Method for selecting a main carrier and related equipment

A main carrier and equipment technology, applied in the field of main carrier selection method and related equipment, can solve the problems of increased system signaling overhead and UE power consumption, and achieve the effect of reducing system signaling overhead

Inactive Publication Date: 2010-10-27
CHINA MOBILE COMM GRP CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

If the LTE-A system follows the design principle of the existing LTE system and regards all CCs as equal, then system information and control information can be transmitted on any CC, then the UE in the LTE-A system needs to monitor and receive Information on all CCs in the cell, resulting in an increase in system signaling overhead and an increase in UE power consumption

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  • Method for selecting a main carrier and related equipment
  • Method for selecting a main carrier and related equipment
  • Method for selecting a main carrier and related equipment

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Embodiment Construction

[0022] The inventor found in the process of the invention that the main carrier mode of the cell and the main carrier mode of the user have their own advantages and disadvantages, and they are briefly introduced as follows:

[0023] For the cell main carrier mode, its advantage is that it only needs to broadcast the selected main carrier to all UEs in the cell in the system information, which is simple to implement and has relatively small system signaling overhead. For the main carrier mode of the cell, its disadvantage is: for the UE in the RRC-connection state (RRC-connection), the dedicated control information of all UEs in the cell is transmitted on the same CC (that is, the main carrier), and a large amount of dedicated control information As a result, the control information load on each CC in the cell is uneven, thereby reducing system performance; secondly, even if the UE's data information is not transmitted on the main carrier, the UE needs to monitor the main carrie...

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Abstract

The invention discloses a method for selecting a main carrier and related equipment, which are used for solving the problem of selecting a proper main carrier for user equipment. The method for selecting the main carrier of the invention comprises that: a base station designates member carriers as the main carriers of all sets of user equipment (UE) in a radio resource control (RRC) idle state; and the base station sends cell main carrier configuration information to the UE, wherein the cell main carrier configuration information comprises the frequency point information of the designated member carriers and is used for instructing the UE to monitor the designated member carriers in the RRC idle state. In the invention, the base state adopts a cell main carrier mode for the UE in the RRC idle state, so the system signaling cost and UE power consumption are reduced effectively.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for selecting a main carrier and related equipment. Background technique [0002] A carrier aggregation (Carrier Aggregation, CA) technology is an important candidate solution for a Long Term Evolution-Advanced (LTE-A) system to support broadband transmission. CA technology refers to the division of a continuous or discrete frequency spectrum into multiple logical component carriers (Component Carrier, CC). In the LTE-A system, the uplink and downlink of a cell includes multiple CCs. The user equipment (User Equipment) in the LTE-A system Equipment, UE) can receive or send data on multiple CCs at the same time. The schematic diagram of carrier aggregation in LTE-system is as follows figure 1 As shown, wherein the UE can simultaneously receive data on N downlink CCs and send data on M uplink CCs. Since the uplink and downlink of a cell in the LTE system each include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/10H04W68/00H04W72/02H04W72/08H04W88/02H04W88/08
CPCY02B60/50Y02D30/70
Inventor 王军杨宁胡南
Owner CHINA MOBILE COMM GRP CO LTD
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