CN102469570B

CN102469570B - Information notification and timing advance (TA) obtaining method, system and equipment thereof

Info

Publication number: CN102469570B
Application number: CN201010540113.2A
Authority: CN
Inventors: 梁靖; 赵亚利
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2010-11-11
Filing date: 2010-11-11
Publication date: 2014-11-26
Anticipated expiration: 2030-11-11
Also published as: CN102469570A

Abstract

The embodiment of the invention, which relates to the wireless communication technology field, discloses an information notification and timing advance (TA) obtaining method, a system and equipment thereof. The method, the system and the equipment are used to solve a problem that how a terminal acquires the TA used in uplink transmission on a new added cell when a polymerization cell is added for the terminal. In the invention, the method is characterized in that: a base station sends information which carries a message that whether uplink TAs of a plurality of cells are the same to the terminal; the terminal determines whether the uplink TA of the new added cell configured by the base station for the terminal is the same with the uplink TA of a current service cell TA of the terminal; if the uplink TAs are the same, the current service cell TA is acquired and the TA is taken as the TA used in the uplink transmission performed in the new added cell; otherwise, through initiating a random access process, the TA used in the uplink transmission performed in the new added cell is obtained. Therefore, by using the method, the system and the equipment of the invention, the terminal can obtain the TA used in the uplink transmission performed on the new added cell.

Description

Information notice and Timing Advance acquisition methods, system and equipment

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of information notice and Timing Advance acquisition methods, system and equipment.

Background technology

Long Term Evolution (LTE) and before wireless communication system in, in Yi Ge community, only have a carrier wave, in LTE system, maximum bandwidth is 20MHz, as shown in Figure 1.

In long-term evolution upgrading (LTE Advanced, LTE-A) system, the peak rate of system is compared and is had huge raising than LTE system, requires to reach descending 1Gbps, up 500Mbps.If only using carrier wave that a maximum bandwidth is 20MHz cannot reach peak rate requires.Therefore, LTE-A system needs the operable bandwidth of terminal extension, introduced thus carrier aggregation (Carrier Aggregation, CA) technology, be about to a plurality of continuous or discrete carrier aggregation under same base station (eNB) together, be terminal (UE) service, so that required speed to be provided simultaneously.These carrier waves that condense together are called again member carrier (component carrier, CC).Each community can be a member carrier, and different e NBXia community (or member carrier) can not polymerization.In order to guarantee that the UE in LTE system can work under the carrier wave of each polymerization, each member carrier maximum is no more than 20MHz.The CA technology of LTE-A system as shown in Figure 2.

Under base station in LTE-A system shown in Fig. 2, have 4 can polymerization carrier wave, transfer of data can be carried out with UE in base station simultaneously on 4 carrier waves, to improve throughput of system.In LTE-A system, each community only has a carrier wave, so carrier aggregation also can be regarded as community polymerization.In all aggregation cell, UE has a main plot and one or more auxiliary community.Main plot is owing to having bound some important physical resources, can initiate random access, can provide security information etc., so status is important.Er Fu community is in carrier aggregation process, and can be taken as is some up-downgoing resources, utilizes.

In LTE-A system, there is at present the scene of 5 kinds of carrier aggregation, as shown in Fig. 3 A～Fig. 3 B:

Scene 1: referring to Fig. 3 A, frequency f1 and f2 have identical covering.

In the same position that covers, UE can carry out carrier aggregation transmission in polymerization f1 Hef2Shang community.

Scene 2: referring to Fig. 3 B, frequency f1 has similar covering with f2.

Scene 3: referring to Fig. 3 C, frequency f1 and f2 have the covering overlapping each other.

Scene 4: referring to Fig. 3 D, frequency f1 provides larger cell-level to cover, and frequency f2 is remote radio (Remote Radio Head, RRH) equipment, provides focus to cover.

In the same position that covers, UE can carry out carrier aggregation transmission (overlay area that comprises RRH) in polymerization f1 Hef2Shang community.

Scene 5: referring to Fig. 3 E, frequency f1 provides larger cell-level to cover, and frequency f2 community covers smaller, but is provided with repeater (repeater) at the part cell edge of f2, can expand f2Shang community and cover.

In the same position that covers, UE can carry out carrier aggregation transmission (overlay area that comprises repeater) in polymerization f1 Hef2Shang community.

