CN101540978A

CN101540978A - Downlink component carrier wave identification method, synchronous downlink component carrier wave reporting method and device

Info

Publication number: CN101540978A
Application number: CN200910083050A
Authority: CN
Inventors: 朱鹏; 郝鹏; 喻斌; 张戎
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-04-27
Filing date: 2009-04-27
Publication date: 2009-09-23
Anticipated expiration: 2029-04-27
Also published as: CN101540978B

Abstract

The invention discloses a downlink component carrier wave identification method, including the followings: the system information of each downlink component carrier wave in a set of downlink component carrier waves at least includes frequency point information bearing the downlink component carrier wave of random access response, or includes frequency point bearing the downlink component carrier wave of random access response and bandwidth information thereof; or at least includes identification information bearing the downlink component carrier wave of random access response, and the identification information and frequency point information of each downlink component carrier wave, or the identification information, frequency point and bandwidth information of each downlink component carrier wave. Or, the corresponding relation between each downlink component carrier wave of a set of downlink component carrier waves and random access leader sequence is set, and the system information of each downlink component carrier wave in a set of downlink component carrier wave at least includes self-identification information and the number information of downlink component carrier wave in a set of downlink component carrier waves. Simultaneously, the invention also discloses a reporting method and a device of synchronous downlink component carrier wave. The invention is simply realized and is practical.

Description

Identification method of downlink component carrier wave, DL synchronization component carrier wave report method and device

Technical field

The present invention relates to the sign of downlink component carrier and report technology, relate in particular to the identification method of downlink component carrier in a kind of advanced long-term evolution system (LTE-A, Long Term Evolution-Advanced) and the report method and the device of DL synchronization component carrier wave.

Background technology

The LTE-A system is the evolution system of future generation of Long Term Evolution (LTE, Long Term Evolution) system.Fig. 1 is the schematic diagram of carrier aggregation and component carrier relation in the LTE-A system, and as shown in Figure 1, the LTE-A system adopts carrier aggregation (Carrier Aggregation claims carrier wave to assemble again) technological expansion transmission bandwidth, to obtain higher data rate.The carrier wave of each polymerization is called one-component carrier wave (ComponentCarrier).Component carrier can be continuous on frequency spectrum, also can be discontinuous.

The downstream transmission bandwidth of LTE-A system is polymerized by a plurality of downlink component carriers; The uplink bandwidth may only comprise a upstream components carrier wave, also may be formed by a plurality of upstream components carrier aggregation.It is the component carrier that system's uplink and downlink bandwidth may comprise different numbers.Even the number of system's uplink and downlink component carrier is identical, to certain user terminal (UE, User Equipment), the component carrier number that the component carrier number that its descending reception bandwidth comprises comprises with up transmission bandwidth also may be different.The situation that uplink and downlink component carrier quantity does not wait is called asymmetric carrier wave and assembles.

Can send synchronizing signal (Synchronization Signal) on the downlink component carrier of LTE-A system and carry broadcast channel." broadcast channel " on downlink component carrier is meant the channel of the broadcast of having carried certain component carrier or certain several component carrier or whole sub-district herein, and these message can be had a certain same alike result in whole user terminals in the sub-district or the sub-district all user terminals receive.In addition, broadcast channel can refer to the physical channel of physical layer, also can refer to the transmission channel of MAC sublayer (media access control sublayer) or the logic channel of RRM sublayer (Radio Resource control (RRC, Radio Resource Control) layer).The broadcast of broadcast channels carry common is also referred to as system information (SystemInformation).

The system information of LTE system is by Master Information Block (MIB, Master Information Block) and a series of system information block (SIB, System Information Block) carrying.Wherein, MIB comprises some the most basic system informations, comprises configuration information, System Frame Number of downlink system bandwidth, physical down HARQ indicating channel (PHICH) etc.MIB sent in Physical Broadcast Channel (PBCH, Physical BroadcastChannel) the last cycle.

SIB is divided into 11 classes (SystemInformationBlockType 1～11) according to content, and goes up transmission at Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel).Wherein, SystemInformationBlockType2 (SIB-2) has comprised the wireless resource configuration (radioresource configuration information) of this sub-district, comprising frequency point information (can be default), the up-link bandwidth of up-link carrier, and insert configuration parameter at random.

Fig. 2 is the flow chart that inserts at random in the LTE system, as shown in Figure 2, user terminal is according to the configuration parameter of access at random among the SIB-2, go up to base station transmission random access guiding (Random Access Preamble) at selected Physical Random Access Channel (PRACH, Physical RandomAccess Channel).After the base station receives random access guiding, utilize random access leader sequence wherein, calculate Timing Advance, and be used in next step channel transmitted resource and Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number (C-RNTI to this user terminal branch, Cell Radio Network Temporary Identifier), send through Physical Downlink Shared Channel, be called accidental access response (Random Access Response).User terminal is after receiving accidental access response, according to the capable physically shared channel (PUSCH of the signal channel resource allocation information in the accidental access response, Physical Uplink Shared Channel) sends (the First scheduled ULtransmission of dispatching uplink transmission first on, be abbreviated as scheduled transmission, be called Message 3 again, be abbreviated as Msg 3).Msg 3 includes different information according to the incident that triggers this random access procedure is different, comprises such as RRC connection request (RRC Connection Request), C-RNTI or the like.When this random access procedure is based on competition, the base station receives that also will solve message (ContentionResolution) by its content feed competition behind the Msg 3 gives user terminal, be called Message 4, is abbreviated as Msg 4.

