CN102075479B - Method and system for realizing space division multiplexing of multi-carrier-wave high speed downlink packet access - Google Patents
Method and system for realizing space division multiplexing of multi-carrier-wave high speed downlink packet access Download PDFInfo
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Abstract
The invention discloses a method and system for realizing space division multiplexing of multi-carrier-wave high speed downlink packet access, which are used for solving the problem of lower throughput of a network system in the prior art. The method comprises the following steps of: when the set detection time arrives and the space division characteristic between a target user terminal and other user terminals is detected to change, determining a plurality of second user terminals on the same channel and carrier wave with the target user terminal, and regulating the target user terminal and the second user terminals to different carrier waves on the same channel; determining a plurality of third user terminals being on different channels and different carrier waves and having an isolation exceeding an isolation threshold with the target user terminal, determining each third user terminal as a user terminal for space division multiplexing by the target user terminal, and transmitting the data of the target user terminal and each third user terminal by adopting a same code resource. By adopting the technical scheme of the invention, the throughput of the system is increased.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of method and system that realize multi carrier wave high-speed downlink grouping access space division multiplexing.
Background technology
At present, continuous increase along with the data user, demand for high-speed data service is day by day strong, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA) throughput of system and spectrum efficiency might become the bottleneck of restriction data service depth development, and the throughput that how to improve the TD-SCDMA system becomes at present comparatively problems of concern.
Throughput and the spectrum efficiency of TD-SCDMA system are subject to code channel, and the utilization ratio that improves code channel is to promote the throughput of TD-SCDMA system and the key of spectrum efficiency; Therefore, at present mainly improve throughput of system by introduce HSDPA (High Speed Downlink Packet Access, high speed downlink packet access technology) in the TD-SCDMA system.HSDPA space division multiplexing technology utilizes the different user space segmentation to become different passages, the user of space isolation uses identical physical resource, to realize the multiplexing of physical resource, introduce HSDPA space division multiplexing technology and can realize channelized frequencies, time slot and code channel resource in the TD-SCDMA system, improve throughput of system.
at present, along with developing rapidly of data service, introduce multi-carrier HSDPA space division multiplexing technology in the TD-SCDMA system, become the trend of development, in prior art, the major way of realizing the empty minute technology of multi-carrier HSDPA is: under indoor coverage situation, utilize indoor floor, body of wall consists of the natural isolation between the user, use HSDPA space division multiplexing algorithm and the indoor soverlay technique of multichannel, according to the power level value of user on different passages, calculate the isolation between the user, select isolation enough large user carry out wireless time slot, code channel resource multiplexing, each passage comprises a plurality of carrier waves, after being in the fixing HSDPA carrier wave of each user assignment in this passage, to be in different passages, isolation surpasses between the user of threshold value thresholding and carries out the multiplexing of wireless time slot, code channel resource, to improve the throughput of TD-SCDMA system.
At present, the mode of existing HSDPA space division multiplexing, although can improve to a certain extent the throughput of TD-SCDMA system, but due to for select user configured be the HSDPA carrier wave of fixing, therefore, when each user causes its empty minute characteristic (passage as residing in this user, with other users' isolation) change due to mobile, might cause the multi-carrier HSDPA space division multiplexing not carry out, thereby have the lower problem of throughput of TD-SCDMA system.
Summary of the invention
The embodiment of the present invention provides a kind of method and system that realize multi carrier wave high-speed downlink grouping access space division multiplexing, to solve the not high problem of throughput of system in prior art.
A kind of method that realizes multi carrier wave high-speed downlink grouping access space division multiplexing comprises the following steps:
When arrived in the detection time of setting for target terminal user, whether the sky minute feature that detects between described target terminal user and other user terminals changed;
When changing, determine each second user terminal that is in same channels with described target terminal user and is in same carrier wave, described target terminal user and each the second user terminal are adjusted on the different carrier of residing same passage;
Determine from described target terminal user be in different passages, be in same carrier wave and and described target terminal user between each the 3rd user terminal of isolation threshold value that surpass to set of isolation, and each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, and adopt the data of the described target terminal user of same code resource transmission and each the 3rd user terminal.