In five kinds of scenes introducing in the above, polymerizable community in scene 1, scene 2 and scene 3, up timing relationship is all identical, namely adopt same Timing Advance (TA) to carry out uplink, therefore, when UE carries out CA transmission, only need to safeguard the TA of main plot, just can meet the synchronous object in upper provisional capital of all aggregation cell.And in scene 4 and scene 5, introducing due to RRH and repeater, can cause UE when carrying out CA transmission, different aggregation cell may adopt different TA, for example, through RRH or the community of repeater and other community, carry out the TA difference that uplink adopts, now, UE need to safeguard a plurality of TA simultaneously, can meet the requirement of uplink synchronous, with the correct transfer of data of carrying out.

Terminal can adopt non-competing Random Access or competition Random Access to access at random, and the process of non-competing random access, as shown in Fig. 3 F, is mainly divided into following three steps:

Message 0 (Msg0): special random access preamble code (the Random Access Preamble that is used in non-competing random access is divided in base station to UE, ra-PreambleIndex) and at random Physical Random Access Channel (PRACH) the mask numbering (ra-PRACH-MaskIndex) that access is used, for downlink data, arrive the non-competing random access causing and use PDCCH to carry these information, the non-competing random access causing for switching is carried these information by switching command (Handover Command);

Message 1 (Msg1): UE, according to ra-PreambleIndex and the ra-PRACH-MaskIndex of Msg0 indication, sends the dedicated preamble of appointment in the PRACH of appointment resource to base station.Uplink timing advance (TA) is calculated according to Msg1 after receiving Msg1 in base station;

Message 2 (Msg2): base station sends accidental access response to UE, comprises Timing Advance information in accidental access response, to notify the UE Timing Advance that uplink is used before obtaining next TA order.

The process of the random access of competition, as shown in Fig. 3 G, is mainly divided into following four steps:

Message 1 (Msg1): UE selects random access preamble and PRACH resource and utilizes this PRACH resource to base station, to send selected random access preamble;

Message 2 (Msg2): base station receives preamble, calculates TA, and sends accidental access response to UE, at least comprises this Timing Advance information and for the uplink scheduling signaling (UL grant) of message 3 (Msg3) in accidental access response;

In the resource of Msg3:UE UL grant appointment in Msg2, send uplink, the content of different random access reason uplink is different, such as for initial access, Msg3 transmission be that RRC connects the request of foundation;

Message 4 (Msg4): base station sends competition to terminal and solves message, UE can judge that according to Msg4 whether random access is successful.

In LTE system, regulation is by base station maintenance uplink synchronous.When UE accesses at random, base station obtains initial Timing Advance according to preamble, and follow-up uplink synchronous maintenance process is as shown in Fig. 3 H:

Base station and UE safeguard respectively a upstream synchronous timing device (TA timer, TAT), base station sends TA order (TA command to terminal, TA cmd) and start TAT, if terminal can not correctly receive TA command, to base station, send negative response (NACK) information, base station receives NACK, suitable descending sub frame resends TA command and restarts TAT again, terminal correctly receives TAcommand and starts the TAT of terminal and to base station, send to confirm to reply (ACK) information, and base station receives the TAT of restarting base station after the ACK information that terminal sends out.Base station does not have overtime for the TAT of certain UE, base station thinks that this UE is in synchronous regime; As long as it is overtime that the TAT that UE oneself safeguards does not have, UE also thinks it oneself is synchronous.

In realizing process of the present invention, inventor finds to exist in prior art following technical problem:

In prior art, there is identical up timing relationship all communities of the UE polymerization in CA system, and UE only need to safeguard the TA of main plot, just can meet the requirement of the uplink synchronous of all aggregation cell.But in the later release of LTE, existence due to RRH in network and repeater, cause the different aggregation cell of UE may there is different up timing relationships, in this case, UE only safeguards that the uplink timing advance of main plot is the requirement that cannot meet the uplink synchronous of all aggregation cell.If up asynchronous, can cause data transmission fault, even disconnecting, affects user and experiences.

Summary of the invention

The embodiment of the present invention provides a kind of information notice method and a kind of information notification apparatus, cannot know the whether identical problem of up TA of community for solving terminal.

An information notice method, the method comprises:

Base station determines that whether the uplink timing advance TA of a plurality of communities is identical;

Base station sends the whether identical information of up TA of a plurality of communities of determining to terminal.

An information notification apparatus, is characterized in that, this device comprises:

Whether determining unit is identical for determining the uplink timing advance TA of a plurality of communities;

Transmitting element, for sending the whether identical information of up TA of a plurality of communities of determining to terminal.

In this programme, base station, after whether the uplink timing advance TA that determines a plurality of communities is identical, sends the whether identical information of up TA of a plurality of communities of determining to terminal.Visible, adopt this programme, terminal can know that whether the up TA of a plurality of communities is identical.