The LTE system uses the cyclically shifted sequences of Zadoff-Chu (being called for short ZC) sequence as random access leader sequence.These ZC sequences are called the root sequence again, and these cyclically shifted sequences are called zero correlation zone (ZCZ, Zero Correlation Zone) sequence again.The logic index that at random insert in configuration parameter informing user terminal this cellular PRACH operable article one ZC sequence of base station in SIB-2 and the step-length of cyclic shift (being the cyclic shift amount).User terminal obtains the physics index of this sequence according to certain mapping ruler from the logic index of article one root sequence, generates available ZCZ sequence according to cyclic shift amount and certain " cyclic shift restriction rule " then.These cyclic shift restriction rules are enabled by cyclic shift restriction sign.(in the LTE system, T=64), then the automatic increasing sequence logic of user terminal index utilizes next bar ZC sequence to continue to generate the ZCZ sequence, till the sum of ZCZ sequence equals above-mentioned threshold value if the quantity of ZCZ sequence is less than threshold T.The T bar ZCZ sequence that is generated is according to the sequencing label that generates, and is called random access leader sequence number, and the sequence number value is 0,1 ..., T-1.At last, user terminal selects one to send as random access leader sequence by certain rule in the available ZCZ sequence of all generations.

In the LTE-A system, the system information on a plurality of downlink component carriers may have been notified the frequency and the bandwidth information of same upstream components carrier wave, and promptly a plurality of downlink component carriers may be corresponding to same upstream components carrier wave.In random access procedure, when the base station detected the random access leader sequence that sends on this upstream components carrier wave, the user terminal of this signal can't be determined to send synchronously on which downlink component carrier in the base station.So the base station need send corresponding to same leading accidental access response on all corresponding downlink component carriers.In like manner, when the base station detected the Msg 3 that sends on this upstream components carrier wave, the user terminal of this signal can't be determined to send synchronously on which downlink component carrier in the base station.So the base station need send competition and solve message Msg 4 on all corresponding downlink component carriers.After if random access procedure finishes, the base station still can't determine this user terminal synchronous downlink component carrier, follow-up downstream signal and/or downlink signaling may also need send on a plurality of downlink component carriers.This will cause the serious waste of system resource.

Therefore, in the LTE-A system, the base station how to determine to send on which downlink component carrier accidental access response and/or competition solution message Msg 4 becomes a problem demanding prompt solution.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of identification method and report method and device of downlink component carrier, make network side can determine user terminal synchronous downlink component carrier, and on this downlink component carrier, send accidental access response and compete solution message, perhaps make user terminal can determine that network side sends the downlink component carrier of accidental access response, and on this downlink component carrier receiving random access response.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of identification method of downlink component carrier comprises:

At least the frequency point information that comprises the downlink component carrier that carries accidental access response in the system information corresponding to each downlink component carrier in one group of downlink component carrier of a upstream components carrier wave perhaps comprises the frequency and the bandwidth information thereof of the downlink component carrier that carries accidental access response; The identification information that perhaps comprises the downlink component carrier that carries accidental access response at least, and identification information, frequency and the bandwidth information thereof of each downlink component carrier in the identification information of each downlink component carrier in described one group of downlink component carrier and frequency point information or the described one group of downlink component carrier; And

Described system information is sent to user terminal.

Preferably, in the system information of the downlink component carrier of carrying accidental access response, the frequency point information of the downlink component carrier of described carrying accidental access response or frequency and bandwidth information thereof are default value, and the identification information that perhaps carries the downlink component carrier of accidental access response is a default value.

Preferably, the number of the downlink component carrier of carrying accidental access response is one in described one group of downlink component carrier.

Preferably, described method also comprises:

The competition of network side solves message bearing on the downlink component carrier of described carrying accidental access response.

Preferably, also comprise the information of determining self identity in described one group of downlink component carrier in the system information of each downlink component carrier.

Preferably, describedly determine that the information of self identity is the identification number of downlink component carrier.

Preferably, describedly determine that the information of self identity is:

The identification information of each downlink component carrier in described one group of downlink component carrier and frequency point information or its frequency and bandwidth information, wherein identification information of self and frequency point information thereof or its frequency and bandwidth information are default value.

Preferably, the identification information of described downlink component carrier is the identification number of downlink component carrier.

Preferably, described method also comprises:

User terminal to send up self the identification number of synchronous downlink component carrier, the competition of network side solve message bearing in described user terminal on the synchronous downlink component carrier.

Preferably, described one group of downlink component carrier corresponding to a upstream components carrier wave is: the more than one downlink component carrier of having notified frequency point information or the frequency and the bandwidth information of same upstream components carrier wave.

Preferably, the identification number and the frequency point information thereof that also comprise each downlink component carrier of institute's polymerization in the cellular downlink in the system information of each downlink component carrier in described one group of downlink component carrier, the identification number and the frequency point information thereof that perhaps comprise each downlink component carrier of institute's polymerization in the cellular downlink, and the corresponding relation of uplink and downlink component carrier.

Preferably, described system information is carried among the system information block SIB that comprises the cell radio resource configuration information, and described SIB sends on Physical Downlink Shared Channel.

A kind of identification method of downlink component carrier comprises:

At least comprise the information of determining self identity in the system information corresponding to each downlink component carrier in one group of downlink component carrier of a upstream components carrier wave; And

Described system information is sent to user terminal.

Preferably, describedly determine that the information of self identity is:

The identification information and the frequency point information thereof of each downlink component carrier in described one group of downlink component carrier, wherein identification number of self and frequency point information thereof are default value.

Preferably, described method also comprises:

Preferably, all carry accidental access response in each downlink component carrier in described one group of downlink component carrier corresponding to same random access guiding.

A kind of identification method of downlink component carrier comprises:

Setting is corresponding to each downlink component carrier in one group of downlink component carrier of a upstream components carrier wave and the corresponding relation of random access leader sequence, comprises the information of downlink component carrier number in the information of determining self identity, the described one group of downlink component carrier in the system information of each downlink component carrier in described one group of downlink component carrier at least; And

Described system information is sent to user terminal.

