CN101835194B - Base station - Google Patents
Base station Download PDFInfo
- Publication number
- CN101835194B CN101835194B CN 200910008197 CN200910008197A CN101835194B CN 101835194 B CN101835194 B CN 101835194B CN 200910008197 CN200910008197 CN 200910008197 CN 200910008197 A CN200910008197 A CN 200910008197A CN 101835194 B CN101835194 B CN 101835194B
- Authority
- CN
- China
- Prior art keywords
- base station
- subframe
- relay
- relay station
- send
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a base station, and a method by which the base station communicates with a relay station. The base station comprises a transmit unit (601), a receiving unit (602), a judging unit (603) and a scheduling unit (604), wherein the judging unit (603) is used for judging whether the relay station has signals to be sent to the base station; the scheduling unit (604) is used for scheduling the receiving unit (602) according to the judged result of the judging unit (603), thus when the relay station has signals to be sent to the base station, ensuring that the receiving unit (602) receives the data from the relay station during the one or more uplink subframe periods of being used as the uplink relay subframe except being used for transmitting the uplink subframe aiming at the receiving feedback of data transmitted on an absolute down access link, and the scheduling unit also schedules a mobile station, thus the mobile station does not send data to the relay station during the up trunk link subframe period.
Description
Technical field
The present invention relates to communication system, be specifically related to contain the communication system of transparent relay stations.
Background technology
Along with the fast development of radio multimedium business, the user is more and more higher to the requirement of data communication capacity and transmission quality.Yet, because stop in the complex wireless environments, the impact of the factor such as shade, formed many communication dead angle.These will make the user be difficult to two-forty and the high-quality communication service that obtains to continue.In order to address this problem, wireless system adopts relay station that the wireless communication signals between base station and the travelling carriage is transmitted to improve throughput of system and user data rate.
In comprising the wireless communication system of relay station, according to the direct communication object of travelling carriage, travelling carriage can be divided into two classes, be respectively the travelling carriage of base station service and the travelling carriage of relay station service.Fig. 1 has provided the data forwarding process of typical relay station.As shown in Figure 1, UE 1 and UE 2 are the travelling carriage of relay station service, and UE 3 is the travelling carriage of base station service.UE 1 and UE 2 at first send data (relay station reception) to relay station RS, and then RS sends to base station BS (relay station forwarding) with collected data (UE 1 data and UE 2 data).Should be noted that only to show the travelling carriage collection data that relay station RS serves from relay station among Fig. 1, and with the situation of data retransmission to the base station, relay station can also and be given data retransmission the travelling carriage of this relay station service from the base station receive data.The quantity of UE also is schematic in addition.
Existing travelling carriage standard is not brought any impact when General Requirements adds relay station in wireless system, namely relay station is transparent to travelling carriage, and travelling carriage is not also known the existence of relay station.Usually, the communication link between base station and the relay station is called repeated link, link is called access link between base station or relay station and the travelling carriage.The base station is called downlink relay link to the communication link of relay station, and relay station is called relay uplink to the communication link of base station; Base station or relay station are called descending access link to the communication link of travelling carriage, and travelling carriage is called uplink access link to the communication link of relay station or base station.
The inventor finds in the TDD system in making process of the present invention, when introducing relaying, has ACK/NACK feedback and the collision problem that sends data.The below is explained.
In the TDD system, the relay station of adding only has a radio frequency link, so can only be receipts state or the state of sending out at relay station sometime, can not be in simultaneously reiving/transmitting state.Because in the TDD system, relay station can not be in reiving/transmitting state simultaneously, thereby in downlink relay link, relay station is in the state of receipts, so relay station can not send any data to travelling carriage this moment; In relay uplink, relay station is in the state of sending out, and relay station can not receive the signal from travelling carriage.
The below carries out simple explanation to the frame structure of existing LTE TDD standard first.In LTETDD, a frame is fixed as 10ms, comprises the subframe of 10 1ms.Different according to the quantity of sub-frame of uplink and descending sub frame, LTE TDD has defined 7 kinds of frame structures, i.e. frame structure 0-6 altogether.Some subframe is given down link in the frame of a 10ms, is called downlink subframe, and some subframe is given up link, is called uplink sub-frames.The base station sends data in downlink subframe, travelling carriage or relay station receive data; Travelling carriage sends data at uplink sub-frames, relay station or base station receive data.The below describes as an example of Fig. 2 example.Fig. 2 is the frame structure 3 of LTE TDD, and wherein D represents downlink subframe, and subframe # 0 among the figure, #5-#9 are downlink subframe.S represents special subframe, is subframe # 1 among the figure.Subframe # 1 is used for the base station and transmits synchronizing signal, and travelling carriage sends the access signal, and the transmitting-receiving conversion of travelling carriage and base station etc.U represents uplink sub-frames, is subframe # 2 among the figure, #3, #4.If downlink subframe # 9 is used for the base station to the data link of relay station, then subframe # 9 is called the downlink relay link subframe, and other downlink subframe are called descending access link subframe.If uplink sub-frames # 2 is used for relay station to the data link of base station, then subframe # 2 is called the relay uplink subframe, and other uplink sub-frames are called the uplink access link subframe.
For down link, can be broadcast multi-broadcasting single frequency network (MBSFN) subframe with the downlink relay link sub-frame configuration, be used for transmitting the base station to the data of relay station.The time-frequency structure of typical MBSFN subframe as shown in Figure 3, wherein, all travelling carriages receive the information such as control signal from base station or relay station, frequency pilot sign in the previous of MBSFN subframe or two OFDM symbols, the OFDM symbol of back is sightless to all travelling carriages, so can transmit with the OFDM symbol of MBSFN subframe back the base station to the data-signal of relay station.
Because broadcast channel, addressing channel, synchronizing channel etc. need to be at descending sub frame or special subframe # 0, #1, #5, transmit among the #6, so these four subframes can not be used as the MBSFN subframe, can only be as descending access link subframe, in this article, for the convenience that illustrates, can only be called as the subframe of descending access link subframe absolute descending access link subframe.