A kind of system that realizes multi carrier wave high-speed downlink grouping access space division multiplexing comprises base station and radio network controller, wherein:
The base station is used for when arrive in the detection time of setting for target terminal user, and whether the sky minute feature that detects between described target terminal user and other user terminals changes; When changing, the sky minute characteristic between described target terminal user and other user terminals is sent to described radio network controller;
Radio network controller, be used for dividing characteristic according to the sky between described target terminal user and other user terminals, determine each second user terminal that is in same channels with described target terminal user and is in same carrier wave, described target terminal user and each the second user terminal are adjusted on the different carrier of residing same passage; Determine from described target terminal user be in different passages, be in same carrier wave and and described target terminal user between each the 3rd user terminal of isolation threshold value that surpass to set of isolation, and each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, and adopt the data of the described target terminal user of same code resource transmission and each the 3rd user terminal.
In the embodiment of the present invention, when arrive in the detection time of setting for target terminal user, whether the sky minute feature that detects between this target terminal user and other user terminals changes, when determining to change, determine each second user terminal that is in same passage, same carrier wave with this target terminal user, and this target terminal user is adjusted on the different carrier that is in identical passage with each second user terminal, thereby reduced the interference between user terminal, improved cell throughout; Determine again from this target terminal user be in different passages, same carrier wave and and this user terminal between isolation greater than each the 3rd user terminal of the isolation threshold value of setting, and each the 3rd user terminal is defined as the user terminal that described target terminal user is carried out space division multiplexing, and adopt the identical described target terminal user of code resource transmission and the data of described the 3rd user terminal, thereby saved the code resource, improved throughput of system.
Description of drawings
Fig. 1 realizes the method flow diagram of multi-carrier HSDPA space division multiplexing in indoor distributed system in the embodiment of the present invention;
Fig. 2 is the embodiment of the present invention when realizing the multi-carrier HSDPA space division multiplexing in indoor distributed system, the structural representation after the user moves;
Fig. 3 A, 3B, 3C realize the schematic diagram of multi-carrier HSDPA space division multiplexing in an instantiation of enumerating in the embodiment of the present invention;
Fig. 4 is the system configuration schematic diagram of realizing the multi-carrier HSDPA space division multiplexing in the embodiment of the present invention in indoor distributed system.
Embodiment
For the problems referred to above that prior art exists, the embodiment of the present invention provides a kind of and realizes that the method for multi carrier wave high-speed downlink grouping access space division multiplexing is to improve the throughput of TD-SCDMA system.The main thought of the method is: when a plurality of (can comprise two) user terminal (follow-up represent with UE) is in different passages, same carrier wave and isolation between any two greater than the isolation threshold value set, determine to satisfy the space division multiplexing condition between these a plurality of UE, adopt identical code resource to carry out transfer of data to these a plurality of UE, thereby improve cell throughout; When causing the sky minute characteristic of UE, the movement due to UE changes, thereby cause originally satisfying when not satisfying the space division multiplexing condition between the UE of space division multiplexing condition, for being in different passages, same carrier wave and isolation greater than adopt same code resource transmission data between the UE of setting threshold as far as possible, for a plurality of UE that are in same channels, same carrier wave, these a plurality of UE are adjusted on different carrier waves, reducing the interference between these a plurality of UE, thereby improve cell throughout.
Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
Referring to Fig. 1, for realize the method flow diagram of multi-carrier HSDPA space division multiplexing in the embodiment of the present invention in indoor distributed system, base station (the follow-up NodeB of being called) obtains the configuration information of HSPDA, and when being multicarrier according to this HSPDA configuration information judgement HSPDA carrier number, for each UE (this UE is object UE), start this flow process, this flow process comprises the following steps:
In this step, empty minute characteristic comprises the isolation between the current residing passage of object UE, this object UE and other UE etc.Whether the sky minute characteristic of determining object UE changes, be specially: when the isolation between this object UE and other UE changes if the current residing passage of object UE changes, a sky minute characteristic of determining this object UE changes, otherwise determines that the sky minute characteristic of this object UE does not change.
