CN108377504A

CN108377504A - A kind of Enhancement Method, device, base station and the terminal of nonrandom access switching

Info

Publication number: CN108377504A
Application number: CN201611031333.6A
Authority: CN
Inventors: 董洪; 孙立新; 丁颖哲; 周明宇
Original assignee: Baicells Technologies Co Ltd
Current assignee: Baicells Technologies Co Ltd
Priority date: 2016-11-18
Filing date: 2016-11-18
Publication date: 2018-08-07
Anticipated expiration: 2036-11-18
Also published as: WO2018090952A1; CN108377504B

Abstract

The present invention provides a kind of Enhancement Method, device, base station and the terminal of nonrandom access switching, solving the TA measured due to UE in nonrandom access handoff procedure, there are errors, if not carrying out error transfer factor to the TA of UE, it be easy to cause RRC connection reconfigurations and sets and complete the problem of message and subsequent upstream data are difficult to reliable reception.The method of the present invention includes：In nonrandom access handoff procedure, if the radio resource control RRC connection reconfiguration for successfully getting terminal transmission completes message, according to it is getting, be used for transmission RRC connection reconfigurations and set and complete the transmission signal of message, time of measuring lead TA adjusted values；The TA adjusted values measured are sent to terminal, it enables the terminal to according to the TA adjusted values, the TA measured terminal is adjusted, so that the error of UE TA is adjusted, it improves RRC connection reconfigurations and sets the reception reliability for completing message, and then improve the reception reliability of the subsequent upstream transmission data of UE.

Description

A kind of Enhancement Method, device, base station and the terminal of nonrandom access switching

Technical field

The present invention relates to the technical field of communications applications, a kind of Enhancement Method of nonrandom access switching, dress are particularly related to It sets, base station and terminal.

Background technology

In current long term evolution (Long Term Evolution, LTE) R14 systems, brought to reduce switching Delay, introduces the switching of nonrandom access (RACH-less), and user equipment (User Equipment, UE) carries out Target cell Timing Advance (Timing advance, TA) calculate, then using the TA being calculated Target cell carry out uplink hair It send.

In the TA for the Target cell that UE is calculated, the delay, measurement error and the measurement error that are measured due to UE are in the calculation Accumulation, may making the TA that UE is calculated, there are larger errors, and radio resource control is sent in Target cell so as to cause UE When system (Radio Resource Control, RRC) connection reconfiguration sets completion message, cause to reach evolved NodeB The uplink signal having time deviation of (Evolved Node B, eNB), if being not processed may cause RRC connection reconfigurations to set At the unreliable reception of message.Further, if not carrying out error transfer factor to the TA of UE, subsequent uplink may be caused Unreliable reception.

Invention content

The purpose of the present invention is to provide it is a kind of it is nonrandom access switching Enhancement Method, device, base station and terminal, to Solving the TA measured due to UE in nonrandom access handoff procedure, there are errors, if not carrying out error transfer factor to the TA of UE, are easy It causes RRC connection reconfigurations to set and completes the problem of message and subsequent upstream data are difficult to reliable reception.

To achieve the goals above, the present invention provides a kind of Enhancement Method of nonrandom access switching, it is applied to base station, Including：

In nonrandom access handoff procedure, if successfully getting the radio resource control RRC connection reconfiguration of terminal transmission Set and complete message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete the transmission signal of message, when measurement Between lead TA adjusted values；

The TA adjusted values measured are sent to the terminal.

To achieve the goals above, the embodiments of the present invention also provide it is a kind of it is nonrandom access switching intensifier, Applied to base station, including：

Measurement module is used in nonrandom access handoff procedure, if successfully getting the radio resource control of terminal transmission RRC connection reconfigurations processed, which are set, completes message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete the biography of message Defeated signal, time of measuring lead TA adjusted values；

First sending module, for the TA adjusted values measured to be sent to terminal.

To achieve the goals above, the embodiments of the present invention also provide a kind of base stations, including：

First processor is used in nonrandom access handoff procedure, if successfully getting the radio resource of terminal transmission Control RRC connection reconfigurations set and complete message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete message Transmit signal, time of measuring lead TA adjusted values；

First transmitter, for the TA adjusted values measured to be sent to the terminal.

To achieve the goals above, the embodiments of the present invention also provide it is a kind of it is nonrandom access switching Enhancement Method, Applied to terminal, including：

In nonrandom access handoff procedure, sends radio resource control RRC connection reconfiguration to base station and complete message；

Base station is obtained after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA adjusted values of transmission, the TA tune Whole value is the base station to be obtained according to the transmission signal measurement for being used for transmission the RRC connection reconfigurations and setting completion message.

To achieve the goals above, the embodiments of the present invention also provide it is a kind of it is nonrandom access switching intensifier, Applied to terminal, including：

Second sending module, in nonrandom access handoff procedure, radio resource control RRC connection to be sent to base station It reconfigures and completes message；

Acquisition module, for obtaining base station after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA tune of transmission Whole value, the TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set complete message transmission signal survey It measures.

To achieve the goals above, the embodiments of the present invention also provide a kind of terminals, including：

Second transmitter, in nonrandom access handoff procedure, radio resource control RRC connection weight to be sent to base station Message is completed in configuration；

Receiver, for obtaining base station after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA of transmission is adjusted Value, the TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set completion message transmission signal measurement It obtains.

The above-mentioned technical proposal of the present invention has the beneficial effect that：

The Enhancement Method of the nonrandom access switching of the embodiment of the present invention, in nonrandom access handoff procedure, if success The radio resource control RRC connection reconfiguration for getting terminal transmission completes message, then according to it is getting, be used for transmission it is described RRC connection reconfigurations set the transmission signal for completing message, time of measuring lead TA adjusted values；The TA adjusted values that will be measured It is sent to the terminal so that terminal can be adjusted according to the TA adjusted values, the TA measured terminal so that UE TA's Error is adjusted, and is improved RRC connection reconfigurations and is set the reception reliability for completing message, and then improves the subsequent upstream transmission number of UE According to reception reliability.

