CN103687013A - Selection method adopting dynamic time-slot ratio under TDD mode - Google Patents
Selection method adopting dynamic time-slot ratio under TDD mode Download PDFInfo
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- CN103687013A CN103687013A CN201210357152.8A CN201210357152A CN103687013A CN 103687013 A CN103687013 A CN 103687013A CN 201210357152 A CN201210357152 A CN 201210357152A CN 103687013 A CN103687013 A CN 103687013A
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Abstract
The invention proposes a selection method which adopts a dynamic time-slot ratio under a TDD mode. The method includes: step1: a base station detects frequencies of other base stations after being started, wherein if in a work frequency range, no signals of other base stations are detected or an independent work frequency point can be found, that is, coincidence with the work frequency bands of the other base stations does not exist, the base station enters an uplink and downlink ratio free selection state under which uplink and downlink ratios can be automatically selected according to a practical situation; step2: if the base station cannot select an independent work frequency point, then a frequency point which has comparatively weak receiving signals is selected and then uplink and downlink ratios of other base stations of the frequency point are detected; and then a time-slot ratio which is identical with that of the detecting base station is selected and then a fixed uplink and downlink ratio state is entered at the same time. The selection method which adopts the dynamic time-slot ratio under the TDD mode is capable of preventing interferences effectively and using effectively the uplink and downlink ratios of a TDD at the same time so that effective selection of uplink and downlink configuration is ensured.
Description
Technical field
The present invention relates to wireless communication field, and be particularly related to a kind of TDD(time division duplex, Time Division Duplexing) adopt the system of selection of dynamic slot proportioning under pattern.
Background technology
TD LTE(timesharing Long Term Evolution, Time Division Long Term Evolution) multiple uplink and downlink timeslot proportioning is provided, with the needs of better adaptation business variation.But in actual applications,, due to the restriction being interfered, each community can not be random carries out the setting of up-downgoing proportioning.
As shown in Figure 1, community for different proportionings, the community of more configurating downlink time slots will produce inter base station interference, the UE(subscriber equipment in Er Gai community, User Equipment to the less community of downstream arrangements) will be subject to the interference that in the less community of downstream arrangements, UE brings.
Therefore, need to invent the system of selection that adopts dynamic slot proportioning under a kind of tdd mode.
Summary of the invention
For the drawback of prior art, the object of the invention is to propose to adopt under a kind of tdd mode the system of selection of dynamic slot proportioning.
The present invention proposes to adopt under a kind of tdd mode the system of selection of dynamic slot proportioning, comprising:
Step 1: base station is detected other base station frequency after opening, wherein, if other base station signal do not detected in working frequency range, or can find independent working frequency points, that is, without overlapping, base station enters the free selection mode of up-downgoing proportioning with other base station working band, under this state, up-downgoing proportioning can be selected automatically according to actual conditions;
Step 2: if base station selected less than the frequency that works independently, select one to receive the weak frequency of signal, detect the up-downgoing proportioning of this other base station of frequency, select the time slot proportion identical with base stations detected, enter up-downgoing proportioning stationary state simultaneously.
Further, the method also comprises:
Step 3: the monitoring time T of other base station situation in regular testing frequency range of base station sets, base station carries out detecting in working frequency range, wherein,
If base station is in the free selection mode of up-downgoing proportioning, other base station signal in working frequency points, do not detected, continue to keep the free selection mode of up-downgoing proportioning, otherwise detect the up-downgoing proportioning of this other base station of frequency, select the time slot proportion identical with base stations detected, enter up-downgoing proportioning stationary state;
If base station is not in up-downgoing proportioning stationary state, other base station signal in testing frequency, if there is the frequency that can work independently, and current state is without service UE, base station proceeds to the free selection mode of up-downgoing proportioning, otherwise base station keeps original uplink and downlink timeslot proportioning.
Further, described monitoring time T span is 1 second-60 seconds.
The present invention proposes the mechanism that up-downgoing proportioning is effectively selected in a kind of base station, can effectively avoid interference, and effectively utilizes the up-downgoing proportioning of TDD simultaneously, guarantees effective selection of uplink-downlink configuration.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of inter base station interference in prior art;
Fig. 2 is a kind of preferred embodiment FB(flow block) of the inventive method.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that embodiment described herein is only for explaining the present invention, rather than for limiting the present invention.
As shown in Figure 2, the present invention proposes to adopt the system of selection of dynamic slot proportioning to comprise under tdd mode:
Step 1: base station is detected other base station frequency after opening, wherein, if other base station signal do not detected in working frequency range, or can find independent working frequency points, that is, without overlapping, base station enters the free selection mode of up-downgoing proportioning with other base station working band, under this state, up-downgoing proportioning can be selected automatically according to actual conditions;
Step 2: if base station selected less than the frequency that works independently, select one to receive the weak frequency of signal, detect the up-downgoing proportioning of this other base station of frequency, select the time slot proportion identical with base stations detected, enter up-downgoing proportioning stationary state simultaneously.
Step 3: the monitoring time T of other base station situation in regular testing frequency range of base station sets, carry out detecting in working frequency range, wherein,
If base station is in the free selection mode of up-downgoing proportioning, other base station signal in working frequency points, do not detected, continue to keep the free selection mode of up-downgoing proportioning, otherwise detect the up-downgoing proportioning of this other base station of frequency, select the time slot proportion identical with base stations detected, enter up-downgoing proportioning stationary state;
If base station is not in up-downgoing proportioning stationary state, other base station signal in testing frequency, if there is the frequency that can work independently, and current state is without service UE, base station proceeds to the free selection mode of up-downgoing proportioning, otherwise base station keeps original uplink and downlink timeslot proportioning.
