CN101932041A - Method and device for maintaining relay node connection - Google Patents
Method and device for maintaining relay node connection Download PDFInfo
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- CN101932041A CN101932041A CN2009101394781A CN200910139478A CN101932041A CN 101932041 A CN101932041 A CN 101932041A CN 2009101394781 A CN2009101394781 A CN 2009101394781A CN 200910139478 A CN200910139478 A CN 200910139478A CN 101932041 A CN101932041 A CN 101932041A
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Abstract
The invention discloses a method and a device for maintaining relay node connection. The method comprises the following steps of: after establishing the connection between a relay node and a service base station, maintaining uplink synchronization of the relay node and the service base station; and reserving a resource, which transmits a scheduling request, of the relay node. According to the technical scheme provided by the invention, a phenomenon that the arrival of uplink/downlink data in the connection state, which is caused by uplink asynchronization or no resource for transmitting the scheduling request, triggers a random access process can be avoided, so that the probability of the relay node in the connection state entering the random access process can be reduced, the influence on a terminal for managing the relay node is reduced, and a user data rate of a system is increased.
Description
Technical field
The present invention relates to the communications field, connect maintenance method and device in particular to a kind of via node.
Background technology
In radio honeycomb communication system, random access procedure (Random Access Procedure) is used to be in subscriber equipment (the User Equipment of idle condition (RRC_IDLE), abbreviate UE as) the initial access network, perhaps, the subscriber equipment and the network that are in connection status (RRC_CONNECTED) are realized synchronously, and are obtained resource allocation to carry out subsequent data communications.
In 3G (Third Generation) Moblie Long Term Evolution (Long Term Evolution abbreviates LTE as) system, below five kinds of incidents can trigger random access procedure: (1) idle condition initially inserts; (2) Radio Resource control (Radio Resource Control is called for short RRC) connection reconstruction; Initially insert after the wireless even road failure (Radio Link Failure abbreviates RLF as); (3) switch (Handover abbreviates HO as); (4) the connection status downlink data arrives; (5) the connection status upstream data arrives.After the random access procedure success, can carry out normal downlink or uplink transmission.Wherein, above-mentioned incident (4) is because due to the uplink loss, incident (5) is by uplink loss or is not used in transmission uplink scheduling request (Scheduling Request, abbreviation SR) due to Physical Uplink Control Channel (Physical Uplink Control Channel the is called for short PUCCH) resource.
The uplink loss of so-called terminal is meant that the upward signal of terminal arrives the base station outside the receive window of base station, causes the correctly upward signal of receiving terminal of base station, and causes the upward signal between the terminal to interfere with each other.For fear of uplink loss, each terminal is given according to the propagation delay time transmitting time lead between base station and each terminal in the base station, the opportunity that the Timing Advance that terminal sends according to the base station shifts to an earlier date or postpones uplink separately, thereby remedy the propagation delay time of terminal, make the upward signal of different terminals all within the receive window of base station, arrive the base station to the base station.The base station orders (timing advance command) to come the transmitting time lead by last line time in advance.Last line time has been ordered the dual mode transmission in advance, the one, by accidental access response (Random Access Response, abbreviate RAR as) message, the time that transmit this moment is absolute value, a kind of is by (the Media Access Control Element of medium access control unit, abbreviate MACE as), the time that transmit this moment is relative value.
In addition, the terminal preventive maintenance time is adjusted timer (time alignment timer abbreviates TAT as), and this timer normally moves the uplink synchronous of expression terminal, this timer expiry or also start the uplink loss of expression terminal.TAT is divided into two kinds of the special-purpose and cell-specific of UE, and to be the base station keep the duration of uplink synchronous by dedicated signaling notice terminal for the former, and the latter is that the base station is by the duration of system information by terminal maintenance uplink synchronous.Terminal is ordered in advance according to the last line time received and is started or restart TAT.
Under following two kinds of situations, the base station may not need to safeguard the uplink synchronous of UE:
(1) UE is configured to discontinuous reception (Discontinuous Reception is called for short DRX), and the DRX cycle of UE is configured to long period (long DRX cycle).When being in inactive state, UE does not monitor Physical Downlink Control Channel (Physical Downlink Control Channel, be called for short PDCCH), can't order in advance by time of reception, so the base station not transmitting time order the uplink synchronous of safeguarding this UE in advance;
(2) network side is known the information that UE does not move, and thinks that the propagation delay time between base station and the UE is constant, and it is constant that UE carries out the opportunity of uplink, thus the base station not transmitting time order the uplink synchronous of safeguarding this UE in advance.
SR is used for informing base station UE has data to go up transmission at Uplink Shared Channel (Uplink Shared Channel is called for short UL-SCH), and the request base station is that UE distributes available uplink radio resources.SR takies the PUCCH resource and sends, and distributes the PUCCH resource that sends SR that dual mode is arranged.A kind of is that UE is according to Physical Downlink Control Channel (Physical Downlink Control Channel, be called for short PDCCH) implicit (the Control Channel Element of some control channel units that shines upon, be called for short CCE) know the PUCCH resource, this PUCCH resource can only be used to send SR one time.Another kind is that the base station is that UE distributes the PUCCH resource that sends SR by dedicated signaling, comprises the PUCCH Resource Block, transmitting time, the maximum number of times of transmission that take.According to these configuration informations, UE sends SR according to certain cycle on the PUCCH of appointment resource.