Preferably, describedly determine that the information of self identity is:

The identification information and the frequency point information thereof of each downlink component carrier in described one group of downlink component carrier, wherein identification information of self and frequency point information thereof are default value.

Preferably, described method also comprises:

After being synchronized to downlink component carrier, user terminal obtain the identification number of synchronous downlink component carrier, described user terminal select one and send in the random access leader sequence of synchronous downlink component carrier correspondence.

Preferably, each downlink component carrier in described one group of downlink component carrier and the corresponding relation of random access leader sequence are specially:

Downlink component carrier number in the sequence number of described random access leader sequence and the described downlink component carrier group carries out delivery and calculates, and the random access leader sequence of each mould value correspondence is corresponding with a downlink component carrier in the described downlink component carrier group.

A kind of report method of DL synchronization component carrier wave comprises:

User terminal be synchronized to downlink component carrier and determine the identification number of synchronous downlink component carrier, corresponding relation according to each downlink component carrier and random access leader sequence in the downlink component carrier group of prior setting, select described user terminal in the random access leader sequence of synchronous downlink component carrier correspondence one, be sent to network side; Wherein, described downlink component carrier group is all downlink component carriers corresponding to a upstream components carrier wave.

Preferably, the corresponding relation of each downlink component carrier and random access leader sequence in the downlink component carrier group of described prior setting is specially:

A kind of reporting device of DL synchronization component carrier wave comprises:

Lock unit is used to be synchronized to downlink component carrier;

Determining unit, be used to determine described lock unit the identification number of synchronous downlink component carrier;

Memory cell is used for storing each downlink component carrier of downlink component carrier group of prior setting and the corresponding relation of random access leader sequence; Wherein, described downlink component carrier group is all downlink component carriers corresponding to a upstream components carrier wave;

Selected cell is used for each downlink component carrier of downlink component carrier group stored according to described memory cell and the corresponding relation of random access leader sequence, select in the random access leader sequence of synchronous downlink component carrier correspondence one; And

Transmitting element is used for the selected random access leader sequence of described selected cell is sent to network side.

The present invention comprises the frequency point information of the downlink component carrier that carries accidental access response at least in the system information corresponding to each downlink component carrier in one group of downlink component carrier of same upstream components carrier wave, so that the user terminal that is synchronized on this group downlink component carrier can receiving random access response Msg 2.In one group of downlink component carrier corresponding to same upstream components carrier wave, the downlink component carrier of carrying accidental access response only is one, needn't all carry accidental access response in each downlink component carrier in the whole downlink component carrier group.The identification information that can also comprise self in the system information of each downlink component carrier in described group of downlink component carrier, so that the user terminal that is synchronized to downlink component carrier by system information promptly determine synchronous downlink component carrier, like this, user terminal informing network side its synchronous downlink component carrier get final product.Network side determine user terminal behind the synchronous downlink component carrier, the downlink data of this user terminal by its carrying of synchronous downlink component carrier get final product, all carry the downlink data of user terminal in needn't each downlink component carrier in described group, save Radio Resource, improved the access capacity of system.Perhaps, the identification information that only comprises indicating self in the system information corresponding to each downlink component carrier in one group of downlink component carrier of same upstream components carrier wave, each downlink component carrier in one group of downlink component carrier all carries accidental access response, like this, user terminal in Msg 3, report self synchronous downlink component carrier, network side utilize user terminal synchronous downlink component carrier send Msg 4; Perhaps, utilize each downlink component carrier in one group of downlink component carrier and the corresponding relation of random access leader sequence, in Msg 1 promptly the sequence number informing network side user terminal by random access leader sequence synchronous downlink component carrier.The present invention realizes simple and practical.

Description of drawings

Fig. 1 is the schematic diagram of carrier aggregation and component carrier relation in the LTE-A system;

Fig. 2 is the flow chart that inserts at random in the LTE system;

Fig. 3 is the flow chart of the report method of DL synchronization component carrier wave of the present invention;

Fig. 4 is the composition structural representation of the reporting device of DL synchronization component carrier wave of the present invention.

Embodiment

Basic thought of the present invention is: comprise the frequency point information of the downlink component carrier that carries accidental access response at least in the system information corresponding to each downlink component carrier in one group of downlink component carrier of same upstream components carrier wave, so that the user terminal that is synchronized on the downlink component carrier can receiving random access response Msg 2.In one group of downlink component carrier corresponding to same upstream components carrier wave, the downlink component carrier of carrying accidental access response only is one, needn't all carry accidental access response in each downlink component carrier in the whole downlink component carrier group.The identification information that can also comprise self in the system information of each downlink component carrier in described group of downlink component carrier, so that the user terminal that is synchronized to downlink component carrier by system information promptly determine synchronous downlink component carrier, like this, user terminal informing network side its synchronous downlink component carrier get final product.Network side determine user terminal behind the synchronous downlink component carrier, the downlink data of this user terminal by its carrying of synchronous downlink component carrier get final product, all carry the downlink data of user terminal in needn't each downlink component carrier in described group, save Radio Resource, improved the access capacity of system.

Perhaps, the identification information that only comprises indicating self in the system information corresponding to each downlink component carrier in one group of downlink component carrier of same upstream components carrier wave, each downlink component carrier in one group of downlink component carrier all carries accidental access response, like this, user terminal in Msg 3, report self synchronous downlink component carrier, network side utilize user terminal synchronous downlink component carrier send Msg 4;

Perhaps, utilize each downlink component carrier in one group of downlink component carrier and the corresponding relation of random access leader sequence, in Msg 1 promptly the sequence number informing network side user terminal by random access leader sequence synchronous downlink component carrier.The present invention realizes simple and practical.