Description of the drawings

Fig. 1 is that the Enhancement Method of the nonrandom access switching of the present invention is applied to the flow chart of base station first embodiment；

Fig. 2 is the first interaction diagrams of base station and terminal in the Enhancement Method that the nonrandom access of the present invention switches；

Fig. 3 is that the Enhancement Method of the nonrandom access switching of the present invention is applied to the flow chart of base station second embodiment；

Fig. 4 is the second interaction diagrams of base station and terminal in the Enhancement Method that the nonrandom access of the present invention switches；

Fig. 5 is that the intensifier of the nonrandom access switching of the present invention is applied to the structural schematic diagram of base station；

Fig. 6 is the structural schematic diagram of base station of the present invention；

Fig. 7 is that the Enhancement Method of the nonrandom access switching of the present invention is applied to the flow chart of terminal sixth embodiment；

Fig. 8 is that the Enhancement Method of the nonrandom access switching of the present invention is applied to the flow chart of the 7th embodiment of terminal；

Fig. 9 is the third interaction diagrams of base station and terminal in the Enhancement Method that the nonrandom access of the present invention switches；

Figure 10 is that the intensifier of the nonrandom access switching of the present invention is applied to the structural schematic diagram of terminal；

Figure 11 is the structural schematic diagram of terminal of the present invention.

Specific implementation mode

To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation Example and attached drawing are described in detail.

The embodiment provides a kind of Enhancement Method, device, base station and the terminals of nonrandom access switching, solve There are errors by the TA measured due to UE in nonrandom access handoff procedure, if not carrying out error transfer factor to the TA of UE, are easy to make It is set at RRC connection reconfigurations and completes the problem of message and subsequent upstream data are difficult to reliable reception.

First embodiment

As shown in Figure 1, the embodiment provides a kind of Enhancement Method of nonrandom access switching, it is applied to base It stands, which includes：

Step 101：In nonrandom access handoff procedure, if successfully getting the radio resource control RRC of terminal transmission Connection reconfiguration, which is set, completes message, then according to it is getting, be used for transmission above-mentioned RRC connection reconfigurations and set and complete the transmission letter of message Number, time of measuring lead TA adjusted values.

In non-access handoff procedure, UE obtains RRC connection reconfigurations by target BS or source base station and sets completion message Resource (transmission signal) is sent, here, it can be specially physically to be used for transmission RRC connection reconfigurations and set the transmission signal of completion message The shared channel PUSCH transmission signal of row.Specifically, above-mentioned steps 101 may particularly include：According to it is getting, be used for transmission institute It states RRC connection reconfigurations and sets the Physical Uplink Shared Channel PUSCH transmission signal for completing message, measure the TA adjusted values.

In the embodiment of the present invention, when the TA errors that UE is calculated are little, RRC connection reconfigurations set completion message can be by target Base station is properly received, and in such cases, target BS can measure TA adjusted values according to Physical Uplink Shared Channel PUSCH, and UE is sent to adjust the error of the TA of UE calculating.

Step 102：The TA adjusted values measured are sent to terminal.

Terminal is adjusted according to the TA that the TA adjusted values received calculate terminal itself, is improved RRC connection reconfigurations and is set The reception reliability of message is completed, and further increases the reception reliability of subsequent upstream data.

The interaction flow of base station and terminal in the embodiment of the present invention is illustrated with reference to Fig. 2.

As shown in Fig. 2, above-mentioned interaction flow includes：

Step 201：Terminal sets to target BS transmission RRC connection reconfigurations and completes message.

Step 202：Target BS, which successfully obtains RRC connection reconfigurations, to be set and completes message, and is connected according to above-mentioned RRC is used for transmission Connect the transmission signal for reconfiguring and completing message, time of measuring lead TA adjusted values.

Step 203：Target BS sends RRC connection reconfigurations to terminal and sets the successful confirmation message of completion message acquisition.

Step 204：Target BS sends the TA signalings for carrying TA adjusted values to terminal.

Terminal is adjusted according to the TA that the TA adjusted values got calculate terminal itself, improves subsequent upstream data Reception reliability.

The Enhancement Method of the nonrandom access switching of the embodiment of the present invention, in nonrandom access handoff procedure, if success The radio resource control RRC connection reconfiguration for getting terminal transmission completes message, then heavy according to the RRC connections are used for transmission The transmission signal of message, time of measuring lead TA adjusted values are completed in configuration；The TA adjusted values measured are sent to end End so that terminal can be adjusted according to the TA adjusted values, the TA measured terminal so that the error of UE TA is adjusted, It improves RRC connection reconfigurations and sets the reception reliability for completing message, and then the reception for improving the subsequent upstream transmission data of UE is reliable Property.

Second embodiment

As shown in figure 3, the embodiment provides a kind of Enhancement Method of nonrandom access switching, it is applied to base It stands, including：

Step 301：In nonrandom access handoff procedure, if successfully getting the radio resource control RRC of terminal transmission Connection reconfiguration, which is set, completes message, then according to it is getting, be used for transmission above-mentioned RRC connection reconfigurations and set and complete the physical uplink of message Shared channel PUSCH transmission signal, measures the TA adjusted values.

It in a specific embodiment of the present invention, can be according to the cyclic prefix CP in PUSCH transmission signal, demodulated reference signal DMRS or detection reference signal SRS measures above-mentioned TA adjusted values, illustrates separately below.

(1) above-mentioned TA adjusted values are measured according to the cyclic prefix CP in PUSCH transmission signal.

At this point, above-mentioned steps 301 specifically include：In the PUSCH transmission signal, the cycle of a data symbol is determined The prefix CP time starteds；Started according to identified CP time starteds and the CP of data symbol in pre-assigned PUSCH resources The difference of time obtains the TA adjusted values.

Wherein, in the PUSCH transmission signal, the step of determining the cyclic prefix CP time started of a data symbol It may particularly include：The PUSCH transmission signal is sampled, a data symbol is obtained；In the data symbol that sampling obtains Middle selection length one piece of data identical with the CP length；The data symbol that the one piece of data of selection and sampling are obtained The data of tail portion are compared, at the beginning of obtaining the CP of the data symbol.

Here, base station is set in transmission RRC connection reconfigurations in the time domain for the PUSCH transmission signal for completing message, is sampled, Specifically, intercepting a data symbol by a sliding window, one section identical with CP length is chosen in the data symbol Data, and be compared with the data of the data symbol tail portion, when the data of data symbol tail portion and the data segment of selection are identical When, at the beginning of the CP that the initial position of sliding window is determined as to data symbol；It is at the beginning of according to the CP and pre- The difference of the CP time starteds of data symbol, obtains TA adjusted values in the PUSCH resources first distributed.Wherein, above-mentioned data symbol Specially orthogonal frequency division multiplex OFDM symbol.

