CN102130714A - Method and device for configuring downlink timing of relay node (RN) equipment - Google Patents
Method and device for configuring downlink timing of relay node (RN) equipment Download PDFInfo
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- CN102130714A CN102130714A CN2010100345140A CN201010034514A CN102130714A CN 102130714 A CN102130714 A CN 102130714A CN 2010100345140 A CN2010100345140 A CN 2010100345140A CN 201010034514 A CN201010034514 A CN 201010034514A CN 102130714 A CN102130714 A CN 102130714A
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Abstract
The invention discloses a method for configuring downlink timing of relay node (RN) equipment, which is used for realizing the configuration of the downlink timing of the RN equipment in a time division duplex (TDD) relay network. In the method, the RN equipment receives a signaling which contains network timing demand information and is sent by a master base station, and configures a downlink timing scheme in accordance with the network timing demand information. The device comprises a receiving unit, and a configuration unit, wherein the receiving unit is used for receiving the signaling which contains the network timing demand information and is sent by the master base station; and the configuration unit is used for configuring the downlink timing scheme in accordance with the network timing demand information.
Description
Technical field
The present invention relates to communication technical field, be meant descending timing configured method of a kind of via node (RN) equipment and device especially.
Background technology
(Long Term Evolution-Advanced, LTE-A) system will adopt the method for relaying (Relay) cooperation transmission to improve the service quality and the Extended Cell covering of Cell Edge User to advanced Long Term Evolution.Referring to shown in Figure 1, comprise in the LTE-A system: base station and via node (RN) equipment.With RN equipment the eNB of wireless connections is arranged, be called dominant base (Donor-eNB, DeNB); Be present in the entity between DeNB and the UE, be called (Relay-Node), be abbreviated as RN equipment; The UE that carries out data interaction with RN equipment is called Relay-UE, is abbreviated as R-UE; The UE direct and DeNB carries out data interaction is called grand UE.
Interface between RN equipment and the DeNB is the Un interface; Interface between UE and the RN equipment is the Uu interface.Radio Link based on the mobile communication system of Relay has three, and Radio Link comprises: back haul link (Backhaul link), access link (Access link), direct projection link (Direct link).Back haul link is and Un interface link corresponding; Access link is and Uu interface link corresponding; The direct projection link is the link that DeNB and grand UE carry out transfer of data.
Therefore consider the signal interference-limited of radio communication, three links need use the Radio Resource of quadrature.Because the transceiver of via node is a half-duplex time-division mode of operation, back haul link takies different time slots with access link in the tdd frame structure, but direct projection link and back haul link are can be coexistent, as long as its running time-frequency resource quadrature.
The propagation delay between DeNB and the RN equipment is considered in the descending timing of RN equipment as shown in Figure 2, behind the descending fixed response time of RN equipment in the descending timing of DeNB.Need receive/send under the situation about switching at RN equipment, two OFDM symbols provide switching time as GP.
In order to save resource overhead, can adopt the constant time lag scheme.As shown in Figure 3, except propagation delay, fixed delay behind the descending fixed response time of RN equipment, this fixed delay are not less than the length (according to LTE TDD system, GP length is 20us) of GP, and then OFDM symbol 13 can be used for the back haul link downlink transfer.
The synchronisation requirement of HeNB is defined as HeNB and other HeNB, perhaps with the poor of the initial timing of radio frames that intersects between the eNB that covers arranged, measure at the transmitting antenna connector.Except HeNB carry out that network monitoring obtains synchronously and propagation distance greater than 500 meters situation, synchronisation requirement need be set to 3us in other cases.This synchronisation requirement and the synchronous technology that adopts are irrelevant, GPS for example, IEEE1588v2, network monitoring etc.HeNB obtain by network monitoring synchronously and propagation distance greater than 500 meters situation under, HeNB and selectedly need additionally add 1.33us as the propagation delay time between the sub-district of network monitoring synchronisation source is as synchronisation requirement, for example, transmission range is 2.6km, and synchronisation requirement is 10us.
For time division duplex (TDD) relaying (relay) network, also there is not the descending timing configured scheme of RN equipment at present.
Summary of the invention
The invention provides descending timing configured method of a kind of RN equipment and device, in order to realize the descending timing problems of RN equipment in the TDD relay network.