The embodiment of the present invention provides a kind of Timing Advance acquisition methods, a kind of Timing Advance acquisition device and a kind of multi-carrier polymerizing communication system, how to obtain the problem of the TA using while carrying out uplink on newly-increased community for solving when for the newly-increased aggregation cell of terminal terminal.

A Timing Advance acquisition methods, the method comprises:

Terminal receives and preserves the whether identical information of up TA of a plurality of communities of base station transmission;

Terminal, according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.

A Timing Advance acquisition device, this device comprises:

Receiving element, for receiving and preserve the whether identical information of up TA of a plurality of communities of base station transmission;

Acquiring unit, for according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.

A multi-carrier polymerizing communication system, this system comprises:

Base station, whether identical for determining the uplink timing advance TA of a plurality of communities; To terminal, send the whether identical information of up TA of a plurality of communities of determining.

Terminal, for receiving and preserve the whether identical information of up TA of a plurality of communities of base station transmission; According to the information of preserving, determine that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.

In this programme, terminal receives and preserves the whether identical information of up TA of a plurality of communities of base station transmission, and according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.Visible employing the present invention, terminal can be determined the TA using while carrying out uplink on newly-increased community, and then carries out correct uplink according to this TA, avoids due to the up asynchronous data transmission fault causing.

Accompanying drawing explanation

Fig. 1 is LTE of the prior art system cell distribution of carriers schematic diagram;

Fig. 2 is multi-carrier polymerizing schematic diagram of the prior art;

Fig. 3 A～Fig. 3 E is carrier aggregation scene schematic diagram of the prior art;

Fig. 3 F is non-competing random access procedure schematic diagram of the prior art;

Fig. 3 G is competition random access procedure schematic diagram of the prior art;

Fig. 3 H is that TA of the prior art safeguards schematic diagram;

The method flow schematic diagram that Fig. 4 provides for the embodiment of the present invention;

The other method schematic flow sheet that Fig. 5 provides for the embodiment of the present invention;

The system configuration schematic diagram that Fig. 6 provides for the embodiment of the present invention;

The apparatus structure schematic diagram that Fig. 7 provides for the embodiment of the present invention;

Another apparatus structure schematic diagram that Fig. 8 provides for the embodiment of the present invention.

Embodiment

In order to solve when for the newly-increased aggregation cell of terminal terminal, how to obtain the problem of the TA using while carrying out uplink on newly-increased community, to meet the uplink synchronous requirement of the aggregation cell of terminal, the embodiment of the present invention provides a kind of information notice and TA acquisition methods, in this method, base station sends to terminal by the whether identical information of the TA of community, and terminal is determined the TA using when uplink is carried out in community increasing newly according to this information.

Referring to Fig. 4, the information notice method that the embodiment of the present invention provides, comprises the following steps:

Step 40: base station determines that whether the up TA of a plurality of communities is identical;

Step 41: base station sends the whether identical information of up TA of a plurality of communities of determining to terminal.

As a kind of execution mode, in step 40, described base station determines that the TA of a plurality of communities is specially:

Base station is being determined and need to, behind the newly-increased aggregation cell for terminal, determined that whether the up TA of the up TA of newly-increased community and the current service cell of terminal is identical;

Accordingly, in step 41, the whether identical information of up TA that base station sends a plurality of communities to terminal is specially: base station, by dedicated signaling, sends the whether identical information of up TA of the up TA of described newly-increased community and the current service cell of terminal to terminal.

For example, base station when the up TA that determines the up TA of described newly-increased community and all current service cell of terminal is not identical, by dedicated signaling to the up TA of the terminal transmission up TA of described newly-increased community and all current service cell of terminal not identical information;

Base station, when the up TA that determines the up TA of described newly-increased community and one or more current service cell of terminal is identical, sends the up TA information identical with the up TA of these one or more current service cell of described newly-increased community to terminal by dedicated signaling.In this information, can comprise the identification information of these one or more current service cell, this identification information can be cell index (cell index), DLfreq+PCI, cell ID (Cell ID), ECGI etc.

Here, the current service cell of terminal comprises: the main plot of terminal and/or in state of activation Fu community.

As another kind of execution mode, in step 40, base station is determined whether the uplink timing advance TA of a plurality of communities is identical and is specially: whether base station is determined identical with the up TA of current area with the up TA of other communities of current area polymerization; This current area refers to that base station needs the community of transmitting system message;

Accordingly, in step 41, the whether identical information of up TA that base station sends a plurality of communities to terminal is specially: base station, by the system message of current area, sends the up TA information whether identical with the up TA of current area of described other communities to terminal.The identification information that can comprise other communities identical with the up TA of current area and/or other communities not identical with the up TA of current area in this information, this identification information can be cell index (cell index), DL freq+PCI, cell ID (Cell ID), ECGI etc.