For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.

Illustrate at first how the present invention realizes the downlink component carrier sign.

As described in the background art, when plural downlink component carrier during corresponding to same upstream components carrier wave, network side can not tell user terminal synchronous downlink component carrier which is on earth, like this, the downlink data that mails to user terminal will be carried in all downlink component carriers corresponding to same upstream components carrier wave, will cause the serious waste of resource.For economizing on resources, the present invention comprises the frequency point information of the downlink component carrier that carries accidental access response in the system information corresponding to each downlink component carrier in the downlink component carrier group of same upstream components carrier wave, or frequency and bandwidth information, like this, user terminal can be intercepted accidental access response Msg 2 and Msg4 on the downlink component carrier of carrying accidental access response.Can also in the system information of each downlink component carrier in the above-mentioned downlink component carrier group, comprise the information of determining self identity, like this, which downlink component carrier user terminal is synchronized to, by system information wherein can determine synchronous downlink component carrier.The information of determining the downlink component carrier identity comprises the identification number of downlink component carrier.Perhaps, the information of determining the downlink component carrier identity is: the identification information of each downlink component carrier in described one group of downlink component carrier and frequency point information or its frequency and bandwidth information, wherein identification information of self and frequency point information thereof or its frequency and bandwidth information are default value.Determine user terminal the information of synchronous downlink component carrier identity, can with the frequency point information of the downlink component carrier of aforesaid carrying accidental access response, or frequency and bandwidth information be used in combination, and determines the identity of downlink component carrier jointly.Wherein, in the system information of the downlink component carrier of carrying accidental access response: the identification information of the downlink component carrier of carrying accidental access response is a default value, and perhaps frequency point information is a default value, and perhaps the information of frequency and bandwidth is default value.User terminal according to the system information of synchronous downlink component carrier determine behind the synchronous downlink component carrier identification information, report to network side, network side determine user terminal synchronous downlink component carrier, and use this downlink component carrier to send the downlink data of user terminal.

The present invention also can realize by another program: the identification information that comprises self in the system information corresponding to each downlink component carrier in one group of downlink component carrier of a upstream components carrier wave at least; All carry accidental access response in each downlink component carrier in described one group of downlink component carrier.The identification information of downlink component carrier is the information of energy indicating self identity, identification number as descending component carrier, perhaps, comprise the frequency of downlink component carrier and the corresponding relation of downlink component carrier in the system information, user terminal pass through the frequency point information of synchronous downlink component carrier can determine synchronous downlink component carrier.

The present invention also can realize by another scheme: be provided with corresponding to each downlink component carrier in one group of downlink component carrier of a upstream components carrier wave and the corresponding relation of random access leader sequence, comprise the information of downlink component carrier number in the identification information of self, the described one group of downlink component carrier in the system information of each downlink component carrier in described one group of downlink component carrier at least.After being synchronized to downlink component carrier, user terminal obtain the identification information of synchronous downlink component carrier, described user terminal select one and send in the random access leader sequence of synchronous downlink component carrier correspondence.Network side by the random access leader sequence that user terminal sent can determine user terminal synchronous downlink component carrier.Wherein, each downlink component carrier in one group of downlink component carrier and the corresponding relation of random access leader sequence, calculate for: the downlink component carrier number in the sequence number of described random access leader sequence and the described downlink component carrier group carries out delivery, the random access leader sequence of each mould value correspondence is corresponding with a downlink component carrier in the described downlink component carrier group.

Among the present invention, system information is carried in the system information block that comprises the cell radio resource configuration information, and system information block sends on Physical Downlink Shared Channel.

Below in conjunction with specific embodiment, describe technical scheme of the present invention in detail.

Embodiment one

Suppose a LTE-A system, be operated under Frequency Division Duplexing (FDD) (FDD, the Frequency Division Duplex) pattern, two downlink component carriers are arranged in the system, and the frequency of downlink component carrier 1 is f1, and bandwidth is B1, the frequency of downlink component carrier 2 is f2, and bandwidth is B2; 1 upstream components carrier wave is arranged, and the frequency of upstream components carrier wave 1 is f3, and bandwidth is B3.Downlink component carrier 1, downlink component carrier 2 are corresponding to upstream components carrier wave 1, and downlink component carrier 1, downlink component carrier 2 are one group.

Carry following information in the system information of downlink component carrier 1,2:

1) the frequency f3 of upstream components carrier wave 1 and bandwidth B 3;

2) configuration parameter of access at random on the upstream components carrier wave 1;

3) downlink component carrier identification number; Wherein, the downlink component carrier identification number is 0 in the system information on the downlink component carrier 1, and the downlink component carrier identification number is 1 in the system information on the downlink component carrier 2.

The user terminal down-going synchronous is in downlink component carrier 1, the base station is behind the random access guiding that receives the user terminal transmission, because the terminal synchronizes that can't determine to send this signal is on downlink component carrier 1 or downlink component carrier 2, the base station all sends on

downlink component carrier

1,2 and this leading corresponding accidental access response.

After user terminal is received accidental access response, send first dispatching uplink transmission Msg 3, and in Msg 3, carry its downlink component carrier identification number 0 of synchronous downlink component carrier 1.

After Msg 3 is received in the base station,, can judge terminal synchronizes on downlink component carrier 1, and on this downlink component carrier, send competition solution message Msg 4 according to downlink component carrier identification number 0 wherein.

