CN102300213A - Method and device for realizing frequency spectrum coordination between TDD (time division duplex) system and FDD (frequency division duplex) system - Google Patents
Method and device for realizing frequency spectrum coordination between TDD (time division duplex) system and FDD (frequency division duplex) system Download PDFInfo
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Abstract
The invention discloses a method and device for realizing frequency spectrum coordination between a TDD (time division duplex) system and an FDD (frequency division duplex) system. The method comprises the following steps of: according to obtained resource allocation results of the TDD system and the FDD system and user information to be scheduled, computing the required uplink band width of the TDD system and the available uplink band width of the FDD system; and according to computed results, ensuring the TDD system to occupy uplink resources of the FDD system to perform uplink transmission. By the method, when the uplink band width of the FDD system is surplus and the uplink band width of the TDD system is insufficient, the TDD system can occupy the uplink frequency band of the FDD system to perform uplink transmission, thus the flexible allocation of the frequency spectrum between the TDD system and the FDD system is realized, the utilization ratio of the frequency spectrum is improved, and the throughput of the systems is improved.
Description
Technical field
The present invention relates to frequency spectrum resource and utilize technology, refer to realize between a kind of (TDD, Time Division Duplexing) system and (FDD, Frequency Division Duplexing) system the method and the device of spectral coordination especially.
Background technology
Frequency spectrum resource is the basic media of communication, and frequency spectrum is limited, makes people wish to improve to greatest extent the availability of frequency spectrum.
The development of different radio access technologies also is in order to improve the availability of frequency spectrum.But; existence is hardly switched in frequency spectrum between each wireless access technology of existing communication network and load; be that different radio access technologies does not almost have cooperative operation each other; like this; make frequency spectrum use relatively and solidify, dumb, reduced the frequency spectrum utilization rate; usually can occur: the frequency spectrum load of the wireless access technology that has is lighter relatively, and the frequency spectrum load of another wireless access technology is heavier.In order to address this problem, studying the wireless aware technology, realize the dynamic adjustment of network by cognitive radio, comprise the adjustment of running parameters such as the wireless access technology in an area and frequency band.
The final goal of cognitive radio is: require different wireless access technologys can both to insert and communicate on different frequency bands.This requirement is all very high to the requirement of base station and terminal, even might increase new network element in existing network infrastructure, and implementing can more complicated.At present, the cognitive radio power technology also is in conceptual phase, and attainable technical scheme is not provided.
Summary of the invention
In view of this, method and the device of realizing spectral coordination is provided to provide between a kind of TDD system and FDD system main purpose of the present invention, can realize frequency spectrum flexible allocation, provide the availability of frequency spectrum, and then elevator system throughput.
For achieving the above object, technical scheme of the present invention is achieved in that
Realize the method for spectral coordination between a kind of TDD system and FDD system, comprising:
Obtain the resource allocation result of time division multiplexing TDD system and frequency division multiplexing FDD system and treat dispatched users information;
Bandwidth and FDD system uplink available bandwidth that statistics TDD system uplink needs;
According to statistics, realize that the TDD system takies FDD system uplink resource and carries out uplink.
Described statistics is: the up available bandwidth of described FDD system has residue, and the bandwidth deficiency of the up needs of TDD system.
Described TDD system takies FDD system uplink resource and carries out uplink and be: user's standard with FDD in the FDD system of described TDD system sends, and takies the uplink spectrum of FDD system constantly at the sub-frame of uplink of TDD system.
The user of described TDD system transmits identical data at the ascending resource of TDD system and the ascending resource of FDD system.
Described identical data have multi-form.
The user of described TDD system transmits different data at the ascending resource of TDD system and the ascending resource of FDD system.
This method also comprises: the user of described TDD system and the user of FDD system carry out uplink multi-users MIMO pairing on same resource.
Described TDD system and FDD system colocation site.
Realize the device of spectral coordination between a kind of TDD system and FDD system, mainly comprise TDD system, FDD system and statistic unit, wherein,
The TDD system is used to obtain the resource allocation result of self and treat dispatched users information, and reports statistic unit;
The FDD system is used to obtain the resource allocation result of self and treat dispatched users information, and reports statistic unit; Receive the TDD system and take the scheduling result that FDD system uplink resource is carried out uplink, know the occupied situation of self upstream band;
Statistic unit is used to add up the bandwidth and the FDD system uplink available bandwidth of TDD system uplink needs, and the analytic statistics result, and whether decision TDD system can take the ascending resource of FDD system, and situation about taking, and sends to TDD system and FDD system.
