CN107124384A - Method, device and base station that a kind of protection interval is set - Google Patents
Method, device and base station that a kind of protection interval is set Download PDFInfo
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- CN107124384A CN107124384A CN201610105286.9A CN201610105286A CN107124384A CN 107124384 A CN107124384 A CN 107124384A CN 201610105286 A CN201610105286 A CN 201610105286A CN 107124384 A CN107124384 A CN 107124384A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
Abstract
The present invention provides method, device and the base station that a kind of protection interval is set, and this method includes：Obtain the one or more of propagation delay, Timing Advance or the distance of the multiple terminals and base station being connected with base station；The progress sub-clustering of the multiple terminal is obtained at least one cluster by one or more according to the propagation delay, Timing Advance or distance, wherein including at least one terminal in each cluster；According to the corresponding most long propagation delay time of the terminal in each cluster or maximum time lead or maximum distance, the configuration information of the protection interval of the corresponding scheduling subframe of each cluster is set.Base station is according to the propagation delay, Timing Advance or distance with terminal in this method; sub-clustering processing is carried out to terminal, so that the flexible configuration to protection interval length is realized, risk of interferences between effectively being stood in reduction overhead and system; round-trip delay is reduced simultaneously, improves Consumer's Experience.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method of protection interval setting, dress
Put and base station.
Background technology
RTT (Round Trip Time, round-trip delay) is the important performance for weighing mobile communication business quality
Index.Since transmitting terminal sends data, the time of the confirmation from receiving terminal is received to transmitting terminal by RTT.
Here, receiving terminal is received soon to send after Data Post parsing and confirmed.
Existing mobile communication is mainly interpersonal communication.Miniaturization and intelligence with hardware device
Change, following 5G mobile communication is more that the high speed connection between " people and thing " and " thing and thing " should
With.As real-time cloud computing, augmented reality, virtual reality, game on line, tele-medicine, intelligent transportation,
The business such as intelligent grid, remote real_time control.These business are more sensitive to time delay, and also time delay is proposed more
High demand.Current industry proposition is reduced to the RTT of existing communication system the 1ms order of magnitude, but
Existing LTE (Long Term Evolution, Long Term Evolution) system does not support that general RRT exists
10ms and more than 10ms, it is impossible to meet requirements of the future 5G to the RRT of communication system.
To shorten RTT time delays, system wireless frame can be shortened, for example, by each radio frames by LTE
The 10ms of system is changed to 1ms, wherein being protected comprising sub-frame of uplink, descending sub frame, and ascending-descending subframes
It is spaced (Guard Period).The up-downgoing protection interval of traditional radio frames is determined by MPS process distance
It is fixed, after wireless frame length significantly reduces, it is assumed that MPS process is if constant, if continuing using passing
System method, protection interval expense proportion will be significantly increased, and will have a strong impact on systematic function and Consumer's Experience.
The content of the invention
It is an object of the invention to provide method, device and the base station that a kind of protection interval is set, open system
Risk of interferences is effectively reduced between being stood in pin and system, while reducing round-trip delay, improves Consumer's Experience.
To achieve these goals, the method that a kind of protection interval provided in an embodiment of the present invention is set, including：
Obtain propagation delay, Timing Advance or the distance of the multiple terminals and base station being connected with base station
It is one or more；
The multiple terminal is carried out according to the one or more of the propagation delay, Timing Advance or distance
Sub-clustering, obtains at least one cluster, wherein including at least one terminal in each cluster；
According to the corresponding most long propagation delay time of the terminal in each cluster or maximum time lead or maximum distance,
The protection interval configuration information of the corresponding scheduling subframe of each cluster is set；
Wherein, the one or more according to the propagation delay, Timing Advance or distance are to described more
Individual terminal carries out sub-clustering, obtains at least one cluster, including：
The size of length, Timing Advance to the propagation delay or the far and near one or more of distance are entered
The sequence processing of row ascending order or descending, obtains ranking results；
Sub-clustering is carried out to the multiple terminal according to the ranking results, at least one cluster is obtained.
Wherein, the corresponding most long propagation delay time of terminal, maximum time lead in each cluster of the basis or
The one or more of maximum distance, set the protection interval configuration information of the corresponding scheduling subframe of each cluster, bag
Include：
According to the ranking results, the corresponding most long propagation delay time of terminal in each cluster, maximum time are obtained
The one or more of lead or maximum distance；
Obtain local optional protection interval configuration information；
According to one or more and the institute of the most long propagation delay time, maximum time lead or maximum distance
Optional protection interval configuration information is stated, sets the protection interval length of corresponding scheduling subframe in each cluster to match somebody with somebody
Confidence ceases.
Wherein, the corresponding most long propagation delay time of terminal obtained in each cluster, maximum time lead or
The one or more of maximum distance, including：
The length of the corresponding propagation delay time of terminal in each cluster of multilevel iudge, the size of Timing Advance or away from
From far and near one or more；
It is determined that the corresponding most long propagation delay time of terminal, maximum time lead or maximum distance in each cluster
It is one or more.
Wherein, in addition to：
Current scheduling subframe or follow-up scheduling subframe are issued in BCCH or CCCH
Protection interval configuration information or the subframe configuration information for including protection interval configuration information.
Wherein, in addition to：
The base station is coordinated with adjacent base station, for the same scheduling subframe moment, the base station with it is adjacent
The sub-frame configuration that base station is configured using identical protection interval or configured comprising identical protection interval.