Travelling carriage need to send decoding response signal ACK/NACK (also claiming to receive in this article feedback) to base station and relay station after receiving the data that base station or relay station send, wherein ACK represents to decipher correct signal, and NACK represents the signal of decoding error.In order after adding relay station the standard of existing LTE TDD not to be brought any impact, the feedback of ACK/NACK must be followed the standard of existing LTE TDD.Time delay in the existing standard between the feedback of regulation from the receive data to ACK/NACK need to be greater than 3ms.Take Fig. 4 as example, wherein the third line is the feedback position of fixing ACK/NACK corresponding to the data of transmitting in each subframe.As shown in Figure 4, must feed back in subframe # 4 for the ACK/NACK of the data that send among the descending sub frame # 0, the ACK/NACK of the data that send for sub-frame of uplink # 2 must feed back at subframe #8.Should be noted that it is to stipulate in the standard that herein ACK/NACK feeds back, and does not generally change in which subframe.
Because subframe # 0, #1, #5, #6 can not be as the MBSFN subframes, namely the downlink relay link subframe sends data to travelling carriage transmission data or relay station to travelling carriage so these subframes can only be used for the base station.And because travelling carriage receives that the ACK/NACK that produces after the data must send in the fixedly sub-frame of uplink of correspondence.If these sub-frame of uplink are used to relay uplink, then because relay station is to be in the transmission state in relay uplink, so relay station can't receive the ACK/NACK from travelling carriage, collision has occured namely.
The generation of this collision is described as an example of Fig. 4 example, and subframe # 2 is the relay uplink subframe among Fig. 4, and namely data are transmitted to BS by RS.Subframe # 9 is the MBSFN subframe, i.e. the downlink relay link subframe.ACK/NACK corresponding to data that is sent by travelling carriage relay station in relay station feedback and subframe # 5, the #6 at the subframe # 2 of next frame, but since this moment subframe # 2 as relay uplink, be that relay station is in the transmission state, so relay station can't receive the ACK/NACK that the travelling carriage of relay station service feeds back.The collision of ACK/NACK and transmission data namely appears.
To above-mentioned ACK/NACK feedback and the collision problem that sends data, also do not provide concrete solution in the LTE TDD standard.
In the MBSFN subframe, can transmit base station or relay station to the reception feedback (ACK/NACK) from travelling carriage.In some cases, also can exist relay station to travelling carriage transmission ACK/NACK and from the collision between the receive data of base station.
Explanation to routine techniques above should be noted that is just carried out clear, complete explanation for convenient to technical scheme of the present invention, and makes things convenient for those skilled in the art's understanding to set forth.Can not only partly carry out setting forth and thinking that technique scheme is conventionally known to one of skill in the art in background technology of the present invention because of these schemes.
Below listed list of references of the present invention, by reference they have been incorporated into this, as having done in this manual detailed description.
1, [patent documentation 1]: Tak-ki Yu, et al., Method and apparatus for allocatingpeer-to-peer resource in relay based wireless communication system (US20090034447A1);
2, [patent documentation 2]: Jeffrey D.Bonta, et al., System and method of resourceallocation within a communication system (US 20090034432A1);
3, [patent documentation 3]: Relay system and method for bandwidth allocation andscheduling (US 20080316954A1);
4, [patent documentation 4]: Radio resource management in wireless cellularnetworks having multihop relay stations (US 20080220790 A1);
5, [patent documentation 5]: Flexible radio resource sharing in time and frequencydomains among TDD communication systems (US 20080144612 A1);
5, [non-patent literature 1]: Nokia, Considerations on TDD Relay, 3GPPTSG-RAN1, R1-090244;
6, [non-patent literature 2]: LG, UL subframe stealing for in-band relaying inTDD mode, 3GPP TSG-RAN1, R1-090225.
Summary of the invention
Embodiments of the present invention are made in view of the foregoing problems of prior art, are used for solving or alleviating the problem of ACK/NACK and data collision (hereinafter claiming the ACK/NACK collision).
In order to realize above purpose, the invention provides following aspect:
Described judging unit is used for judging whether relay station has the signal that will send to described base station;
Scheduling unit is dispatched receiving element according to the judged result of judging unit, thereby in as the downlink subframe outside absolute descending access link subframe specific sub-frame, described, receive the described signal from this relay station, and described scheduling unit is notified described relay station: send described signal in the downlink subframe corresponding with described specific sub-frame, described scheduling unit is notified mobile radio station: the downlink subframe corresponding with described specific sub-frame is the MBSFN subframe.
Aspect 11, a kind of dispatching method, may further comprise the steps: determining step, judge the base station data whether oriented relay station sends, the scheduling step, when described determining step is judged the data of oriented described relay station transmission, then at a certain descending sub frame, described base station sends data to relay station, and this descending sub frame of notice travelling carriage is the MBSFN subframe; And dispatch, thereby travelling carriage does not transmit data to relay station during the subframe of the feedback that transmits the data that transmit for this descending sub frame.
Aspect 13, according to the dispatching method of aspect 12, wherein, further comprising the steps of: dispatch described relay station make described relay station not in the descending sub frame of the feedback of the data that carrying transmits in to this sub-frame of uplink to the travelling carriage transmitted signal.
Aspect 14, a kind of base station, this base station comprises transmitting element, receiving element, judging unit and scheduling unit, and wherein said judging unit is used for judging whether this relay station has signal and the described base station that will send to this base station whether the signal that will send to described relay station is arranged; Scheduling unit is dispatched according to the judged result receiving element of judging unit, thereby (1) when described relay station has the signal that will send to this base station and described base station that the signal that will send to described relay station is arranged, make described receiving element as the relay uplink subframe, for the signal that receives during transmission uplink sub-frames one or more uplink sub-frames in addition for the reception feedback of the data that transmit on the absolute descending access link subframe from described relay station, and described scheduling unit is also dispatched travelling carriage and relay station, thereby described travelling carriage does not send data to described relay station during described relay uplink subframe, make described transmitting element as the downlink relay link subframe, it receives feedback and send described data to described relay station during one or more downlink subframe that this relay uplink subframe transmits, described scheduling unit is notified described travelling carriage: be the MBSFN subframe with this as downlink subframe corresponding to described downlink relay link subframe, and described scheduling unit is dispatched described relay station, thereby described relay station does not send data to travelling carriage during described downlink relay link subframe; Or when described relay station has the signal that will send to this base station and described base station that the signal that will send to described relay station is arranged, in as the downlink subframe outside absolute descending access link subframe specific sub-frame, described, receive the data from this relay station, and described scheduling unit is notified to described relay station: in the downlink subframe corresponding with described specific sub-frame, send upstream data; (2) judge the signal that the oriented described relay station in base station sends but during the signal that relay station does not send to described base station at described determining step, so that at a certain descending sub frame, described base station is to the relay station transmitted signal, and this descending sub frame of notice travelling carriage is the MBSFN subframe; And dispatch, thereby travelling carriage does not transmit data to relay station during the subframe of the feedback that transmits the data that transmit for this descending sub frame; (3) when judging relay station the data that will send the base station to arranged, optional a certain sub-frame of uplink is as the relay uplink subframe, dispatch and make this relay station in the subframe that this sub-frame of uplink carries, not send to the downlink data of travelling carriage at its feedback information, and dispatch and make travelling carriage during this sub-frame of uplink, not send upstream data to described relay station.