(2) above-mentioned TA adjusted values are measured according to the demodulated reference signal DMRS in PUSCH transmission signal.

At this point, above-mentioned steps 301 specifically include：In the PUSCH transmission signal, determine demodulated reference signal DMRS's Position, wherein the DMRS sequences that identified position demodulates in pre-assigned PUSCH resources DMRS sequences it is related Spend highest；The position of identified DMRS is compared with the position of DMRS in the pre-assigned PUSCH resources, is obtained The TA adjusted values.

In the embodiment of the present invention, base station is found in transmission RRC connection reconfigurations set the PUSCH transmission signal for completing message The time location of DMRS horizontally slips then since this time location, until finding a position, on this position The location determination is then by the degree of correlation highest of the DMRS sequences that demodulate and DMRS sequences in pre-assigned PUSCH resources The position of identified DMRS is compared by the position of DMRS with the position of DMRS in the pre-assigned PUSCH resources, Obtain the TA adjusted values.

(3) above-mentioned TA adjusted values are measured according to the detection reference signal SRS in PUSCH transmission signal.

At this point, above-mentioned steps 301 specifically include：In the PUSCH transmission signal, determine demodulated reference signal SRS's Position, wherein in the degree of correlation of the SRS sequences that identified position demodulates and SRS sequences in pre-assigned PUSCH resources Highest；The position of identified SRS is compared with the position of SRS in the pre-assigned PUSCH resources, is obtained described TA adjusted values.

In the embodiment of the present invention, base station is found in transmission RRC connection reconfigurations set the PUSCH transmission signal for completing message The time location of SRS horizontally slips then since this time location, until finding a position, solves on this position The location determination is then SRS by the degree of correlation highest of the SRS sequences recalled and the SRS sequences in pre-assigned PUSCH resources Position, the position of identified SRS is compared with the position of SRS in the pre-assigned PUSCH resources, obtains institute State TA adjusted values.

Step 302：The TA adjusted values measured are sent to above-mentioned terminal.

Terminal is adjusted according to the TA that the TA adjusted values got calculate terminal itself, is improved RRC connection reconfigurations and is set The reception reliability of message is completed, and further increases the reception reliability of subsequent upstream data.

The Enhancement Method of the nonrandom access switching of the embodiment of the present invention, in nonrandom access handoff procedure, if success The radio resource control RRC connection reconfiguration for getting terminal transmission completes message, then heavy according to above-mentioned RRC connections are used for transmission The Physical Uplink Shared Channel PUSCH transmission signal of message is completed in configuration, measures the TA adjusted values；The TA that will be measured Adjusted value is sent to above-mentioned terminal so that terminal can be adjusted according to the TA adjusted values, the TA measured terminal so that UE The error of TA is adjusted, and is improved RRC connection reconfigurations and is set the reception reliability for completing message, and then the subsequent upstream for improving UE passes The reception reliability of transmission of data.

3rd embodiment

The embodiment of the present invention additionally provides a kind of Enhancement Method of nonrandom access switching, is applied to base station, the enhancing side Method includes：

In nonrandom access handoff procedure, if obtaining the radio resource control RRC connection reconfiguration that terminal is sent not successfully Set and complete message, and the RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then to It is extended processing, and usage time window in the time window for obtaining the acquisition resource that the RRC connection reconfigurations set completion message The RRC connection reconfigurations that terminal retransmits described in acquisition resource acquisition after mouth extension process, which are set, completes message, or

Processing is extended to the cyclic prefix CP length for obtaining resource, and uses obtaining after CP length extension process Resource is taken, the terminal is obtained and is set using the extension CP RRC connection reconfigurations sent and complete message.

Wherein, above-mentioned acquisition resource can be specially the preconfigured resource in base station.

In embodiments of the present invention, the re-transmission time for completing message can be set with RRC connection reconfigurations according to default extension step value Several correspondences is extended processing, wherein the extension step value is secondary with retransmitting to the time window for obtaining resource Several increase and increase.Such as, RRC connection reconfigurations, which are set, completes when message is transmitted for the first time when obtaining unsuccessful, and base station is by time window Mouth expands 2 OFDM symbols, and when second of transmission is still unsuccessful, time window is expanded 4 OFDM symbols.

In embodiments of the present invention, it can be set with RRC connection reconfigurations according to the CP extension lengths value made an appointment and complete message Number of retransmissions correspondence, to it is described obtain resource CP length be extended processing, wherein the CP extension lengths value Increase with the increase of number of retransmissions.Wherein, above-mentioned correspondence can be made an appointment by base station and terminal both sides, also can be by base Station is pre-configured with above-mentioned correspondence.

It is specifically described below in the embodiment of the present invention, RRC connection reconfigurations set completion message and success, and the RRC has not been obtained When the number of transmissions that connection reconfiguration sets completion message not up to presets maximum retransmission, the interaction flow of base station and terminal.

As shown in figure 4, the interaction flow of base station and terminal includes in the embodiment of the present invention：

Step 401：Terminal sets to target BS transmission RRC connection reconfigurations and completes message.

Step 402：Target BS obtains above-mentioned RRC connection reconfigurations not successfully to be set and completes message, and sending one to terminal is used for It indicates that RRC connection reconfigurations are set and completes the feedback message that message obtains failure.

Step 403：Target BS using enhancing method, improve next time RRC connection reconfigurations set completion message reception at Power.

Here the method enhanced may particularly include following two.

1. target BS, which expands, receives window.

The length of one radio frames is 10ms comprising 10 subframes, each subframe include two time slots, each radio frames Equal to 140 symbols (routine), in the embodiment of the present invention, target BS, which expands, receives the PUSCH that RRC connection reconfigurations set completion message The time window of signal, specifically, can forwardly and rearwardly expand the time span of a symbol simultaneously, it also can only forward or backward Expand corresponding time span.In this widened time window, using method flow shown in Fig. 2, attempt to receive RRC companies It connects to reconfigure and completes message, and measure TA adjusted values.

In order to not introduce interference in widened time window, base station needed to make in the cell of base station within the widened time Do not send signal.

Base station can take a certain step-length of setting, gradually expand the method for receiving window.Such as the RRC connection reconfigurations in UE Set and complete to receive when message is transmitted for the first time unsuccessful, base station, which expands, receives 2 symbols of window, second transmission still not at When work(, expands and receive 4 symbols of window.