Here, self downlink component carrier identification number of carrying only is exemplary explanation in the system information of

downlink component carrier

1,2, any information of determining himself identity all alternative system information the 3rd).For example, can identify downlink component carrier by the mode of removing all the downlink component carrier identification numbers in the downlink component carrier group of self identification extra, still above example describes, the number of included downlink component carrier is determined in the downlink component carrier group, under the situation that the downlink component carrier identification number is continuous and the initial numerical value of identification number is determined, all downlink component carrier identification numbers in the downlink component carrier group of portability except that self downlink component carrier identification number in the system information, the downlink component carrier identification number that user terminal passes through to be lacked can be determined the identity of self.Perhaps, the corresponding relation that frequency by setting downlink component carrier and bandwidth information and downlink component carrier identify, user terminal pass through the frequency and the bandwidth information of synchronous downlink component carrier can determine its identification number.

Embodiment two

Suppose a LTE-A system, be operated under the fdd mode that two downlink component carriers are arranged in the system, the frequency of downlink component carrier 1 is f1, and bandwidth is B1, and the frequency of downlink component carrier 2 is f2, and bandwidth is B2; A upstream components carrier wave is arranged, and the frequency of upstream components carrier wave 1 is f3, and bandwidth is B3.Downlink component carrier 1, downlink component carrier 2 are corresponding to upstream components carrier wave 1, and downlink component carrier 1, downlink component carrier 2 are one group.

1) the frequency f3 of upstream components carrier wave 1 and bandwidth B 3;

3) the downlink component carrier identification number 0 of downlink component carrier 1, frequency f1, bandwidth B 1; The downlink component carrier identification number 1 of downlink component carrier 2, frequency f2, bandwidth are B2; Wherein, information such as the downlink component carrier identification number of downlink component carrier 1, frequency, bandwidth are default in the system information of downlink component carrier 1, and information such as the downlink component carrier identification number of downlink component carrier 2, frequency, bandwidth are default in the system information of downlink component carrier 2;

4) the downlink component carrier identification number of the downlink component carrier of the current transmission accidental access response in base station.In

downlink component carrier

1,2, choose one and send accidental access response, in this example, send accidental access response by downlink component carrier 2, the identification number that comprises downlink component carrier 2 in the system information of

downlink component carrier

1,2, wherein, in the system information of downlink component carrier 2, the identification number that sends the downlink component carrier of accidental access response is a default value.

The user terminal down-going synchronous is in downlink component carrier 1, determine the downlink component carrier identification number 1 of the downlink component carrier 2 that comprises in the system information, according in the system information the identification number of default downlink component carrier, determine user terminal synchronous downlink component carrier identification number 0, promptly downlink component carrier 1.Here, downlink component carrier number in the system is determined, be 2, and the identification number of downlink component carrier is from 0 open numbering, in each downlink component carrier the identification number of default downlink component carrier be user terminal current the identification number of synchronous downlink component carrier.Default among the present invention can be set to spacing wave on corresponding bearer resource, or acquiescence or the identification information set.

User terminal is by reading described system information, obtain the downlink component carrier identification number 1 of the downlink component carrier 2 of current transmission accidental access response, downlink component carrier identification number 1, frequency in conjunction with the downlink component carrier 2 that carries in the described system information are f2, bandwidth B 2, obtain sending the frequency f2 and the bandwidth B 2 of the downlink component carrier 2 of accidental access response, switch to then on the downlink component carrier 2 and wait for receiving random access response.

User terminal sends random access guiding to the base station according to the configuration parameter of access at random in the system information on the Physical Random Access Channel of upstream components carrier wave 1.

The base station is configured in transmission and this leading corresponding accidental access response on the downlink component carrier 2 by high-level signaling behind the random access guiding that receives the user terminal transmission.

After user terminal is received accidental access response, send first dispatching uplink transmission Msg 3, and in Msg 3, carry its downlink component carrier identification number 0 of synchronous downlink component carrier 1.User terminal switches back waits on the downlink component carrier 1 that receiving competition solves message Msg 4.

After Msg 3 is received in the base station,, judge user terminal synchronously on downlink component carrier 1, and on this downlink component carrier, send competition and solve message Msg 4 according to downlink component carrier identification number 0 wherein.

The user terminal down-going synchronous is in downlink component carrier 2, determine the downlink component carrier identification number 0 of the downlink component carrier 1 that comprises in the system information, according in the system information the identification number of default downlink component carrier, determine its downlink component carrier identification number 1 of synchronous downlink component carrier 2.

The user terminal down-going synchronous is in downlink component carrier 2, the downlink component carrier identification number of downlink component carrier of determining current transmission accidental access response in the system information is default, determine the base station user terminal send accidental access response on the synchronous downlink component carrier.User terminal does not carry the downlink component carrier that switching is intercepted, receiving random access response.

After user terminal is received accidental access response, send first dispatching uplink transmission Msg 3, and in Msg 3, carry its downlink component carrier identification number 1 of synchronous downlink component carrier 2.And wait for that on downlink component carrier 2 receiving competition solves message Msg 4.

After Msg 3 is received in the base station,, judge user terminal synchronously on downlink component carrier 2, and on this downlink component carrier, send competition and solve message Msg 4 according to downlink component carrier identification number 1 wherein.

In this example, the frequency and the bandwidth information of the downlink component carrier of the identify label of each downlink component carrier and carrying transmission accidental access response also can identify by other modes in the downlink component carrier group.Embodiment three, four, five promptly is the other implementation of sign downlink component carrier.

Embodiment three

1) the frequency f3 of upstream components carrier wave 1 and bandwidth B 3;

3) the downlink component carrier identification number of downlink component carrier 1 be 0, frequency, f1, bandwidth, B1; The downlink component carrier identification number 1 of downlink component carrier 2, frequency f2, bandwidth B 2;

downlink component carrier

The user terminal down-going synchronous is in downlink component carrier 1, determine the downlink component carrier identification number 1 of the downlink component carrier of current transmission accidental access response, frequency and bandwidth in conjunction with each downlink component carrier of broadcasting in the described system information block, and corresponding downstream component carrier identification number, obtain sending the frequency f2 and the bandwidth B 2 of the downlink component carrier of accidental access response, switch to then on the downlink component carrier 2 and wait for receiving random access response.Here, downlink component carrier number in the system is determined, be 2, and the identification number of downlink component carrier is from 0 open numbering, in each downlink component carrier in the system information the identification number of default component carrier be user terminal current the identification number of synchronous downlink component carrier.