With reference to the following description and accompanying drawing, of the present invention these will become clearer with further aspect and feature.In described explanation and accompanying drawing, particular implementation of the present invention is disclosed in detail, having indicated principle of the present invention can adopted mode.Should be appreciated that, the present invention on scope not thereby be restricted.In the scope of the spirit of claims and clause, the present invention includes many changes, revise and be equal to.
Can in one or more other execution mode, use in identical or similar mode for the feature that a kind of execution mode is described and/or illustrated, combined with the feature in other execution mode, or the feature in alternative other execution mode.
Should emphasize that term " comprises/comprise " existence that refers to feature, whole, step or assembly when this paper uses, but not get rid of the existence of one or more further feature, whole, step or assembly or additional.
With reference to following accompanying drawing a lot of aspects that the present invention may be better understood.Parts in the accompanying drawing are not proportional draftings, and just for principle of the present invention is shown.For the ease of illustrating and describe some parts of the present invention, counterpart may be exaggerated in the accompanying drawing, that is, make it become larger with respect to other parts in the exemplary means of foundation Practical manufacturing of the present invention.The element of describing in an accompanying drawing of the present invention or a kind of execution mode and feature can combine with element and the feature shown in one or more other accompanying drawing or the execution mode.In addition, in the accompanying drawings, similarly label represents parts corresponding in several accompanying drawings, and can be used for indicating the corresponding component that uses more than in a kind of execution mode.
Description of drawings
Accompanying drawing shows the preferred embodiments of the present invention, has consisted of the part of specification, is used for explaining in further detail principle of the present invention with explanatory note.Wherein:
Fig. 1 shows the data forwarding process of typical relay station system;
Fig. 2 shows the configuring condition of the up-downgoing repeated link subframe of LTE TDD system frame structure 3 and selection;
Fig. 3 shows the time-frequency structure of MBSFN subframe;
Fig. 4 shows LTE TDD system frame structure 3, and the collision problem of ACK/NACK has been described;
Fig. 5 has schematically provided the frame structure 3 according to the first execution mode of the present invention;
Fig. 6 shows the structural representation according to the base station of first embodiment of the invention;
Fig. 7 is schematically illustrated in the situation that adopts frame structure 3 shown in Figure 5, the processing in the base station BS shown in Figure 6;
Fig. 8 has schematically shown the time sequential routine figure of the communication system of embodiment of the present invention;
Fig. 9 has schematically provided the structure of the specific sub-frame of a kind of embodiment;
Figure 10 schematically shows the frame structure 3 according to second embodiment of the invention;
Figure 11 schematically shows the another kind of frame structure 3 according to second embodiment of the invention;
Figure 12 shows for tdd frame structure 3 shown in Figure 5, when not having the data communication that is relayed to the base station, and the scheduling of adopting for solving the ACK/NACK collision problem;
Figure 13 shows for tdd frame structure 3 shown in Figure 5, and there is the data communication that is relayed to the base station in certain 10ms frame, when not existing the base station to arrive the data communication of relaying, and the scheduling of carrying out for solving the ACK/NACK collision problem;
Figure 14 shows for tdd frame structure 3 shown in Figure 5, and certain 10ms frame exists relay station to the data communication of base station, when not existing the base station to arrive the data communication of relay station, and the scheduling of carrying out for solving the ACK/NACK collision problem;
Figure 15 shows the tdd frame structure 3 for the second execution mode, and there is the data communication that is relayed to the base station in certain 10ms frame, when not existing the base station to arrive the data communication of relay station, and the scheduling of carrying out for solving the ACK/NACK collision problem;
Figure 16 shows according to embodiments of the present invention, and for LTE tdd frame structure 3, certain 10ms frame exists the base station to arrive the data communication of relay station, when not having relay station to the data communication of base station, and the scheduling of adopting for solving the ACK/NACK collision problem;
Figure 17 shows according to embodiments of the present invention, and for LTE tdd frame structure 3, certain 10ms frame exists relay station to the data communication of base station, when not existing the base station to arrive the data communication of relay station, and the scheduling of adopting for solving the ACK/NACK collision problem;
Figure 18 shows LTE tdd frame structure 3, and certain 10ms frame exists relay station to the data communication of base station, when not existing the base station to arrive the data communication of relay station, and the dispatching method that adopts for solving the ACK/NACK collision problem; And
Figure 19 has schematically shown the flow chart of the dispatching method of another embodiment of the present invention.
Embodiment
The below comes the method and apparatus of embodiment of the present invention is described with reference to accompanying drawing take the general communication system that comprises relay station as example.
The first execution mode
In first embodiment of the invention, the uplink sub-frames that the base station need not be transmitted for the feedback of the upper data that transmit of absolute descending access link subframe (for example subframe # 0, #1, #5, #6) is set as the relay uplink subframe.And will in descending access link subframe, be set as the downlink relay link subframe for the ACK/NACK of its data that transmit feedback in the descending access link subframe that the relay uplink subframe of this setting transmits, i.e. MBSFN subframe.
Fig. 5 has schematically provided the frame structure 3 according to the first execution mode of the present invention.
As shown in Figure 5, three uplink sub-frames are arranged, i.e. subframe # 2, #3, #4 in frame structure 3.Subframe # 2 need to transmit the ACK/NACK feedback for the upper data that transmit of absolute descending access link subframe (subframe # 5, #6), thereby subframe # 2 should be set as the relay uplink subframe.Similarly, subframe # 4 will transmit the ACK/NACK feedback of the upper data that transmit of absolute descending access link subframe (subframe #0), thereby subframe # 4 should be set as the relay uplink subframe.Thereby, subframe # 3 is set as the relay uplink subframe.
Three non-absolute downlink subframe, i.e. subframe # 7, #8, #9 are arranged in frame structure 3.ACK/NACK feedback for the upper data that transmit of subframe # 9 transmits at subframe # 4, and transmit at subframe #3 (also claiming the subframe corresponding with the relay uplink subframe, because it is the corresponding subframe at other frames) for the ACK/NACK feedback of subframe # 7 and the upper data that transmit of #8.Thereby subframe # 7 and #8 be set as the downlink relay link subframe.