Wherein, the base station is coordinated with adjacent base station, for same scheduling subframe moment, the base station
The sub-frame configuration for being configured or being configured comprising identical protection interval using identical protection interval with adjacent base station,
Including：
Coordinated by inter-base station interface or privately owned signaling and the adjacent base station of the base station, adjusted for same
The subframe moment is spent, the base station is configured using identical protection interval with adjacent base station or protected comprising identical
It is spaced the sub-frame configuration of configuration.
Wherein, the base station is coordinated with adjacent base station, including：
The one or more of same sub-clustering are dispatched within the same scheduling subframe moment in the base station with adjacent base station
Terminal so that the base station uses identical protection interval with adjacent base station at the same scheduling subframe moment
Configuration or the sub-frame configuration configured comprising identical protection interval.
Wherein, the base station is coordinated with adjacent base station, in addition to：
When the base station and adjacent base station can not dispatch the terminal of same sub-clustering within the same scheduling subframe moment
When, the base station is with adjacent base station at the same scheduling subframe moment using many belonging to scheduled terminal
The corresponding maximum protection interval configuration of individual sub-clustering.
Wherein, methods described also includes：
According to the ratio of terminating traffic in each cluster, the corresponding protection interval of the different clusters of adjustment matches somebody with somebody confidence
The ratio that breath or subframe configuration information comprising protection interval configuration information occur.
The embodiment of the present invention also provides the device that a kind of protection interval is set, including：
Acquisition module, propagation delay, time for obtaining the multiple terminals being connected with base station and the base station
The one or more of lead or distance；
Sub-clustering module, for according to the one or more by institute of the propagation delay, Timing Advance or distance
State multiple terminals and carry out sub-clustering, obtain at least one cluster, wherein including at least one terminal in each cluster；
Setup module, for being shifted to an earlier date according to the corresponding most long propagation delay time of the terminal in each cluster, maximum time
Amount or maximum distance, set the protection interval configuration information of the corresponding scheduling subframe of each cluster.
Wherein, the sub-clustering module includes：
Submodule is handled, for the remote of the length to the propagation delay, the size of Timing Advance or distance
Near one or more of sequence processing for carrying out ascending order or descending, obtain ranking results；
Sub-clustering submodule, for carrying out sub-clustering to the multiple terminal according to the ranking results, is obtained at least
One cluster.
Wherein, the setup module includes：
First acquisition submodule, for according to the ranking results, the terminal obtained in each cluster to be corresponding most
The one or more of long propagation delay time, maximum time lead or maximum distance；
Second acquisition submodule, for obtaining local optional protection interval configuration information；
Submodule is set, for most long propagation delay time, maximum time lead or maximum distance according to
One or more and described optional protection interval configuration information, sets corresponding scheduling subframe in each cluster
Protection interval length configuration information.
Wherein, the acquisition submodule includes：
Comparison judgment unit, length for the corresponding propagation delay time of terminal in each cluster of multilevel iudge, when
Between lead size or the far and near one or more of distance；
Determining unit, for determining that the corresponding most long propagation delay time of the terminal in each cluster, maximum time shift to an earlier date
The one or more of amount or maximum distance.
Wherein, in addition to：
Configuration information issues module, is issued for the base station in BCCH or CCCH
The configuration information of the protection interval of current scheduling subframe or follow-up scheduling subframe matches somebody with somebody confidence comprising protection interval
The subframe configuration information of breath；
Wherein, described device also includes：
Coordination module, is coordinated for the base station and adjacent base station, for the same scheduling subframe moment,
The base station is configured with adjacent base station using identical protection interval or comprising the configuration of identical protection interval
Sub-frame configuration.
Wherein, the Coordination module includes：
Coordinate submodule, for being carried out by inter-base station interface or privately owned signaling and the adjacent base station of the base station
Coordinate, for the same scheduling subframe moment, the base station is configured with adjacent base station using identical protection interval
Information or the sub-frame configuration configured comprising identical protection interval.
Wherein, the coordination submodule includes：
First coordination unit, within the same scheduling subframe moment dispatches same for the base station with adjacent base station
One or more terminals of sub-clustering so that adopted with adjacent base station at the same scheduling subframe moment base station
The sub-frame configuration for being configured or being configured comprising identical protection interval with identical protection interval.
Wherein, the coordination submodule also includes：
Second coordination unit, for that can not be adjusted within the same scheduling subframe moment with adjacent base station when the base station
When spending the terminal of same sub-clustering, the base station uses at the same scheduling subframe moment with adjacent base station and adjusted
The corresponding maximum protection interval configuration of multiple sub-clusterings belonging to the terminal of degree.
Wherein, described device also includes：
Adjusting module, for the ratio according to terminating traffic in each cluster, adjusts different clusters corresponding described
The ratio that protection interval configuration information or subframe configuration information comprising protection interval configuration information occur.
The embodiment of the present invention also provides a kind of base station, including：The device that protection interval as described above is set.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In the such scheme of the embodiment of the present invention, base station according to the propagation delay of terminal, Timing Advance or
Distance, sub-clustering processing is carried out to terminal, so that the flexible configuration to protection interval length is realized, effectively reduction
Risk of interferences between being stood in overhead and system, while reducing round-trip delay, improves Consumer's Experience.