After user terminal is received accidental access response, send the Msg 3 of dispatching uplink transmission first, and wait for that on downlink component carrier 2 receiving competition solves message Msg 4.

After Msg 3 is received in the base station, on downlink component carrier 2, send competition and solve message Msg 4.

The user terminal down-going synchronous is in downlink component carrier 2, read described system information, the downlink component carrier identification number of downlink component carrier of determining current transmission accidental access response is default, determine the base station user terminal current send accidental access response on the synchronous downlink component carrier.User terminal need not to switch, and is going up the wait receiving random access response when the downlink component carrier (downlink component carrier 2) of preamble.

After Msg 3 is received in the base station, on this downlink component carrier, send competition and solve message Msg 4.

Embodiment four

Suppose a LTE-A system, be operated under the fdd mode, 4 downlink component carriers are arranged in the system, and the frequency of downlink component carrier 1 is f1, and bandwidth is B1, the frequency of downlink component carrier 2 is f2, bandwidth is B2, and the frequency of downlink component carrier 3 is f3, and bandwidth is B3, the frequency of downlink component carrier 4 is f4, and bandwidth is B4; 2 upstream components carrier waves are arranged, and the frequency of upstream components carrier wave 1 is f5, and bandwidth is B5, and the frequency of upstream components carrier wave 2 is f6, and bandwidth is B6.Downlink component carrier 1, downlink component carrier 2 are corresponding to upstream components carrier wave 1, downlink component carrier 3, downlink component carrier 4 are corresponding to upstream components carrier wave 2, downlink component carrier 1, downlink component carrier 2 are one group, and downlink component carrier 3, downlink component carrier 4 are one group.

1) the frequency f5 of upstream components carrier wave 1 and bandwidth B 5;

3) the downlink component carrier identification number of place downlink component carrier; Comprise downlink component carrier identification number 0 in the system information on the downlink component carrier 1, comprise downlink component carrier identification number 1 in the system information on the downlink component carrier 2.

4) frequency and the bandwidth information of the downlink component carrier of the current transmission accidental access response in base station.In the group at

downlink component carrier

1,2 places, choose one and send accidental access response, in this example, send accidental access response by downlink component carrier 2, then corresponding frequency and bandwidth information are f2 and B2 in the identification field on the downlink component carrier 1, and corresponding frequency and bandwidth information are default in the identification field on the downlink component carrier 2.

Carry following information in the system information of downlink component carrier 3,4:

1) the frequency f6 of upstream components carrier wave 2 and bandwidth B 6;

2) configuration parameter of access at random on the upstream components carrier wave 2;

3) the downlink component carrier identification number of place downlink component carrier; Comprise downlink component carrier identification number 0 in the system information on the downlink component carrier 3, comprise downlink component carrier identification number 1 in the system information on the downlink component carrier 4.

downlink component carrier

3,4 places, choose one and send accidental access response, in this example, by sending accidental access response on the downlink component carrier 4, then corresponding frequency and bandwidth information are f4 and B4 in the system information on the downlink component carrier 3, and corresponding frequency and bandwidth information are default in the system information on the downlink component carrier 4.

The user terminal down-going synchronous is in downlink component carrier 1, user terminal reads the system information of downlink component carrier 1, obtain the frequency f2 and the bandwidth B 2 of the downlink component carrier 2 of current transmission accidental access response, switch to then on the downlink component carrier 2 and wait for receiving random access response.

After user terminal is received accidental access response, send first dispatching uplink transmission Msg 3, and in Msg 3, carry its downlink component carrier identification number 0 of synchronous downlink component carrier 1.User terminal is determined current synchronous downlink component carrier identification number by reading downlink component carrier identification number information in the downlink component carrier system information, and identification number is 0 in this example.User terminal switches back waits on the downlink component carrier 1 that receiving competition solves message Msg 4.

After Msg 3 is received in the base station, according to downlink component carrier identification number 0 wherein, and the upstream components carrier wave 1 that carries this Msg 3, and the corresponding relation of uplink and downlink component carrier, judge user terminal synchronously on downlink component carrier 1, and on this downlink component carrier, send competition and solve message Msg 4.Here, the corresponding relation of uplink and downlink component carrier also can be determined by signs such as group number are set.

The user terminal down-going synchronous is in downlink component carrier 4, and then user terminal sends random access guiding on upstream components carrier wave 2.User terminal reads the system information of downlink component carrier 4, finds that the frequency and the bandwidth information of downlink component carrier of current transmission accidental access response is default, determine the base station user terminal send accidental access response on the synchronous downlink component carrier.User terminal need not to switch, receiving random access response on current synchronous downlink component carrier.

User terminal sends random access guiding to the base station according to the configuration parameter of access at random in the system information on the Physical Random Access Channel of upstream components carrier wave 2.

The base station is configured in transmission and this leading corresponding accidental access response on the downlink component carrier 4 by high-level signaling behind the random access guiding that receives the user terminal transmission.

After user terminal is received accidental access response, send first dispatching uplink transmission Msg 3, and in Msg 3, carry its downlink component carrier identification number 1 of synchronous downlink component carrier 4.User terminal waits for that on downlink component carrier 4 receiving competition solves message Msg 4.

After Msg 3 is received in the base station, according to downlink component carrier identification number 1 wherein, and the upstream components carrier wave 1 that carries this Msg 3, and the corresponding relation of uplink and downlink component carrier, judge user terminal synchronously on downlink component carrier 4, and on this downlink component carrier, send competition and solve message Msg 4.