In the example depicted in fig. 5, transmit in subframe # 2 for the ACK/NACK feedback of the data of the transmission on subframe # 5 and the #6, and subframe # 2 is as relay uplink, thereby this moment, relay station was in the state of receipts, can not cause the ACK/NACK collision.Equally, because subframe 7 and subframe 8 are all as the MBSFN subframe, be used for transmitting BS to data and the ACK/NACK information of RS, so travelling carriage does not have the ACK/NACK feedback generation yet, so also can not cause because subframe # 3 has become relay uplink the ACK/NACK collision.
Fig. 6 shows the structural representation according to the base station of first embodiment of the invention.As shown in Figure 6, the base station according to first embodiment of the invention comprises transmitting element 601, receiving element 602, judging unit 603 and scheduling unit 604.
Transmitting element 601 is used for sending various data, control command, pilot signal etc. to the travelling carriage of relay station or base station service, and receiving element 602 is used for receiving various data, feedback etc. from the travelling carriage of the direct service of relay station or base station.The base station in two or three the OFDM symbol in the front of each descending sub frame to relay station with travelling carriage sends control signaling and pilot tone, wherein control signal comprises the schedule information of base station, namely notify travelling carriage or the relay station superfluous receive data of which time-frequency list in this subframe, and notify travelling carriage and relay station to send data etc. to the base station in which time frequency unit of which sub-frame of uplink.Control signal also comprises the base station receive the data of travelling carriage or relaying after, to the ACK/NACK of travelling carriage or relaying feedback.
Judging unit 603 is used for judging whether the base station has the data that will send to relay station, and judges whether relay station has the data that will send to the base station.
In the first execution mode of the present invention, transmitting element in uplink sub-frames (the relay uplink subframe of the namely setting) reception of the feedback that need not transmit the data that transmit for absolute descending access link subframe (such as subframe # 0, #1, #5, #6) from the data of relay station, ACK/NACK etc.And the ACK/NACK of the data that transmit for it in descending access link subframe feedback is sent to the downlink data, ACK/NACK etc. of relay station to relay station during the descending access link subframe that the relay uplink subframe of this setting transmits.
Fig. 7 shows in the situation that adopts frame structure 3 shown in Figure 5, the processing in the base station BS shown in Figure 6.
At first, the judging unit 603 of base station judges whether the base station will send data to relay station and judge whether relay station will send a signal to base station (S700).If the base station will send a signal to relay station and relay station will send a signal to base station (S701, be), then at step S704, the scheduling unit 604 of base station is dispatched, make travelling carriage not send upstream data in relay uplink subframe (subframe 3), and make relay station in downlink relay link subframe (subframe 8), not send to the signal (scheduling 1) of travelling carriage, and make transmitting element 601 send to the signal of relay station in the downlink relay link of determining at step S705, and make receiving element 602 receive signal from relay station in the relay uplink of determining at step S706.Relay station does not have signal will send to base station (S702 if the base station has signal will send to relay station, be), then because at subframe #7 or #8, relay station is in accepting state, thereby for avoiding collision, thereby at step S707, the scheduling unit 604 of base station is dispatched (scheduling 2), make relay station not send data to travelling carriage in this subframe (subframe #7 or #8), this subframe of notice travelling carriage is the MBSFN subframe, and in step S708, in this MBSFN subframe to the relay station transmitted signal.Relay station has signal will send to base station (S703 if the base station does not have signal will send to relay station, be), then because relay station is in the transmission state in this subframe, thereby the scheduling unit 604 of base station is dispatched, make travelling carriage not send upward signal (S709) in relay uplink subframe (subframe #3), then in the relay uplink subframe, receive the signal (S710) from relay station.If the base station does not have signal will send to relay station and relay station does not have signal will send to the base station, then the scheduling unit 604 of base station is not dispatched especially, and carries out routine scheduling (S711) same as the prior art.
The data that the needs of the data volume that the judging unit 603 of base station can transmit according to a downlink relay link subframe and the storage of place, base station send to relay station determine whether that needs send the data to relay station.Particularly, for example, when data volume that the data volume of storage can be transmitted greater than a downlink relay link subframe, the base station can be dispatched and be carried out data to relay station and send.
In like manner, the data volume that the relay station place of the data volume that the judging unit 603 of base station can transmit according to a relay uplink subframe and the monitoring of place, base station receives, judging whether relay station has need to be to the data of its transmission.Particularly, for example, during the data volume that can transmit greater than a relay uplink subframe in the data volume that receives when relay station, can judge that relay station need to send data to it.
Travelling carriage whether certain sub-frame of uplink to the base station or relaying to send data be to be determined by the control signal that before certain corresponding descending sub frame sends, if the base station allows travelling carriage to send data in certain sub-frame of uplink, then the base station sends control signaling to travelling carriage in previous two or three OFDM symbols of this corresponding descending sub frame, indicate it and whether be allowed to this sub-frame of uplink transmission data, and indicate the shared running time-frequency resource of transmission data etc.
Fig. 8 has schematically shown the time sequential routine figure of the communication system of embodiment of the present invention.
In a frame, the transmitting element of base station travelling carriage to the base station service in as previous in the MBSFN subframe (subframe # 7 or #8) of downlink relay link subframe or two OFDM symbols sends the information (S100) such as pilot tone and control signal, and the travelling carriage to the relay station service in front several OFDM symbols of relay station in this MBSFN subframe sends the information (S110) such as pilot tone and control signal.
The base station sends information (S120) to relay station in OFDM symbol subsequently.And relay station receives the information that sends from the base station in OFDM symbol subsequently.
Receive in front several OFDM symbols of travelling carriage in this MBSFN subframe from information such as the pilot tone of base station or relay station or control signals, do not receive At All Other Times any information.
Simultaneously, in relay uplink subframe # 3, the base station receives the information that sends from relay station; Relay station sends information (S130) to the base station; For all travelling carriages, under the scheduling of base station, in this sub-frame of uplink, keep silent.
The figure that should be noted that Fig. 8 is that schematically the processing of having omitted base station, relay station and travelling carriage in other subframe is to be illustrated more clearly in the characteristics of embodiment of the present invention.
Can find out that from top description the frame structure that travelling carriage is followed does not change fully, thereby travelling carriage need not done any change.