Brief description of the drawings
The basic step schematic diagram for the method that Fig. 1 is set for the protection interval of the embodiment of the present invention；
The composition structural representation for the device that Fig. 2 is set for the protection interval of the embodiment of the present invention；
Fig. 3 is basic framework schematic diagram between the base station of the embodiment of the present invention；
Fig. 4 for the embodiment of the present invention base station between protection interval coordinated scheduling schematic diagram.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached
Figure and specific embodiment are described in detail.
The present invention can not meet following 5G to communication system for the round-trip delay of LTE system in the prior art
The problem of requirement of round-trip delay, there is provided a kind of method that protection interval is set, is realized to protection interval length
Flexible configuration, effectively reduction overhead and system in stand between risk of interferences, while reduce round-trip delay,
Improve Consumer's Experience.
First embodiment
As shown in figure 1, the embodiment of the present invention provides a kind of method that protection interval is set, including：
Step 11, propagation delay, the time advance for the multiple terminals and base station being connected with base station are obtained
The one or more of amount or distance；
Step 12, will be described many according to the one or more of the propagation delay, Timing Advance or distance
Individual terminal carries out sub-clustering, obtains at least one cluster, wherein including at least one terminal in each cluster；
Step 13, according to the corresponding most long propagation delay time of the terminal in each cluster or maximum time lead or
Maximum distance, sets the protection interval configuration information of the corresponding scheduling subframe of each cluster；
The method that the protection interval of the embodiment of the present invention is set, by base station according to the propagation delay with terminal or
Timing Advance or distance, sub-clustering processing is carried out to terminal, so as to realize flexibly matching somebody with somebody to protection interval length
Put, risk of interferences between effectively being stood in reduction overhead and system, while reducing round-trip delay, is improved and used
Experience at family.
Need exist for explanation, in step 11 of the embodiment of the present invention, base station can be by being connected with base station
What location information, uplink reference symbol power, accidental access signal power or the terminal of multiple terminals were reported
Propagation delay or apart from etc. determine the propagation delay or Timing Advance or distance of multiple terminals and base station.
Preferably, step 12 described in the embodiment of the present invention can further comprise：
Step 121, far and near one of length to the propagation delay, the size of Timing Advance or distance
Plant or a variety of sequence processing for carrying out ascending order or descending, obtain ranking results；
Step 122, sub-clustering is carried out to the multiple terminal according to the ranking results, obtains at least one cluster.
Specifically, at least one terminal is included in each cluster.
Here, base station can be according to the propagation delay or Timing Advance of the terminal for the multiple terminals being connected with base station
Or distance, sub-clustering processing is carried out to terminal.
Method one：
For example, base station and terminal A distance are 30km, the distance with terminal B is 20km, with terminal
C distance is 3km, and the distance with terminal D is 2km, and the distance with terminal E is 300m, with terminal
F distance is 200m；
Then whether base station, according to multiple terminals and the distance of base station, is the same order of magnitude according to the distance of distance,
Terminal A and terminal B are configured to cluster one, terminal C and terminal D are configured to cluster two, by terminal E and
Terminal F is configured to cluster three.
Method two：
In addition, base station can also further combined with base station maximal cover radius or the maximal cover radius pair of base station
The maximum allowable propagation delay time answered, and the optional protection interval configuration information of system, by what is be connected with base station
Multiple terminals carry out sub-clustering.
For example, base station maximal cover radius is 30km, the distance with terminal A is 30km, with terminal B
Distance be 20km, be 3km with terminal C distance, the distance with terminal D is 2km, with terminal E
Distance be 300m, be 200m with terminal F distance；
Then whether base station, according to multiple terminals and the distance of base station, is the same order of magnitude according to the distance of distance,
Terminal A and terminal B are configured to cluster one, terminal C and terminal D are configured to cluster two, by terminal E and
Terminal F is configured to cluster three.
Further, base station to terminal when carrying out sub-clustering, in addition it is also necessary to considers in the configuration of optional protection interval
In, there is some configuration to meet the Minimal Protective space requirements of multiple terminals in cluster.For example, can use as follows
Formula calculates Minimal Protective space requirements in cluster.
Minimal Protective interval=2 × (terminal ultimate range/light velocity in cluster)+equipment processing delay in cluster
The Minimal Protective of cluster one is at intervals of 210us；The Minimal Protective of cluster two is at intervals of 30us；The minimum of cluster three
Protection interval is 12us.
Optional protection interval is configured to：Configuration a is 250 μ s；Configuration b is 40 μ s；It is 15 to configure c
μs；
Cluster one can arrangement a, cluster two can arrangement b, cluster three can arrangement c.Sub-clustering result meets optional
Protection interval configuration restriction.
Certainly, it is only for some examples, base station also can be according to above-mentioned other sub-clustering modes to multiple terminals
Carry out sub-clustering.
Preferably, step 13 described in the embodiment of the present invention can further comprise：
Step 131, according to the ranking results, obtain the corresponding most long propagation delay time of terminal in each cluster,
The one or more of maximum duration lead or maximum distance；
Step 132, local optional protection interval configuration information is obtained；
Step 133, according to one kind of the most long propagation delay time or maximum duration lead or maximum distance or
A variety of and described optional protection interval configuration information, sets the protection of corresponding scheduling subframe in each cluster
Gap length configuration information.
