CN105553605A - Communication method, system, base station, and terminal - Google Patents
Communication method, system, base station, and terminal Download PDFInfo
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Abstract
The invention, which relates to the wireless communication field, discloses a communication method, system, base station, and terminal. According to the embodiment of the invention, downlink frequency bands of a group of symmetric frequency spectrums are set to be in a total downlink data sending direction and uplink frequency bands are set to be in an uplink-downlink-mixed data sending direction, so that parts of downlink data can be sent at the uplink frequency band. Therefore, the uplink spectrum resources can be fully utilized and the demand of inconsistent uplink rate and downlink rate of services in a network can be satisfied.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of communication means, system and base station and terminal.
Background technology
In network, the up-downgoing speed of business presents asymmetric situation usually, according to adding up the up-downgoing speed ratio of most Internet service greatly between 1/3 ~ 1/9, and if uplink downlink in ADSL (AsymmetricDigitalSubscriberLine, Asymmetrical Digital Subscriber Line) technology is also adopt different bandwidth to provide service for user in cable network.For wireless network, particularly FDD (FrequencyDivisionDuplex, Frequency Division Duplexing (FDD)) technology, need the frequency spectrum resource of one group of symmetry, and upstream and downstream bandwidth adopts formed objects usually, but in real network, be limited to the characteristic of business, usually cause up frequency spectrum resource to be fully utilized.The target of following wireless network comprises the service effectively utilizing existing frequency resource, provide higher rate.Therefore, the slack resources how effectively utilized in upstream bandwidth is the focus of current research.
Summary of the invention
An embodiment of the present invention technical problem to be solved is: how to effectively utilize the slack resources in upstream bandwidth.
According to an aspect of the embodiment of the present invention, a kind of communication means provided, comprising: base station the band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, uplink band is set to up-downgoing mixing data receiver to; The ascending-descending subframes configuration information of base station broadcast uplink band, the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point; Base station receives the ability information of the terminal to report supporting flexible duplex capability, ability information is kept in the contextual information of this terminal; The control channel of band downlink is passed through to supporting that the terminal of flexible duplex capability sends the descending control indication information of downlink data transmission in uplink band in base station according to the ability information of terminal, so that this terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range; Wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond.
According to another aspect of the embodiment of the present invention, a kind of communication means provided, comprising: if terminal supports flexible duplex capability, then report its ability information to base station; Terminal receives the ascending-descending subframes configuration information of uplink band in one group of symmetrical spectrum of base station transmission, the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point, wherein, in this group symmetrical spectrum band downlink be entirely descending data receiver to; Terminal receives the descending control indication information of downlink data transmission in the uplink band of base station transmission by the control channel of band downlink; Terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range; Wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond.
According to another aspect of the embodiment of the present invention, the base station of a kind of communication provided, comprise: configuration module, for the band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, uplink band is set to up-downgoing mixing data receiver to; Broadcast module, for the ascending-descending subframes configuration information of broadcast upstream frequency range, the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point; Wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond; Terminal capability acquisition module, for receiving the ability information of the terminal to report supporting flexible duplex capability, is kept at ability information in the contextual information of this terminal; Indicating module, for passing through the control channel of band downlink according to the ability information of terminal to supporting that the terminal of flexible duplex capability sends the descending control indication information of downlink data transmission in uplink band, so that this terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range.
According to another aspect of the embodiment of the present invention, the terminal of a kind of communication provided, comprising: capability reporting module, if for supporting flexible duplex capability, then report its ability information to base station; Configuration receiver module; for receiving the ascending-descending subframes configuration information of uplink band in one group of symmetrical spectrum that base station sends; the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point; wherein; in this group symmetrical spectrum band downlink be entirely descending data receiver to; wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond; Control instruction receiver module, for being received the descending control indication information of downlink data transmission in the uplink band of base station transmission by the control channel of band downlink; Data reception module, for receiving the downlink data that the descending sub frame of base station in uplink band sends according to the ascending-descending subframes configuration information of this descending control indication information and this cell uplink frequency range.
According to another aspect of the embodiment of the present invention, a kind of communication system provided, comprising: aforementioned base station and aforementioned terminals.
The embodiment of the present invention band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, and uplink band is set to up-downgoing mixing data receiver to, part downlink data can be sent at uplink band, thus make full use of uplink frequency spectrum resource, meet the demand that the up-downgoing speed of business in network is inconsistent.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the communication means embodiment schematic flow sheet that the present invention is based on flexible duplex technology.
Fig. 2 is the subframe structure schematic diagram of the uplink band configuring 0 ~ 4 correspondence in the embodiment of the present invention.
Fig. 3 is the schematic network structure of the flexible duplexing networking of the present invention.
Fig. 4 is the upstream scheduling process of the sub-frame configuration of uplink band of the present invention when changing.
Fig. 5 is the structural representation of the unified embodiment of communication system of the present invention.
Fig. 6 is the structural representation of the embodiment in base station that the present invention communicates.