The second execution mode
In the second execution mode of the present invention, the base station becomes specific sub-frame with a certain descending access link subframe, and specific sub-frame as the MBSFN subframe, receives the control signal from base station and relay station for all travelling carriages.Be used as specific sub-frame for relay station, be used for sending control signaling to the travelling carriage of relay station service, and be used for to base station transmission data., be used for sending control signaling to the travelling carriage of base station service as specific sub-frame for the base station, and be used for receiving the data that relay station sends.
Fig. 9 has schematically provided the structure of the specific sub-frame of a kind of embodiment.As shown in Figure 9, for all UE, this subframe shows as MBSFN, and namely in previous or two OFDM symbols, the user that BS and RS are respectively separately service sends control signaling and pilot tone etc., and this moment, BS was the transmission state.For the convenience that illustrates, the time that claims BS to be in the transmission state in this specific sub-frame is the descending period.Ensuing a bit of time (base station determines the length of this section period), BS transfers accepting state to by the transmission state.Can be called during this period of time the first conversion period or the first protective time slot, can should the period yet.Then BS receives the forwarding data from RS within the ensuing time, and this section period is called the up period.Herein, in the crack, feedback will send to relay station if there is ACK/NACK the base station at this moment, and then this ACK/NACK feedback can send with the data-reusing of base station to relay station.Last BS transfers the transmission state to by accepting state, can be called during this period of time the second conversion period or the second protective time slot, also can not have this period.
In addition, although in the example depicted in fig. 9, a transmit time segments transfer control signaling, pilot tone etc. in the embodiment of alternative, also can transmit BS to the data of RS in some symbols.
Figure 10 schematically shows the frame structure 3 according to second embodiment of the invention.As shown in figure 10, non-absolute downlink subframe # 7 in the descending sub frame is configured to specific sub-frame, and will carry another non-absolute downlink subframe for the receiving feedback information of the data that transmit on this specific sub-frame, for example subframe # 8 or #9 are (in the example of Figure 10, be depicted as subframe #9), be set as the MBSFN subframe.These two subframes (#7 and #9) of the scheduling unit of base station notice travelling carriage are the MBSFN subframes simultaneously, and this subframe 7 of notice relay station is that specific sub-frame, subframe 9 are the MBSFN subframe.The explanation that it should be noted that the front is exemplary, also can be with other subframe, and for example some absolute downlink subframe are set to specific sub-frame.Equally, also a certain absolute downlink subframe can be arranged carrying for the feedback of feedback subframe of the data that transmit on this specific sub-frame.
In addition, should note, although in the example of Figure 10, with subframe # 9 as the downlink relay link subframe, but also can only subframe 7 be configured to specific sub-frame and other downlink relay link subframe (specific sub-frame had both transmitted BS to the data of RS, when also transmitting RS to the data of BS) is not set in addition.In addition, although in the example of Figure 10, subframe 7 is configured to specific sub-frame, also other subframe (for example subframe 8 and subframe 9) can be set as specific sub-frame.In addition, a plurality of specific sub-frame can be set.
When there was relay station to the data communication of base station in certain 10ms frame, at first at specific sub-frame # 7, RS sent to the data of BS.After BS receives data, send feedback to the data that receive at the subframe # 9 of next frame.Because for travelling carriage, subframe # 7 and subframe # 9 are descending sub frames, thereby the ACK/NACK collision can not occur.Equally, in certain 10ms frame, when the base station had to the data communication of relay station, it transmitted at subframe # 9, and RS can send at the subframe # 7 of next frame the feedback of the data that receive.Because for travelling carriage, subframe # 7 and subframe # 9 are descending sub frames, thereby the ACK/NACK collision can not occur yet.
In addition, do not arrange except specific sub-frame in the situation of other MBSFN, feedback that can specific sub-frame is set to this specific sub-frame self.This for example as shown in figure 11.At this moment only needing to travelling carriage notice subframe # 7 is that the MBSFN subframe gets final product.
Like this, in the second execution mode of the present invention, the frame structure that travelling carriage is followed does not change yet, although the frame structure between relay station and the base station is different from frame structure and the frame structure between relay station and the travelling carriage between base station and the travelling carriage, the agreement between base station and the relay station is to be easy to realize comparatively speaking.
In the second execution mode, the transmitting element 601 of base station is used for sending various data, control command, pilot signal etc. to the travelling carriage of the direct service of relay station or base station, and receiving element 602 is used for receiving various data, feedback etc. from the travelling carriage of the direct service of relay station or base station.
Judging unit 603 is used for judging whether the base station has the data that will send to relay station, and judges whether relay station has the data that will send to the base station.
In addition, the base station of second embodiment of the invention can also comprise regulon, this regulon will send to the data of relay station and quantity that relay station will be issued the data of base station, type, priority, pressing degree etc. or their combination in any according to the base station, and the length of the descending time slot in the specific sub-frame and ascending time slot is adjusted.This regulon can also be adjusted the duration of the first protection time slot and the second protection time slot according to channel quality, qos requirement etc.
In addition, the second execution mode can with the first execution mode combination, for example in frame structure shown in Figure 53, subframe 7 and/or subframe 9 can be set to specific sub-frame.
Although should be noted that above description to embodiment of the present invention is the carrying out as an example of frame structure 3 example, should be noted that this is not limitation of the present invention.For example, for frame structure 1, can be with subframe # 3 as the relay uplink subframe, and simultaneously with subframe # 9 as the MBFSN subframe.Also can be with subframe # 8 as the relay uplink subframe, and simultaneously with subframe # 4 as the MBFSN subframe.Also can be with subframe # 3 and #8 all as the relay uplink subframe, and simultaneously with subframe # 4 and #9 all as the MBFSN subframe.
For frame structure 4, among subframe # 4, #7, #8 and the #9 one or more can be set as specific sub-frame.
For frame structure 2, subframe # 3 can be set as specific sub-frame.Perhaps also can be with can be with subframe # 2 as the relay uplink subframe, and simultaneously with subframe # 8 as the MBFSN subframe.
Embodiments of the present invention also disclose a kind of relay, and it comprises transmitting element, receiving element, judging unit and scheduling unit.Whether judgment unit judges has data will send to the base station and whether the base station has data will send to relay station, scheduling unit is dispatched transmitting element according to the judged result of judging unit, thereby transmitting element can receive the data for this relay station from the base station in the descending time slot of particular time-slot, and receiving element can send relay station to the data of base station in the ascending time slot of particular time-slot.
The invention discloses a kind of frame structure, comprise specific sub-frame in this frame structure, namely not only comprised as the time slot of MBFSN subframe but also comprise frame as the time slot of relay uplink subframe.