Need exist for explanation, for GSM, usual 1 TTI (Transmission
TimeInterval, Transmission Time Interval) it is 1 subframe.
Here, by taking the method one in the citing in above-mentioned steps 12 as an example,
Base station is according to the maximum transmitted time delay or maximum duration lead of multiple terminals in each sub-clustering or farthest
Minimal Protective interval needed for distance calculating.For example, between Minimal Protective needed for being calculated using equation below in cluster
Every.
Minimal Protective interval=2 × (terminal ultimate range/light velocity in cluster)+equipment processing delay in cluster
The terminal ultimate range of cluster one is 30km, it is assumed that equipment processing delay is 10us, then cluster one is minimum protects
Shield is at intervals of 210us；The terminal ultimate range of cluster two is 3km, it is assumed that equipment processing delay is 10us, then
The Minimal Protective of cluster two is at intervals of 30us；The terminal ultimate range of cluster three is 300m, it is assumed that during equipment processing
Prolong as 10us, then the Minimal Protective of cluster three is at intervals of 12us.
The protection interval of cluster one can be then configured to 210us, the protection interval of cluster two is configured to 30us, cluster three
Protection interval be configured to 12us.
In addition it is also possible to exemplified by method two in citing in above-mentioned steps 12,
The protection interval length of the subframe of cluster one is configured to by base station according to optional protection interval configuration information
A, wherein a are 250 μ s；The protection interval length of the subframe of cluster two is configured to b, wherein b is 40 μ s；
The protection interval length of the subframe of cluster three is configured to c, wherein c is 15 μ s.
Further, the step 131 may include：
Step 1311, the length of the corresponding propagation delay time of terminal in each cluster of multilevel iudge, time advance
The size of amount or the far and near one or more of distance；
Step 1312, it is determined that the corresponding most long propagation delay time of terminal, maximum time lead in each cluster
Or the one or more of maximum distance.
Preferably, the methods described of the embodiment of the present invention also includes：
Step 14, the base station issues current scheduling subframe in BCCH or CCCH
Or the protection interval configuration information of follow-up scheduling subframe or the sub-frame configuration comprising protection interval configuration information are believed
Breath.
Preferably, the methods described of the embodiment of the present invention also includes：
Step 15, the base station is coordinated with adjacent base station, described for the same scheduling subframe moment
The subframe that base station is configured using identical protection interval with adjacent base station or configured comprising identical protection interval
Configuration.
Preferably, the step 15 can further comprise：
Step 151, coordinated by inter-base station interface or privately owned signaling and the adjacent base station of the base station,
For the same scheduling subframe moment, the base station configured with adjacent base station using identical protection interval or comprising
The sub-frame configuration of identical protection interval configuration information.
Further, the step 151 may include：
Step 1511, same sub-clustering is dispatched in the base station with adjacent base station within the same scheduling subframe moment
One or more terminals so that the base station uses identical with adjacent base station at the same scheduling subframe moment
Protection interval configuration or include identical protection interval configuration sub-frame configuration.
For example, as shown in figure 3, base station 1, base station 2, base station 3 is in the first scheduling subframe using identical
Protection interval length configuration, such as configuration a, wherein a be 250 μ s, Cell Edge User is scheduled；
Here Cell Edge User is the terminal 1 being connected in Fig. 3 with base station 1, the terminal 2 being connected with base station 2,
The terminal 3 being connected with base station 3.
Base station 1, base station 2, base station 3 is configured in the second scheduling subframe using identical protection interval length,
C is such as configured, wherein c is 15 μ s, and Cell Center User is scheduled；Here Cell Center User
For the terminal 4 being connected with base station 1 in Fig. 3, the terminal 5 being connected with base station 2 is connected with base station 3
Terminal 6.
It is, as shown in figure 4, base station 1, base station 2, base station 3 uses phase in the first scheduling subframe
Same protection interval length configures or included the sub-frame configuration that identical protection interval length is configured, with reference to Fig. 3
Namely Cell Edge User is scheduled；
Base station 1, base station 2, base station 3 is configured in the second scheduling subframe using identical protection interval length
Or the sub-frame configuration configured comprising identical protection interval length, with reference to Fig. 3 namely to Cell Center User
It is scheduled.
It should be noted that, as shown in figure 4, in the subframe configuration information comprising protection interval length configuration information
Including：Sub-frame of uplink UL, descending sub frame DL and between sub-frame of uplink UL and descending sub frame DL
Protection interval GP.
Further, step 151 may also include described in the embodiment of the present invention：
Step 1512, when the base station with adjacent base station within the same scheduling subframe moment can not dispatch same
During the terminal of sub-clustering, the base station uses scheduled end with adjacent base station at the same scheduling subframe moment
The corresponding maximum protection interval configuration of multiple sub-clusterings belonging to end.
Explanation is needed exist for, if all users are institute in Cell Center User, base station 2 in base station 1
Useful is per family Cell Edge User, then can not dispatch the terminal of same sub-clustering within the same scheduling subframe moment,
Relatively conservative protection interval configuration mode can be then used uniformly, to avoid the uplink and downlink timeslot between base station from doing
Disturb.
Here, conservative protection interval configuration mode protection interval length uses scheduled end i.e. relatively
The corresponding maximum protection interval configuration of multiple sub-clusterings belonging to end, so avoids interference problem.
The method that the protection interval of the embodiment of the present invention is set, may also include：
Step 16, according to the ratio of terminating traffic in each cluster, the corresponding protection of the different clusters of adjustment
The ratio that interval configuration information or subframe configuration information comprising protection interval configuration information occur.
If, can it should be noted that terminating traffic is far longer than the portfolio of terminal in cluster two in cluster one
In some continuous scheduling subframes, according to the ratio of portfolio, adjust the corresponding protection interval of different sub-clusterings or
The ratio that sub-frame configuration occurs.
For example, the total traffic of terminal is 500MB in cluster one, corresponding protection interval length configuration
For A, the total traffic of terminal is 100MB in cluster two, and corresponding protection interval length is configured to B,
Here, the total traffic ratio of terminal is 1 in the total traffic and cluster two of terminal in cluster one:5；
The protection interval of 10 scheduling subframes therein can then be configured in continuous 12 scheduling subframes
For A, the protection interval of remaining 2 scheduling subframes is configured to B, dispatched in above-mentioned 10 scheduling subframes
Terminal in scheduling cluster two in terminal in cluster one, remaining 2 scheduling subframes.
If it should be noted that disposing base station without carrying out a subframe of standing in the embodiment of the present invention in isolated island mode
Configuration is coordinated.
The method that the protection interval of the embodiment of the present invention is set, by base station according to the propagation delay with terminal or
Distance, sub-clustering processing is carried out to terminal, so that the flexible configuration to protection interval length is realized, effectively reduction
Risk of interferences between being stood in overhead and system, while reducing round-trip delay, improves Consumer's Experience.
Second embodiment
As shown in Fig. 2 the embodiment of the present invention also provides the device that a kind of protection interval is set, including：
Acquisition module 21, the multiple terminals and the propagation delay of the base station being connected for acquisition with base station,
The one or more of Timing Advance or distance；
Sub-clustering module 22, for the one or more according to the propagation delay, Timing Advance or distance
The multiple terminal is subjected to sub-clustering, at least one cluster is obtained, wherein including at least one terminal in each cluster；
Setup module 23, for according to the corresponding most long propagation delay time of the terminal in each cluster or maximum time
Lead or maximum distance, set the protection interval configuration information of the corresponding scheduling subframe of each cluster；
It should be noted that in acquisition module of the embodiment of the present invention 21, base station can be by being connected with base station
What location information, uplink reference symbol power, accidental access signal power or the terminal of multiple terminals were reported
Propagation delay or apart from etc. determine the propagation delay or Timing Advance or distance of multiple terminals and base station.
Sub-clustering module described in the embodiment of the present invention 22 may particularly include：
Submodule is handled, for the remote of the length to the propagation delay, the size of Timing Advance or distance
Near one or more sequence processing for carrying out ascending order or descending, obtain ranking results；
Sub-clustering submodule, for carrying out sub-clustering to the multiple terminal according to the ranking results, is obtained at least
One cluster.
Specifically, at least one terminal is included in each cluster.
Here, base station can be according to the propagation delay or Timing Advance of the terminal for the multiple terminals being connected with base station
Or distance, sub-clustering processing is carried out to terminal.
Method one：
For example, base station and terminal A distance are 30km, the distance with terminal B is 20km, with terminal
C distance is 3km, and the distance with terminal D is 2km, and the distance with terminal E is 300m, with terminal
F distance is 200m；
Then whether base station, according to multiple terminals and the distance of base station, is the same order of magnitude according to the distance of distance,
Terminal A and terminal B are configured to cluster one, terminal C and terminal D are configured to cluster two, by terminal E and
Terminal F is configured to cluster three.
Method two
In addition, base station can also further combined with base station maximal cover radius or the maximal cover radius pair of base station
The maximum allowable propagation delay time answered, and the optional protection interval configuration information of system, by what is be connected with base station
Multiple terminals carry out sub-clustering.
For example, base station maximal cover radius is 30km, the distance with terminal A is 30km, with terminal B
Distance be 20km, be 3km with terminal C distance, the distance with terminal D is 2km, with terminal E
Distance be 300m, be 200m with terminal F distance；
Then whether base station, according to multiple terminals and the distance of base station, is the same order of magnitude according to the distance of distance,
Terminal A and terminal B are configured to cluster one, terminal C and terminal D are configured to cluster two, by terminal E and
Terminal F is configured to cluster three.
Further, base station to terminal when carrying out sub-clustering, in addition it is also necessary to considers in the configuration of optional protection interval
In, there is some configuration to meet the Minimal Protective space requirements of multiple terminals in cluster.For example, can use as follows
Formula calculates Minimal Protective space requirements in cluster.
Minimal Protective interval=2 × (terminal ultimate range/light velocity in cluster)+equipment processing delay in cluster
The Minimal Protective of cluster one is at intervals of 210us；The Minimal Protective of cluster two is at intervals of 30us；The minimum of cluster three
Protection interval is 12us.
Optional protection interval is configured to：Configuration a is 250 μ s；Configuration b is 40 μ s；It is 15 to configure c
μs；
Cluster one can arrangement a, cluster two can arrangement b, cluster three can arrangement c.Sub-clustering result meets optional
Protection interval configuration restriction.
Certainly, it is only for some examples, base station also can be according to above-mentioned other sub-clustering modes to multiple terminals
Carry out sub-clustering.
Setup module 23 described in the embodiment of the present invention may particularly include：
First acquisition submodule, for according to the ranking results, the terminal obtained in each cluster to be corresponding most
The one or more of long propagation delay time, maximum time lead or maximum distance；
Second acquisition submodule, for obtaining local optional protection interval configuration information；
Submodule is set, for most long propagation delay time or maximum time lead or maximum distance according to
One or more and described optional protection interval configuration information, sets corresponding scheduling subframe in each cluster
Protection interval length configuration information.
Need exist for explanation, for GSM, usual 1 TTI (Transmission
TimeInterval, Transmission Time Interval) it is 1 subframe.
Here, by taking the method one in the citing in above-mentioned sub-clustering module 22 as an example,
Base station is according to the maximum transmitted time delay or maximum duration lead of multiple terminals in each sub-clustering or farthest
Minimal Protective interval needed for distance calculating.For example, between Minimal Protective needed for being calculated using equation below in cluster
Every.
Minimal Protective interval=2 × (terminal ultimate range/light velocity in cluster)+equipment processing delay in cluster
The terminal ultimate range of cluster one is 30km, it is assumed that equipment processing delay is 10us, then cluster one is minimum protects
Shield is at intervals of 210us；The terminal ultimate range of cluster two is 3km, it is assumed that equipment processing delay is 10us, then
The Minimal Protective of cluster two is at intervals of 30us；The terminal ultimate range of cluster three is 300m, it is assumed that during equipment processing
Prolong as 10us, then the Minimal Protective of cluster three is at intervals of 12us.
The protection interval of cluster one can be then configured to 210us, the protection interval of cluster two is configured to 30us, cluster three
Protection interval be configured to 12us.
In addition it is also possible to exemplified by method two in citing in above-mentioned steps 12,
The protection interval length of the scheduling subframe of cluster one is matched somebody with somebody according to optional protection interval configuration information base station
A is set to, wherein a is 250 μ s；The protection interval length of the scheduling subframe of cluster two is configured to b, wherein
B is 40 μ s；The protection interval length of the scheduling subframe of cluster three is configured to c, wherein c is 15 μ s.
Further, the acquisition submodule may also include：
Comparison judgment unit, length for the corresponding propagation delay time of terminal in each cluster of multilevel iudge, when
Between lead size or the far and near one or more of distance；
Determining unit, for determining that the corresponding most long propagation delay time of the terminal in each cluster, maximum time shift to an earlier date
The one or more of amount or maximum distance.
The device that protection interval described in the embodiment of the present invention is set also may particularly include：
Configuration information issues module 24, for the base station in BCCH or CCCH
Issue the protection interval configuration information of current scheduling subframe or follow-up scheduling subframe or configured comprising protection interval
The subframe configuration information of information.
The device that protection interval described in the embodiment of the present invention is set also may particularly include：
Coordination module 25, is coordinated for the base station and adjacent base station, during for same scheduling subframe
Carve, the base station is configured using identical protection interval with adjacent base station or configured comprising identical protection interval
Sub-frame configuration.
More specifically, the Coordination module 25 may also include：
Coordinate submodule, for being carried out by inter-base station interface or privately owned signaling and the adjacent base station of the base station
Coordinate, for the same scheduling subframe moment, the base station is configured with adjacent base station using identical protection interval
Or the sub-frame configuration configured comprising identical protection interval.
Again specifically, the coordination submodule may also include：
First coordination unit, within the same scheduling subframe moment dispatches same for the base station with adjacent base station
One or more terminals of sub-clustering so that adopted with adjacent base station at the same scheduling subframe moment base station
The sub-frame configuration for being configured or being configured comprising identical protection interval with identical protection interval.
For example, as shown in figure 3, base station 1, base station 2, base station 3 is in the first scheduling subframe using identical
Protection interval length configuration, such as configuration a, wherein a be 250 μ s, Cell Edge User is scheduled；
Here Cell Edge User is the terminal 1 being connected in Fig. 3 with base station 1, the terminal 2 being connected with base station 2,
The terminal 3 being connected with base station 3.
Base station 1, base station 2, base station 3 is configured in scheduling subframe using identical protection interval length, such as
C is configured, wherein c is 15 μ s, and Cell Center User is scheduled；Here Cell Center User is
The terminal 4 being connected with base station 1 in Fig. 3, the terminal 5 being connected with base station 2, the end being connected with base station 3
End 6.
It is, as shown in figure 4, base station 1, base station 2, base station 3 uses phase in the first scheduling subframe
With protection interval length configuration or include identical protection interval length configuration sub-frame configuration, with reference to Fig. 3
Namely Cell Edge User is scheduled；
Base station 1, base station 2, base station 3 is configured in the second scheduling subframe using identical protection interval length
Or the sub-frame configuration configured comprising identical protection interval length, with reference to Fig. 3 namely to Cell Center User
It is scheduled.
It should be noted that, as shown in figure 4, in the subframe configuration information comprising protection interval length configuration information
Including：Sub-frame of uplink UL, descending sub frame DL and between sub-frame of uplink UL and descending sub frame DL
Protection interval GP.
Again specifically, the coordination submodule may also include：
Second coordination unit, for that can not be adjusted within the same scheduling subframe moment with adjacent base station when the base station
When spending the terminal of same sub-clustering, the base station uses at the same scheduling subframe moment with adjacent base station and adjusted
The corresponding maximum protection interval configuration of multiple sub-clusterings belonging to the terminal of degree.
Explanation is needed exist for, if all users are institute in Cell Center User, base station 2 in base station 1
Useful is per family Cell Edge User, then can not dispatch the terminal of same sub-clustering within the same scheduling subframe moment,
Relatively conservative protection interval configuration mode can be then used uniformly, to avoid the uplink and downlink timeslot between base station from doing
Disturb.
Here, conservative protection interval configuration mode protection interval length uses scheduled end i.e. relatively
The corresponding maximum protection interval configuration of multiple sub-clusterings belonging to end, so avoids interference problem.
The device that the protection interval of the embodiment of the present invention is set, may also include：
Adjusting module 26, for the ratio according to terminating traffic in each cluster, adjusts different clusters corresponding
The ratio that the protection interval configuration information or subframe configuration information comprising protection interval configuration information occur.
If, can it should be noted that terminating traffic is far longer than the portfolio of terminal in cluster two in cluster one
In some continuous scheduling subframes, according to the ratio of portfolio, adjust the corresponding protection interval of different sub-clusterings or
The ratio that sub-frame configuration occurs.
For example, the total traffic of terminal is 500MB in cluster one, corresponding protection interval length configuration
For A, the total traffic of terminal is 100MB in cluster two, and corresponding protection interval length is configured to B,
Here, the total traffic ratio of terminal is 1 in the total traffic and cluster two of terminal in cluster one:5；
The protection interval of 10 scheduling subframes therein can then be configured in continuous 12 scheduling subframes
For A, the protection interval of remaining 2 scheduling subframes is configured to B, dispatched in above-mentioned 10 scheduling subframes
Terminal in scheduling cluster two in terminal in cluster one, remaining 2 scheduling subframes.
If it should be noted that disposing base station without carrying out a subframe of standing in the embodiment of the present invention in isolated island mode
Configuration is coordinated.
The device that the protection interval of the embodiment of the present invention is set, by base station according to the propagation delay with terminal or
Timing Advance or distance, sub-clustering processing is carried out to terminal, so as to realize flexibly matching somebody with somebody to protection interval length
Put, risk of interferences between effectively being stood in reduction overhead and system, while reducing round-trip delay, is improved and used
Experience at family.
The embodiment of the present invention also provides a kind of base station, including the protection interval as described in above-mentioned second embodiment
The device of setting.
Described above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (21)
1. a kind of method that protection interval is set, it is characterised in that including：
Obtain propagation delay, Timing Advance or the distance of the multiple terminals and base station being connected with base station
It is one or more；
The multiple terminal is carried out according to the one or more of the propagation delay, Timing Advance or distance
Sub-clustering, obtains at least one cluster, wherein including at least one terminal in each cluster；
According to the corresponding most long propagation delay time of the terminal in each cluster or maximum time lead or maximum distance,
The protection interval configuration information of the corresponding scheduling subframe of each cluster is set.
2. the method that protection interval according to claim 1 is set, it is characterised in that the basis
The propagation delay, Timing Advance or the one or more of distance carry out sub-clustering to the multiple terminal, obtain
To at least one cluster, including：
The size of length, Timing Advance to the propagation delay or the far and near one or more of distance are entered
The sequence processing of row ascending order or descending, obtains ranking results；
Sub-clustering is carried out to the multiple terminal according to the ranking results, at least one cluster is obtained.
3. the method that protection interval according to claim 2 is set, it is characterised in that the basis
One kind or many of the corresponding most long propagation delay time of terminal, maximum time lead or maximum distance in each cluster
Kind, the protection interval configuration information of the corresponding scheduling subframe of each cluster is set, including：
According to the ranking results, the corresponding most long propagation delay time of terminal in each cluster, maximum time are obtained
The one or more of lead or maximum distance；
Obtain local optional protection interval configuration information；
According to one or more and the institute of the most long propagation delay time, maximum time lead or maximum distance
Optional protection interval configuration information is stated, sets the protection interval length of corresponding scheduling subframe in each cluster to match somebody with somebody
Confidence ceases.
4. the method that protection interval according to claim 3 is set, it is characterised in that the acquisition
One kind or many of the corresponding most long propagation delay time of terminal, maximum time lead or maximum distance in each cluster
Kind, including：
The length of the corresponding propagation delay time of terminal in each cluster of multilevel iudge, the size of Timing Advance or away from
From far and near one or more；
It is determined that the corresponding most long propagation delay time of terminal, maximum time lead or maximum distance in each cluster
It is one or more.
5. the method that protection interval according to claim 1 is set, it is characterised in that also include：
The base station issues current scheduling subframe or follow-up scheduling sublayer in broadcast channel or CCCH
The protection interval configuration information of frame or the subframe configuration information for including protection interval configuration information.
6. the method that protection interval according to claim 1 is set, it is characterised in that also include：
The base station is coordinated with adjacent base station, for the same scheduling subframe moment, the base station and adjacent base station
The sub-frame configuration for being configured or being configured comprising identical protection interval using identical protection interval.
7. the method that protection interval according to claim 6 is set, it is characterised in that the base station
Coordinated with adjacent base station, for the same scheduling subframe moment, the base station is with adjacent base station using identical
Protection interval configuration or include identical protection interval configuration sub-frame configuration, including：
Coordinated by inter-base station interface or privately owned signaling and the adjacent base station of the base station, adjusted for same
The subframe moment is spent, the base station is configured using identical protection interval with adjacent base station or protected comprising identical
It is spaced the sub-frame configuration of configuration.