The descending timing configured method of a kind of RN equipment that the embodiment of the invention provides, this method comprises:
RN equipment is received the signaling that contains the network timing demand information that dominant base sends, according to described network timing demand information configurating downlink timing scheme.
A kind of descending timing configured method that the embodiment of the invention provides, this method comprises:
Dominant base sends the signaling that contains the network timing demand information by the RN equipment of its service in the sub-district of administration, described network timing demand information is used for the descending timing scheme of RN equipment disposition.
The descending timing configured device of a kind of RN equipment that the embodiment of the invention provides comprises:
Receiving element is used to receive the signaling that contains the network timing demand information that dominant base sends;
Dispensing unit is used for according to described network timing demand information configurating downlink timing scheme.
A kind of descending timing configured device that the embodiment of the invention provides comprises:
Determining unit is used for determining the timing demand information of RN equipment;
Transmitting element, the RN equipment that is used in the sub-district of administration sends the signaling that contains the network timing demand information, and described network timing demand information is used for the descending timing scheme of RN equipment disposition.
In embodiments of the present invention, dominant base is by signaling RN device network timing demand, and RN equipment adopts different timing schemes according to demand.
Description of drawings
Fig. 1 is the LTE-A system schematic;
Fig. 2 is the descending timing schematic diagram of RN equipment;
Fig. 3 is the descending timing schematic diagram of the RN equipment of additional fastening time delay;
Fig. 4 realizes the schematic flow sheet of descending timing configured for the embodiment of the invention;
Fig. 5 a is the RACH transmission schematic diagram of RN equipment 1;
Fig. 5 b is the RACH transmission schematic diagram of RN equipment 2;
Fig. 6 realizes the schematic representation of apparatus of descending timing configured at the dominant base side for the embodiment of the invention;
Fig. 7 realizes the schematic representation of apparatus of descending timing configured at the RN equipment side for the embodiment of the invention.
Embodiment
In order to realize the descending timing configured problem of the RN equipment in the TDD relay network, dominant base need send the information that contains the network timing demand to RN equipment, RN equipment is received the signaling that contains the network timing demand information that dominant base sends, according to described network timing demand information configurating downlink timing scheme.
Referring to shown in Figure 4, the embodiment of the invention realizes that the method for descending timing configured may further comprise the steps:
Step 401: the RN equipment of dominant base in the sub-district of administration sends the signaling that contains the network timing demand information.
The information that described network timing demand information can regularly align for: descending timing that requires RN equipment and dominant base, the also information that can regularly align for: descending timing that does not require RN equipment and dominant base.
The described signaling that contains the network timing demand information can also can be high-level signaling for containing the broadcast of network timing demand information.
If requiring the descending timing by all RN equipment of dominant base service in the sub-district regularly aligns with dominant base, or the descending timing that does not require all RN equipment regularly aligns with dominant base, then can the network timing demand information be sent to RN equipment by broadcast.
If to the requirement difference of the different RN equipment in the sub-district, then dominant base is determined the Network Synchronization demand information by each RN equipment correspondence of its service respectively, and by high-level signaling the network timing demand information is sent to corresponding RN equipment respectively.Specifically can realize like this: dominant base determines in the sub-district of administration and transmission range by each RN equipment of its service, and determines the network timing demand information of corresponding RN equipment according to that determine and transmission range each RN equipment; Dominant base sends to each RN equipment and contains the regularly high-level signaling of demand information of map network.Here, dominant base can according to the random access channel preamble that described each RN equipment sends determine and corresponding RN equipment between transmission range.What note is that aforesaid way only is an embodiment, can also determine the timing demand information of each RN equipment by other modes such as pre-plannings.
Step 402:RN equipment is received the signaling that contains the network timing demand information that dominant base sends, according to described network timing demand information configurating downlink timing scheme.
If the described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service, and when the network timing demand information is: require the descending timing and the information that dominant base regularly aligns of RN equipment, receive that then the descending timing of all RN equipment of described network timing demand information is regularly alignd with dominant base.When the network timing demand information is: do not require the descending timing and the information that dominant base regularly aligns of RN equipment, receive that then the descending timing of the RN equipment of described network timing demand information is regularly alignd with dominant base, or do not line up.The descending timing of the RN equipment that descending timing or not is not alignd with dominant base can adopt additional fastening time delay scheme to save resource overhead.