Fig. 7 is the structural representation of another embodiment of base station that the present invention communicates.
Fig. 8 is the structural representation of another embodiment of base station that the present invention communicates.
Fig. 9 is the structural representation of the terminal embodiment that the present invention communicates.
Figure 10 is the structural representation of another embodiment of terminal that the present invention communicates.
Figure 11 is the structural representation of another embodiment of terminal that the present invention communicates.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The problem causing uplink frequency spectrum resource to make full use of in order to the up-downgoing demand rate solving business in network is inconsistent, the embodiment of the present invention proposes a kind of " flexibly duplex " technology, band downlink by one group of symmetrical spectrum be set to entirely descending data receiver to, and the uplink band of this group symmetrical spectrum is set to up-downgoing mixing data receiver to, the self adaptation of " flexibly duplex " technical support business, part downlink data can be sent at uplink band, thus make full use of uplink frequency spectrum resource, meet the demand that the up-downgoing speed of business in network is inconsistent.
Fig. 1 is the schematic flow sheet of the communication means embodiment that the present invention is based on flexible duplex technology.With reference to figure 1, the communication means of the present embodiment comprises the following steps:
Step S102, base station the band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, uplink band is set to up-downgoing mixing data receiver to.
Wherein, because FDD technology has the frequency spectrum resource of one group of symmetry, therefore, the communication means based on flexible duplex technology of the present embodiment can be applied in FDD network environment.
Step S104, the ascending-descending subframes configuration information of base station broadcast uplink band, wherein, the ascending-descending subframes configuration information of uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point.
For the ascending-descending subframes allocation problem of uplink band, due to current TD-LTE (TimeDivisionLongTermEvolution, timesharing Long Term Evolution) frame structure in descending sub frame more, if directly application or use for reference the uplink band of FDD, upstream rate can be caused limited.Therefore, the present embodiment proposes the ascending-descending subframes collocation method that a kind of FDD of being applicable to etc. has the uplink band of symmetrical spectrum, can make full use of uplink spectrum, upstream rate also can not be made limited.Wherein, the ascending-descending subframes percent information of uplink band can be the form of allocation list, and the ascending-descending subframes structural allocation table of uplink band is as shown in table 1:
The ascending-descending subframes structural allocation table of table 1 uplink band
Wherein, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond.The ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, when subframe is configured to 0 ~ 4, incompatibility is enabled (now, do not support that the terminal of flexible duplex capability cannot be linked into this community), when subframe is configured to 5, incompatibility invalid (now, not supporting that the terminal of flexible duplex capability also can be linked into this community).The ascending-descending subframes configuration information of uplink band is only just effective when incompatibility is enabled.
Wherein, the descending sub frame sending upstream data is needed after descending and up transfer point refers to downlink data transmission.In the present embodiment, the descending sub frame that descending and up transfer point is corresponding contains two parts in time domain, and a part is tcp data segment, and another one part is protection interval.The protection interval configuration information of the descending and up transfer point of uplink band such as comprises: the ratio at the tcp data segment in the descending sub frame that descending and up transfer point is corresponding and protection interval, this percent information can be configured in the broadcast by base station.Wherein, tcp data segment is used for transmission user exclusive data (as user service data), does not comprise control channel and broadcast channel, and is not used for transmitting high-level signaling.Wherein, do not receive in protection interval or send any data.The protection interval plan of establishment of the present embodiment can make the available transmission time maximize, and improves the efficiency of frequency spectrum.
Fig. 2 illustrates the subframe structure schematic diagram of the uplink band configuring 0 ~ 4 correspondence in the embodiment of the present invention.Wherein, D represents descending sub frame, and U represents sub-frame of uplink, and GAP represents protection interval.For the ease of implementing, the duration of each subframe can be identical.
In step S104, non-compatible information can also be broadcasted in base station simultaneously, and non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility.
If terminal does not support flexible duplex capability, after finding that incompatibility is enabled in base station, if be Idle state at present, carry out cell reselection, and in the term of validity Nei Jianggai community of incompatibility as the Target cell of forbidding accessing.
If the flexible duplex capability of terminal support, terminal reports its ability information to base station, for the support situation of this terminal of informing network to flexible duplex capability, and after incompatibility is enabled in discovery base station, resolve the ascending-descending subframes configuration information of the uplink band sent in broadcast further.Wherein, the ability information of terminal to report such as comprises: whether support flexible duplex capability, support the frequency range numbering of duplex flexibly.