8. the method that protection interval according to claim 7 is set, it is characterised in that the base station
Coordinated with adjacent base station, including：
The one or more of same sub-clustering are dispatched within the same scheduling subframe moment in the base station with adjacent base station
Terminal so that the base station uses identical protection interval with adjacent base station at the same scheduling subframe moment
Configuration or the sub-frame configuration configured comprising identical protection interval.
9. the method that protection interval according to claim 7 is set, it is characterised in that the base station
Coordinated with adjacent base station, in addition to：
When the base station and adjacent base station can not dispatch the terminal of same sub-clustering within the same scheduling subframe moment
When, the base station is with adjacent base station at the same scheduling subframe moment using many belonging to scheduled terminal
The corresponding maximum protection interval configuration of individual sub-clustering.
10. the method that protection interval according to claim 1 is set, it is characterised in that methods described
Also include：
According to the ratio of terminating traffic in each cluster, the corresponding protection interval of the different clusters of adjustment matches somebody with somebody confidence
The ratio that breath or subframe configuration information comprising protection interval configuration information occur.
11. the device that a kind of protection interval is set, it is characterised in that including：
Acquisition module, propagation delay, time for obtaining the multiple terminals being connected with base station and the base station
The one or more of lead or distance；
Sub-clustering module, for according to the one or more by institute of the propagation delay, Timing Advance or distance
State multiple terminals and carry out sub-clustering, obtain at least one cluster, wherein including at least one terminal in each cluster；
Setup module, for being shifted to an earlier date according to the corresponding most long propagation delay time of the terminal in each cluster or maximum time
Amount or maximum distance, set the protection interval configuration information of the corresponding scheduling subframe of each cluster.
12. the device that protection interval according to claim 11 is set, it is characterised in that described point
Cluster module includes：
Submodule is handled, for the remote of the length to the propagation delay, the size of Timing Advance or distance
Near one or more sequence processing for carrying out ascending order or descending, obtain ranking results；
Sub-clustering submodule, for carrying out sub-clustering to the multiple terminal according to the ranking results, is obtained at least
One cluster.
13. the device that protection interval according to claim 12 is set, it is characterised in that described to set
Putting module includes：
First acquisition submodule, for according to the ranking results, the terminal obtained in each cluster to be corresponding most
The one or more of long propagation delay time, maximum time lead or maximum distance；
Second acquisition submodule, for obtaining local optional protection interval configuration information；
Submodule is set, for most long propagation delay time, maximum time lead or maximum distance according to
One or more and described optional protection interval configuration information, sets corresponding scheduling subframe in each cluster
Protection interval length configuration information.
14. the device that protection interval according to claim 13 is set, it is characterised in that described to obtain
Submodule is taken to include：
Comparison judgment unit, length for the corresponding propagation delay time of terminal in each cluster of multilevel iudge, when
Between lead size or the far and near one or more of distance；
Determining unit, for determining that the corresponding most long propagation delay time of the terminal in each cluster, maximum time shift to an earlier date
The one or more of amount or maximum distance.
15. the device that protection interval according to claim 11 is set, it is characterised in that also include：
Configuration information issues module, is issued for the base station in BCCH or CCCH
The protection interval configuration information of current scheduling subframe or follow-up scheduling subframe includes protection interval configuration information
Subframe configuration information.
16. the device that protection interval according to claim 11 is set, it is characterised in that the dress
Putting also includes：
Coordination module, is coordinated for the base station and adjacent base station, for the same scheduling subframe moment,
The base station is configured with adjacent base station using identical protection interval or comprising the configuration of identical protection interval
Sub-frame configuration.
17. the device that protection interval according to claim 16 is set, it is characterised in that the association
Mode transfer block includes：
Coordinate submodule, for being carried out by inter-base station interface or privately owned signaling and the adjacent base station of the base station
Coordinate, for the same scheduling subframe moment, the base station is configured with adjacent base station using identical protection interval
Or the sub-frame configuration configured comprising identical protection interval.
18. the device that protection interval according to claim 17 is set, it is characterised in that the association
Tune module includes：
First coordination unit, within the same scheduling subframe moment dispatches same for the base station with adjacent base station
One or more terminals of sub-clustering so that adopted with adjacent base station at the same scheduling subframe moment base station
The sub-frame configuration for being configured or being configured comprising identical protection interval with identical protection interval.
19. the device that protection interval according to claim 17 is set, it is characterised in that the association
Tune module also includes：
Second coordination unit, for that can not be adjusted within the same scheduling subframe moment with adjacent base station when the base station
When spending the terminal of same sub-clustering, the base station uses at the same scheduling subframe moment with adjacent base station and adjusted
The corresponding maximum protection interval configuration of multiple sub-clusterings belonging to the terminal of degree.
20. the device that protection interval according to claim 11 is set, it is characterised in that the dress
Putting also includes：
Adjusting module, for the ratio according to terminating traffic in each cluster, adjusts different clusters corresponding described
The ratio that protection interval configuration information or subframe configuration information comprising protection interval configuration information occur.
21. a kind of base station, it is characterised in that including：Protection interval as described in claim 11-20 is set
The device put.
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