The invention also discloses a kind of frame structure, being not used in the uplink sub-frames that transmits for the ACK/NACK feedback of the data that transmit on the absolute descending access link as the relay uplink subframe, and will receiving and feed back the downlink subframe that transmits in this relay uplink subframe as the downlink relay link subframe in this frame structure.
The below is described in detail the scheduling in execution mode 1 and 2.
Figure 12 shows for tdd frame structure 3 shown in Figure 5, when not having the data communication that is relayed to the base station, and the scheduling of adopting for solving the ACK/NACK collision problem.In the example depicted in fig. 12, after having considered that relay data is issued in the base station, relaying can be to base station feedback ACK/NACK, as shown in figure 12, subframe # 7 among the frame # 0 and subframe # 8 are as the downlink relay link subframe, be used for transmitting BS to the data of RS, after RS receives data, according to standard code, in need to the subframe # 3 in frame # 1 by relaying to base station feedback ACK/NACK, namely among the subframe # 3, relaying is in the state of sending out, so the scheduling travelling carriage does not proceed to the data transmission of relay station in the subframe corresponding with the relay uplink subframe, only dispatch travelling carriage to the data transmission of base station.
Figure 13 shows tdd frame structure 3 shown in Figure 5, and there is the data communication that is relayed to the base station in certain 10ms frame, when not existing the base station to arrive the data communication of relaying, and the scheduling of carrying out for solving the ACK/NACK collision problem.In the example of Figure 13, after relay station was issued base station data, the base station was not to relaying feeding back ACK/NACK.As shown in figure 13, subframe # 3 among the frame # 1 is as the relay uplink subframe, be used for transmitting RS to the data of BS, be among the subframe # 3, relaying is in the state of sending out, because subframe # 7 and subframe # 8 correspondence subframe # 3 feeding back ACK/NACK in frame # 1 among the frame # 0, do not send to the data of travelling carriage so do not dispatch relay station among the frame # 0 among subframe # 7 and the subframe # 8, only dispatch the base station to the data transmission of travelling carriage.
Figure 14 shows for tdd frame structure 3 shown in Figure 5, and certain 10ms frame exists relay station to the data communication of base station, when not existing the base station to arrive the data communication of relay station, and the scheduling of carrying out for solving the ACK/NACK collision problem.After relay station was issued base station data, the base station can be to relaying feeding back ACK/NACK, and as shown in figure 14, the subframe #3 among the frame #1 is used for transmitting RS to the data of BS as the relay uplink subframe, and namely among the subframe #3, relaying is in the state of sending out.With identical among Figure 12, because subframe #7 and subframe #8 correspondence subframe #3 feeding back ACK/NACK in frame #1 among the frame #0 do not send so do not dispatch the data that are relayed to travelling carriage among subframe #7 and the subframe #8 in frame #0, only dispatch the base station and send to the data of travelling carriage.In addition, because after RS sends data to BS in the subframe #3 of frame #1, according to standard code, BS need to be in the subframe #8 of frame #1 feeding back ACK/NACK, be that RS is in the receipts state at the subframe #8 of frame #1, so do not dispatch RS to the data transmission of UE, only dispatch BS to the data transmission of UE.
Figure 15 shows the tdd frame structure 3 of the second execution mode, and there is the data communication that is relayed to the base station in certain 10ms frame, when not existing the base station to arrive the data communication of relay station, and the scheduling of carrying out for solving the ACK/NACK collision problem.After relay station is issued base station data, the base station can be to relay station feeding back ACK/NACK, as shown in figure 15, subframe # 7 is configured to designed specific sub-frame among the frame # 0, is used for sending RS to the data of BS, after BS receives data, appoint in the subframe # 5 of frame # 1 that by BS to RS feeding back ACK/NACK, namely RS is in the receipts state at subframe # 5, notify this subframe of travelling carriage # 5 this moment is the MBSFN subframe, do not dispatch RS to the data transmission of UE, only dispatch BS to the data transmission of UE.
On the other hand, according to other execution modes of the present invention, when judging the data of only having base station transmission relay station or only having relay station to send to the data of base station, also can between relay station and base station, adopt relatively simple frame structure.
Figure 16 shows LTE tdd frame structure 3, and certain 10ms frame exists the base station to arrive the data communication of relay station, when not having relay station to the data communication of base station, and the scheduling of adopting for solving the ACK/NACK collision problem.The base station is after optional downlink relay link is issued the relay station data, relay station can be to base station feedback ACK/NACK, as shown in figure 15, subframe # 9 among the frame # 0 is as the downlink relay link subframe, be used for transmitting BS to the data of RS, after RS receives data, according to standard code, need to the subframe # 4 in frame # 1 in by relay station to base station feedback ACK/NACK.Be among the subframe # 4, relay station is in the state of sending out, so do not dispatch travelling carriage this moment to the data transmission of relay station, only dispatches travelling carriage to the data transmission of base station.
Should be noted herein, because the subframe # 9 feedback of the ACK/NACK of corresponding any sub-frame of uplink not among the frame # 0, so the subframe scheduling before the subframe # 9 is unfettered.
In this execution mode, whether the judgment unit judges relay station has the signal (such as ACK/NACK) that will send to the base station, scheduling unit is dispatched (scheduling 4), so that when relay station has the signal that sends to the base station, make the travelling carriage can be to the relay station transmitted signal, particularly, BS to RS at a certain descending sub frame, the transmission data send, this descending sub frame of notice travelling carriage is the MBSFN subframe, and dispatch, thereby travelling carriage does not transmit data during the subframe of the feedback that transmits the data that transmit for this descending sub frame.
Figure 17 shows for LTE tdd frame structure 3, certain 10ms frame exists relay station to the data communication of base station, when not existing the base station to arrive the data communication of relay station, the scheduling of adopting for solving the ACK/NACK collision problem, after having considered that relay station is issued base station data, the base station can be to relay station feeding back ACK/NACK.As shown in figure 17, subframe # 4 among the frame # 1 is as the relay uplink subframe, be used for transmitting RS to the data of BS, be among the subframe # 4, relay station is in the state of sending out, because subframe # 9 correspondence subframe # 4 feeding back ACK/NACK in frame # 1 among subframe # 0 and the frame # 0 among the frame # 1, do not send to the data of relay station so in frame # 1, do not dispatch travelling carriage among subframe # 0 and the frame # 0 among the subframe # 9, only dispatch the base station to the data transmission of travelling carriage.