When the ascending-descending subframes configuration of the uplink band of base station changes, base station upgrades self broadcast, and notifies activated state terminal by high-level signaling (as radio resource control RRC message) and by page notification Idle state terminal.If broadcast upgrades and non-compatible information is enabled (namely base station is switched to 0 ~ 4 any one configuration from configuration 5) not support the Idle state terminal of duplex flexibly to find, then perform cell reselection immediately.For the activated state terminal not supporting duplex flexibly, if find, broadcast upgrades and non-compatible information is enabled, and base station utilizes high-level signaling indicating terminal to carry out the release eating dishes without rice or wine to connect, and relevant gravity treatment configuration information is indicated to terminal.Base station and terminal are all according to the new configuration of time point application of agreement, when next moment subsequent subframe is about to apply new configuration information, if find that the re-transmission subframe of terminal cannot find the position of re-transmission according to old HARQ sequential relationship in uplink process, then terminal abandons this re-transmission, wait for the scheduling instruction of base station, and to be terminal reschedule in base station data retransmission transmission subframe numbers.
Step S106, base station receives the ability information of the terminal to report supporting flexible duplex capability, ability information is kept in the contextual information of this terminal.
Step S108, the control channel of band downlink is passed through to supporting that the terminal of flexible duplex capability sends the descending control indication information of downlink data transmission in uplink band in base station according to the ability information of terminal.
Wherein, for the scheduling problem of descending sub frame in uplink band, take and utilize the control channel in band downlink to carry out the mode of dispatching, if this is because the descending sub frame in uplink band still continues to use traditional mentality of designing, wherein control channel must be comprised, can reduce spectrum efficiency like this, and the interference feature of interference feature in uplink band and traditional down direction has very large difference, traditional control channel performance differs and meets design requirement surely.And, the scheme utilizing carrier wave indicating bit (CIF) to distinguish carrier wave in traditional carrier aggregation cannot continue to be suitable for, therefore, the embodiment of the present invention also introduce new identifier with distinguish in carrier aggregation across carrier dispatching, thus have effectively achieved the resources control for uplink band.Wherein, in uplink band, the descending control indication information of downlink data transmission comprises following content:
1) whether Resource Block belongs to uplink band, and this information is only effective to downlink transfer;
2) position of Resource Block and size;
3) the process number numbering of current use, when specifically implementing, such as up direction can arrange 3bit, and down direction can arrange 4bit;
4) modulation system on Resource Block and HARQ (HybridAutomaticRepeatRequest, hybrid automatic repeat-request) redundancy versions.
Step S110, terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range.
In the communication means based on flexible duplex technology, when causing data not to be correctly received for a certain reason, then also needing the other side's data retransmission, usually can adopt HARQ technology.For on the timing relationship of HARQ, the feedback sequential relationship of flexible duplex technology, all different with current TDD and FDD from subframe structure, from up HARQ, within the set time, a descending sub frame can be found with TD-LTE on band downlink to carry out ACK (confirmation)/NACK (non-acknowledgement) unlike it to feed back, with FDD unlike not necessarily sub-frame of uplink in the 4th subframe after feeding back at NACK/ACK.From descending HARQ, with FDD unlike not necessarily sub-frame of uplink in the 4th subframe after just passing, thus may not be certain there is ACK/NACK feedback time point.Therefore the HARQ sequential relationship of duplex technology needs to redesign flexibly, illustrates below.
Base station and terminal carry out the re-transmission of upstream data according to the HARQ strategy of up direction; Base station and terminal carry out the transmission of downlink data according to the HARQ strategy of down direction.
Wherein, the HARQ strategy of up direction comprises: the uplink of base station to terminal is dispatched, nearest sub-frame of uplink after 3 subframes of terminal after receiving the scheduling result of uplink sends data, base station is feeding back ACK/nack message in the n-th subframe, if need to retransmit terminal to retransmit in the n-th+Kre subframe, wherein during employing configuration 5, Kre equals 4, and during employing configuration 0 ~ 4, Kre value is as shown in table 2:
ACK/NACK and the relation table retransmitting time point in table 2 uplink process
| Configuration | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 0 | 6 | 6 | 6 | 6 | 6 | 6 | ||||
| 1 | 6 | 6 | 6 | 6 | ||||||
| 2 | 4 | 5 | 5 | 4 | 5 | 5 | 5 | |||
| 3 | 6 | 6 | 6 | 6 | 6 | |||||
| 4 | 4 | 5 | 5 | 4 | 5 | 5 | 5 |
Wherein, the HARQ strategy of downlink transfer comprises: base station sends data in the n-th subframe, and terminal is feeding back ACK/nack message in the n-th+K subframe, and when base station adopts configuration 5, K equals 4, and during employing configuration 0 ~ 4, K value is as shown in table 3:
The relation table with ACK/NACK subframe is just passed in table 3 downlink transmission process
| Configuration | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 0 | 4 | 6 | 5 | 5 | 4 | 4 | 6 | 5 | 4 | 4 |
| 1 | 7 | 6 | 5 | 5 | 4 | 7 | 6 | 5 | 5 | 4 |
| 2 | 4 | 5 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 |
| 3 | 4 | 6 | 5 | 4 | 4 | 7 | 6 | 5 | 4 | 4 |
| 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 |
The present embodiment has redesigned a kind of HARQ sequential relationship being applicable to flexible duplex technology, and the HARQ sequential relationship of the present invention's design achieves minimizing of the sub-frame number of RTT (round-trip transmission time) time of transmission and the ACK/NACK binding of up direction.