As the third execution mode, in step 40, base station is determined whether the uplink timing advance TA of a plurality of communities is identical and is specially: base station determines that whether up TA that base station is supported or all communities that terminal is supported are identical;

Accordingly, in step 41, the whether identical information of up TA that base station sends a plurality of communities to terminal is specially: base station, by system message or dedicated signaling, sends the whether identical information of up TA that described base station is supported or all communities that terminal is supported to terminal.For example, community that support or terminal support, base station comprises community 1, community 2, community 3 and community 4, identical up TA is used in community 1, community 2 and community 3, another up TA different from this up TA is used in community 4, now, the up TA of the up TAYu community 3 of community 1, community 2 is identical, the up TAYu community 1 of community 4, base station, community 2 information different with the up TA of community 3 send to terminal.Specifically can use cell identity information to represent this information, this cell identity information can be cell index (cell index), DL freq+PCI, cell ID (Cell ID), ECGI etc.

In above-mentioned three kinds of execution modes, base station is determine need to be when the up TA that increases aggregation cell and the newly-increased up TA of community and all current service cell of terminal for terminal newly be not identical, base station can indicating terminal initiating random access procedure, to obtain the up TA of described newly-increased community.Here, base station can be in the whether identical information of the up TA that sends community or afterwards, indicating terminal initiating random access procedure.

Dedicated signaling in this method can be: Radio Resource is controlled (RRC) signaling, or media access control (MAC) control unit (CE).

In this method, base station can determine that whether the up TA of community is identical according to the network planning, for example, if the signal demand of community 1 just can reach base station through RRH or repeater, the signal of community 2 does not need through RRH or repeater and directly reaches base station, can determine that the up TA of community 1 and community 2 is different; If the signal of community 1 and community 2 all needs just can reach base station through RRH or repeater, can determine that the up TA of community 1 and community 2 is identical.

Referring to Fig. 5, the embodiment of the present invention also provides a kind of Timing Advance acquisition methods, specifically comprises the following steps:

Step 50: terminal receives and preserve the whether identical information of up TA of a plurality of communities of base station transmission;

Step 51: terminal, according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.

As a kind of execution mode, in step 50, the whether identical information of up TA that terminal received and preserved a plurality of communities of base station transmission is specially: the dedicated signaling that terminal sends by base station, the up TA of the newly-increased community information whether identical with the up TA of the current service cell of terminal that reception base station is this terminal configuration.

As another kind of execution mode, in step 50, the whether identical information of up TA that terminal received and preserved a plurality of communities of base station transmission is specially: the system message that terminal sends in current area by base station, receives the information whether identical with the up TA of current area with the up TA of other communities of current area polymerization.

As the third execution mode, in step 50, the whether identical information of up TA that terminal received and preserved a plurality of communities of base station transmission is specially: the system message that terminal sends by base station or dedicated signaling, receive the whether identical information of up TA that base station is supported or all communities that terminal is supported.

In step 51, terminal can, when the Indication message receiving from the initiating random access procedure of base station, according to this Indication message initiating random access procedure, carry out to obtain in newly-increased community the TA that uplink is used; Or all right spontaneous initiating random access procedure of terminal, carries out to obtain in newly-increased community the TA that uplink is used.Here, in Indication message, can carry the random access lead code (preamble) that initiating random access procedure uses and/or access at random related physical resource.

In step 51, terminal is obtained after TA that uplink used is carried out in newly-increased community by initiating random access procedure, terminal can be carried out uplink in described newly-increased community according to getting TA, and safeguard the uplink synchronous relation between described newly-increased community and base station, also, terminal pins need to be safeguarded respectively a uplink synchronous relation to each TA.

Dedicated signaling in this method can be: RRC signaling, or MAC CE.

Below in conjunction with specific embodiment, the present invention will be described:

The main thought of the method that the present invention proposes is:

UE side:

UE, according to dedicated signaling or system information, obtains other communities identical or different with the TA of current service cell information of (comprising new Serving cell or adjacent cell);

UE can, according to cell index (cell index), cell ID (comprising DL freq+PCI, Cell ID, ECGI) etc., determine current service cell and other communities that TA is identical;

UE, according to the TA information of obtaining, carries out the uplink synchronous of all Serving cells and safeguards.