If the described signaling that contains the network timing demand information is the high-level signaling that dominant base sends respectively to each the RN equipment by its service, and the network timing demand information in described high-level signaling is: require the descending timing and the information that dominant base regularly aligns of RN equipment, receive that then the descending timing of the RN equipment of this high-level signaling is regularly alignd with dominant base; Network timing demand information in described high-level signaling is: do not require the descending timing and the information that dominant base regularly aligns of RN equipment, receive that then the descending timing of the RN equipment equipment of this high-level signaling is regularly alignd with dominant base, or do not line up.The descending timing of the RN equipment that descending timing or not is not alignd with dominant base can adopt additional fastening time delay scheme to save resource overhead.
Lift specific embodiment below and describe technical scheme of the present invention in detail.
The network based timing synchronisation requirement of TDD relay can be divided into three kinds.
First kind: require the whole network synchronous, regularly align with dominant base by the descending timing of all RN equipment of dominant base service;
Second kind: do not require that the whole network is synchronous, do not need regularly to align with dominant base by the timing of the RN equipment of dominant base service;
The third: requirement is regularly alignd with dominant base by the descending timing of the part RN equipment of dominant base service.
For a RN equipment, may be linked into different networks, the Network Synchronization demand also may be inequality, and RN equipment need be supported above-mentioned three kinds of situations simultaneously.
Dominant base can be by sending signaling RN device network synchronisation requirement information, and which kind of descending timing scheme RN equipment determines to adopt according to the Network Synchronization demand.If require the descending timing of RN equipment regularly to align with dominant base, then the descending timing of RN equipment is regularly alignd with dominant base; If requiring with dominant base, the descending timing of RN equipment regularly do not align, the descending timing of RN equipment can regularly align with dominant base or not line up, descending timing can be adopted additional fastening time delay scheme with the RN equipment that dominant base does not regularly line up, and saves resource overhead.
From the angle of whole sub-district, for first kind of situation and second kind of situation, dominant base can be by all RN device network synchronisation requirement information in the broadcast notifying cell, and which kind of timing mode all RN equipment determine to adopt according to the Network Synchronization demand.
For the third situation, dominant base is notified each RN device network synchronisation requirement information respectively by exclusive high-level signaling, and each RN equipment determines whether regularly to align with dominant base according to the signaling that receives.Can determine which RN equipment need be regularly synchronous with dominant base by the network pre-planning, also can be by determining that with the HeNB scheme that regularly demand is identical which RN equipment and dominant base are regularly synchronously, for example: suppose all RN website stationary distribution, dominant base can determine which RN equipment need be regularly synchronous with dominant base according to the timing demand of HeNB, if promptly the transmission range between dominant base and the RN equipment is not more than 500m, dominant base is not more than 3us with the difference that the timing of RN equipment is alignd; If the transmission range between dominant base and the RN equipment, does not require that the descending timing of RN equipment is regularly alignd with dominant base greater than 500m.
Dominant base can pass through the transmission of the RACH (Random Access Channel, Random Access Channel) of different RN equipment, determines the transmission range of different RN equipment, and then determines which RN equipment need be regularly synchronous with dominant base.
For example: RN equipment 1 is positioned at the inside of dominant base sub-district, and RN equipment 2 is positioned at the edge of dominant base sub-district.Shown in Fig. 5 a and 5b, RN equipment 1 and RN equipment 2 send random access guiding to dominant base respectively, and dominant base is determined the transmission range of RN equipment respectively according to receiving leading propagation delay time difference.Suppose RN equipment 1 apart from the transmission range of dominant base less than 500m, RN equipment 2 apart from the transmission range of dominant base greater than 500m, then dominant base is by exclusive high-level signaling, such as RRC (Radio ResourceControl, Radio Resource control) signaling RN equipment 1 need regularly align with dominant base, and notice RN equipment 2 does not need regularly to align with dominant base.