In order to make the solution of the present invention clearly, enumerate some application examples below.
Application example 1
The present embodiment mainly describes one and supports that the LTE-A terminal UE of duplex is flexibly after access LTE-A network, the scheduling of up-downlink direction and HARQ procedure.As shown in Figure 3, the frequency range wherein configured in base station eNB is the frequency range of a LTEFDD to the network structure of flexible duplexing networking.The hypothesis taked in uplink band is configuration 0, and devise 4 kinds of configurations altogether for protection interval hypothesis, adopt 2bit to represent, current base station is 12:2 in the ascending-descending subframes ratio that uplink band is taked, for configuring 0.
Step 1: base station broadcasts following information in broadcast:
non-compatible information: 1 (incompatibility is enabled in expression)
the non-compatible term of validity: 30 minutes
the uplink-downlink configuration of uplink band: 000 (representing configuration 0)
protection interval configuration: 00 (representing configuration 0)
Step 2: after terminal is linked into network, by NAS (Non-accessstratum, Non-Access Stratum) message indicates it to support flexibly duplex and support duplex flexibly in which frequency range to MME (MobilityManagementEntity, Mobility Management Entity).
Step 3:MME is reported to base station side terminal for the ability information that duplex is supported flexibly by S1AP (S1 Application Protocol) message.
Step 4: base station side receives this terminal for after the ability information that duplex is supported flexibly, is saved in UE context (Context).
Step 5: base station is the resource information of this terminal scheduling uplink band subframe 1.Base station is in the subframe 1 of band downlink, by PDCCH (PhysicalDownlinkControlChannel, Physical Downlink Control Channel) inform user scheduling information, the descending control indication information form adopted can be such as 5, wherein except the information supported in LTE standard, also comprise following information:
whether Resource Block belongs to uplink band: 1 (representing that Resource Block belongs to uplink band)
the position of Resource Block and size
the process number numbering of current use: 0000 (represent Down Procedure number 0)
modulation system on Resource Block and HARQ redundancy versions
Step 6: uplink band corresponding in subframe 1 after terminal receives schedule information receives data, and according to shown in table 3, feeding back ACK/nack message in subframe 7.
Step 7: base station is sometime, and this terminal configuration is transformed into configuration 5 from configuration 0 to utilize RRC information to notify, can comprise following content in RRC information:
non-compatible information: 0
the uplink-downlink configuration of uplink band: 101 (representing configuration 5)
protection interval configuration: 00 (representing configuration 0)
Step 8: after terminal receives this information, revises all after dates at the next one and use new configuration information together with base station side.
Application example 2
The present embodiment mainly describes a flexible duplexing activated state terminal UE 1 is switched to the schedule information after configuration 0 operating process from uplink-downlink configuration 5.As shown in Figure 3, the frequency range wherein configured in base station eNB is the frequency range of a LTEFDD to the network structure of flexible duplexing networking.What take in uplink band is configuration 5, and devise 4 kinds of configurations altogether for protection interval hypothesis, adopt 2bit to represent, current base station is 12:2 in the ascending-descending subframes ratio that uplink band is taked, for configuring 0.
Step 1: base station is according to current service distribution situation, and determine the ascending-descending subframes configuration in adjustment uplink band, therefore base station utilizes RRC information to notify activated state terminal when subframe 0, comprises following content in message:
non-compatible information: 1 (incompatibility is enabled in expression)
the non-compatible term of validity: 30 minutes
the uplink-downlink configuration of uplink band: 000 (representing configuration 0)
protection interval configuration: 00 (representing configuration 0)
Step 2: upstream scheduling process when changing with reference to the sub-frame configuration shown in figure 4, wherein, the subframe 0 ~ subframe 9 of next radio frames is denoted as subframe 10 ~ subframe 19 in the drawings.UE1 is in the first biography of subframe 3 enterprising row data, nack message has been fed back due to decoding error in base station in subframe 7, because after subframe 10, network and terminal all need the new configuration of applying, it is a descending sub frame that terminal finds in the subframe 1 of next radio frames, therefore not data retransmission in subframe 1, waits for that base station side reschedules retransmission information.Terminal needs to monitor follow-up down control channel continuously.
Step 3: the band downlink of base station in subframe 2 utilizes PDCCH indicating terminal to retransmit upstream data in subframe 7.
Application example 3
The present embodiment mainly describes the processing procedure that is not supported the activated state terminal UE 1 of duplex flexibly.As shown in Figure 3, the frequency range wherein configured in base station is the frequency range of a LTEFDD to the network structure of flexible duplexing networking.What take in uplink band is configuration 5, devises 4 kinds of configurations altogether for protection interval, and adopt 2bit to represent, the ratio that current base station is taked is 12:2, for configuring 0.The frequency of base station is Band1, and it is Band3, Band3 with the frequency covered is a convention carrier.Band1 is a carrier wave that can be configured to duplex flexibly.