Network side:

Base station is by dedicated signaling or system information, and the TA of notice current which community of UE is identical;

If base station is notified by dedicated signaling, base station can be when adding an aggregation cell for UE, the information that Jiang Gai community is identical with the TA of which current service cell, and notice is to UE;

Base station can be by cell index (cell index), cell ID (comprising DL freq+PCI, Cell ID, ECGI) etc., the sign identical community of TA.

Several embodiment are provided below:

Embodiment mono-:

In the present embodiment, newly-increased community is all different from the TA of current all Serving cells, and the up TA of use RRC message informing is different information; Specific as follows:

Polymerization of UE community 1 and community 2 carry out transfer of data, the TA of Zhe Liangge community is identical, its small area 1 is main plot.Due to increase or the movement of UE traffic carrying capacity, base station determines for UE increases an aggregation cell, to be community 3 again.Due to the difference (may be because RRH or repeater have been passed through in community 3) of 3 TAYu communities 1, community and community 2, therefore, during WeiUE allocating cell 3, base station, by RRC specific messages, notify UE: community 3 is different from the TA of main plot; Also can simultaneously or trigger afterwards on UE community 3 and access at random, so that UE obtains the TA of community 3, complete the uplink synchronous of community 3.

Base station can adopt a sign bit or selection (CHIOCE) branch statement to notify UE community 3 different from the TA of main plot, and while adopting a sign bit notice, sign bit ' 0 ' can represent identical, and ' 1 ' expression of sign bit is different; While adopting a CHIOCE branch statement notice, the branch one of CHIOCE represents that the TA of the Serving cell that newly-increased community 3 is current with certain is identical, and the branch two of CHIOCE represents that newly-increased community 3 is all different from the TA of current all Serving cells.

In addition, in branch once, can use cell index (cell index), cell ID (DL freq+PCI, Cell ID, ECGI) etc., identify current Serving cell, wherein cell index is that the base station cell index of having distributed for the current service cell of UE is (if community 1 is ' 000 ', community 2 is ' 001 '), DL freq+PCI is downstream frequency and the physical-layer cell identifier of current service cell, Cell ID is the high layer cell identifiers of current service cell, the global unique identification that ECGI is current service cell; In branch 2 times, can also further indicate UE to access at random, can distribute dedicated preamble and/or access at random related physical resource by Indication message.

In the present embodiment, can use branch two, and for UE distributes dedicated preamble and random access related physical resource, trigger UE community 3 and access at random, to obtain the up TA of community 3.After UE obtains the up TA of community 3, UE safeguards 2 TA (TA is used in community 1 and community 2, and another one TA is used in community 3) simultaneously, carries out transmitting uplink data.Supposing follow-uply has newly-increased community all different from the TA of community 1, community 2 and community 3, also can adopt above-mentioned mode to notify.

Except adopting RRC message, whether base station also can notify the TA of the newly-increased community of UE identical with current service cell by MAC CE (Control Element).The form of MAC CE can be a sign bit, then adds cell index.If sign bit is ' 1 ', think that the TA of newly-increased community is not identical with current service cell, cell index below does not need; If sign bit be ' 0 ', below need a cell index, notify the identical of TA that UE increases community newly and current which Serving cell.In order to identify this MAC CE at MAC layer, can introduce new Logic Channel Identifier (LCID) and indicate this MAC CE.

Embodiment bis-:

In the present embodiment, newly-increased community is identical with the TA of current some Serving cell, uses the newly-increased community of RRC message informing identical with the TA of current service cell; Specific as follows:

Polymerization of UE community 1, community 2 and community 3, its small area 1 is main plot, there is identical TA (being called TA1) community 1 and 2, there is another one TA (being called TA2) community 3.Now, due to increase or the movement of UE traffic carrying capacity, base station determines again for UE increases an aggregation cell (community 4).Because 4 TAYu communities 1, community are identical with community 2, different from community 3, therefore, during WeiUE allocating cell 4, base station, by RRC specific messages, notify UE: community 4 is identical with the TA of main plot, and like this, UE need to not access at random on community 4 again, only need to use the TA1 of main plot, just can directly carry out uplink synchronous.Base station can adopt the CHIOCE branch one in embodiment mono-, for UE increases in the RRC signaling of community 4, notifies the TA of UE community 4 identical with main plot simultaneously, and main plot can identify with cell index (000).UE, after receiving this RRC signaling, increases community 4, and thinks that the TA of community 4 is TA1.After community 4 is activated, can on community 4, carry out transmitting uplink data.

Except adopting RRC message, whether base station also can notify the TA of the newly-increased community of UE identical with current service cell by MAC CE.Concrete form can be with identical described in embodiment mono-.