In this step, the isolation threshold value can rule of thumb be worth setting, generally, is 20dB with the isolation threshold value setting.
in the step 101 of above-mentioned flow process, NodeB judges whether the sky minute characteristic between object UE and other user terminal changes, specific implementation is: NodeB detects the power that each passage receives the upward signal of this object UE transmission, and relatively each passage receives the upward signal performance number that this object UE sends, to receive the prominent passage of upward signal and be defined as the current residing passage of this object UE, the current residing passage of object UE and the residing passage of last detection time of this object UE are compared, if not identical definite current residing passage of object UE changes, if identical definite residing passage of object UE does not change.
in this step, determine whether the isolation between object UE and other UE changes, specific implementation is: due to TDD (Time Division Duplexing, time division duplex) reciprocity of the channel of duplex mode and TD-SDMA (Time Division-Space Division Multiple Access, time-division space division multiplexing access) short characteristic of duplexing time, when each passage sends downstream signal with identical transmitted power to the UE that serves separately, can receive the performance number that object UE sends upward signal according to each passage, can obtain the interference power that object UE receives each passage.Describe with an instantiation, as shown in Figure 2, object UE 1 is in passage 2, disturbs UE2 to be in passage 4, and the HSDPA carrier wave of UE1 and UE2 is all first carrier; The upward signal power that passage 2, passage 4 receive the UE1 transmission is respectively || h
21||
2, || h
41||
2When passage 2 sent downstream signal with identical transmitting power to each self-corresponding service UE with passage 4, the available signal power that UE1 receives from passage 2 was P
UE1, the interference power that UE1 receives from passage 4 is P
UE2(this interference power is UE2 to the interference power of UE1), wherein || h
21||
2/ || h
41||
2=P
UE1/ P
UE2P wherein
UE1/ O
UE2Be isolation between object UE 1 and user UE2 (namely || h
21||
2/ || h
41||
2Be the isolation between UE1 and UE2).
In conjunction with Fig. 3 A, 3B and Fig. 3 C to whether being described in detail carrying out the carrier wave adjustment between UE in the step 102 of above-mentioned flow process: as shown in Figure 3A, object UE 1 is in passage 1, disturb UE2 to be in passage 2, and this UE1 and UE2 satisfy the space division multiplexing condition, UE1 and UE2 adopt same code resource transmission data, and UE3 is in passage 3, and UE4 is in passage 4, UE3 and UE4 satisfy the space division multiplexing condition, and UE3 and UE4 adopt same code resource transmission data; When after after a while, as shown in Fig. 3 B, UE1 moves to passage 2, UE3 moves to passage 4, at this moment, NodeB judges between UE1 and UE2 and change has occured the sky minute characteristic between UE3 and UE4, and the sky minute characteristic after changing between above-mentioned each UE is sent to RNC; RNC residing passage current according to each UE, HSDPA carrier wave to UE1 and UE2 is adjusted, HSDPA carrier wave to UE3 and UE4 is adjusted, as shown in Figure 3 C, the HSDPA carrier wave of UE2 is adjusted into the second carrier wave, the HSDPA carrier wave of UE3 is adjusted into first carrier, to reduce current the be in UE1 of same passage and the interference between the interference between UE2 and UE3 and UE4, to improve throughput of system.
In above-mentioned process step 103, all are in different passages, are in the UE that a plurality of UE that identical HSDPA carrier wave and isolation between any two surpass the isolation threshold value of setting are defined as satisfying the space division multiplexing condition, and adopt same code resource to carry out transfer of data to these a plurality of UE, to improve cell throughout.Be elaborated in conjunction with Fig. 3 A, 3B, 3C, in Fig. 3 A, UE1 and UE2 satisfy the space division multiplexing condition, and UE3 and UE4 satisfy the space division multiplexing condition; When after after a while, due to the movement of UE, as shown in Fig. 3 B, UE1 and UE2 no longer satisfy the space division multiplexing condition, and UE3 and UE4 no longer satisfy the space division multiplexing condition, and the RNC judgement need to be carried out the frequency adjustment to UE and adjust with empty minute; After adjusting with empty minute through the frequency division adjustment, as shown in Figure 3 C, UE1 and UE3 satisfy the space division multiplexing condition can adopt same code resource transmission data, and UE2 and UE4 satisfy the space division multiplexing condition can adopt same code resource transmission data.
preferably, constantly carry out the carrier wave adjustment for fear of UE due to the variation of sky minute characteristic and cause the problem that physical resource consumption is large and the concussion shake occurs between different carrier, in the embodiment of the present invention, in the step 102 of above-mentioned flow process, before on different carrier in object UE is adjusted to this passage with each UE that determines, for each UE that determines, also comprise: the frequency values that the UE that determines is current and frequency division filtering factor α multiply each other and obtain the first value, the frequency values that object UE is current multiplies each other with (1-α) and obtains the second value, the first value and the second value addition are obtained the 3rd value, if the 3rd value is less than the frequency threshold of setting, object UE is adjusted on the different carrier of current passage of living in the UE that determines, if the 3rd value more than or equal to this frequency threshold, does not need object UE is adjusted on the different carrier of current passage of living in the UE that determines, the span of α is [0,1].