Step 1: base station is according to current service distribution situation, determine the ascending-descending subframes configuration in adjustment uplink band, base station is according to UE ability, find that UE1 is a terminal not supporting duplex flexibly, therefore send RRC connection release message immediately to UE1, the information of carrying in connection release message comprises:
new frequency point information: Band3
the priority of new frequency: 1
non-compatible information: 1 (enabling incompatibility)
the non-compatible term of validity: 30 minutes
the uplink-downlink configuration of uplink band: 000 (representing configuration 0)
protection interval configuration: 00 (representing configuration 0)
dedicated priority timer length: 180 minutes
Step 2:UE1 gets back to idle condition after receiving RRC Connection Release at once, and performs the cell search process based on new frequency Band3.
Step 3:UE1 by search discovery one Ge Xin community complete resident, and not to carry out access and resident using current area within 30 minutes as Target cell.
The embodiment of the present invention also proposes a kind of communication system based on flexible duplex technology, and with reference to figure 5, the communication system of the present embodiment comprises: the base station 502 of communication and terminal 504.
With reference to figure 6, base station 502 comprises: configuration module 602, broadcast module 604, terminal capability acquisition module 606, indicating module 608.
Configuration module 602, for the band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, uplink band is set to up-downgoing mixing data receiver to.
Broadcast module 604, for the ascending-descending subframes configuration information of broadcast upstream frequency range, the ascending-descending subframes configuration information of uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point.
Wherein, the ascending-descending subframes percent information of uplink band is as shown in table 1.
Wherein, the protection interval configuration information of the descending and up transfer point of uplink band comprises the tcp data segment in descending sub frame corresponding to descending and up transfer point and protects the ratio at interval; tcp data segment is used for transmission user exclusive data; do not comprise control channel and broadcast channel; and be not used for transmitting high-level signaling; wherein, the descending sub frame sending upstream data is needed after descending and up transfer point refers to downlink data transmission.
Broadcast module 604, also for broadcasting non-compatible information, non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility.
Terminal capability acquisition module 606, for receiving the ability information of the terminal to report supporting flexible duplex capability, is kept at ability information in the contextual information of this terminal;
Indicating module 608, for passing through the control channel of band downlink according to the ability information of terminal to supporting that the terminal of flexible duplex capability sends the descending control indication information of downlink data transmission in uplink band, so that this terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range.
With reference to figure 7, base station also comprises: retransmission module 710, for carrying out the re-transmission of upstream data according to the hybrid automatic repeat-request HARQ strategy of up direction, carries out the transmission of downlink data according to the HARQ strategy of down direction;
Wherein, the HARQ strategy of up direction comprises: the uplink of base station to terminal is dispatched, nearest sub-frame of uplink after 3 subframes of terminal after receiving the scheduling result of uplink sends data, base station is feeding back ACK/nack message in the n-th subframe, if need to retransmit terminal to retransmit in the n-th+Kre subframe, wherein during employing configuration 5, Kre equals 4, and during employing configuration 0 ~ 4, Kre value is as shown in table 2.
Wherein, the HARQ strategy of downlink transfer comprises: base station sends data in the n-th subframe, and terminal is feeding back ACK/nack message in the n-th+K subframe, and when base station adopts configuration 5, K equals 4, and during employing configuration 0 ~ 4, K value is as shown in table 3.
With reference to figure 8, base station also comprises: config update module 812, when ascending-descending subframes configuration information for the uplink band when base station changes, upgrade the broadcast of self, further, if non-compatible information (that is, base station is switched to 0 ~ 4 any one configuration from ascending-descending subframes configuration 5) is enabled in base station, utilize high-level signaling to indicate and do not support that the activated state terminal of flexible duplex capability carries out the release eating dishes without rice or wine to connect, and issue relevant gravity treatment configuration information; According to the new configuration of time point application of agreement, when next moment subsequent subframe is about to apply new configuration information, if find that the re-transmission subframe of terminal cannot find the position of re-transmission according to old HARQ sequential relationship in uplink process, then for terminal reschedules data retransmission transmission subframe numbers.
With reference to figure 9, terminal 504 comprises: capability reporting module 902, configuration receiver module 904, control instruction receiver module 906, data reception module 908.
Capability reporting module 902, if for supporting flexible duplex capability, then report its ability information to base station;
Configuration receiver module 904; for receiving the ascending-descending subframes configuration information of uplink band in one group of symmetrical spectrum that base station sends, the ascending-descending subframes configuration information of uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point.
Configuration receiver module 904, also for receiving the non-compatible information of base station broadcast, wherein, non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility.
Control instruction receiver module 906, for being received the descending control indication information of downlink data transmission in the uplink band of base station transmission by the control channel of band downlink.
Data reception module 908, for receiving the downlink data that the descending sub frame of base station in uplink band sends according to the ascending-descending subframes configuration information of this descending control indication information and this cell uplink frequency range.