Embodiment tri-:

In the present embodiment, use system information notice whether identical with the TA of current area, specific as follows with the TA of other communities of current area polymerization:

Base station is in the system information of administered community, and whether broadcast can be identical with current area with the TA of other communities of current area polymerization.For example, in the system information of community 1, comprise that community 2 and community 4 are identical with the TA of community 1, community 3 is different from the TA of community 1.Suppose first 1 work in community of UE, because traffic carrying capacity increases, base station is that UE increases aggregation cell 2 (community 1 is main plot).Because UE is by the system information of community 1, known that community 2 is identical with the TA of community 1, therefore, carry out carrier aggregation while transmitting having increased community 2, UE is directly used the TA of community 1, carries out the transmitting uplink data of community 2.If next the traffic carrying capacity of UE continues to increase, base station is that UE increases aggregation cell 3 (community 1 is still main plot).Because UE is by the system information of community 1, known that community 3 is different from the TA of community 1, therefore, in increase community 3, carry out after carrier aggregation transmission, even if base station is not triggered UE by dedicated signaling and initiated random access, UE also can, after obtaining the random access resource of community 3, initiate random access voluntarily, to obtain the TA of community 3, reach the object of uplink synchronous.After 3 uplink synchronous of community, UE safeguards two TA, carries out uplink on community 1, community 2 and community 3 simultaneously.

Embodiment tetra-:

In the present embodiment, whether the TA of the community that use RRC signaling terminal is supported is identical, specific as follows:

Except as described in embodiment mono-and embodiment bis-, when increasing aggregation cell for UE, outside whether the newly-increased TA of community of notice UE is identical with the TA of current service cell, base station also can be after UE enters connection status any time, the information whether TA of all communities of terminal support identical is notified to UE.For example, the scene as described in embodiment bis-, base station can utilize the mode of list, and after UE enters connection status, notice UE community 1, community 2 is identical with the TA of community 4, and they are different from the TA of community 3, as shown in the table:

TA numbering 1	Community 1, community 2, community 4
		TA numbering 2	Community 3

Also can after each community, increase a sign, the TA that indicates which community is identical.

Community 1	TA numbering 1
		Community 2	TA numbering 1
Community 3	TA numbering 2
		Community 4	TA numbering 1

Referring to Fig. 6, the embodiment of the present invention also provides a kind of multi-carrier polymerizing communication system, and this system comprises:

Base station 60, whether identical for determining the uplink timing advance TA of a plurality of communities; To terminal, send the whether identical information of up TA of a plurality of communities of determining.

Terminal 61, for receiving and preserve the whether identical information of up TA of a plurality of communities of base station transmission; According to the information of preserving, determine that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.

Referring to Fig. 7, the embodiment of the present invention also provides a kind of information notification apparatus, and this device comprises:

Whether determining unit 70 is identical for determining the uplink timing advance TA of a plurality of communities;

Transmitting element 71, for sending the whether identical information of up TA of a plurality of communities of determining to terminal.

Described determining unit 70 for:

Determining and need to, behind the newly-increased aggregation cell for terminal, determine that whether the up TA of the up TA of newly-increased community and the current service cell of terminal is identical;

Described transmitting element 71 for:

By dedicated signaling, to terminal, send the whether identical information of up TA of the up TA of described newly-increased community and the current service cell of terminal.

The current service cell of terminal comprises: the main plot of terminal and/or in state of activation Fu community.

Described determining unit 70 for:

Determine whether identical with the up TA of current area with the up TA of other communities of current area polymerization;

Described transmitting element 71 for:

By the system message of current area, to terminal, send the up TA information whether identical with the up TA of current area of described other communities.

Described determining unit 70 for:

Determine that whether up TA that base station is supported or all communities that terminal is supported are identical;

Described transmitting element 71 for:

By system message or dedicated signaling, to terminal, send the whether identical information of up TA that described base station is supported or all communities that terminal is supported.

This device also comprises:

Trigger element 72, for determine need to be when the up TA that increases aggregation cell and the newly-increased up TA of community and all current service cell of terminal for terminal newly be not identical, indicating terminal initiating random access procedure, to obtain the up TA of described newly-increased community.

Described dedicated signaling is:

Radio resource control RRC signaling, or media access control MAC control unit CE.

Referring to Fig. 8, the embodiment of the present invention also provides a kind of Timing Advance acquisition device, and this device comprises:

Receiving element 80, for receiving and preserve the whether identical information of up TA of a plurality of communities of base station transmission;

Acquiring unit 81, for according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.

Described receiving element 80 for:

The dedicated signaling sending by base station, the information whether up TA of newly-increased community that reception base station is this terminal configuration is identical with the up TA of the current service cell of terminal.