In the step 103 of above-mentioned flow process, determine the current a plurality of UE that are in different passages from object UE, are in same carrier wave; For each UE in a plurality of UE that determine, also comprise: determine the isolation between current this UE and object UE, this isolation is multiplied each other with an empty minute filtering factor β obtains the first value, and the isolation between last detection time this UE and object UE and (1-β) are multiplied each other obtains the second value; The first value and the second value addition are obtained the 3rd value; If the 3rd value is defined as this UE to satisfy with this object UE the UE of space division multiplexing condition more than or equal to the isolation threshold value, the span of β is [0,1].
Preferably, for better improving the reasonability of allocation of carriers, when NodeB changes at the passage of determining UE at every turn, determine the carrier number of each passage, and report RNC, so that when RNC need to carry out the frequency adjustment at judgement UE, more rational more balanced distribution/adjustment HSDPA carrier wave is to improve systematic function.
Based on the identical design of said method flow process, the embodiment of the present invention also provides a kind of system that realizes the multi-carrier HSDPA space division multiplexing, and the structure of this system as shown in Figure 4.
Referring to Fig. 4, the structural representation of a kind of HSDPA of realization SDM system of providing in the embodiment of the present invention is provided, this system comprises the radio network controller 42 of base station 41 and this base station ownership, wherein:
Detection module 411 is used for detecting no the changing of sky minute feature between target terminal user and other user terminals when arrive in the detection time of setting for target terminal user; When changing, the sky minute characteristic between target terminal user and other user terminals is sent to transceiver module 412.
The first determination module 422, be used for dividing characteristic according to the sky between target terminal user and other user terminals, determine each second user terminal that is in same channels with described target terminal user and is in same carrier wave, adjust instruction to transceiver module 421 transmission frequency, target terminal user and each the second user terminal are adjusted on the different carrier of residing same passage.
The second determination module 423, be used for determining from described target terminal user be in different passages, be in same carrier wave and and described target terminal user between isolation surpass each the 3rd user terminal of the isolation threshold value of setting, and each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, and the data of the employing described target terminal user of same code resource transmission and each the 3rd user terminal, and send empty divided data to transceiver module 421.
Technical solution of the present invention is applied to but is not limited in the TD-SCDMA system, can also use in the network system with other, as LTE (Long Term Evolution, Long Term Evolution) system.
Technical solution of the present invention is applied to but is not limited in indoor distributed system, also can use for outdoor compartment system.
In the embodiment of the present invention, the base station is detected the upward signal power that UE that each passage receives sends in real time, and whether the sky minute characteristic of determining between this UE and other UE according to the performance number of each passage changes, if change, this UE and other UE are carried out frequency adjustment/and adjusted in empty minute, make and adopt same code resource to carry out transfer of data between the UE that satisfies the space division multiplexing condition as far as possible, to improve cell throughout; Between the UE that does not satisfy the space division multiplexing condition, its HSDPA carrier wave configuration is adjusted, to reduce the interference between UE, further improve cell throughout; In addition, when UE being carried out the frequency adjustment with adjustment in empty minute, consider respectively frequency division filtering factor and empty minute filtering factor, thus the problem of having avoided concussion to shake.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1. a method that realizes multi carrier wave high-speed downlink grouping access space division multiplexing, is characterized in that, comprises the following steps:
When arrived in the detection time of setting for target terminal user, whether the sky minute feature that detects between described target terminal user and other user terminals changed;
When changing, determine each second user terminal that is in same channels with described target terminal user and is in same carrier wave, described target terminal user and each the second user terminal are adjusted on the different carrier of residing same passage;
Determine from described target terminal user be in different passages, be in same carrier wave and and described target terminal user between each the 3rd user terminal of isolation threshold value that surpass to set of isolation, and each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, and adopt the data of the described target terminal user of same code resource transmission and each the 3rd user terminal;
Wherein, each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, is specially:
For each the 3rd user terminal, the isolation between described target terminal user and the 3rd user terminal is multiplied each other with an empty minute filtering factor β obtains the first value; Isolation between last detection time described the 3rd user terminal and described target terminal user is multiplied each other with (1-β) obtain the second value; Described the first value and the second value addition are obtained the 3rd value, and the span of described β is [0,1];
When judging described the 3rd value more than or equal to described isolation threshold value, described the 3rd user terminal is defined as the user terminal that described target terminal user is carried out space division multiplexing.