Embodiment five

Suppose a LTE-A system, be operated under the fdd mode that 2 downlink component carriers are arranged in the system, the frequency of downlink component carrier 1 is f1, and bandwidth is B1, and the frequency of downlink component carrier 2 is f2, and bandwidth is B2; 1 upstream components carrier wave is arranged, and the frequency of upstream components carrier wave 1 is f3, and bandwidth is B3.Downlink component carrier 1, downlink component carrier 2 are corresponding to upstream components carrier wave 1, and downlink component carrier 1, downlink component carrier 2 are one group.

1) the frequency f3 of upstream components carrier wave 1 and bandwidth B 3;

3) frequency and the bandwidth information of the downlink component carrier of the current transmission accidental access response in base station.In the group at

downlink component carrier

1,2 places, choose one and send accidental access response, in this example, by sending accidental access response on the downlink component carrier 2, corresponding frequency and bandwidth information are f2 and B2 in downlink component carrier 1 the above identification field, and corresponding frequency and bandwidth information are default in downlink component carrier 2 the above identification field.

The user terminal down-going synchronous is in downlink component carrier 1, by reading the system information of downlink component carrier 1, obtain the frequency f2 and the bandwidth B 2 of the downlink component carrier 2 of current transmission accidental access response, switch to then on the downlink component carrier 2 and wait for receiving random access response.

The user terminal down-going synchronous is in downlink component carrier 2, by reading described system information, the frequency and the bandwidth information of downlink component carrier of finding current transmission accidental access response is default, determine the base station user terminal send accidental access response on the synchronous downlink component carrier.User terminal need not to switch, and waits for receiving random access response on current synchronous downlink component carrier.

Embodiment six

Suppose a LTE-A system, be operated under the fdd mode that 3 downlink component carriers are arranged in the system, the frequency of downlink component carrier 1 is f1, and bandwidth is B1, and the frequency of downlink component carrier 2 is f2, and bandwidth is B2, and the frequency of downlink component carrier 3 is f3, and bandwidth is B3; 1 upstream components carrier wave is arranged, and the frequency of upstream components carrier wave 1 is f4, and bandwidth is B4.Downlink component carrier 1, downlink component carrier 2, downlink component carrier 3 are corresponding to upstream components carrier wave 1, and downlink component carrier 1, downlink component carrier 2, downlink component carrier 3 are one group.

Carry following information in the system information of

downlink component carrier

1,2,3:

1) the frequency f4 of upstream components carrier wave 1 and bandwidth B 4;

3) the downlink component carrier identification number of place downlink component carrier; The downlink component carrier identification number is 0 in the system information on the downlink component carrier 1, and the downlink component carrier identification number is 1 in the system information on the downlink component carrier 2, and the downlink component carrier identification number is 2 in the system information on the downlink component carrier 3;

4) correspond to the quantity 3 of the downlink component carrier of upstream components carrier wave 1;

The user terminal down-going synchronous is in downlink component carrier 1, by reading described system information, obtain its downlink component carrier identification number of synchronous downlink component carrier, and the quantity 3 that corresponds to the downlink component carrier of upstream components carrier wave 1.

User terminal is selected random access leader sequence according to inserting configuration parameter at random.The random access leader sequence that user terminal can be chosen must meet the following conditions:

The sequence number mod 3=downlink component carrier identification number mod 3=0 of random access leader sequence; Wherein, mod is for asking modulo symbol (sequence number of random access leader sequence is since 0 ordering).

User terminal sends selected random access guiding to the base station on the Physical Random Access Channel of upstream components carrier wave 1.

The base station judges that according to the sequence number of random access leader sequence user terminal synchronously on downlink component carrier 1, sends accidental access response on this downlink component carrier after receiving the random access guiding that user terminal sends.

After user terminal is received accidental access response, send the Msg 3 of dispatching uplink transmission first.

After Msg 3 is received in the base station, on downlink component carrier 1, send competition and solve message Msg 4.

Fig. 3 is the flow chart of the report method of DL synchronization component carrier wave of the present invention, and as shown in Figure 3, the report method of DL synchronization component carrier wave of the present invention may further comprise the steps:

Step 301: user terminal be synchronized to downlink component carrier and determine the identification information of synchronous downlink component carrier, according to the corresponding relation of each downlink component carrier and random access leader sequence in the downlink component carrier group of prior setting, select described user terminal in the random access leader sequence of synchronous downlink component carrier correspondence one; Wherein, described downlink component carrier group is all downlink component carriers corresponding to a upstream components carrier wave.

Wherein, user terminal determine the identification information of synchronous downlink component carrier, be to determine according to mode illustrated in the identification method of downlink component carrier wave in the previous embodiment one to six, repeat no more it here and realize details.The corresponding relation of each downlink component carrier and random access leader sequence in the prior downlink component carrier group of setting, be specially: the downlink component carrier number in the sequence number of described random access leader sequence and the described downlink component carrier group carries out delivery and calculates, and the random access leader sequence of each mould value correspondence is corresponding with a downlink component carrier in the described downlink component carrier group.About corresponding relation, can repeat no more here referring to the associated description in the previous embodiment six.

Step 302: will be sent to network side for the selected random access leader sequence of described user terminal.

According to the corresponding relation of downlink component carrier in the step 301 and random access leader sequence, the random access leader sequence for the described user terminal of user terminal selecting can be used is sent to the base station by Msg 1.