2. target BS is set using the extension CP RRC connection reconfigurations sent using the CP reception terminals of extension and completes message.

UE is when transmission RRC connection reconfigurations set completion message, using the CP longer than conventional CP.Base station uses corresponding CP Length, using method flow shown in Fig. 2, trial reception RRC connection reconfigurations, which are set, completes message, and measures TA adjusted values.

Step 404：RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, terminal weight New transmission RRC connection reconfigurations, which are set, completes message.

Step 405：Target BS, which successfully obtains RRC connection reconfigurations, to be set and completes message, according to being used for transmission above-mentioned RRC connections Reconfigure the transmission resource for completing message, time of measuring lead TA adjusted values.

Here transmission resource can be specially that PUSCH sends resource.

Step 406：Target BS sends RRC connection reconfigurations to terminal and sets the successful confirmation message of completion message acquisition.

Step 407：Target BS sends the TA signalings for carrying TA adjusted values to terminal.

When UE calculate TA errors be so large that RRC connection reconfigurations set complete message first time transmission cannot be by target Base station successfully obtains.In such cases, the method that target BS can use enhancing has been set with improving RRC connection reconfigurations next time The probability successfully obtained at message.After RRC connection reconfigurations, which set completion message, successfully to be obtained, target BS adjusts the TA of measurement Value is sent to UE to adjust the error of the TA of UE calculating.

The Enhancement Method of the nonrandom access switching of the embodiment of the present invention, makes Target cell have the case where error in UE TA Under, the error of UE TA can be adjusted, improve RRC connection reconfigurations and set the reception reliability for completing message, further increase UE The reception reliability of subsequent upstream transmission data.

Fourth embodiment

As shown in figure 5, the embodiments of the present invention also provide a kind of intensifier 500 of nonrandom access switching, application In base station, including：

Measurement module 501 is used in nonrandom access handoff procedure, if successfully getting the radio resource of terminal transmission Control RRC connection reconfigurations set and complete message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete message Transmit signal, time of measuring lead TA adjusted values；

First sending module 502, for the TA adjusted values measured to be sent to terminal.

The intensifier of the nonrandom access switching of the embodiment of the present invention, the measurement module 501 are used for basis and get , be used for transmission the RRC connection reconfigurations and set the Physical Uplink Shared Channel PUSCH transmission signal for completing message, described in measurement TA adjusted values.

The intensifier of the nonrandom access switching of the embodiment of the present invention, the measurement module 501 include：

First determination sub-module 5011 is used in the PUSCH transmission signal, before the cycle for determining a data symbol Sew the CP time starteds；

Second determination sub-module 5012, for according in identified CP time starteds and pre-assigned PUSCH resources The difference of the CP time starteds of data symbol obtains the TA adjusted values.

The intensifier of the nonrandom access switching of the embodiment of the present invention, first determination sub-module 5011 include：

Sampling unit 50111 obtains a data symbol for being sampled to the PUSCH transmission signal；

Selection unit 50112, for choosing length and the CP length identical one in the data symbol that sampling obtains Segment data；

Determination unit 50113, the data of the data symbol tail portion for obtaining the one piece of data of selection and sampling It is compared, at the beginning of obtaining the CP of the data symbol.

Third determination sub-module 5013, in the PUSCH transmission signal, determining the position of demodulated reference signal DMRS It sets, wherein in the degree of correlation of the DMRS sequences that identified position demodulates and DMRS sequences in pre-assigned PUSCH resources Highest；

4th determination sub-module 5014 is used for the position of identified DMRS and the pre-assigned PUSCH resources The position of middle DMRS is compared, and obtains the TA adjusted values.

5th determination sub-module 5015, in the PUSCH transmission signal, determining the position of demodulated reference signal SRS Set, wherein SRS sequences that identified position demodulates and SRS sequences in pre-assigned PUSCH resources the degree of correlation most It is high；

6th determination sub-module 5016, for will be in the position of identified SRS and the pre-assigned PUSCH resources The position of SRS is compared, and obtains the TA adjusted values.

The embodiment of the present invention nonrandom access switching intensifier, further include：

First expansion module 503 is used in nonrandom access handoff procedure, if obtaining the wireless of terminal transmission not successfully Resources control RRC connection reconfigurations, which are set, completes message, and the RRC connection reconfigurations set complete message the number of transmissions it is not up to default Maximum retransmission then expands the time window that the acquisition resource for completing message is set for obtaining the RRC connection reconfigurations Exhibition is handled, and treated obtains resource for usage time Window Scale, obtains the RRC connections that the terminal retransmits and weighs Message is completed in configuration.

The intensifier of the nonrandom access switching of the embodiment of the present invention, first expansion module 503 are used for according to pre- If extension step value sets the correspondence for the number of retransmissions for completing message with RRC connection reconfigurations, to the time for obtaining resource Window is extended processing, wherein the extension step value increases with the increase of number of retransmissions.

Second expansion module 504 is used in nonrandom access handoff procedure, if obtaining the wireless of terminal transmission not successfully Resources control RRC connection reconfigurations, which are set, completes message, and the RRC connection reconfigurations set complete message the number of transmissions it is not up to default Maximum retransmission, then to for obtain the RRC connection reconfigurations set complete message acquisition resource cyclic prefix CP length It is extended processing, and using the acquisition resource after CP length extension process, obtains the RRC that the terminal is sent using extension CP Connection reconfiguration, which is set, completes message.

The intensifier of the nonrandom access switching of the embodiment of the present invention, second expansion module 504 are used for according to pre- The CP extension lengths value first arranged sets the correspondence for the number of retransmissions for completing message with RRC connection reconfigurations, is provided to the acquisition The CP length in source is extended processing, wherein the CP extension lengths value increases with the increase of number of retransmissions.

The intensifier of the nonrandom access switching of the embodiment of the present invention, in nonrandom access handoff procedure, if success The radio resource control RRC connection reconfiguration for getting terminal transmission completes message, then according to it is getting, be used for transmission it is described RRC connection reconfigurations set the transmission signal for completing message, time of measuring lead TA adjusted values；The TA adjusted values that will be measured It is sent to terminal so that terminal can be adjusted according to the TA adjusted values, the TA measured terminal so that the error of UE TA It is adjusted, improves RRC connection reconfigurations and set the reception reliability for completing message, and then improve the subsequent upstream transmission data of UE Reception reliability.