With reference to Figure 10, terminal 504 also comprises: retransmission module 1010, for carrying out the re-transmission of upstream data according to the hybrid automatic repeat-request HARQ strategy of up direction, carries out the transmission of downlink data according to the HARQ strategy of down direction.Wherein, the HARQ strategy of up direction and the HARQ strategy of downlink transfer, specifically with reference to aforementioned, repeat no more here.
When configuring receiver module 904 and receiving the ascending-descending subframes configuration information of the uplink band of the renewal of base station broadcast, retransmission module 1010, also for when next moment subsequent subframe is about to apply new configuration information, if terminal finds the position cannot finding re-transmission according to old HARQ sequential relationship in uplink process, then abandon this to retransmit, and wait for the scheduling instruction of base station.
With reference to Figure 11, terminal 504 also comprises: cell reselection module 1112 or parsing module 1114.
Cell reselection module 1112, if do not support flexible duplex capability for terminal, after finding that incompatibility is enabled in base station, if be Idle state at present, carries out cell reselection, and in the term of validity Nei Jianggai community of incompatibility as the Target cell of forbidding accessing;
Parsing module 1114, if for the flexible duplex capability of terminal support, after finding that incompatibility is enabled in base station, resolves the ascending-descending subframes configuration information of the uplink band sent in broadcast further.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (25)
1. a communication means, is characterized in that, comprising:
Base station the band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, uplink band is set to up-downgoing mixing data receiver to;
The ascending-descending subframes configuration information of base station broadcast uplink band, the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point;
Base station receives the ability information of the terminal to report supporting flexible duplex capability, ability information is kept in the contextual information of this terminal;
The control channel of band downlink is passed through to supporting that the terminal of flexible duplex capability sends the descending control indication information of downlink data transmission in uplink band in base station according to the ability information of terminal, so that this terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range;
Wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond.
2. method according to claim 1, is characterized in that, also comprises:
Base station and terminal carry out the re-transmission of upstream data according to the hybrid automatic repeat-request HARQ strategy of up direction;
Wherein, the HARQ strategy of up direction comprises: the uplink of base station to terminal is dispatched, nearest sub-frame of uplink after 3 subframes of terminal after receiving the scheduling result of uplink sends data, base station is feeding back ACK/nack message in the n-th subframe, if need to retransmit terminal to retransmit in the n-th+Kre subframe, wherein during employing configuration 5, Kre equals 4, and during employing configuration 0 ~ 4, Kre value is as shown in the table:
3. method according to claim 1, is characterized in that, also comprises:
Base station and terminal carry out the transmission of downlink data according to the HARQ strategy of down direction;
Wherein, the HARQ strategy of downlink transfer comprises: base station sends data in the n-th subframe, and terminal is feeding back ACK/nack message in the n-th+K subframe, and when base station adopts configuration 5, K equals 4, and during employing configuration 0 ~ 4, K value is as shown in the table:
4. method according to claim 1, is characterized in that,
The protection interval configuration information of the descending and up transfer point of described uplink band comprises the tcp data segment in descending sub frame corresponding to descending and up transfer point and protects the ratio at interval; tcp data segment is used for transmission user exclusive data; do not comprise control channel and broadcast channel; and be not used for transmitting high-level signaling; wherein, the descending sub frame sending upstream data is needed after descending and up transfer point refers to downlink data transmission.
5. method according to claim 1, is characterized in that, also comprises:
Base station broadcast non-compatible information, described non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility.
6. method according to claim 1, is characterized in that, in described uplink band, the descending control indication information of downlink data transmission comprises following content:
Whether Resource Block belongs to modulation system on uplink band, the position of Resource Block and size, the process number numbering of current use, Resource Block and HARQ redundancy versions; Wherein, whether to belong to uplink band only effective to downlink transfer for Resource Block.
7. method according to claim 2, is characterized in that, also comprises:
When the ascending-descending subframes configuration information of the uplink band of base station changes, the broadcast of base station renewal self, and, if base station is switched to 0 ~ 4 any one configuration from ascending-descending subframes configuration 5, base station utilizes high-level signaling to indicate and does not support that the activated state terminal of flexible duplex capability carries out the release eating dishes without rice or wine to connect, and issues relevant gravity treatment configuration information;
Base station and terminal are all according to the new configuration of time point application of agreement, when next moment subsequent subframe is about to apply new configuration information, if find that the re-transmission subframe of terminal cannot find the position of re-transmission according to old HARQ sequential relationship in uplink process, then base station is that terminal reschedules data retransmission transmission subframe numbers.
8. a communication means, is characterized in that, comprising:
If terminal supports flexible duplex capability, then report its ability information to base station;
Terminal receives the ascending-descending subframes configuration information of uplink band in one group of symmetrical spectrum of base station transmission, the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point, wherein, in this group symmetrical spectrum band downlink be entirely descending data receiver to;
Terminal receives the descending control indication information of downlink data transmission in the uplink band of base station transmission by the control channel of band downlink;
Terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range;
Wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond.