2. the method for claim 1, is characterized in that, whether the sky minute feature between described detection target terminal user and other user terminals changes, and is specially:
Change when determining the current residing passage of target terminal user, or/and when determining isolation between this target terminal user and other user terminals and changing, determine that this target terminal user and the empty dtex between other user terminals are levyd to give birth to change.
3. method as claimed in claim 2, is characterized in that, the described current residing passage of target terminal user of determining changes, and is specially:
Detect the performance number that each passage receives the upward signal of described target terminal user transmission;
The passage that receives the performance number maximum is defined as the current residing passage of described target terminal user;
The current residing passage of comparison object user terminal when last detection time, residing passage was not identical, determines that the residing passage of described target terminal user changes with described target terminal user.
4. method as claimed in claim 2, is characterized in that, the isolation of determining between described target terminal user and other user terminals changes, and is specially:
The performance number that the residing passage of described target terminal user is received the upward signal of this target terminal user transmission is defined as the first performance number;
The performance number that the residing passage of described other user terminals is received the upward signal of described target terminal user transmission is defined as the second performance number;
Determine isolation between described target terminal user and described user terminal according to described the first performance number and described the second performance number;
When the described isolation of determining and isolation between last detection time described target terminal user and described other user terminals are not identical, determine that the isolation between described target terminal user and described other user terminals changes.
5. method as claimed in claim 4, is characterized in that, determines isolation between described target terminal user and described other user terminals according to described the first performance number and described the second performance number, is specially:
The ratio of described the first performance number and described the second performance number is defined as isolation between described target terminal user and described other user terminals.
6. method as described in claim 1～5 any one, is characterized in that, before described target terminal user and each the second user terminal being adjusted on the different carrier of residing same passage, for each the second user terminal, also comprises:
The frequency values of the second user terminal and frequency division filtering factor α are multiplied each other obtain the first value, the frequency values of described target terminal user is multiplied each other with (1-α) obtain the second value, described the first value and the second value addition are obtained the 3rd value, and the span of described α is [0,1];
When judging described the 3rd value less than the frequency threshold set, described target terminal user and described the second user terminal are adjusted on the different carrier of residing same passage.
7. a system that realizes high speed downlink packet access space division multiplexing, is characterized in that, comprises base station and radio network controller, wherein:
The base station is used for when arrive in the detection time of setting for target terminal user, and whether the sky minute feature that detects between described target terminal user and other user terminals changes; When changing, the sky minute characteristic between described target terminal user and other user terminals is sent to described radio network controller;
Radio network controller, be used for dividing characteristic according to the sky between described target terminal user and other user terminals, determine each second user terminal that is in same channels with described target terminal user and is in same carrier wave, described target terminal user and each the second user terminal are adjusted on the different carrier of residing same passage; And, determine from described target terminal user be in different passages, be in same carrier wave and and described target terminal user between each the 3rd user terminal of isolation threshold value that surpass to set of isolation, and each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, and adopt the data of the described target terminal user of same code resource transmission and each the 3rd user terminal;
Wherein, each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, is specially:
For each the 3rd user terminal, the isolation between described target terminal user and the 3rd user terminal is multiplied each other with an empty minute filtering factor β obtains the first value; Isolation between last detection time described the 3rd user terminal and described target terminal user is multiplied each other with (1-β) obtain the second value; Described the first value and the second value addition are obtained the 3rd value, and the span of described β is [0,1];
When judging described the 3rd value more than or equal to described isolation threshold value, described the 3rd user terminal is defined as the user terminal that described target terminal user is carried out space division multiplexing.