It should be noted that the intensifier of the nonrandom access switching is the enhancing side with above-mentioned nonrandom access switching The corresponding device of method, all realization methods also can suitable for the embodiment of the device wherein in above method embodiment Reach same technique effect.

5th embodiment

As shown in fig. 6, the embodiments of the present invention also provide a kind of base stations, including：

First processor 601 is used in nonrandom access handoff procedure, if successfully getting the wireless money of terminal transmission Source control RRC connection reconfigurations set and complete message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete message Transmission signal, time of measuring lead TA adjusted values；

First transmitter 602, for the TA adjusted values measured to be sent to terminal.

The first processor 601 can also be configured and realize the intensifier embodiment of above-mentioned nonrandom access switching In the function realized of all modules, can also reach and the attainable phase of intensifier embodiment institute of above-mentioned nonrandom access switching Same technique effect.

Sixth embodiment

As shown in fig. 7, the embodiments of the present invention also provide a kind of Enhancement Method of nonrandom access switching, it is applied to eventually End, including：

Step 701：In nonrandom access handoff procedure, it is complete to send radio resource control RRC connection reconfiguration to base station At message.

Step 702：Base station is obtained after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA adjusted values of transmission, The TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set completion message transmission signal measurement obtain 's.

Here TA adjusted values are that base station successfully obtains after RRC connection reconfigurations set and complete message, according to being used for transmission RRC connection reconfigurations, which are set, to be completed the PUSCH transmission signal measurement of message and obtains.

Further, in the embodiment of the present invention, the acquisition base station disappears successfully obtaining the RRC connection reconfigurations and set completion After breath, the step of the TA adjusted values of transmission after, the Enhancement Method further includes：

According to the TA adjusted values, the TA measured terminal is adjusted, and according to the TA transmission datas after adjustment.

The Enhancement Method of the nonrandom access switching of the embodiment of the present invention, in nonrandom access handoff procedure, to base station It sends radio resource control RRC connection reconfiguration and completes message；It obtains base station and sets completion successfully obtaining the RRC connection reconfigurations After message, TA adjusted values of transmission, and according to the TA adjusted values, the TA measured terminal is adjusted, and according to adjustment after TA transmission datas ensure that the reliable reception of subsequent upstream transmission data.

7th embodiment

As shown in figure 8, the Enhancement Method of the nonrandom access switching of the embodiment of the present invention, is applied to terminal, the enhancing side Method includes：

Step 801：In nonrandom access handoff procedure, it is complete to send radio resource control RRC connection reconfiguration to base station At message.

Step 802：If the RRC connection reconfigurations that are used to indicate for getting base station return set completion message acquisition failure Feedback message, and the RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then using expansion The exhibition cyclic prefix CP retransmission RRC connection reconfigurations, which are set, completes message.

Specifically, the number of retransmissions for completing message is set with RRC connection reconfigurations according to the CP extension lengths value made an appointment Correspondence, the CP length that the transmission signal for completing message is set to being used for transmission the RRC connection reconfigurations are extended processing；It adopts It is set with the transmission signal retransmission RRC connection reconfigurations after CP length extension process and completes message.

Further, described in nonrandom access handoff procedure in the embodiment of the present invention, send radio resource to base station After control RRC connection reconfigurations set the step of completing message, the Enhancement Method further includes：

If get base station return be used to indicate the RRC connection reconfigurations set complete message obtain failure feedback disappear Breath, and the RRC connection reconfigurations set complete message the number of transmissions reach default maximum retransmission, then to the base station send Physical Random Access Channel heading.

With reference to Fig. 9, illustrates RRC connection reconfigurations in the embodiment of the present invention and set completion message acquisition failure, and RRC When the number of transmissions that connection reconfiguration sets completion message reaches default maximum retransmission, the interaction flow of terminal and base station.

As shown in figure 9, the interaction flow includes：

Step 901：Terminal sets to target BS transmission RRC connection reconfigurations and completes message.

Step 902：Target BS obtains above-mentioned RRC connection reconfigurations not successfully to be set and completes message, and sending one to terminal is used for It indicates that RRC connection reconfigurations are set and completes the feedback message that message obtains failure.

Step 903：Target BS adjusts PUSCH and obtains window.

Step 904：RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, terminal weight New transmission RRC connection reconfigurations, which are set, completes message.

Step 905：Target BS still obtains above-mentioned RRC connection reconfigurations not successfully to be set and completes message, and sending one to terminal uses The feedback message completed message and obtain failure is set in instruction RRC connection reconfigurations.

Step 906：The number of transmissions that RRC connection reconfigurations set completion message reaches default maximum retransmission, sends physics Random access channel message head PRACH preamble are to base station.

When UE calculate TA errors are very big or mistake so that RRC connection reconfigurations, which are transmitted several times, sets that complete message equal It cannot correctly be obtained by target BS.In such cases, UE sends PRACH preamble, carries out random access.

8th embodiment

As shown in Figure 10, the embodiment provides a kind of intensifier 1000 of nonrandom access switching, applications In terminal, including：

Second sending module 1001, in nonrandom access handoff procedure, radio resource control RRC to be sent to base station Connection reconfiguration, which is set, completes message；

Acquisition module 1002, for obtaining base station after successfully obtaining the RRC connection reconfigurations and setting completion message, transmission TA adjusted values, the TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set complete message transmission letter It number measures and to obtain.

Adjust module 1003, for according to the TA adjusted values, the TA measured terminal to be adjusted, and according to adjustment after TA transmission datas.

Module 1004 is retransmitted, if the RRC connection reconfigurations that are used to indicate for getting base station return set completion Message obtains the feedback message of failure, and the RRC connection reconfigurations set the not up to default maximum weight of the number of transmissions for completing message Number is passed, then uses the extended cyclic prefix CP retransmissions RRC connection reconfigurations to set and completes message.

The intensifier of the nonrandom access switching of the embodiment of the present invention, the retransmission module 1004 include：

Submodule 10041 is extended, message is completed for being set with RRC connection reconfigurations according to the CP extension lengths value made an appointment Number of retransmissions correspondence, to be used for transmission the RRC connection reconfigurations set complete message transmission signal CP length into Row extension process；

Sending submodule 10042, for retransmitting the RRC connections using the transmission signal after CP length extension process It reconfigures and completes message.