Fig. 4 is the composition structural representation of the reporting device of DL synchronization component carrier wave of the present invention, as shown in Figure 4, the reporting device of DL synchronization component carrier wave of the present invention comprises lock unit 40, determining unit 41, memory cell 42, selected cell 43 and transmitting element 44, wherein, lock unit 40 is used to be synchronized to downlink component carrier; Determining unit 41 be used to determine lock unit 40 the identification information of synchronous downlink component carrier; Memory cell 42 is used for storing each downlink component carrier of downlink component carrier group of prior setting and the corresponding relation of random access leader sequence; Wherein, described downlink component carrier group is all downlink component carriers corresponding to a upstream components carrier wave; The corresponding relation of each downlink component carrier and random access leader sequence in the prior downlink component carrier group of setting, be specially: the downlink component carrier number in the sequence number of described random access leader sequence and the described downlink component carrier group carries out delivery and calculates, and the random access leader sequence of each mould value correspondence is corresponding with a downlink component carrier in the described downlink component carrier group.Selected cell 43 is used for each downlink component carrier of downlink component carrier group stored according to memory cell 42 and the corresponding relation of random access leader sequence, select in the random access leader sequence of synchronous downlink component carrier correspondence one; Transmitting element 44 is used for selected cell 43 selected random access leader sequences are sent to network side.

Processing unit shown in Figure 4 is applicable to subscriber terminal side.

Those skilled in the art are to be understood that, the realization function of the each processing unit of the reporting device of the DL synchronization component carrier wave that the present invention is shown in Figure 4 can be understood with reference to the associated description in the previous embodiment six, the function of each unit can realize by the program that runs on the processor, also can realize by corresponding logical circuit.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims

1, a kind of identification method of downlink component carrier is characterized in that, comprising:

Described system information is sent to user terminal.

2, method according to claim 1, it is characterized in that, in the system information of the downlink component carrier of carrying accidental access response, the frequency point information of the downlink component carrier of described carrying accidental access response or frequency and bandwidth information thereof are default value, and the identification information that perhaps carries the downlink component carrier of accidental access response is a default value.

3, method according to claim 1 is characterized in that, the number of the downlink component carrier of carrying accidental access response is one in described one group of downlink component carrier.

4, method according to claim 3 is characterized in that, described method also comprises:

5, method according to claim 3 is characterized in that, also comprises the information of determining self identity in described one group of downlink component carrier in the system information of each downlink component carrier.

6, method according to claim 5 is characterized in that, describedly determines that the information of self identity is the identification number of downlink component carrier.

7, method according to claim 5 is characterized in that, describedly determines that the information of self identity is:

8, method according to claim 7 is characterized in that, the identification information of described downlink component carrier is the identification number of downlink component carrier.

9, according to each described method in the claim 6 to 8, it is characterized in that described method also comprises:

10, method according to claim 9, it is characterized in that described one group of downlink component carrier corresponding to a upstream components carrier wave is: the more than one downlink component carrier of having notified frequency point information or the frequency and the bandwidth information of same upstream components carrier wave.

11, method according to claim 10, it is characterized in that, the identification number and the frequency point information thereof that also comprise each downlink component carrier of institute's polymerization in the cellular downlink in the system information of each downlink component carrier in described one group of downlink component carrier, the identification number and the frequency point information thereof that perhaps comprise each downlink component carrier of institute's polymerization in the cellular downlink, and the corresponding relation of uplink and downlink component carrier.

12, method according to claim 11 is characterized in that, described system information is carried among the system information block SIB that comprises the cell radio resource configuration information, and described SIB sends on Physical Downlink Shared Channel.

13, a kind of identification method of downlink component carrier is characterized in that, comprising:

Described system information is sent to user terminal.

14, method according to claim 13 is characterized in that, describedly determines that the information of self identity is the identification number of downlink component carrier.

15, method according to claim 13 is characterized in that, describedly determines that the information of self identity is:

16, according to claim 14 or 15 described methods, it is characterized in that described method also comprises:

17, method according to claim 16, it is characterized in that described one group of downlink component carrier corresponding to a upstream components carrier wave is: the more than one downlink component carrier of having notified frequency point information or the frequency and the bandwidth information of same upstream components carrier wave.

18, method according to claim 16 is characterized in that, described system information is carried among the system information block SIB that comprises the cell radio resource configuration information, and described SIB sends on Physical Downlink Shared Channel.

19, method according to claim 16 is characterized in that, all carries the accidental access response corresponding to same random access guiding in each downlink component carrier in described one group of downlink component carrier.

20, a kind of identification method of downlink component carrier is characterized in that, comprising:

Described system information is sent to user terminal.

21, method according to claim 20 is characterized in that, describedly determines that the information of self identity is the identification number of downlink component carrier.

22, method according to claim 20 is characterized in that, describedly determines that the information of self identity is:

23, according to claim 21 or 22 described methods, it is characterized in that described method also comprises:

24, method according to claim 23 is characterized in that, each downlink component carrier in described one group of downlink component carrier and the corresponding relation of random access leader sequence are specially:

25, method according to claim 23, it is characterized in that described one group of downlink component carrier corresponding to a upstream components carrier wave is: the more than one downlink component carrier of having notified frequency point information or the frequency and the bandwidth information of same upstream components carrier wave.

26, method according to claim 23 is characterized in that, described system information is carried among the system information block SIB that comprises the cell radio resource configuration information, and described SIB sends on Physical Downlink Shared Channel.

27, a kind of report method of DL synchronization component carrier wave is characterized in that, comprising:

28, method according to claim 27 is characterized in that, the corresponding relation of each downlink component carrier and random access leader sequence in the downlink component carrier group of described prior setting is specially:

29, a kind of reporting device of DL synchronization component carrier wave is characterized in that, comprising:

Lock unit is used to be synchronized to downlink component carrier;

30, device according to claim 29 is characterized in that, the corresponding relation of each downlink component carrier and random access leader sequence in the downlink component carrier group of described prior setting is specially: