CN103326757A - Uplink closed loop sending diversity ground interface configuration maintaining method and system - Google Patents
Uplink closed loop sending diversity ground interface configuration maintaining method and system Download PDFInfo
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Abstract
The invention discloses an uplink closed loop sending diversity ground interface configuration maintaining method. After a network controller sends diversity configuration to an uplink closed loop on a base station, a service link migrates, and the network controller indicates the base station to maintain uplink closed loop sending diversity configuration and the current activated state of uplink closed loop sending diversity after the service link migrates. The base station can obtain and maintain uplink closed loop sending diversity configuration during a reassortment process, and accordingly the fact that an uplink closed loop sending diversity function is achieved is guaranteed, and the performance of the system is improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of uplink closed loop and send the method and system that the configuration of diversity terrestrial interface keeps.
Background technology
Multi-antenna technology is by realizing that with many antennas higher power system capacity, wider residential quarter cover and better quality of service at transmitting terminal and/or receiving terminal.Many antennas of transmitting terminal (or receiving terminal) both can be used for realize sending or receive diversity, also can be used for the implementation space multiplexing.Send diversity technique and be a kind of anti-fading technology that sends the wireless communication field of at least 2 signals that contain identical information at transmitting terminal.The signal of these carrying identical information derives from least 2 separate signal sources.
Send diversity technique according to the structure of its sample value that transmits and statistical property with and shared Radio Resource different, can be divided into space, frequency, large fundamental type of times three, also can be mutually combining of this three types.So-called space diversity refers to utilize the difference of position, different launch sites (space), and the irrelevance when signal reaches receiving terminal behind the experience channel on statistical property realizes the anti fading function.So-called frequency diversity refer to utilize be positioned at different frequency range signal after fading channel in statistical uncorrelated characteristic, i.e. difference on the different frequency range fading statistical characteristics realizes the function of anti-fading (frequency selectivity).Information to be sent can be modulated at respectively on the incoherent carrier wave of frequency during realization and launch.So-called time diversity refers to utilize a randomly fading signal, when time interval of sampling point is enough large (greater than transmission channel coherence time), decline between sampling point is incoherent mutually in statistics, namely utilizes the difference on the time fading rise statistical property to realize anti-time selective fading.
Whether send diversity technique needs to be divided into open loop transmit diversity pattern and closed-loop diversity transmitting mode to the parameter of transmitting terminal feedback diversity needs according to receiving terminal.Under the open loop transmit diversity pattern, receiving terminal is not to any extra information relevant with emission of transmitting terminal feedback, and transmitting terminal can use corresponding coding techniques (for example simple Space-Time coding) to finish the transmission diversity voluntarily.Under the closed-loop diversity transmitting mode, receiving terminal need to use feedback channel to feed back to parameter relevant with sending diversity of transmitting terminal and (for example send the required precoding vector of diversity, by the indication of precoding indication information), transmitting terminal uses this feedback information to finish the transmission diversity after reception.
In 3GPP Release 10, HSUPA (High Speed Uplink Packet Access, the High Speed Uplink Packet access) the up open loop transmit diversity of system subscriber terminal has been finished the formulation (TR25.863) of standard, the related content of closed-loop diversity transmitting is being discussed at present, introducing is transmitted precoding indication (Transmitted Pre-coding Indication is called for short TPI).
Current industry is reached common understanding at the channel architecture that uplink closed loop sends diversity, as shown in Figure 1, increase a up channel, be auxiliary Dedicated Physical Control Channel S-DPCCH, upload auxiliary pilot value to network side, the weak situation that network side can utilize the auxiliary pilot value that receives and the pilot value in the special used for physical control channel DPCCH to recognize channel path is used for estimation TPI value; Newly increase a down channel, be similar to fractional dedicated physical channel F-DPCH, i.e. mark precoding indicating channel F-PCICH is used for transmitting the code value that prelists of up transmit diversity to terminal.TPI indication renewal rate is 3 time slots.Receive 512 spreading rates behind the TPI, terminal is used the precoding weighting of TPI indicating at first DPCCH boundary of time slot.For the TPI that receives, terminal will be measured its reliability, if terminal is formerly estimated from the TPI territory on the F-PCICH on the service link in 3 or 240 time slots, have at least a TPI to meet code and can satisfy certain measurement threshold value Qtpi, wherein Qtpi is determined by dependence test, 3 time slots or 240 time slots are determined by high level, terminal is just utilized the TPI order that receives, use the code value that prelists in this TPI territory to carry out wave beam forming (beamforming) computing, finish uplink closed loop and send diversity.
In sum, there is following technical problem in the prior art: increased at present uplink closed loop in the 3GPP agreement and sent the support that the diversity terrestrial interface configures, but for the scene of service link migration, whether the configuration that uplink closed loop sends diversity keeps not carrying out clearly.
Summary of the invention
The technical problem that the present invention solves provides a kind of uplink closed loop and sends the method and system that the configuration of diversity terrestrial interface keeps, so that the configuration that keeps uplink closed loop to send diversity can be known in the reprovision process in the base station, thereby guarantee to finish the performance that uplink closed loop sends diversity feature and improves system.
For solving the problems of the technologies described above, the invention provides a kind of uplink closed loop and send the method that the configuration of diversity terrestrial interface keeps,
After network controller is finished the uplink closed loop of base station is sent the diversity configuration, when migration occured service link, described network controller indication base station kept uplink closed loop to send the diversity configuration after the service link migration and keeps uplink closed loop to send the current state of activation of diversity.
Further, when migration occured service link, the service network controller sent wireless link reallocation message to the base station, and comprised uplink closed loop transmission diversity continuation maintenance indication in described wireless link reallocation message;
Described base station receive described comprise uplink closed loop and send diversity and continue to keep the wireless link reallocation message of indication after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Further, when migration occured service link, the service network controller sent wireless link reallocation message to the base station, and did not comprise uplink closed loop send diversity and reshuffle (UL CLTD Information Reconf) cell in wireless link reallocation message;
After described base station receives the described wireless link reallocation message that does not comprise UL CLTD Information Reconf cell, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Further, when migration occured service link, the service network controller sent wireless link reallocation message to the drift network controller of described base station, comprised uplink closed loop transmission diversity in the described wireless link reallocation message and continued to keep indication;
Described drift network controller passes to described base station with the wireless link reallocation message of receiving; Described base station receive described comprise uplink closed loop and send diversity and continue to keep the wireless link reallocation message of indication after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Further, when migration occured service link, the service network controller sent wireless link reallocation message to the drift network controller of described base station, and does not comprise UL CLTD Information Reconf cell in described wireless link reallocation message;
Described drift network controller passes to described base station with the wireless link reallocation message of receiving; After described base station receives the described wireless link reallocation message that does not comprise UL CLTD Information Reconf cell, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Further, described uplink closed loop sends the current state of activation of diversity, comprising: activate or un-activation.
Further, described base station keeps uplink closed loop to send the configuration of diversity terrestrial interface after the service link migration;
Wherein, described terrestrial interface comprise the Iub mouth and or the Iur mouth.
The present invention also provides a kind of uplink closed loop to send the system that the configuration of diversity terrestrial interface keeps, and described system comprises that configuration indicating module and the configuration in the base station in the network controller keeps module,
Described configuration indicating module is used for, the uplink closed loop of finishing the base station sends the diversity configuration, and when migration occured service link, the indication base station kept uplink closed loop to send the diversity configuration after the service link migration and keeps uplink closed loop to send the current state of activation of diversity;
Described configuration keeps module to be used for, and according to the indication of the network controller that receives, keeps uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity after the service link migration.
Further, described configuration indicating module is used for, when migration occurs in service link, send wireless link reallocation message to the base station, and by in described wireless link reallocation message, comprising the continuation maintenance indication of uplink closed loop transmission diversity or not comprising UL CLTD Information Reconf cell, indicate described base station in the transmission diversity configuration of the rear maintenance of service link migration uplink closed loop and keep the current state of activation of uplink closed loop transmission diversity;
Described configuration keeps module to be used for, receive comprise uplink closed loop and send diversity and continue to keep indication or do not comprise the wireless link reallocation message of UL CLTD Information Reconf cell after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Further, described configuration indicating module is used for, drift network controller to described base station sends wireless link reallocation message, and by in described wireless link reallocation message, comprising the continuation maintenance indication of uplink closed loop transmission diversity or not comprising UL CLTD Information Reconf cell, indicate described base station in the transmission diversity configuration of the rear maintenance of service link migration uplink closed loop and keep the current state of activation of uplink closed loop transmission diversity;
Described configuration keeps module to be used for, receive comprise uplink closed loop and send diversity and continue to keep indication or do not comprise the wireless link reallocation message of UL CLTD Information Reconf cell after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Compared with prior art, the present invention has the following advantages at least:
The present invention can solve network controller finish the uplink closed loop of base station sent the diversity configuration after, because when the reprovision process has been initiated in the service link migration, the configuration and the state of activation that continue to keep uplink closed loop to send diversity configure the method that keeps, thereby improve network controller sends diversity to the uplink closed loop of base station configuration, guarantee that uplink closed loop sends the realization of diversity feature.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the channel architecture schematic diagram that uplink closed loop sends diversity;
Fig. 2 is that the uplink closed loop of the embodiment of the invention one sends the schematic flow sheet that the configuration of diversity terrestrial interface keeps;
The uplink closed loop of Fig. 3 embodiment of the invention two sends the schematic flow sheet that the configuration of diversity terrestrial interface keeps.
Embodiment
Present embodiment proposes a kind of uplink closed loop and sends the method that the configuration of diversity terrestrial interface keeps, and adopts following scheme:
After network controller is finished the uplink closed loop of base station is sent the diversity configuration, when migration occured service link, described network controller indication base station kept uplink closed loop to send the diversity configuration after the service link migration and keeps uplink closed loop to send the current state of activation of diversity.
Further, described uplink closed loop sends the diversity configuration and comprises that uplink closed loop sends the configuration of diversity terrestrial interface, and described terrestrial interface refers to Iub mouth and or Iur mouth.
Wherein, keep uplink closed loop to send the current state of activation of diversity, refer to:
If before the service link migration occured, uplink closed loop sent diversity and activates, then after the service link migration, keep state of activation;
If before the service link migration occured, uplink closed loop sent also un-activation of diversity, then after the service link migration, keep unactivated state.
Further, when having initiated the reprovision process owing to the service link migration, network controller sends diversity continuation maintenance indication by carry uplink closed loop in wireless link reallocation message, and indication NodeB keeps uplink closed loop to send the configuration of diversity and current state of activation in the rear continuation of service link migration;
When NodeB receives the wireless link reallocation message that comprises described uplink closed loop transmission diversity continuation maintenance indication, continue the configuration of maintenance uplink closed loop transmission diversity and current state of activation.
Further, when having initiated the reprovision process owing to the service link migration, network controller is not by carrying UL CLTD Information Reconf (Uplink Closed Loop Transmit Diversity in wireless link reallocation message, uplink closed loop sends diversity and reshuffles) cell, indication NodeB continuation after the service link migration keeps uplink closed loop to send the configuration of diversity and current state of activation;
When NodeB receives the wireless link reallocation message that does not comprise UL CLTD Information Reconf cell, continue to keep the configuration of uplink closed loop transmission diversity and current state of activation.
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove, in the situation that do not conflict, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Embodiment one
In the present embodiment, during the service link migration, SRNC (Serving Radio Network Controller, service wireless network controller) give Node B or DRNC (Drift Radio Network Controller, floating radio network controller) the indication uplink closed loop sends the diversity continuation, and by carrying indication information element, keep uplink closed loop to send the configuration of diversity and current state of activation with indication.
As shown in Figure 2, the present embodiment flow process specifically describes as follows:
Step 101, SRNC (Serving RNC) finishes configuration and the activation that the uplink closed loop of base station is sent diversity.
Step 102, SRNC initiates the reprovision process to Node B or DRNC, carries out the service link migration.
Wherein, stride the UE that RNC moves for one, when UE moved to another RNC control residential quarter from the residential quarter of initial access, if do not carry out reorientation, then the RNC at the place, cell-of-origin of initial access was called SRNC, and the RNC at new place, residential quarter is called DRNC.
For simplicity, show simultaneously two kinds of possible in practical application situations among Fig. 2, namely SRNC directly sends to wireless link reallocation message the situation of Node B, and SRNC sends to DRNC with wireless link reallocation message, is passed to the situation of Node B by DRNC.
Wherein, the terrestrial interface signaling is used wireless link reallocation message, fills in the relevant cell of service link migration in the message, and newly-increased cell: uplink closed loop sends diversity and continues indication.
Step 103 after Node B receives message, is carried out the processing of service link migration, and keeps uplink closed loop to send the configuration of diversity and current state of activation.
Step 104, DRNC transmits uplink closed loop and sends the Node B that diversity continues to be indicated to the D side.
Step 105 after the Node B of D side receives message, is carried out the processing of service link migration, and keeps uplink closed loop to send the configuration of diversity and current state of activation.
Embodiment two
In the present embodiment, service link when migration, network controller to Node B or DRNC indication uplink closed loop send diversity and continue, do not carry the continuation indication information element, the implicit expression indication keeps uplink closed loop to send configuration and the state of activation of diversity.
As shown in Figure 3, the present embodiment flow process specifically describes as follows:
Step 201, RNC finishes configuration and the activation that the uplink closed loop of base station is sent diversity.
Step 202, RNC to Node B or DRNC initiate the reprovision process and carry out the service link migration.
Wherein, the terrestrial interface signaling is used wireless link reallocation message, comprises the relevant cell of service link migration in the message, and does not carry UL CLTD Information Reconf cell.
Step 203 after Node B receives message, is carried out the processing of service link migration, and keeps uplink closed loop to send configuration and the state of activation of diversity.
Step 204, DRNC transmits and does not carry the wireless link reconfigured request message of UL CLTD Information Reconf cell to the Node B of D side.
Step 205 after the Node B of D side receives message, is carried out the processing of service link migration, and keeps uplink closed loop to send configuration and the state of activation of diversity.
In addition, also provide a kind of uplink closed loop to send the system that the configuration of diversity terrestrial interface keeps in the embodiment of the invention, described system comprises that configuration indicating module and the configuration in the base station in the network controller keeps module,
Described configuration indicating module is used for, the uplink closed loop of finishing the base station sends the diversity configuration, and when migration occured service link, the indication base station kept uplink closed loop to send the diversity configuration after the service link migration and keeps uplink closed loop to send the current state of activation of diversity;
Described configuration keeps module to be used for, and according to the indication of the network controller that receives, keeps uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity after the service link migration.
Further, described configuration indicating module is used for, when migration occurs in service link, send wireless link reallocation message to the base station, and by in described wireless link reallocation message, comprising the continuation maintenance indication of uplink closed loop transmission diversity or not comprising UL CLTD Information Reconf cell, indicate described base station in the transmission diversity configuration of the rear maintenance of service link migration uplink closed loop and keep the current state of activation of uplink closed loop transmission diversity;
Described configuration keeps module to be used for, receive comprise uplink closed loop and send diversity and continue to keep indication or do not comprise the wireless link reallocation message of UL CLTD Information Reconf cell after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
Further, described configuration indicating module is used for, drift network controller to described base station sends wireless link reallocation message, and by in described wireless link reallocation message, comprising the continuation maintenance indication of uplink closed loop transmission diversity or not comprising UL CLTD Information Reconf cell, indicate described base station in the transmission diversity configuration of the rear maintenance of service link migration uplink closed loop and keep the current state of activation of uplink closed loop transmission diversity;
Described configuration keeps module to be used for, receive comprise uplink closed loop and send diversity and continue to keep indication or do not comprise the wireless link reallocation message of UL CLTD Information Reconf cell after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
It below only is preferred case study on implementation of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Claims (10)
1. a uplink closed loop sends the method that the configuration of diversity terrestrial interface keeps, it is characterized in that,
After network controller is finished the uplink closed loop of base station is sent the diversity configuration, when migration occured service link, described network controller indication base station kept uplink closed loop to send the diversity configuration after the service link migration and keeps uplink closed loop to send the current state of activation of diversity.
2. the method for claim 1 is characterized in that,
When migration occured service link, the service network controller sent wireless link reallocation message to the base station, and comprised uplink closed loop transmission diversity continuation maintenance indication in described wireless link reallocation message;
Described base station receive described comprise uplink closed loop and send diversity and continue to keep the wireless link reallocation message of indication after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
3. the method for claim 1 is characterized in that,
When migration occured service link, the service network controller sent wireless link reallocation message to the base station, and did not comprise uplink closed loop send diversity and reshuffle (UL CLTD Information Reconf) cell in wireless link reallocation message;
After described base station receives the described wireless link reallocation message that does not comprise UL CLTD Information Reconf cell, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
4. the method for claim 1 is characterized in that,
When migration occured service link, the service network controller sent wireless link reallocation message to the drift network controller of described base station, comprised uplink closed loop transmission diversity in the described wireless link reallocation message and continued to keep indication;
Described drift network controller passes to described base station with the wireless link reallocation message of receiving; Described base station receive described comprise uplink closed loop and send diversity and continue to keep the wireless link reallocation message of indication after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
5. the method for claim 1 is characterized in that,
When migration occured service link, the service network controller sent wireless link reallocation message to the drift network controller of described base station, and does not comprise UL CLTD Information Reconf cell in described wireless link reallocation message;
Described drift network controller passes to described base station with the wireless link reallocation message of receiving; After described base station receives the described wireless link reallocation message that does not comprise UL CLTD Information Reconf cell, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
6. such as each described method of claim 1 to 5, it is characterized in that,
Described uplink closed loop sends the current state of activation of diversity, comprising: activate or un-activation.
7. such as each described method of claim 1 to 5, it is characterized in that,
Described base station keeps uplink closed loop to send the configuration of diversity terrestrial interface after the service link migration;
Wherein, described terrestrial interface comprise the Iub mouth and or the Iur mouth.
8. a uplink closed loop sends the system that the configuration of diversity terrestrial interface keeps, and it is characterized in that, described system comprises that configuration indicating module and the configuration in the base station in the network controller keeps module,
Described configuration indicating module is used for, the uplink closed loop of finishing the base station sends the diversity configuration, and when migration occured service link, the indication base station kept uplink closed loop to send the diversity configuration after the service link migration and keeps uplink closed loop to send the current state of activation of diversity;
Described configuration keeps module to be used for, and according to the indication of the network controller that receives, keeps uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity after the service link migration.
9. system as claimed in claim 8 is characterized in that,
Described configuration indicating module is used for, when migration occurs in service link, send wireless link reallocation message to the base station, and by in described wireless link reallocation message, comprising the continuation maintenance indication of uplink closed loop transmission diversity or not comprising UL CLTD Information Reconf cell, indicate described base station in the transmission diversity configuration of the rear maintenance of service link migration uplink closed loop and keep the current state of activation of uplink closed loop transmission diversity;
Described configuration keeps module to be used for, receive comprise uplink closed loop and send diversity and continue to keep indication or do not comprise the wireless link reallocation message of UL CLTD Information Reconf cell after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
10. system as claimed in claim 8 is characterized in that,
Described configuration indicating module is used for, drift network controller to described base station sends wireless link reallocation message, and by in described wireless link reallocation message, comprising the continuation maintenance indication of uplink closed loop transmission diversity or not comprising UL CLTD Information Reconf cell, indicate described base station in the transmission diversity configuration of the rear maintenance of service link migration uplink closed loop and keep the current state of activation of uplink closed loop transmission diversity;
Described configuration keeps module to be used for, receive comprise uplink closed loop and send diversity and continue to keep indication or do not comprise the wireless link reallocation message of UL CLTD Information Reconf cell after, the migration of completion service link, and after the service link migration, keep uplink closed loop transmission diversity configuration and keep uplink closed loop to send the current state of activation of diversity.
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