Described receiving element 80 for:

The system message sending in current area by base station, receives the information whether identical with the up TA of current area with the up TA of other communities of current area polymerization.

Described receiving element 80 for:

The system message sending by base station or dedicated signaling, receive the whether identical information of up TA that base station is supported or all communities that terminal is supported.

Described acquiring unit 81 for:

When the Indication message receiving from the initiating random access procedure of base station, according to this Indication message initiating random access procedure, to obtain the up TA of described newly-increased community.

This device also comprises:

Maintenance unit 82, for carrying out uplink according to getting TA in described newly-increased community, and safeguards the uplink synchronous relation between described newly-increased community and base station.

Described dedicated signaling is:

Information notification apparatus in the present invention is specifically as follows base station, and Timing Advance acquisition device is specifically as follows terminal.

To sum up, beneficial effect of the present invention comprises:

In the scheme that the embodiment of the present invention provides, after base station determines that whether the uplink timing advance TA of a plurality of communities is identical, to terminal, send the whether identical information of up TA of a plurality of communities of determining.Terminal receives and preserves the whether identical information of up TA of a plurality of communities of base station transmission, and according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used.Visible employing the present invention, terminal can be determined the TA using while carrying out uplink on newly-increased community, and then carries out correct uplink according to this TA, avoids due to the up asynchronous data transmission fault causing.

Scheme provided by the invention has solved under many TA scene, and how UE is operated in the problem on a plurality of carrier waves simultaneously, and many TA carrier aggregation system can be worked.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims

1. an information notice method, is characterized in that, the method comprises:

Base station determines that according to the network planning whether the uplink timing advance TA of a plurality of communities is identical;

Base station sends the whether identical information of up TA of a plurality of communities of determining to terminal;

Wherein, base station determines that according to the network planning whether the up TA of Liang Ge community is identical, the signal demand of Yi Ge community specifically comprises: if just can reach base station through radio frequency remote equipment RRH or repeater in described Liang Ge community, the signal of another community does not need directly to reach base station through RRH or repeater, and the up TA of described Liang Ge community is different; If the signal of described Liang Ge community all needs just can reach base station through RRH or repeater, the up TA of described Liang Ge community is identical;

Base station is used cell index cell index or cell identity information to represent the whether identical information of described up TA.

2. the method for claim 1, is characterized in that, described base station is determined whether the uplink timing advance TA of a plurality of communities is identical and comprised:

The whether identical information of up TA that described base station sends a plurality of communities to terminal comprises:

Base station, by dedicated signaling, sends the whether identical information of up TA of the up TA of described newly-increased community and the current service cell of terminal to terminal.

3. method as claimed in claim 2, is characterized in that, the current service cell of terminal comprises: the main plot of terminal and/or in state of activation Fu community.

4. the method for claim 1, is characterized in that, described base station is determined whether the uplink timing advance TA of a plurality of communities is identical and comprised:

Whether base station is determined identical with the up TA of current area with the up TA of other communities of current area polymerization;

Base station, by the system message of current area, sends the up TA information whether identical with the up TA of current area of described other communities to terminal.

5. the method for claim 1, is characterized in that, described base station is determined whether the uplink timing advance TA of a plurality of communities is identical and comprised:

Base station determines that whether up TA that base station is supported or all communities that terminal is supported are identical;

Base station, by system message or dedicated signaling, sends the whether identical information of up TA that described base station is supported or all communities that terminal is supported to terminal.

6. as the method as described in arbitrary in claim 2-5, it is characterized in that, base station is determine need to be when the up TA that increases aggregation cell and the newly-increased up TA of community and all current service cell of terminal for terminal newly be not identical, and the method further comprises:

Base station indicating terminal initiating random access procedure, to obtain the up TA of described newly-increased community.

7. the method as described in claim 2 or 5, is characterized in that, described dedicated signaling is:

8. the method for claim 1, is characterized in that, described cell identity information is:

Downstream frequency and physical-layer cell identifier DL freq+PCI or high layer cell identifiers Cell ID or Cell Global Identity ECGI.

9. a Timing Advance acquisition methods, is characterized in that, the method comprises:

Terminal receives and preserves that base station is determined according to the network planning and the whether identical information of up TA of a plurality of communities of sending;

Terminal, according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used;

Terminal, according to cell index cell index or cell identity information in the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal.

10. method as claimed in claim 9, is characterized in that, the whether identical information of up TA that described terminal received and preserved a plurality of communities of base station transmission comprises:

The dedicated signaling that terminal sends by base station, the information whether up TA of newly-increased community that reception base station is this terminal configuration is identical with the up TA of the current service cell of terminal.