9. method according to claim 8, is characterized in that, also comprises:
The re-transmission of upstream data is carried out according to the hybrid automatic repeat-request HARQ strategy of up direction in terminal and base station;
Wherein, the HARQ strategy of up direction comprises: the uplink of base station to terminal is dispatched, nearest sub-frame of uplink after 3 subframes of terminal after receiving the scheduling result of uplink sends data, base station is feeding back ACK/nack message in the n-th subframe, if need to retransmit terminal to retransmit in the n-th+Kre subframe, wherein during employing configuration 5, Kre equals 4, and during employing configuration 0 ~ 4, Kre value is as shown in the table:
10. method according to claim 8, is characterized in that, also comprises:
The transmission of downlink data is carried out according to the HARQ strategy of down direction in terminal and base station;
Wherein, the HARQ strategy of downlink transfer comprises: base station sends data in the n-th subframe, and terminal is feeding back ACK/nack message in the n-th+K subframe, and when base station adopts configuration 5, K equals 4, and during employing configuration 0 ~ 4, K value is as shown in the table:
11. methods according to claim 8, is characterized in that,
The protection interval configuration information of the descending and up transfer point of described uplink band comprises the tcp data segment in descending sub frame corresponding to descending and up transfer point and protects the ratio at interval; tcp data segment is used for transmission user exclusive data; do not comprise control channel and broadcast channel; and be not used for transmitting high-level signaling; wherein, the descending sub frame sending upstream data is needed after descending and up transfer point refers to downlink data transmission.
12. methods according to claim 8, is characterized in that, also comprise:
Terminal receives the non-compatible information of base station broadcast, and wherein, non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility;
If terminal does not support flexible duplex capability, after finding that incompatibility is enabled in base station, if be Idle state at present, carry out cell reselection, and in the term of validity Nei Jianggai community of incompatibility as the Target cell of forbidding accessing;
If the flexible duplex capability of terminal support, after finding that incompatibility is enabled in base station, resolve the ascending-descending subframes configuration information of the uplink band sent in broadcast further.
13. methods according to claim 8, is characterized in that, in described uplink band, the descending control indication information of downlink data transmission comprises following content:
Whether Resource Block belongs to modulation system on uplink band, the position of Resource Block and size, the process number numbering of current use, Resource Block and HARQ redundancy versions; Wherein, whether to belong to uplink band only effective to downlink transfer for Resource Block.
14. methods according to claim 9, is characterized in that, also comprise:
Terminal receives the ascending-descending subframes configuration information of the uplink band of the renewal of base station broadcast, terminal and base station are all according to the new configuration of time point application of agreement, when next moment subsequent subframe is about to apply new configuration information, if terminal finds the position cannot finding re-transmission according to old HARQ sequential relationship in uplink process, then abandon this to retransmit, and wait for the scheduling instruction of base station.
The base station of 15. 1 kinds of communications, is characterized in that, comprising:
Configuration module, for the band downlink of one group of symmetrical spectrum is set to entirely descending data receiver to, uplink band is set to up-downgoing mixing data receiver to;
Broadcast module, for the ascending-descending subframes configuration information of broadcast upstream frequency range, the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point; Wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, and ms represents millisecond;
Terminal capability acquisition module, for receiving the ability information of the terminal to report supporting flexible duplex capability, is kept at ability information in the contextual information of this terminal;
Indicating module, for passing through the control channel of band downlink according to the ability information of terminal to supporting that the terminal of flexible duplex capability sends the descending control indication information of downlink data transmission in uplink band, so that this terminal receives the downlink data of the descending sub frame transmission of base station in uplink band according to this descending control indication information and the ascending-descending subframes configuration information of this cell uplink frequency range.
16. base stations according to claim 15, is characterized in that, also comprise:
Retransmission module, for carrying out the re-transmission of upstream data according to the hybrid automatic repeat-request HARQ strategy of up direction, carries out the transmission of downlink data according to the HARQ strategy of down direction;
Wherein, the HARQ strategy of up direction comprises: the uplink of base station to terminal is dispatched, nearest sub-frame of uplink after 3 subframes of terminal after receiving the scheduling result of uplink sends data, base station is feeding back ACK/nack message in the n-th subframe, if need to retransmit terminal to retransmit in the n-th+Kre subframe, wherein during employing configuration 5, Kre equals 4, and during employing configuration 0 ~ 4, Kre value is as shown in the table:
Wherein, the HARQ strategy of downlink transfer comprises: base station sends data in the n-th subframe, and terminal is feeding back ACK/nack message in the n-th+K subframe, and when base station adopts configuration 5, K equals 4, and during employing configuration 0 ~ 4, K value is as shown in the table:
17. base stations according to claim 15, is characterized in that,
The protection interval configuration information of the descending and up transfer point of described uplink band comprises the tcp data segment in descending sub frame corresponding to descending and up transfer point and protects the ratio at interval; tcp data segment is used for transmission user exclusive data; do not comprise control channel and broadcast channel; and be not used for transmitting high-level signaling; wherein, the descending sub frame sending upstream data is needed after descending and up transfer point refers to downlink data transmission.
