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Method and apparatus for carrier synchronization

A carrier synchronization and carrier technology, applied in the field of communication, can solve problems such as low resource utilization, and achieve the effect of improving resource utilization

Inactive Publication Date: 2014-01-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the UE cannot know whether the currently configured new carrier is a synchronous new carrier or an asynchronous new carrier, resulting in relatively low resource utilization, the present invention provides a carrier synchronization method and device to at least solve this problem

Method used

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  • Method and apparatus for carrier synchronization
  • Method and apparatus for carrier synchronization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] This preferred embodiment provides three methods for distinguishing new carrier types, so that the UE can distinguish whether the new carrier is a synchronous or asynchronous carrier, and receives a synchronization signal on the non-synchronized carrier to complete the carrier synchronization process.

[0094] The method in this preferred embodiment comprises the steps: Figure 9 It is the process of carrier synchronization according to the preferred embodiment of the present invention Figure 1 ,Such as Figure 9 As shown, the method includes step S902 and step S904.

[0095] Step S902: the base station instructs the UE that the new carrier is a synchronous or asynchronous new carrier.

[0096] Step S904: The UE receives the synchronization signal on the new non-synchronized carrier according to the instruction of the base station to complete the synchronization of the new carrier.

[0097] The above steps can be realized through the following three methods.

[009...

Embodiment 2

[0110] This preferred embodiment provides a method for carrier synchronization. In this preferred embodiment, it distinguishes whether the configured new carrier is a synchronous new carrier or a non-synchronized new carrier according to a predetermined rule, so that after the UE is configured with a new carrier, it can The corresponding indication determines whether it is necessary to receive synchronization information to complete the synchronization of the new carrier.

[0111] The frequency division duplex mode (Frequency Division Duplex, FDD for short) is taken as an example for description below.

[0112] Such as Figure 8 As shown, carrier 1 (downlink frequency point f1, uplink frequency point f1'), referred to as CC1 (DL f1, UL f1'), the serving cell is a compatible cell; carrier 2 (downlink frequency point f2), referred to as CC2 ( DLf2) is a new carrier; carrier 3 (downlink frequency point f3), referred to as CC3 (DLf3); user equipment UE camps on CC1 and initiates ...

example 1

[0114] Example 1: Corresponding to the first method of the above-mentioned preferred embodiment, the method includes the following steps S302 to S310.

[0115] Step S302: the UE initiates an RRC connection on CC1, and completes the UE's access in CC1.

[0116] Step S304: The base station sends an RRC connection reconfiguration message to the UE on CC1, the message carries configuration information of CC2 and CC3, and carries information indicating the carrier types of CC2 and CC3, that is, the configuration of CC2 carries information indicating that CC2 is a new carrier for synchronization Marker bit information, the configuration of CC3 carries the flag bit information indicating that CC3 is an asynchronous new carrier.

[0117] Step S306: After receiving the RRC message, the UE applies configurations to CC2 and CC3 respectively, and starts a synchronization process of CC3 on CC3.

[0118] Step S308: After a period of time, the base station sends an RRC connection reconfigur...

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Abstract

The invention discloses a method and apparatus for carrier synchronization. The method comprises the following steps that: an indication for indicating a new carrier wave as a synchronous new carrier and / or a nonsynchronous new carrier wave is carried in a message of a base station; and the base station sends the message to user equipment (UE) so as to trigger the UE to carry out carrier synchronization on the nonsynchronous new carrier wave. According to the invention, the resource utilization rate is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a carrier synchronization method and device. Background technique [0002] With the development of the mobile communication industry and the increasing demand for mobile data services, people have higher and higher requirements for the speed and quality of service (Quantity of Service, Qos) of mobile communication. (3rdGeneration, referred to as 3G) has not yet been commercialized on a large scale, it has already started the research and development of the next generation mobile communication system, which is more typical of the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP) ) launched the Long Term Evolution (referred to as LTE) project, the highest spectrum bandwidth that the LTE system can provide is 20MHz (megahertz). With the further evolution of the network, LTE-A (Evolved LTE), as an evolution system of LTE, can provide up t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04L27/26
Inventor 万璐苟伟黄亚达陈中明刘扬
Owner ZTE CORP
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