11. methods as claimed in claim 10, is characterized in that, the current service cell of terminal comprises: the main plot of terminal and/or in state of activation Fu community.

12. methods as claimed in claim 9, is characterized in that, the whether identical information of up TA that described terminal received and preserved a plurality of communities of base station transmission comprises:

The system message that terminal sends in current area by base station, receives the information whether identical with the up TA of current area with the up TA of other communities of current area polymerization.

13. methods as claimed in claim 9, is characterized in that, the whether identical information of up TA that described terminal received and preserved a plurality of communities of base station transmission comprises:

The system message that terminal sends by base station or dedicated signaling, receive the whether identical information of up TA that base station is supported or all communities that terminal is supported.

14. methods as claimed in claim 9, is characterized in that, describedly by initiating random access procedure, are obtained and in newly-increased community, are carried out the TA that uplink used and comprise:

Terminal is when the Indication message receiving from the initiating random access procedure of base station, according to this Indication message initiating random access procedure, to obtain the up TA of described newly-increased community.

15. methods as claimed in claim 9, is characterized in that, are obtaining by initiating random access procedure after TA that uplink used is carried out in newly-increased community, and the method further comprises:

Terminal is carried out uplink according to getting TA in described newly-increased community, and safeguards the uplink synchronous relation between described newly-increased community and base station.

16. methods as described in claim 10 or 13, is characterized in that, described dedicated signaling is:

17. methods as claimed in claim 9, is characterized in that, described cell identity information is:

18. 1 kinds of information notification apparatus, is characterized in that, this device comprises:

Whether determining unit is identical for determine the uplink timing advance TA of a plurality of communities according to the network planning;

Transmitting element, for sending the whether identical information of up TA of a plurality of communities of determining to terminal;

Wherein, whether the up TA that determines Liang Ge community according to the network planning is identical, the signal demand of Yi Ge community specifically comprises: if just can reach base station through radio frequency remote equipment RRH or repeater in described Liang Ge community, the signal of another community does not need directly to reach base station through RRH or repeater, and the up TA of described Liang Ge community is different; If the signal of described Liang Ge community all needs just can reach base station through RRH or repeater, the up TA of described Liang Ge community is identical;

Wherein, use cell index cell index or cell identity information to represent the whether identical information of described up TA.

19. devices as claimed in claim 18, is characterized in that, described determining unit is used for:

Described transmitting element is used for:

20. devices as claimed in claim 18, is characterized in that, described determining unit is used for:

Described transmitting element is used for:

21. devices as claimed in claim 18, is characterized in that, described determining unit is used for:

Described transmitting element is used for:

22. as the device as described in arbitrary in claim 19-21, it is characterized in that, this device also comprises:

Trigger element, for determine need to be when the up TA that increases aggregation cell and the newly-increased up TA of community and all current service cell of terminal for terminal newly be not identical, indicating terminal initiating random access procedure, to obtain the up TA of described newly-increased community.

23. 1 kinds of Timing Advance acquisition device, is characterized in that, this device comprises:

Receiving element, for receiving and preserving, base station is determined according to the network planning and the whether identical information of up TA of a plurality of communities of sending;

Acquiring unit, for according to the information of preserving, determines that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used;

Wherein, according to cell index cell index or the cell identity information in the information of preserving, determine that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal.

24. devices as claimed in claim 23, is characterized in that, described receiving element is used for:

25. devices as claimed in claim 23, is characterized in that, described receiving element is used for:

26. devices as claimed in claim 23, is characterized in that, described receiving element is used for:

27. devices as claimed in claim 23, is characterized in that, described acquiring unit is used for:

28. devices as claimed in claim 23, is characterized in that, this device also comprises:

Maintenance unit, for carrying out uplink according to getting TA in described newly-increased community, and safeguards the uplink synchronous relation between described newly-increased community and base station.

29. 1 kinds of multi-carrier polymerizing communication systems, is characterized in that, this system comprises:

Base station, whether identical for determine the uplink timing advance TA of a plurality of communities according to the network planning; To terminal, send the whether identical information of up TA of a plurality of communities of determining;

Terminal, for receiving and preserve the whether identical information of up TA of a plurality of communities of base station transmission; According to the information of preserving, determine that base station is whether the up TA of newly-increased community of terminal configuration is identical with the up TA of the current service cell of this terminal; If so, obtain the TA of this current service cell, using this TA as carrying out in newly-increased community the TA that uplink is used, otherwise, by initiating random access procedure, obtain in newly-increased community and carry out the TA that uplink is used;