Third sending module 1005, if the RRC connection reconfigurations that are used to indicate for getting base station return set completion Message obtains the feedback message of failure, and the RRC connection reconfigurations set and complete the number of transmissions of message and reach default maximum and retransmit Number then sends Physical Random Access Channel heading to the base station.

The intensifier of the nonrandom access switching of the embodiment of the present invention, in nonrandom access handoff procedure, to base station It sends radio resource control RRC connection reconfiguration and completes message；It obtains base station and sets completion successfully obtaining the RRC connection reconfigurations After message, TA adjusted values of transmission, and according to the TA adjusted values, the TA measured terminal is adjusted, and according to adjustment after TA transmission datas ensure that the reliable reception of subsequent upstream transmission data.

9th embodiment

As shown in figure 11, the embodiments of the present invention also provide a kind of terminals, including：

Second transmitter 1101, in nonrandom access handoff procedure, sending radio resource control RRC to base station and connecting It connects to reconfigure and completes message；

Receiver 1102, for obtaining base station after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA of transmission Adjusted value, the TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set completion message transmission signal What measurement obtained.

The terminal of the embodiment of the present invention may also include a processor, which can be configured and realize above-mentioned nonrandom The function that all modules are realized in the intensifier embodiment of switching is accessed, the increasing with above-mentioned nonrandom access switching can be also reached The attainable identical technique effect of intensity device embodiment institute.

Terminal described in the embodiment of the present invention, can be mobile phone (or mobile phone) or it is other can send or The equipment for receiving wireless signal, including user equipment (terminal), personal digital assistant (PDA), wireless modem, channel radio T unit, hand-held device, laptop computer, wireless phone, wireless local loop (WLL) stand, can convert movable signal It spontaneous can be communicated with mobile communications network for the CPE or Mifi of wifi signals, intelligent appliance or other obstructed remarkable operations Equipment etc..

In addition it should be pointed out that in apparatus and method of the present invention, it is clear that each component or each step are can to divide It solves and/or reconfigures.These decompose and/or reconfigure the equivalent scheme that should be regarded as the present invention.Also, execute above-mentioned system The step of column processing, can execute according to the sequence of explanation in chronological order naturally, but not need to be centainly suitable according to the time Sequence executes, and certain steps can execute parallel or independently of one another.For those of ordinary skill in the art, it is to be understood that this The whole either any steps or component of the method and apparatus of invention, can any computing device (including processor, storage Medium etc.) either to be realized with hardware, firmware, software or combination thereof in the network of computing device, this is this field What those of ordinary skill can be achieved in the case where having read the explanation of the present invention with their basic programming skill.

Therefore, the purpose of the present invention can also by run on any computing device a program or batch processing come It realizes.The computing device can be well known fexible unit.Therefore, the purpose of the present invention can also include only by offer The program product of the program code of the method or device is realized to realize.That is, such program product is also constituted The present invention, and the storage medium for being stored with such program product also constitutes the present invention.Obviously, the storage medium can be Any well known storage medium or any storage medium that developed in the future.It may also be noted that the present invention's In device and method, it is clear that each component or each step can be decomposed and/or be reconfigured.These decomposition and/or again group Close the equivalent scheme that should be regarded as the present invention.Also, the step of executing above-mentioned series of processes can be naturally according to the sequence of explanation It executes in chronological order, but does not need to centainly execute sequentially in time.Certain steps can parallel or independently of one another It executes.

The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

A1. a kind of Enhancement Method of nonrandom access switching, is applied to base station, which is characterized in that including：

The TA adjusted values measured are sent to the terminal.

A2. according to A1 nonrandom access switching Enhancement Method, which is characterized in that according to it is getting, be used for It transmits the RRC connection reconfigurations and sets the transmission signal for completing message, the step of time of measuring lead TA adjusted values includes：

According to it is getting, be used for transmission the RRC connection reconfigurations set complete message Physical Uplink Shared Channel PUSCH Signal is transmitted, the TA adjusted values are measured.

A3. according to A2 nonrandom access switching Enhancement Method, which is characterized in that according to it is getting, be used for It transmits the RRC connection reconfigurations and sets the Physical Uplink Shared Channel PUSCH transmission signal for completing message, measure the TA adjusted values The step of include：

In the PUSCH transmission signal, the cyclic prefix CP time started of a data symbol is determined；

According to the difference of the CP time starteds of data symbol in identified CP time starteds and pre-assigned PUSCH resources Value, obtains the TA adjusted values.

A4. the Enhancement Method of the nonrandom access switching according to A3, which is characterized in that described to be passed in the PUSCH In defeated signal, the step of cyclic prefix CP time started for determining a data symbol, includes：

The PUSCH transmission signal is sampled, a data symbol is obtained；

Length one piece of data identical with the CP length is chosen in the data symbol that sampling obtains；

The data for the data symbol tail portion that the one piece of data of selection and sampling obtain are compared, the number is obtained At the beginning of CP according to symbol.

A5. according to A2 nonrandom access switching Enhancement Method, which is characterized in that according to it is getting, be used for It transmits the RRC connection reconfigurations and sets the Physical Uplink Shared Channel PUSCH transmission signal for completing message, measure the TA adjusted values The step of include：

In the PUSCH transmission signal, the position of demodulated reference signal DMRS is determined, wherein in identified position The degree of correlation highest of the DMRS sequences demodulated and DMRS sequences in pre-assigned PUSCH resources；

The position of identified DMRS is compared with the position of DMRS in the pre-assigned PUSCH resources, is obtained To the TA adjusted values.

A6. according to A2 nonrandom access switching Enhancement Method, which is characterized in that according to it is getting, be used for It transmits the RRC connection reconfigurations and sets the Physical Uplink Shared Channel PUSCH transmission signal for completing message, measure the TA adjusted values The step of include：

In the PUSCH transmission signal, the position of demodulated reference signal SRS is determined, wherein solved in identified position The degree of correlation highest of the SRS sequences recalled and SRS sequences in pre-assigned PUSCH resources；

The position of identified SRS is compared with the position of SRS in the pre-assigned PUSCH resources, is obtained The TA adjusted values.