Described TDD system and FDD system colocation site.
The technical scheme that provides from the invention described above as can be seen, according to the resource allocation result of TDD system that obtains and FDD system with treat dispatched users information, bandwidth and FDD system uplink available bandwidth that statistics TDD system uplink needs; According to statistics, realize that the TDD system takies FDD system uplink resource and carries out uplink.Pass through the inventive method, upstream bandwidth in the FDD system has residue, and when the upstream bandwidth of TDD system is not enough, the TDD system can take the upstream band of FDD system and carry out uplink, realized frequency spectrum between TDD system and FDD system flexible allocation, the availability of frequency spectrum is provided, and then promoted throughput of system.
Description of drawings
Fig. 1 is for realizing the flow chart of the method for spectral coordination between TDD system of the present invention and FDD system;
Fig. 2 uses the schematic diagram in the moment of FDD ascending resource for TDD of the present invention system;
Fig. 3 is for realizing the composition schematic diagram of the device of spectral coordination between TDD system of the present invention and FDD system;
Fig. 4 is the schematic flow sheet of first embodiment of the invention;
Fig. 5 is the schematic flow sheet of second embodiment of the invention.
Embodiment
Fig. 1 as shown in Figure 1, may further comprise the steps for realizing the flow chart of the method for spectral coordination between TDD system of the present invention and FDD system:
Step 100: obtain the resource allocation result of TDD system and FDD system and treat dispatched users information.
Among the present invention, FDD system and TDD system are TDD system and FDD system colocation site in a set of equipment, and particularly, TDD system and FDD system are present in the base station simultaneously.
In this step, according to prior art, in each dispatching cycle, TDD system and FDD system carry out priority arrangement to user separately respectively, carry out resource allocation in advance, thereby obtain the resource allocation result of TDD system and FDD system and treat dispatched users information.
Step 101: bandwidth and FDD system uplink available bandwidth that statistics TDD system uplink needs.
According to the resource allocation result that obtains with treat dispatched users information, bandwidth and FDD system uplink residual available bandwidth that statistics TDD system uplink needs, specific implementation belongs to those skilled in the art's conventional techniques means, repeats no more here.Herein, the bandwidth that the TDD system uplink is needed is designated as BW
Required, the residual available bandwidth of FDD system uplink is designated as BW
Remained
Step 102:, realize that the TDD system takies FDD system uplink resource and carries out uplink according to statistics.
In this step, when the upstream bandwidth of FDD system has residue, and when the upstream bandwidth of TDD system is not enough, TDD can consider that the upstream band resource that takies FDD carries out uplink, the user's standard with FDD on the ascending resource of FDD that is TDD sends, but need take the uplink spectrum of FDD constantly at the sub-frame of uplink of TDD, as shown in Figure 2, Fig. 2 uses the schematic diagram in the moment of FDD ascending resource for TDD of the present invention system, the D subframe is represented the descending sub frame of TDD system among Fig. 2, the S subframe is represented the special subframe of TDD system, the U subframe is represented the sub-frame of uplink of TDD system, the moment that the TDD system uses the FDD system must be a U subframe moment corresponding in the TDD system, just can use.
Such as,
If BW
Required＞0, and BW
Remained＞0, can consider that so the TDD system takies the uplink mode of FDD system uplink resource in uplink; And utilize control information to notify TDD user's transport service on the part upstream bandwidth of FDD.
Can realize real-time resource borrowing by the inventive method, therefore, maximize the availability of frequency spectrum from time granularity.
In this step,, following two kinds of situations can be arranged if whether the ascending resource of the CU FDD of TDD system is identical according to data on TDD bandwidth and the FDD bandwidth:
TDD user is identical data the ascending resource transmission of the ascending resource of TDD and FDD, can be the multi-form of identical data here, is also referred to as diversity; And,
TDD user is different data the ascending resource transmission of the ascending resource of TDD and FDD, is also referred to as multiplexing.