18. base stations according to claim 15, is characterized in that,
Broadcast module, also for broadcasting non-compatible information, described non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility.
19. base stations according to claim 15, is characterized in that, also comprise:
Config update module, when ascending-descending subframes configuration information for the uplink band when base station changes, upgrade the broadcast of self, and, if base station is switched to 0 ~ 4 any one configuration from ascending-descending subframes configuration 5, utilize high-level signaling to indicate and do not support that the activated state terminal of flexible duplex capability carries out the release eating dishes without rice or wine to connect, and issue relevant gravity treatment configuration information; According to the new configuration of time point application of agreement, when next moment subsequent subframe is about to apply new configuration information, if find that the re-transmission subframe of terminal cannot find the position of re-transmission according to old HARQ sequential relationship in uplink process, then for terminal reschedules data retransmission transmission subframe numbers.
The terminal of 20. 1 kinds of communications, is characterized in that, comprising:
Capability reporting module, if for supporting flexible duplex capability, then report its ability information to base station;
Configuration receiver module; for receiving the ascending-descending subframes configuration information of uplink band in one group of symmetrical spectrum that base station sends; the ascending-descending subframes configuration information of described uplink band comprises the ascending-descending subframes percent information of uplink band and the protection interval configuration information of descending and up transfer point; wherein; in this group symmetrical spectrum band downlink be entirely descending data receiver to; wherein, the ascending-descending subframes percent information of described uplink band is as shown in the table:
Wherein, the ascending-descending subframes percent information of 0 ~ 5 kind of uplink band shown in upper table, D represents descending sub frame, and U represents sub-frame of uplink, m
srepresent millisecond;
Control instruction receiver module, for being received the descending control indication information of downlink data transmission in the uplink band of base station transmission by the control channel of band downlink;
Data reception module, for receiving the downlink data that the descending sub frame of base station in uplink band sends according to the ascending-descending subframes configuration information of this descending control indication information and this cell uplink frequency range.
21. terminals according to claim 20, is characterized in that, also comprise:
Retransmission module, for carrying out the re-transmission of upstream data according to the hybrid automatic repeat-request HARQ strategy of up direction, carries out the transmission of downlink data according to the HARQ strategy of down direction;
Wherein, the HARQ strategy of up direction comprises: the uplink of base station to terminal is dispatched, nearest sub-frame of uplink after 3 subframes of terminal after receiving the scheduling result of uplink sends data, base station is feeding back ACK/nack message in the n-th subframe, if need to retransmit terminal to retransmit in the n-th+Kre subframe, wherein during employing configuration 5, Kre equals 4, and during employing configuration 0 ~ 4, Kre value is as shown in the table:
Wherein, the HARQ strategy of downlink transfer comprises: base station sends data in the n-th subframe, and terminal is feeding back ACK/nack message in the n-th+K subframe, and when base station adopts configuration 5, K equals 4, and during employing configuration 0 ~ 4, K value is as shown in the table:
22. terminals according to claim 20, is characterized in that,
The protection interval configuration information of the descending and up transfer point of described uplink band comprises the tcp data segment in descending sub frame corresponding to descending and up transfer point and protects the ratio at interval; tcp data segment is used for transmission user exclusive data; do not comprise control channel and broadcast channel; and be not used for transmitting high-level signaling; wherein, the descending sub frame sending upstream data is needed after descending and up transfer point refers to downlink data transmission.
23. terminals according to claim 20, is characterized in that,
Described configuration receiver module, also for receiving the non-compatible information of base station broadcast, wherein, non-compatible information is used to indicate does not support that the terminal of flexible duplex capability cannot be linked into this community, and non-compatible information comprises the term of validity of whether enabling incompatibility and incompatibility;
Described terminal also comprises: cell reselection module or parsing module;
Described cell reselection module, if do not support flexible duplex capability for terminal, after finding that incompatibility is enabled in base station, if be Idle state at present, carries out cell reselection, and in the term of validity Nei Jianggai community of incompatibility as the Target cell of forbidding accessing;
Described parsing module, if for the flexible duplex capability of terminal support, after finding that incompatibility is enabled in base station, resolves the ascending-descending subframes configuration information of the uplink band sent in broadcast further.
24. terminals according to claim 21, is characterized in that,
When described configuration receiver module receives the ascending-descending subframes configuration information of the uplink band of the renewal of base station broadcast, described retransmission module, also for when next moment subsequent subframe is about to apply new configuration information, if terminal finds the position cannot finding re-transmission according to old HARQ sequential relationship in uplink process, then abandon this to retransmit, and wait for the scheduling instruction of base station.
25. 1 kinds of communication systems, comprising: the base station described in any one of claim 15-19 and the terminal described in any one of claim 20-24.
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