A7. the Enhancement Method of the nonrandom access switching according to A1, which is characterized in that the Enhancement Method is also wrapped It includes：

In nonrandom access handoff procedure, if obtaining the radio resource control RRC connection reconfiguration that terminal is sent not successfully Set and complete message, and the RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then to It is extended processing, and usage time window in the time window for obtaining the acquisition resource that the RRC connection reconfigurations set completion message Acquisition resource after mouthful extension process obtains the RRC connection reconfigurations that the terminal retransmits and sets and completes message.

A8. the Enhancement Method of the nonrandom access switching according to A7, which is characterized in that being used to obtain the RRC Connection reconfiguration set complete include the step of the time window of acquisition resource of message is extended processing：

The correspondence for setting the number of retransmissions for completing message with RRC connection reconfigurations according to default extension step value, to described The time window for obtaining resource is extended processing, wherein the extension step value increases with the increase of number of retransmissions.

A9. the Enhancement Method of the nonrandom access switching according to A1, which is characterized in that the Enhancement Method is also wrapped It includes：

In nonrandom access handoff procedure, if obtaining the radio resource control RRC connection reconfiguration that terminal is sent not successfully Set and complete message, and the RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then to It is extended processing in the cyclic prefix CP length for obtaining the acquisition resource that the RRC connection reconfigurations set completion message, and is used Acquisition resource after CP length extension process is obtained the terminal and is set using the extension CP RRC connection reconfigurations sent and completes message.

A10. the Enhancement Method of the nonrandom access switching according to A9, which is characterized in that the acquisition resource The step of cyclic prefix CP length is extended processing include：

The corresponding pass for the number of retransmissions for completing message is set with RRC connection reconfigurations according to the CP extension lengths value made an appointment System, to it is described obtain resource CP length be extended processing, wherein the CP extension lengths value with the increase of number of retransmissions and Increase.

B11. a kind of intensifier of nonrandom access switching, is applied to base station, which is characterized in that including：

B12. the intensifier of the nonrandom access switching according to B11, which is characterized in that the measurement module is used for According to it is getting, be used for transmission the RRC connection reconfigurations set complete message Physical Uplink Shared Channel PUSCH transmission letter Number, measure the TA adjusted values.

B13. the intensifier of the nonrandom access switching according to B12, which is characterized in that the measurement module packet It includes：

First determination sub-module, in the PUSCH transmission signal, determining the cyclic prefix CP of a data symbol Time started；

Second determination sub-module, for according to data in identified CP time starteds and pre-assigned PUSCH resources The difference of the CP time starteds of symbol obtains the TA adjusted values.

B14. the intensifier of the nonrandom access switching according to B13, which is characterized in that described first determines submodule Block includes：

Sampling unit obtains a data symbol for being sampled to the PUSCH transmission signal；

Selection unit, for choosing a length hop count identical with the CP length in the data symbol that sampling obtains According to；

The data of determination unit, the data symbol tail portion for obtaining the one piece of data of selection with sampling compare Compared at the beginning of obtaining the CP of the data symbol.

B15. the intensifier of the nonrandom access switching according to B12, which is characterized in that the measurement module packet It includes：

Third determination sub-module, in the PUSCH transmission signal, determining the position of demodulated reference signal DMRS, Wherein, DMRS sequences that identified position demodulates and DMRS sequences in pre-assigned PUSCH resources the degree of correlation most It is high；

4th determination sub-module, for will be in the position of identified DMRS and the pre-assigned PUSCH resources The position of DMRS is compared, and obtains the TA adjusted values.

B16. the intensifier of the nonrandom access switching according to B12, which is characterized in that the measurement module packet It includes：

5th determination sub-module, in the PUSCH transmission signal, determining the position of demodulated reference signal SRS, In, in the degree of correlation highest of the SRS sequences that identified position demodulates and SRS sequences in pre-assigned PUSCH resources；

6th determination sub-module is used for SRS in the position of identified SRS and the pre-assigned PUSCH resources Position be compared, obtain the TA adjusted values.

B17. the intensifier of the nonrandom access switching according to B11, which is characterized in that further include：

First expansion module is used in nonrandom access handoff procedure, if obtaining the wireless money that terminal is sent not successfully Source control RRC connection reconfigurations set and complete message, and the RRC connection reconfigurations set complete the number of transmissions of message not up to it is default most Big number of retransmissions is then extended the time window that the acquisition resource for completing message is set for obtaining the RRC connection reconfigurations Processing, and treated obtains resource for usage time Window Scale, obtains the RRC connection reconfigurations that the terminal retransmits It sets and completes message.

B18. the intensifier of the nonrandom access switching according to B17, which is characterized in that first expansion module Correspondence for setting the number of retransmissions for completing message with RRC connection reconfigurations according to default extension step value, to the acquisition The time window of resource is extended processing, wherein the extension step value increases with the increase of number of retransmissions.

B19. the intensifier of the nonrandom access switching according to B11, which is characterized in that further include：

Second expansion module is used in nonrandom access handoff procedure, if obtaining the wireless money that terminal is sent not successfully Source control RRC connection reconfigurations set and complete message, and the RRC connection reconfigurations set complete the number of transmissions of message not up to it is default most Big number of retransmissions, then to for obtain the RRC connection reconfigurations set complete message acquisition resource cyclic prefix CP length into Row extension process, and using the acquisition resource after CP length extension process, obtain the terminal and connected using the extension CP RRC sent It connects to reconfigure and completes message.

B20. the intensifier of the nonrandom access switching according to B19, which is characterized in that second expansion module Correspondence for setting the number of retransmissions for completing message with RRC connection reconfigurations according to the CP extension lengths value made an appointment, it is right The CP length for obtaining resource is extended processing, wherein the CP extension lengths value increases with the increase of number of retransmissions.

C21. a kind of base station, which is characterized in that including：

D22. a kind of Enhancement Method of nonrandom access switching, is applied to terminal, which is characterized in that including：

D23. according to D22 nonrandom access switching Enhancement Method, which is characterized in that the acquisition base station at After the step of work(obtains after the RRC connection reconfigurations set and complete message, the TA adjusted values of transmission, the Enhancement Method is also wrapped It includes：

D24. the Enhancement Method of the nonrandom access switching according to D22, which is characterized in that described in nonrandom access In handoff procedure, after sending the step of radio resource control RRC connection reconfiguration completes message to base station, the Enhancement Method Further include：

If get base station return be used to indicate the RRC connection reconfigurations set complete message obtain failure feedback disappear Breath, and the RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then use Extended Cyclic The prefix CP retransmissions RRC connection reconfigurations, which are set, completes message.