In this step, if the ascending resource of the CU FDD of TDD system, according to whether TDD user can do uplink multi-users multiple-input and multiple-output (MIMO) pairing with FDD user on same resource, can have with situation:, then match when TDD user can do uplink multi-users MIMO pairing with FDD user on same resource; Otherwise this resource of CU of having only a system.
By the inventive method, realized frequency spectrum flexible allocation, the availability of frequency spectrum is provided, and then promoted throughput of system.
Utilize the inventive method, require user terminal (UE) to may be simultaneously operated in system and the corresponding frequency band of TDD system and FDD.
At the inventive method, a kind of device also is provided, Fig. 3 is for realizing the composition schematic diagram of the device of spectral coordination between TDD system of the present invention and FDD system, as shown in Figure 3, apparatus of the present invention mainly comprise TDD system, FDD system and statistic unit, wherein,
The TDD system is used to obtain the resource allocation result of self and treat dispatched users information, and reports statistic unit;
The FDD system is used to obtain the resource allocation result of self and treat dispatched users information, and reports statistic unit; Receive the TDD system and take the scheduling result that FDD system uplink resource is carried out uplink, know the occupied situation of self upstream band.
Statistic unit is used to add up the bandwidth and the FDD system uplink available bandwidth of TDD system uplink needs, and the analytic statistics result, and whether decision TDD system can take the ascending resource of FDD system, and situation about taking, and sends to TDD system and FDD system.
Below in conjunction with embodiment the inventive method is described in detail.
Fig. 4 is the schematic flow sheet of first embodiment of the invention, at dispatching at the sub-frame of uplink of TDD system, as shown in Figure 4, comprising:
Step 400:TDD system and FDD system sort to the User Priority of internal system respectively, and carry out pre-allocation of resources.
Step 401:TDD system and FDD system are with resource allocation result and treat that dispatched users information reports statistic unit.
Step 402: statistic unit is coordinated bandwidth, and notice TDD system and FDD system.
This step comprises: the bandwidth BW of statistic unit statistics TDD system uplink needs
Required, and the FDD system uplink can bandwidth BW for public use
Remained(being also referred to as residual available bandwidth);
If BW
Required＞0, and BW
Remained＞0, in the present embodiment, the TDD system takies FDD system uplink resource in uplink; And utilize control information to notify TDD user's transport service on the part upstream bandwidth of FDD;
In the present embodiment, in the TDD system, TDD user is transmitted different data contents on the upstream bandwidth of FDD system and TDD system; Perhaps, in the TDD system, TDD user is transmitted identical data content on the upstream bandwidth of FDD system and TDD system, and signal form can be different here, and still the packet from high level should be the same.
Step 403:TDD system dispatches again according to the coordination result of step 402.
Fig. 5 is the schematic flow sheet of second embodiment of the invention, at dispatching at the sub-frame of uplink of TDD system, as shown in Figure 5, comprising:
Step 500:TDD system and FDD system sort to the User Priority of internal system respectively, and carry out pre-allocation of resources.
Step 501:TDD system and FDD system are with resource allocation result and treat that dispatched users information reports statistic unit.
Step 502: statistic unit is coordinated bandwidth.In this step, the bandwidth BW that statistic unit statistics TDD system uplink needs
Required, and the FDD system uplink can bandwidth BW for public use
Remained(being also referred to as residual available bandwidth).
Step 503: in the present embodiment, suppose that TDD system and FDD system can carry out the multiuser MIMO pairing, so, statistic unit carries out up how the pairing with MIMO to TDD user and FDD user.The specific implementation of this step belongs to those skilled in the art's conventional techniques means, no longer describes in detail here.
Step 504: statistic unit is with bandwidth and pairing result notification TDD system and the FDD system coordinated.
Step 505:TDD system reschedules according to the coordination result of step 502.
If BW
Required＞0, and BW
Remained＞0, in the present embodiment, the TDD system takies FDD system uplink resource in uplink; And utilize control information to notify TDD user's transport service on the part upstream bandwidth of FDD; And,
In the present embodiment, in the TDD system, TDD user is transmitted simultaneously with FDD user on the FDD upstream bandwidth.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. realize the method for spectral coordination between TDD system and FDD system, it is characterized in that, comprising:
Obtain the resource allocation result of time division multiplexing TDD system and frequency division multiplexing FDD system and treat dispatched users information;
Bandwidth and FDD system uplink available bandwidth that statistics TDD system uplink needs;
According to statistics, realize that the TDD system takies FDD system uplink resource and carries out uplink.