In this execution mode of the present invention, the dispatching method in a kind of base station comprises determining step, judges the relay station data whether oriented base station sends; Scheduling step (scheduling 5), when judging relay station the data that will send the base station to arranged, optional a certain sub-frame of uplink is as the relay uplink subframe, make relay station in this sub-frame of uplink, send data, and dispatch and make this relay station in the subframe that this sub-frame of uplink carries, not send to the downlink data of travelling carriage at its feedback information, and dispatch and make travelling carriage during this sub-frame of uplink, not send upstream data to described relay station.
Figure 18 shows LTE tdd frame structure 3, certain 10ms frame exists relay station to the data communication of base station, when not existing the base station to arrive the data communication of relay station, the dispatching method that adopts for solving the ACK/NACK collision problem, after the method had considered that relay station is issued base station data, the base station can be to relay station feeding back ACK/NACK.As shown in figure 18, subframe #4 among the frame #1 is as the relay uplink subframe, be used for transmitting RS to the data of BS, be among the subframe #4, relay station is in the state of sending out, with identical among Fig. 9, owing to subframe #9 correspondence subframe #4 feeding back ACK/NACK in frame #1 among subframe #0 among the frame #1 and the frame #0, so in frame #1, do not dispatch travelling carriage among subframe #0 and the frame #0 among the subframe #9 to the data transmission of relay station, only dispatch the base station to the data transmission of travelling carriage.In addition, because after BS sends data to RS among the subframe #4 in frame #1, according to standard code, RS need to be in the subframe #0 of frame #2 feeding back ACK/NACK, be that RS is in the state of sending out at the subframe #0 of frame #2, so do not dispatch RS to the data transmission of UE, only dispatch BS to the data transmission of UE.
That is, in this execution mode of the present invention, the dispatching method in a kind of base station comprises determining step, judges the relay station data whether oriented base station sends; Scheduling step (scheduling 6), when judging relay station the data that will send the base station to arranged, optional a certain sub-frame of uplink is as the relay uplink subframe, make relay station in this sub-frame of uplink, send data, and dispatch the downlink data that makes this relay station in the subframe that this sub-frame of uplink carries, not send to travelling carriage at its feedback information, and the dispatching of relays station make relay station no longer carry in the descending sub frame of the feedback of carrying in this sub-frame of uplink to the travelling carriage transmitted signal.The base station is also dispatched and is made travelling carriage not send upstream data to described relay station during this sub-frame of uplink.
Figure 19 has schematically shown the flow chart of the dispatching method of another embodiment of the present invention.
As shown in figure 19, at first, the judging unit 603 of base station judges whether the base station will send data to relay station and judge whether relay station will send data to base station (S700).If the base station will send data to relay station and relay station will send data to base station (S701, be), then at step S704 ', the scheduling unit 604 of base station is dispatched, make travelling carriage not send upstream data in relay uplink subframe (subframe 3), and make relay station in downlink relay link subframe (subframe 8), not send to the data (scheduling 1 ') of travelling carriage, and make the data that send to relay station in downlink relay link that transmitting element 601 determining or the specific sub-frame at step S705, and make receiving element 602 receive data from relay station in specific sub-frame at step S706 '.Relay station does not have data will send to base station (S702 if the base station has data will send to relay station, be), then at step S707 ', the scheduling unit 604 of base station is dispatched (scheduling 4), and in step S708, in the MBSFN subframe, send data to relay station.Relay station has data will send to base station (S703 if the base station does not have data will send to relay station, be), then because relay station is in the transmission state in this subframe, thereby the scheduling unit 604 of base station is dispatched (scheduling 5 or 6), make travelling carriage not send upstream data (S709) in the relay uplink subframe, then in the relay uplink subframe, receive the data (S710) from relay station.If the base station does not have data will send to relay station and relay station does not have data will send to the base station, then the scheduling unit 604 of base station is not dispatched especially, and carries out routine scheduling (S711) same as the prior art.
The above device of the present invention can be realized by hardware, also can be realized by combination of hardware software.The present invention relates to such computer-readable program, when this program is performed by the logical block of base station, can make this base station realize base station or component parts mentioned above, or make this base station realize the whole bag of tricks or step mentioned above.The present invention relates to such computer-readable program, when this program is performed by the logical block of relay station, can make this relay station realize relay station or component parts mentioned above, or make this relay station realize the whole bag of tricks or step mentioned above.The invention still further relates to be used to the storage medium of storing above program, such as hard disk, disk, CD, DVD, flash etc.
Specific embodiment of the present invention has more than been described.Certainly, those of ordinary skill in the art understands that more arrangement of the present invention and combination are possible.Therefore, all changes in claims spirit and scope of the present invention, modifications and variations are all due among protection scope of the present invention.
Claims (10)
1. base station, this base station comprises transmitting element (601), receiving element (602), judging unit (603) and scheduling unit (604), wherein
Described judging unit (603) is used for judging whether relay station has the signal that will send to this base station;
Scheduling unit (604) is dispatched receiving element (602) according to the judged result of judging unit (603), thereby when described relay station has the signal that will send to this base station, make described receiving element (602) as the relay uplink subframe, for the described signal that receives during transmission uplink sub-frames one or more uplink sub-frames in addition for the reception feedback of the data that transmit on the absolute descending access link subframe from described relay station, wherein, described absolute descending access link subframe is can only be as the subframe of descending access link subframe, and
Described scheduling unit is also dispatched travelling carriage and relay station, thereby described travelling carriage does not send data to described relay station during described relay uplink subframe.
2. base station according to claim 1 is characterized in that,
Described judging unit (603) is used for judging whether described base station has the signal that will send to described relay station;
Scheduling unit (604) is dispatched transmitting element (601) according to the judged result of judging unit (603), thereby when in described base station the signal that will send to described relay station being arranged, make described transmitting element as the downlink relay link subframe, it receives feedback and send described signal to described relay station during one or more downlink subframe that the subframe corresponding with this relay uplink subframe transmits
Described scheduling unit is notified described travelling carriage: this downlink subframe as described downlink relay link subframe is the broadcast multi-broadcasting Single frequency network subframe, and
Described scheduling unit is dispatched described relay station, thereby described relay station does not send data to travelling carriage during described downlink relay link subframe.
3. base station according to claim 1 is characterized in that, the signal that described relay station will send to described base station comprises the data-signal that will send to described base station and the receiving feedback signals that need send to described base station.
