable to guarantee the quality of UE data transmission and signaling transmission, not supporting SRS and uplink control information, etc., to improve transmission efficiency Effect

Inactive Publication Date: 2014-05-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] In the Rel-10 carrier aggregation system, parallel transmission of SRS and uplink data (data transmitted on PUSCH (Physical uplink share channel)) on different serving cells of the UE is not supported, nor is it supported by the UE SRS and uplink control information (data transmitted on PUCCH (Physical uplink control channel)) on different serving cells are transmitted in parallel. In Rel-11, UE supports SRS and uplink data on different serving cells Parallel transmission and parallel transmission of SRS and uplink control information on different serving cells. At this time, due to the concurrency of SRS and uplink data or uplink control information, the UE's uplink transmission power may be limited, so the quality of UE uplink data transmission and signaling transmission cannot be guaranteed.
So far, no effective solution to this problem has been proposed, so it is necessary to consider an appropriate power reporting method to solve the above problem

Method used

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  • Power report method and device in carrier aggregation system
  • Power report method and device in carrier aggregation system
  • Power report method and device in carrier aggregation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment introduces the power reporting method in the carrier aggregation system, such as figure 1 shown, including:

[0061] Step 10, when the UE supports sending SRS and uplink data on different serving cells at the same time, or the UE supports sending SRS and uplink control information on different serving cells at the same time, the UE uses one of the following formulas to calculate the number of serving cells that send SRS PH information:

[0062] PH information = the maximum transmit power of the UE in the serving cell where the SRS is sent - the transmit power of the uplink data transmission channel estimated by the UE on the serving cell; Equation (1)

[0063] PH information = the maximum transmit power of the UE in the serving cell where the SRS is sent - the transmit power of the uplink data transmission channel estimated by the UE on the serving cell - the transmit power of the SRS; Equation (2)

[0064] The above-mentioned UE supports sending SRS a...

Embodiment 2

[0074] The power reporting device implementing the method in Embodiment 1 above is located in the UE, such as figure 2 As shown, it includes a PH information calculation module 21 and a PHR information reporting module 22, wherein:

[0075] The PH information calculation module 21 is used to adopt one of the following formulas when the current UE supports sending SRS and uplink data separately on different serving cells at the same time, or when the current UE supports sending SRS and uplink control information separately on different serving cells at the same time Calculate the PH information of the serving cell sending the SRS:

[0076] PH information = maximum transmit power of the UE in the serving cell that sends the SRS - transmit power of the uplink data transmission channel estimated by the UE on the serving cell;

[0077] PH information = the maximum transmission power of the UE in the serving cell that sends the SRS - the transmission power of the uplink data trans...

application example 1

[0084] This example describes the scenario where the UE sends SRS on SCell1 (Secondary Serving Cell 1) and sends PUSCH on SCell2 (Secondary Serving Cell 2), for example image 3 shown, including the following steps:

[0085] Step 101: When the UE judges that the PHR reporting trigger condition is met, the UE simultaneously carries the PHR information in the uplink data of SCell2;

[0086] In this example, the trigger condition of PHR includes any of the following:

[0087] 1) When the PHR prohibition timer (prohibitPHR-Timer) expires, and the change in path loss relative to the last PHR report is greater than the predetermined threshold value dl-PathlossChange (in decibels dB);

[0088] 2) PHR periodic timer (periodicPHR-Timer) timeout;

[0089] 3) Configuration or reconfiguration of PHR functional entities;

[0090] 4) A certain SCell is activated.

[0091] After the UE triggers the PHR, it can wait until there is an uplink resource allocation before sending the PHR, that...

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Abstract

This invention discloses a power report method and a device in a carrier aggregation system, which guarantees the transmission of data and signaling in a serving cell. The power report method comprises: UE supports respectively transmitting SRS and uplink data in different serving cells at the same time, or, the UE adopts one of the following formulas to calculate and transmit PH information of the SRS while supporting transmitting SRS and uplink control information respectively in different serving cells at the same time. The formulas are as follow: PH information =the biggest transmission of the serving cell when the UE is transmitting the SRS -the data transmission channel transmission power which is evaluated by the UE in the serving cell; and PH information =the biggest transmission power of the serving cell when UE is transmitting the SRS-the uplink data transmission channel transmission power which is evaluated by the UE in the serving cell-SRS transmission power. UE reports PHR information which carries the PH information. The power report device is positioned in the UE, comprising a PH information calculation module and a PHR information report module.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a power reporting method and device in a carrier aggregation system. Background technique [0002] At present, wireless communication systems use electromagnetic waves to communicate with fixed or mobile wireless communication user equipment (wireless phones or notebooks and computers with wireless communication cards can be called user equipment). Generally speaking, during wireless communication, a user equipment (User Equipment, UE for short) is located within the wireless coverage of the system, and communicates with the system through a carrier in a wireless communication channel. [0003] The control network element of the wireless communication system can control other devices according to the communication protocol or technology agreed by the system. Control network elements include control stations and networks. Control stations include but are not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/24H04W52/32
CPCH04W52/365
Inventor 万璐刘扬陈中明黄亚达
Owner ZTE CORP
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