In the present embodiment, described monitoring time T span is 1 second-60 seconds.
The present invention, by dynamically selecting time slot proportion, can effectively avoid interference, and effectively utilizes the up-downgoing proportioning of TDD simultaneously, guarantees effective selection of uplink-downlink configuration.
Above are only preferred embodiment of the present invention, certainly, can also have other execution mode with further exploration according to actual needs.But, should be clear and definite, the conversion based on the similar execution mode with same idea above-mentioned or that other is not explained out, all should be encompassed among the protection range of the claims in the present invention.
Claims (3)
1. under tdd mode, adopt a system of selection for dynamic slot proportioning, it is characterized in that, the method comprises:
Step 1: base station is detected other base station frequency after opening, wherein, if other base station signal do not detected in working frequency range, or can find independent working frequency points, that is, without overlapping, base station enters the free selection mode of up-downgoing proportioning with other base station working band, under this state, up-downgoing proportioning can be selected automatically according to actual conditions;
Step 2: if base station selected less than the frequency that works independently, select one to receive the weak frequency of signal, detect the up-downgoing proportioning of this other base station of frequency, select the time slot proportion identical with base stations detected, enter up-downgoing proportioning stationary state simultaneously.
2. method according to claim 1, is characterized in that, also comprises:
Step 3: the monitoring time T of other base station situation in regular testing frequency range of base station sets, carry out detecting in working frequency range, wherein,
If base station is in the free selection mode of up-downgoing proportioning, other base station signal in working frequency points, do not detected, continue to keep the free selection mode of up-downgoing proportioning, otherwise detect the up-downgoing proportioning of this other base station of frequency, select the time slot proportion identical with base stations detected, enter up-downgoing proportioning stationary state;
If base station is not in up-downgoing proportioning stationary state, other base station signal in testing frequency, if there is the frequency that can work independently, and current state is without service UE, base station proceeds to the free selection mode of up-downgoing proportioning, otherwise base station keeps original uplink and downlink timeslot proportioning.
3. method according to claim 2, is characterized in that, described monitoring time T span is 1 second-60 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210357152.8A CN103687013A (en) | 2012-09-21 | 2012-09-21 | Selection method adopting dynamic time-slot ratio under TDD mode |
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| CN201210357152.8A CN103687013A (en) | 2012-09-21 | 2012-09-21 | Selection method adopting dynamic time-slot ratio under TDD mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015154224A1 (en) * | 2014-04-08 | 2015-10-15 | 华为技术有限公司 | Method for configuring uplink-downlink configuration, base station and user equipment |
| WO2015180640A1 (en) * | 2014-05-29 | 2015-12-03 | 索尼公司 | Electronic device and method for synchronous detection between time division duplex wireless communication cells |
| CN106572485A (en) * | 2015-10-13 | 2017-04-19 | 中国电信股份有限公司 | Method used for adjacent frequency interference detection and optimization and small base station |
| CN106717085A (en) * | 2014-04-29 | 2017-05-24 | 华为技术有限公司 | Method and base station used for achieving cross-station flexible ratio |
| CN107466105B (en) * | 2016-06-06 | 2021-01-26 | 成都鼎桥通信技术有限公司 | Air and ground network joint calling system and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015154224A1 (en) * | 2014-04-08 | 2015-10-15 | 华为技术有限公司 | Method for configuring uplink-downlink configuration, base station and user equipment |
| CN106717085A (en) * | 2014-04-29 | 2017-05-24 | 华为技术有限公司 | Method and base station used for achieving cross-station flexible ratio |
| CN106717085B (en) * | 2014-04-29 | 2019-11-29 | 华为技术有限公司 | For realizing the cross-site method flexibly matched and base station |
| WO2015180640A1 (en) * | 2014-05-29 | 2015-12-03 | 索尼公司 | Electronic device and method for synchronous detection between time division duplex wireless communication cells |
| US10257010B2 (en) | 2014-05-29 | 2019-04-09 | Sony Corporation | Electronic device and method for synchronous detection between time division duplex wireless communication cells |
| US10708108B2 (en) | 2014-05-29 | 2020-07-07 | Sony Corporation | Electronic device and method for synchronous detection between time division duplex wireless communication cells |
| CN106572485A (en) * | 2015-10-13 | 2017-04-19 | 中国电信股份有限公司 | Method used for adjacent frequency interference detection and optimization and small base station |
| CN107466105B (en) * | 2016-06-06 | 2021-01-26 | 成都鼎桥通信技术有限公司 | Air and ground network joint calling system and device |
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Owner name: ZHANXUN COMMUNICATIONS (SHANGHAI) CO., LTD. Effective date: 20141015 |
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Effective date of registration: 20141015 Address after: 100191 Haidian District, North Garden Road, No. 52 Telecommunications Research Institute, block B, level 6, Beijing Applicant after: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology Applicant after: Spreadtrum communications (Shanghai) Co., Ltd. Address before: 100191 Haidian District, North Garden Road, No. 52 Telecommunications Research Institute, block B, level 6, Beijing Applicant before: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology |
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Application publication date: 20140326 |