D25. the Enhancement Method of the nonrandom access switching according to D24, which is characterized in that use extended cyclic prefix The CP retransmissions RRC connection reconfigurations set completion message：

The corresponding pass for the number of retransmissions for completing message is set with RRC connection reconfigurations according to the CP extension lengths value made an appointment System, the CP length that the transmission signal for completing message is set to being used for transmission the RRC connection reconfigurations are extended processing；

It is set using the transmission signal retransmission RRC connection reconfigurations after CP length extension process and completes message.

D26. the Enhancement Method of the nonrandom access switching according to D22, which is characterized in that described in nonrandom access In handoff procedure, after sending the step of radio resource control RRC connection reconfiguration completes message to base station, the Enhancement Method Further include：

E27. a kind of intensifier of nonrandom access switching, is applied to terminal, which is characterized in that including：

E28. the intensifier of the nonrandom access switching according to E27, which is characterized in that further include：

Module is adjusted, for according to the TA adjusted values, the TA measured terminal to be adjusted, and according to the TA after adjustment Transmission data.

E29. the intensifier of the nonrandom access switching according to E27, which is characterized in that further include：

Module is retransmitted, if the RRC connection reconfigurations that are used to indicate for getting base station return set and complete message The feedback message to fail is obtained, and the RRC connection reconfigurations set the not up to default maximum re-transmission time of the number of transmissions for completing message Number then uses the extended cyclic prefix CP retransmissions RRC connection reconfigurations to set and completes message.

E30. the intensifier of the nonrandom access switching according to E29, which is characterized in that the retransmission module Including：

Submodule is extended, for setting the weight for completing message with RRC connection reconfigurations according to the CP extension lengths value made an appointment The correspondence for passing number, the CP length that the transmission signal for completing message is set to being used for transmission the RRC connection reconfigurations expand Exhibition is handled；

Sending submodule, for retransmitting the RRC connection reconfigurations using the transmission signal after CP length extension process It sets and completes message.

E31. the intensifier of the nonrandom access switching according to E27, which is characterized in that further include：

Third sending module, if the RRC connection reconfigurations that are used to indicate for getting base station return set and complete message Obtain failure feedback message, and the RRC connection reconfigurations set complete message the number of transmissions reach default maximum retransmission, Then Physical Random Access Channel heading is sent to the base station.

F32. a kind of terminal, which is characterized in that including：

Receiver, for obtaining base station after being properly received the RRC connection reconfigurations and setting completion message, the TA of transmission is adjusted Value, the TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set completion message transmission signal measurement It obtains.

Claims

1. a kind of Enhancement Method of nonrandom access switching, is applied to base station, which is characterized in that including：

In nonrandom access handoff procedure, if the radio resource control RRC connection reconfiguration for successfully getting terminal transmission is complete At message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete the transmission signal of message, time of measuring carries Preceding amount TA adjusted values；

The TA adjusted values measured are sent to the terminal.

2. the Enhancement Method of nonrandom access switching according to claim 1, which is characterized in that according to get, use The transmission signal of message is completed in transmitting the RRC connection reconfigurations and setting, the step of time of measuring lead TA adjusted values includes：

According to it is getting, be used for transmission the RRC connection reconfigurations set complete message Physical Uplink Shared Channel PUSCH transmission Signal measures the TA adjusted values.

3. the Enhancement Method of nonrandom access switching according to claim 1, which is characterized in that the Enhancement Method is also wrapped It includes：

In nonrandom access handoff procedure, if it is complete to obtain the radio resource control RRC connection reconfiguration that terminal is sent not successfully At message, and the RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then to being used to obtain The time window that the RRC connection reconfigurations set the acquisition resource for completing message is taken to be extended processing, and usage time window expands Treated obtains resource for exhibition, obtains the RRC connection reconfigurations that the terminal retransmits and sets and completes message.

4. a kind of intensifier of nonrandom access switching, is applied to base station, which is characterized in that including：

Measurement module is used in nonrandom access handoff procedure, if successfully getting the radio resource control RRC of terminal transmission Connection reconfiguration, which is set, completes message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete the transmission letter of message Number, time of measuring lead TA adjusted values；

5. a kind of base station, which is characterized in that including：

First processor is used in nonrandom access handoff procedure, if successfully getting the wireless heterogeneous networks of terminal transmission RRC connection reconfigurations, which are set, completes message, then according to it is getting, be used for transmission the RRC connection reconfigurations and set and complete the transmission of message Signal, time of measuring lead TA adjusted values；

6. a kind of Enhancement Method of nonrandom access switching, is applied to terminal, which is characterized in that including：

Base station is obtained after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA adjusted values of transmission, the TA adjusted values It completes the transmission signal measurement of message for the base station and obtains according to being used for transmission the RRC connection reconfigurations and set.

7. it is according to claim 6 it is nonrandom access switching Enhancement Method, which is characterized in that the acquisition base station at After the step of work(obtains after the RRC connection reconfigurations set and complete message, the TA adjusted values of transmission, the Enhancement Method is also wrapped It includes：

8. the Enhancement Method of nonrandom access switching according to claim 6, which is characterized in that described in nonrandom access In handoff procedure, after sending the step of radio resource control RRC connection reconfiguration completes message to base station, the Enhancement Method Further include：

If the RRC connection reconfigurations that are used to indicate for getting base station return set the feedback message for completing message acquisition failure, and The RRC connection reconfigurations set the not up to default maximum retransmission of the number of transmissions for completing message, then use extended cyclic prefix The CP retransmissions RRC connection reconfigurations, which are set, completes message.

9. a kind of intensifier of nonrandom access switching, is applied to terminal, which is characterized in that including：

Second sending module, in nonrandom access handoff procedure, radio resource control RRC connection reconfiguration to be sent to base station It sets and completes message；

Acquisition module, for obtaining base station after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA of transmission is adjusted Value, the TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set completion message transmission signal measurement It obtains.

10. a kind of terminal, which is characterized in that including：

Second transmitter, in nonrandom access handoff procedure, radio resource control RRC connection reconfiguration to be sent to base station Complete message；

Receiver, for obtaining base station after successfully obtaining the RRC connection reconfigurations and setting completion message, the TA adjusted values of transmission, The TA adjusted values be the base station according to be used for transmission the RRC connection reconfigurations set completion message transmission signal measurement obtain 's.