For the above-mentioned Network Synchronization demand information that carries by broadcast or high-level signaling, can be by two kinds of timings of data separation alignment pattern of 1bit, suppose " 0 " representative need regularly align with dominant base, " 1 " representative does not need regularly to align with dominant base, and broadcast or high-level signaling need carry 1bit synchronisation requirement information and be notified to RN equipment.If it is 1 that RN Equipment Inspection high-level signaling obtains the synchronisation requirement information field, then its descending timing does not need regularly to align with dominant base, can adopt the additional fastening time delay, with fixed delay behind the descending fixed response time of RN equipment, is used for saving resource overhead.
Referring to shown in Figure 6, the embodiment of the invention comprises at the descending timing configured device of base station side: determining unit 61 and transmitting element 62.
Determining unit 61 is used for determining the timing demand information of RN equipment;
Transmitting element 62, the RN equipment that is used in the sub-district of administration sends the signaling that contains the network timing demand information, and described network timing demand information is used for the descending timing scheme of RN equipment disposition.
The described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service.Described network timing demand information is: the information that the descending timing that requires RN equipment and dominant base regularly align, or, the information that the descending timing that does not require RN equipment and dominant base regularly align.
Described determining unit is used to determine in the sub-district of administration the network timing demand information by the RN equipment of dominant base service; Then described transmitting element is used for sending the broadcast that contains the network timing demand information to all RN equipment, or sends the high-level signaling that contains map network timing demand information respectively to each RN equipment.When determining unit need be determined the network timing demand of each RN equipment, can determine by the transmission range of dominant base and RN equipment.
Referring to shown in Figure 7, the embodiment of the invention realizes that at the RN equipment side descending timing configured device comprises:
Receiving element 71 is used to receive the signaling that contains the network timing demand information that dominant base sends;
Dispensing unit 72 is used for according to described network timing demand information configurating downlink timing scheme.
The described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service.
Described dispensing unit if be used for the network timing demand information is: require the descending timing and the information that dominant base regularly aligns of RN equipment, then descending timing is regularly alignd with dominant base.
Described dispensing unit if be used for the network timing demand information is: do not require the descending timing and the information that dominant base regularly aligns of RN equipment, then descending timing is regularly alignd with dominant base, or do not line up.
Descending timing is not adopted additional fastening time delay scheme with the RN equipment that dominant base regularly aligns, and saves resource overhead.
The described signaling that contains the network timing demand information high-level signaling that to be dominant base send respectively to each RN equipment of its service.
Described dispensing unit, the network timing demand information that is used for when described high-level signaling is: require the descending timing and the information that dominant base regularly aligns of RN equipment, descending timing is regularly alignd with dominant base; Network timing demand information in described high-level signaling is: do not require the descending timing and the information that dominant base regularly aligns of RN equipment, then descending timing is regularly alignd with dominant base, or do not line up.
In embodiments of the present invention, dominant base is by signaling RN device network timing demand, and RN equipment adopts different timing schemes according to demand.And,, can adopt different signalings at heterogeneous networks timing demand.In a sub-district, different RN equipment may can adopt different timing schemes, if adopt single timing scheme, may cause the asynchronous or wasting of resources of network, adopt the solution of the present invention to make different RN equipment adopt different timing schemes by timing demand classification RN equipment.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (21)
1. descending timing configured method of via node RN equipment is characterized in that this method may further comprise the steps:
RN equipment receives the signaling that contains the network timing demand information that dominant base sends, and according to described network timing demand information configurating downlink timing scheme.
2. method according to claim 1 is characterized in that, the described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service.
3. method according to claim 2 is characterized in that, according to described network timing demand information configurating downlink timing scheme, comprising:
If the network timing demand information is: the information that the descending timing that requires RN equipment and dominant base regularly align, then regularly align with dominant base by the descending timing of all RN equipment of dominant base service.
4. method according to claim 2 is characterized in that, according to described network timing demand information configurating downlink timing scheme, comprising:
If the network timing demand information is: the information that the descending timing that does not require RN equipment and dominant base regularly align, then regularly align with dominant base, or do not line up by the descending timing of the RN equipment of dominant base service.
5. method according to claim 1 is characterized in that, the described signaling that contains the network timing demand information is the high-level signaling that dominant base sends to each the RN equipment by its service respectively.
