China Academy of Telecommunications Technology

Datang Mobile Communications Equipment Co., Ltd.

Datang Mobile Communications Co., Ltd

Jinling Hu

Yu Yang

Xueming Pan

Yingmin Wang

Libo Wang

Guojun Xiao

Guiliang Yang

Wenling Bai

Chenggang Jiang

Qiubin Gao

Feng Li

Jie Zhang

Deshan Miao

Rui Zhao

Yuanyuan Li

Fangchen Cheng

Yuan Feng

Shaoli Kang

Shihe Li

Shiyan Ren

Shilei Zheng

Chenguang Li

Darun Wang

The present disclosure provides a transmission feedback method and a UE. The transmission feedback method includes: transmitting a time-frequency transmission resource for transmitting feedback information for unicasting or multicasting transmission to at least one target UE which has established a connection with a source UE; acquiring the feedback information transmitted on the time-frequency transmission resource from the target UE; and determining a unicasting or multicasting transmission state in accordance with the feedback information.

Transmission feedback method and user equipment

The present disclosure provides a dynamic spectrum allocation method and a dynamic spectrum allocation device. In the method, a centralized node performs spectrum allocation and transmits a spectrum allocation result to each communication node, so that the communication node operates at a corresponding spectrum resource in accordance with the spectrum allocation result and performs statistics of communication quality measurement information. The centralized node receives the communication quality measurement information reported by the communication node, and determines whether or not it is required to trigger the spectrum re-allocation for the communication node in accordance with the communication quality measurement information about the communication node. When it is required to trigger the spectrum re-allocation, the centralized node re-allocates the spectrum for the communication node.

Dynamic spectrum allocation method and dynamic spectrum allocation device

A method and device for acquiring user equipment duplex mode information are disclosed by the present invention, wherein, the method includes: the user equipment establishes a radio resource control connection with a base station, and reports the user equipment duplex mode information when establishing the radio resource control connection. With the technical scheme provided in the embodiments of the present invention, the network side acquires the duplex mode of the user equipment.

Method and device for obtaining duplex mode information of user equipment

The present application relates to of the communication field and discloses a method, device and system for implementing frequency point switch based on CR. The method comprises: determining, by a cognitive base station, a candidate working frequency point for UE deployed in a cognitive frequency band; then sending to the UE broadcast information which at least carries the candidate working frequency point and instructing the UE to switch from the working frequency point currently used thereby to the candidate working frequency point by way of a frequency point switching command. In this way, the UE deployed in the cognitive frequency band can achieve frequency point switch quickly and accurately according to the instruction from the cognitive base station when an incumbent user accesses the working frequency point currently used by the UE, effectively avoiding interference to the incumbent user and thereby ensuring the service performance and service continuity of the system. The present application also discloses a corresponding device and system.

Method, device and system for implementing frequency point switch based on CR

A method to support dissymmetry service for multicarrier time division duplexing mobile communication system, which contains adopting different uplink and downlink time gap conversion point to support dissymmetry service among multicarrier frequency of different cells and same cell, when the original configured uplink and downlink time gap ratio can not support the service request, then changing the time gap ratio to receiving said request, adjusting service to avoid interference by quick dynamic channel distribution technology, in ending request service, changing time gap ratio in original ratio. Said invention supports different uplink and downlink time gap conversion point, the base station equipment needs establishing isolated uplink and downlink.

Method for supporting asymmetric service flexible in multi-carrier time division duplex mobile communication system

The present invention discloses a method for suppressing cross-slot interference in a time-slotted CDMA system. The method includes: determining, by a base station, positions of cross slots according to configuration information of local cell and configuration information of co-frequency adjacent cells, and performing multi-cell channel estimation on the cross slots to obtain channel estimation results; determining, by the base station, code channel configuration information of the co-frequency adjacent cells, grouping the determined code channels and determining the code channels of the co-frequency adjacent cells involved in a joint detection; and performing, by the base station, the joint detection according to the multi-cell information estimation results and the determined code channels of the base stations involved in the joint detection to obtain detection data. With the present invention, interference from a base station transmitting downlink signals in cross slots to a base station receiving uplink signals in the corresponding slot may be reduced, and the system capacity and the stability may be improved.

Method for restraining cross-slot interference in slot CDMA system

The present invention relates to a method for measuring interference power in a time slot CDMA system, The method includes: performing channel estimation for received signals with channel estimation codes, to obtain the original channel response estimation results h, i=1 . . . P; predetermining a threshold of number of taps W, and selecting the channel response estimation results for Wtaps with less power from the original channel response estimation results hfor Was the roughly estimated result of the interference power; performing threshold processing on the original channel response estimation results by post-processing against signal-to-noise ratio threshold, by using the roughly estimated result of the interference power and the predetermined signal-to-noise ratio threshold, before processing compensating the possible error generated from rough estimation of the interference power and performing threshold processing with the compensated power threshold, so as to ultimately obtain an accurate measured result of the interference power.

Method for measuring interference power in time-slot CDMA system

A handover method in a mobile communication system, wherein, while maintaining communication with a certain base station before handover, a mobile terminal measures signals of adjacent cells and confirms the candidate handover target base stations; the mobile terminal sends measurement report to network; inserting the procedure of pre-synchronization between the mobile terminal and the handover target base station, including: while sending measurement report to the network, the mobile terminal sends training sequence to the handover target base station; after receiving the training sequence, the handover target base station sends training sequence response message to the mobile terminal; the mobile terminal maintains open-loop or closed-loop synchronization with the handover target base station; the network sends handover command to the mobile terminal; the mobile terminal directly switches to the handover target base station according the handover command; wireless link between the mobile terminal and the handover-forward base station is released. By pre-acting wireless link synchronization establishment in handover before measuring stage, handover process time is reduced, system sources are saved, and handover reliability and quality are improved as well.

Handover method in mobile communication system

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Beijing, China

Jinling Hu