4. base station according to claim 2 is characterized in that, the signal that described base station will send to described relay station comprises the data-signal that will send to described relay station and the receiving feedback signals that need send to described relay station.
5. base station according to claim 1 is characterized in that, described scheduling unit is also dispatched, thereby
When described relay station has the signal that will send to this base station, make described receiving element (602) in as the downlink subframe outside absolute descending access link subframe specific sub-frame, described, receive described signal from this relay station, and
Described scheduling unit is notified described relay station: in the downlink subframe corresponding with described specific sub-frame, send described signal,
Described scheduling unit is notified described mobile radio station: the downlink subframe corresponding with described specific sub-frame is the broadcast multi-broadcasting Single frequency network subframe.
6. base station according to claim 5 is characterized in that, comprises in the described specific sub-frame that described base station is to the period of described travelling carriage transmitted signal.
7. base station according to claim 6 is characterized in that, comprises in the described specific sub-frame be used to making described base station be converted to the conversion period of accepting state and/or make described base station be converted to the conversion period of transmission state from accepting state from the transmission state.
8. base station according to claim 6 is characterized in that, described base station also comprises regulon, and described regulon is used for regulating the duration that base station described in the described specific sub-frame is in accepting state.
9. base station according to claim 8 is characterized in that, described regulon is also regulated and made described base station be converted to the conversion period of accepting state and/or make described base station be converted to the duration of the conversion period of transmission state from accepting state from the transmission state.
10. base station, this base station comprises transmitting element (601), receiving element (602), judging unit (603) and scheduling unit (604), wherein
Described judging unit (603) is used for judging whether relay station has the signal that will send to described base station;
Scheduling unit (604) is dispatched receiving element (602) according to the judged result of judging unit (603), thereby in as the downlink subframe outside descending access link subframe specific sub-frame, absolute, receive the described signal from this relay station, wherein, described absolute descending access link subframe is can only be as the subframe of descending access link subframe, and
Described scheduling unit is notified described relay station: in the downlink subframe corresponding with described specific sub-frame, send described signal,
Described scheduling unit is notified mobile radio station: the downlink subframe corresponding with described specific sub-frame is the broadcast multi-broadcasting Single frequency network subframe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910008197 CN101835194B (en) | 2009-03-13 | 2009-03-13 | Base station |
| PCT/CN2010/070953 WO2010102564A1 (en) | 2009-03-13 | 2010-03-10 | Base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910008197 CN101835194B (en) | 2009-03-13 | 2009-03-13 | Base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101835194A CN101835194A (en) | 2010-09-15 |
| CN101835194B true CN101835194B (en) | 2013-01-23 |
Family
ID=42719081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910008197 Expired - Fee Related CN101835194B (en) | 2009-03-13 | 2009-03-13 | Base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101835194B (en) |
| WO (1) | WO2010102564A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10091688B2 (en) | 2012-12-07 | 2018-10-02 | Futurewei Technologies, Inc. | Systems and methods for packet relaying |
| CN107612717A (en) * | 2017-08-28 | 2018-01-19 | 深圳市盛路物联通讯技术有限公司 | relay automatic routing method and gateway |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141171A (en) * | 2006-09-08 | 2008-03-12 | 华为技术有限公司 | Radio communication device, system and method |
| CN101166055A (en) * | 2006-10-18 | 2008-04-23 | 华为技术有限公司 | Multi-hop relay method and multi-hop relay system |
| CN101222264A (en) * | 2007-01-08 | 2008-07-16 | 三星电子株式会社 | Apparatus and method for transmitting frame information in multi-hop relay broadband wireless access communication system |
-
2009
- 2009-03-13 CN CN 200910008197 patent/CN101835194B/en not_active Expired - Fee Related
-
2010
- 2010-03-10 WO PCT/CN2010/070953 patent/WO2010102564A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141171A (en) * | 2006-09-08 | 2008-03-12 | 华为技术有限公司 | Radio communication device, system and method |
| CN101166055A (en) * | 2006-10-18 | 2008-04-23 | 华为技术有限公司 | Multi-hop relay method and multi-hop relay system |
| CN101222264A (en) * | 2007-01-08 | 2008-07-16 | 三星电子株式会社 | Apparatus and method for transmitting frame information in multi-hop relay broadband wireless access communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010102564A1 (en) | 2010-09-16 |
| CN101835194A (en) | 2010-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102474338B (en) | Method for prioritizing operation of relay node in a wireless communication system and apparatus for the same | |
| CN105406914B (en) | Control the transmission of information in the cordless communication network with relay node | |
| CN102843771B (en) | Method for information transmission in TDD system, user equipment and base station | |
| CN102415188B (en) | Relaying data between base station and user equipment | |
| CN103582008A (en) | Method for transmitting HARQ-ACK feedback information in service flow self-adaption type TDD system | |
| CN102573074B (en) | Method, system and apparatus for semi-persistent scheduling on backhaul link, and receiving method and apparatus thereof | |
| CN103384393A (en) | PUSCH transmission method in service flow self-adaptation system | |
| WO2010118705A1 (en) | Resource scheduling method and system, base station and relay node | |
| EP2058969B1 (en) | Apparatus and method for ACK channel transmission in wireless relay communication system | |
| KR20210035901A (en) | Low Latency HARQ Protocol for URLLC Service | |
| JP6224743B2 (en) | Relay method and node in wireless communication system | |
| CN101814944B (en) | Data transmission method, system and device | |
| CN101888661B (en) | Wireless communication method, system and device | |
| CN101299821B (en) | Method for scheduling upstream service of TDD communication system | |
| CN102064877B (en) | Subframe scheduling information notifying method and device | |
| CN101867944B (en) | Method and system for scheduling resources, evolved node B (eNB) and relay node (RN) | |
| CN102209392B (en) | A kind of descending control resource allocation methods and equipment | |
| CN102215060A (en) | Configuration and indication method of relay sub-frames as well as method and system for realizing relay transmission | |
| CN101835194B (en) | Base station | |
| CN102474339B (en) | Relaying node, time division duplex communication system and communication method | |
| CN101442357A (en) | Method and system for wireless transmission adopting Relay supported frame structure | |
| CN102158323A (en) | Backhaul signal relay transmission method | |
| US8824379B2 (en) | System and method for trasmitting/receving a signal in a communication system | |
| WO2008133416A1 (en) | System and method for transmitting downlink schedule in wimax/wibro relay system | |
| CN101257439B (en) | Multi-jumping relay time division duplexing self-adapting transmission method and apparatus in mobile communication network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20210313 |