6. method according to claim 5, it is characterized in that, network timing demand information in described high-level signaling is: require the descending timing and the information that dominant base regularly aligns of RN equipment, receive that then the descending timing of the RN equipment of this high-level signaling is regularly alignd with dominant base;
Network timing demand information in described high-level signaling is: do not require the descending timing and the information that dominant base regularly aligns of RN equipment, receive that then the descending timing of the RN equipment of this high-level signaling is regularly alignd with dominant base, or do not line up.
7. descending timing configured method is characterized in that this method may further comprise the steps:
Dominant base sends the signaling that contains the network timing demand information by the RN equipment of its service in the sub-district of administration, described network timing demand information is used for the descending timing scheme of RN equipment disposition.
8. method according to claim 7 is characterized in that, the described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service.
9. method according to claim 8 is characterized in that, described network timing demand information is: the information that the descending timing that requires RN equipment and dominant base regularly align, or, the information that the descending timing that does not require RN equipment and dominant base regularly align.
10. method according to claim 7 is characterized in that, dominant base sends the signaling that contains the network timing demand information by the RN equipment of its service in the sub-district of administration, comprising:
Dominant base is determined in the sub-district of administration the network timing demand information by each RN equipment of its service, and sends to each RN equipment and to contain the regularly high-level signaling of demand information of map network.
11. method according to claim 10 is characterized in that, described network timing demand information is: the information that the descending timing that requires RN equipment and dominant base regularly align, or, the information that the descending timing that does not require RN equipment and dominant base regularly align.
12. the descending timing configured device of RN equipment is characterized in that this device comprises:
Receiving element is used to receive the signaling that contains the network timing demand information that dominant base sends;
Dispensing unit is used for according to described network timing demand information configurating downlink timing scheme.
13. device according to claim 12 is characterized in that, the described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service.
14. device according to claim 13 is characterized in that, described dispensing unit if be used for the network timing demand information is: require the descending timing and the information that dominant base regularly aligns of RN equipment, then descending timing is regularly alignd with dominant base.
15. device according to claim 13, it is characterized in that described dispensing unit if be used for the network timing demand information is: the information that the descending timing that does not require RN equipment and dominant base regularly align, then descending timing is regularly alignd with dominant base, or do not line up.
16. device according to claim 12 is characterized in that, the described signaling that contains the network timing demand information is the high-level signaling that dominant base sends to each the RN equipment by its service respectively.
17. device according to claim 16, it is characterized in that, described dispensing unit, the network timing demand information that is used for when described high-level signaling is: require the descending timing and the information that dominant base regularly aligns of RN equipment, descending timing is regularly alignd with dominant base; Network timing demand information in described high-level signaling is: do not require the descending timing and the information that dominant base regularly aligns of RN equipment, then descending timing is regularly alignd with dominant base, or do not line up.
18. a descending timing configured device is characterized in that this device comprises:
Determining unit is used for determining the timing demand information of RN equipment;
Transmitting element, the RN equipment that is used in the sub-district of administration sends the signaling that contains the network timing demand information, and described network timing demand information is used for the descending timing scheme of RN equipment disposition.
19. device according to claim 18 is characterized in that, the described signaling that contains the network timing demand information is the broadcast that dominant base sends to all the RN equipment by its service.
20. device according to claim 18 is characterized in that, described network timing demand information is: the information that the descending timing that requires RN equipment and dominant base regularly align, or, the information that the descending timing that does not require RN equipment and dominant base regularly align.
21. device according to claim 18 is characterized in that, described determining unit is used to determine in the sub-district of administration the network timing demand information by each RN equipment of dominant base service;
Then described transmitting element is used for sending the high-level signaling that contains map network timing demand information respectively to each RN equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100345140A CN102130714A (en) | 2010-01-19 | 2010-01-19 | Method and device for configuring downlink timing of relay node (RN) equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100345140A CN102130714A (en) | 2010-01-19 | 2010-01-19 | Method and device for configuring downlink timing of relay node (RN) equipment |
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| CN102130714A true CN102130714A (en) | 2011-07-20 |
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| CN2010100345140A Pending CN102130714A (en) | 2010-01-19 | 2010-01-19 | Method and device for configuring downlink timing of relay node (RN) equipment |
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Application publication date: 20110720 |