8. system as claimed in claim 7, is characterized in that, described base station comprises detection module and transceiver module, wherein:
Detection module is used for detecting no the changing of sky minute feature between target terminal user and other user terminals when arrive in the detection time of setting for target terminal user; When changing, the sky minute characteristic between target terminal user and other user terminals is sent to the transceiver module of described base station;
Transceiver module is used for the sky minute characteristic between described target terminal user and other user terminals is sent to described radio network controller;
Described radio network controller comprises transceiver module, the first determination module, the second determination module, wherein:
Transceiver module is for the target terminal user of the transceiver module transmission that receives described base station and the sky minute characteristic between other user terminals;
The first determination module, be used for target terminal user that the transceiver module according to radio network controller receives and the sky minute characteristic between other user terminals, determine each second user terminal that is in same channels with described target terminal user and is in same carrier wave, and target terminal user and each the second user terminal are adjusted on the different carrier of residing same passage;
The second determination module, be used for determining from described target terminal user be in different passages, be in same carrier wave and and described target terminal user between isolation surpass each the 3rd user terminal of the isolation threshold value of setting, and each the 3rd user terminal is defined as the user terminal that target terminal user is carried out space division multiplexing, and adopt the data of the described target terminal user of same code resource transmission and each the 3rd user terminal.
9. system as claimed in claim 8, is characterized in that, whether the sky minute feature that the detection module in described base station detects between described target terminal user and other user terminals changes, and is specially:
Determining the current residing passage of target terminal user changes, or/and when determining isolation between this target terminal user and other user terminals and changing, determine that this target terminal user and the empty dtex between other user terminals are levyd to give birth to change.
10. system as claimed in claim 9, is characterized in that, the detection module in described base station is determined the current residing passage of target terminal user and changed, and is specially:
Detect the performance number that each passage receives the upward signal of described target terminal user transmission;
The passage that receives the performance number maximum is defined as the current residing passage of described target terminal user;
The current residing passage of comparison object user terminal when last detection time, residing passage was not identical, determines that the residing passage of described target terminal user changes with described target terminal user.
11. system as claimed in claim 9 is characterized in that, the isolation that the detection module in described base station is determined between described target terminal user and other user terminals changes, and is specially:
The performance number that the residing passage of described target terminal user is received the upward signal of this target terminal user transmission is defined as the first performance number;
The performance number that the residing passage of described other user terminals is received the upward signal of described target terminal user transmission is the second performance number;
Determine isolation between described target terminal user and described user terminal according to described the first performance number and described the second performance number;
With the described isolation determined and last detection time described target terminal user and described other user terminals between isolation compare, determine when not identical that isolation between described target terminal user and described other user terminals changes.
12. system as described in claim 8～11 any one is characterized in that, the first determination module in described radio network controller also comprises before described target terminal user and each the second user terminal being adjusted on the different carrier of residing same passage:
For each the second user terminal, the frequency values of the second user terminal and frequency division filtering factor α are multiplied each other obtain the first value, the frequency values of described target terminal user is multiplied each other with (1-α) obtain the second value, described the first value and the second value addition are obtained the 3rd value, the span of described α is [0,1];
When judging described the 3rd value less than the frequency threshold set, described target terminal user and described the second user terminal are adjusted on the different carrier of residing same passage; When judging described the 3rd value more than or equal to described frequency threshold, do not need described target terminal user and described the 3rd user terminal are adjusted on the different carrier of residing same passage.
13. system as described in claim 8～11 any one is characterized in that, the second determination module in described radio network controller is defined as with each the 3rd user terminal the user terminal that target terminal user is carried out space division multiplexing, is specially:
For each the 3rd user terminal, the isolation between described target terminal user and the 3rd user terminal is multiplied each other with an empty minute filtering factor β obtains the first value; Isolation between last detection time described the 3rd user terminal and described target terminal user is multiplied each other with (1-β) obtain the second value; The addition of described the first value and the second value is obtained the 3rd value, and the span of described β is [0,1];
When judging described the 3rd value more than or equal to described isolation threshold value, described the 3rd user terminal is defined as carrying out with described target terminal user the user terminal of space division multiplexing.
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| CN101267235A (en) * | 2007-03-16 | 2008-09-17 | 大唐移动通信设备有限公司 | A method and device for realizing space division multiplexing |
| CN101345975A (en) * | 2007-07-13 | 2009-01-14 | 中兴通讯股份有限公司 | Method and apparatus for space division multiple access resource scheduling, and radio communication system |
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| CN101267235A (en) * | 2007-03-16 | 2008-09-17 | 大唐移动通信设备有限公司 | A method and device for realizing space division multiplexing |
| CN101345975A (en) * | 2007-07-13 | 2009-01-14 | 中兴通讯股份有限公司 | Method and apparatus for space division multiple access resource scheduling, and radio communication system |
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