2. method according to claim 1 is characterized in that, described statistics is: the up available bandwidth of described FDD system has residue, and the bandwidth deficiency of the up needs of TDD system.
3. method according to claim 2, it is characterized in that, described TDD system takies FDD system uplink resource and carries out uplink and be: user's standard with FDD in the FDD system of described TDD system sends, and takies the uplink spectrum of FDD system constantly at the sub-frame of uplink of TDD system.
4. method according to claim 1 is characterized in that, the user of described TDD system transmits identical data at the ascending resource of TDD system and the ascending resource of FDD system.
5. method according to claim 4 is characterized in that, described identical data have multi-form.
6. method according to claim 1 is characterized in that, the user of described TDD system transmits different data at the ascending resource of TDD system and the ascending resource of FDD system.
7. according to each described method of claim 1～3, it is characterized in that this method also comprises: the user of described TDD system and the user of FDD system carry out uplink multi-users MIMO pairing on same resource.
8. according to each described method of claim 1～7, it is characterized in that described TDD system and FDD system colocation site.
9. realize the device of spectral coordination between TDD system and FDD system, it is characterized in that, mainly comprise TDD system, FDD system and statistic unit, wherein,
The TDD system is used to obtain the resource allocation result of self and treat dispatched users information, and reports statistic unit;
The FDD system is used to obtain the resource allocation result of self and treat dispatched users information, and reports statistic unit; Receive the TDD system and take the scheduling result that FDD system uplink resource is carried out uplink, know the occupied situation of self upstream band;
Statistic unit is used to add up the bandwidth and the FDD system uplink available bandwidth of TDD system uplink needs, and the analytic statistics result, and whether decision TDD system can take the ascending resource of FDD system, and situation about taking, and sends to TDD system and FDD system.
10. device according to claim 9 is characterized in that, described TDD system and FDD system colocation site.
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| CN201010220679.7A CN102300213B (en) | 2010-06-28 | 2010-06-28 | The method and device of spectral coordination is realized between TDD system and FDD system |
| PCT/CN2010/078893 WO2012000278A1 (en) | 2010-06-28 | 2010-11-18 | A method and device for realizing frequency spectrum coordination between tdd system and fdd system |
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| CN201010220679.7A CN102300213B (en) | 2010-06-28 | 2010-06-28 | The method and device of spectral coordination is realized between TDD system and FDD system |
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| CN104734827A (en) * | 2013-12-23 | 2015-06-24 | 中国电信股份有限公司 | Method and system for dual-mode terminal to utilize DwPTS and FDD macro eNB |
| CN105101421A (en) * | 2014-05-09 | 2015-11-25 | 宇龙计算机通信科技(深圳)有限公司 | Resource allocation method and resource allocation device |
| WO2016037305A1 (en) * | 2014-09-08 | 2016-03-17 | Qualcomm Incorporated | Flexible transmissions on one or more frequency division duplexing resources |
| CN105553524A (en) * | 2015-12-09 | 2016-05-04 | 中国联合网络通信集团有限公司 | Method and device for acquiring downlink channel matrix of FDD system |
| WO2019010711A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳前海达闼云端智能科技有限公司 | Method and device for use in reporting terminal capability |
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| US11050468B2 (en) * | 2014-04-16 | 2021-06-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
| US10194346B2 (en) | 2012-11-26 | 2019-01-29 | Rearden, Llc | Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology |
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| CN104734827A (en) * | 2013-12-23 | 2015-06-24 | 中国电信股份有限公司 | Method and system for dual-mode terminal to utilize DwPTS and FDD macro eNB |
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| WO2019010711A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳前海达闼云端智能科技有限公司 | Method and device for use in reporting terminal capability |
| US11006270B2 (en) | 2017-07-14 | 2021-05-11 | Cloudminds (Shanghai) Robotics Systems Co., Ltd. | Method and device for use in reporting terminal capability |
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| WO2012000278A1 (en) | 2012-01-05 |
| CN102300213B (en) | 2016-08-03 |
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