In senior Long Term Evolution (Long-Term Evolution advance is called for short LTE-Advanced) standard, introduce wireless relay (Relay) technology, the coverage that is intended to Extended Cell, balanced load, the transmitting power of saving UE.Fig. 1 is the network architecture schematic diagram that utilizes the wireless relay technology.As shown in Figure 1, between original base station (Donor-eNB) and UE, increase some new via node (Relay-Node, be called for short RN), base station and via node are by wireless connections, wherein, the Radio Link between base station and the via node is back haul link (backhaul link), and interface is called the Un interface, Radio Link between the UE of via node and management is access link (access link), and interface is called the Uu interface.Relaying by via node is transmitted, and the distance of furthered antenna and UE can be improved the link-quality of UE, thereby improves the spectrum efficiency and the user data rate of system.
Yet, when the relaying node inserts at random, can't the office terminal, thus the professional of terminal that causes via node to be managed originally all interrupts, and influences the user data rate of system.In correlation technique, lack a kind of technology of entering random access procedure owing to via node that uplink loss or the acomia resource of serving capable dispatch request cause avoided.
Summary of the invention
At lacking a kind of problem of avoiding entering the technology of random access procedure owing to via node that uplink loss or the acomia resource of serving capable dispatch request cause in the correlation technique the present invention is proposed, for this reason, main purpose of the present invention is to provide a kind of via node connectivity scenario, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of via node to connect the maintenance method.
Connecting the maintenance method according to via node according to the present invention comprises: being connected between via node and serving BS keeps via node and serving BS uplink synchronous after setting up; And, reserve the resource that via node sends dispatch request.
Preferably, above-mentioned maintenance via node and serving BS uplink synchronous comprise: if the time is adjusted timer expiry, via node wait time of reception is ordered in advance; If the via node time that receives in the given time orders in advance, then via node is ordered its uplink time of adjustment in advance according to the time, and reboot time is adjusted timer, and feedback receives successful information ACK to the base station.
Preferably, adjacent twice transmission time interval of ordering in advance adjusted length of timer less than the time the above-mentioned time.
Preferably, the resource that above-mentioned reservation via node sends dispatch request be set up being connected between via node and serving BS during, make the via node that has relay function and be in connection status that the resource of transmission dispatch request be arranged all the time.
Preferably, the resource of the transmission dispatch request of above-mentioned reservation via node comprises: via node obtains the resource of the transmission dispatch request of reservation by dedicated signaling; Via node sends dispatch request in resource.
Preferably, above-mentioned dedicated signaling is one of following: increased the special-purpose cell of via node user terminal UE dedicated signaling, comprise UE dedicated signaling, the via node dedicated signaling of the cell that has increased the special-purpose value of via node, wherein, the UE dedicated signaling comprises: RRC connects reallocation message; Above-mentioned resource comprises: the frequency domain resource and the time-domain resource of the transmission dispatch request of reservation.
Preferably, above-mentioned frequency domain resource be following one of at least: the shared frequency domain resource of via node and subscriber equipment, the frequency domain resource of via node special use; Above-mentioned time-domain resource be following one of at least: the shared time-domain resource of via node and subscriber equipment, the time-domain resource of via node special use.
According to a further aspect in the invention, also provide a kind of via node to connect holding device.
Connecting holding device according to via node of the present invention comprises: maintenance unit and reservation unit, and wherein, maintenance unit is used to keep via node and serving BS uplink synchronous; Reserve the unit, be used to reserve the resource that via node sends dispatch request.
Preferably, above-mentioned maintenance unit comprises: judge module, keep module, processing module, wherein, judge module is used to judge that the via node time that whether receives in the given time orders in advance; Keep module, be used for adjusting under the situation of timer expiry in the time, the wait time of reception is ordered in advance; Processing module is used under the situation that the time that receives in the given time orders in advance, orders the uplink time of adjusting in advance according to the time, and reboot time is adjusted timer, and feedback receives successful information ACK and gives the base station.
Preferably, above-mentioned reservation unit comprises: acquisition module, sending module, and wherein, acquisition module is used for obtaining by dedicated signaling the resource of the transmission dispatch request of reservation; Sending module is used for sending dispatch request in resource.
By the present invention, at the uplink loss problem, proposed to keep the technical scheme of the uplink synchronous of the Un interface between via node and the serving BS, simultaneously, at the acomia problem of resource of serving capable dispatch request, proposed to remain in advance the technical scheme of resource of the transmission dispatch request of via node, in conjunction with technique scheme, the connection that can keep via node, thus the via node of reduction connection status enters the probability of random access procedure.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the network architecture schematic diagram that utilizes the wireless relay technology;
Fig. 2 is the flow chart that connects the maintenance method according to the via node of the embodiment of the invention;
Fig. 3 is the flow chart according to the example one of the embodiment of the invention;
Fig. 4 is the flow chart according to the example two of the embodiment of the invention;
Fig. 5 is the schematic diagram according to the example three of the embodiment of the invention;
Fig. 6 is the schematic diagram according to the example four of the embodiment of the invention;
Fig. 7 is the structured flowchart that connects holding device according to the via node of the embodiment of the invention;
Fig. 8 is that via node connects the structured flowchart of holding device according to the preferred embodiment of the invention.
Embodiment
Functional overview
In the LTE system, uplink loss or the acomia physical uplink control channel resource of serving capable dispatch request can trigger via node and enter random access procedure, thereby cause the service disconnection of the terminal of via node management.Therefore, in order to keep the connection of via node, being connected between via node and base station needs to keep the via node uplink synchronous, and makes via node have the resource that sends dispatch request all the time after setting up.The embodiment of the invention provides a kind of via node to connect the maintenance scheme, and at keeping the via node uplink synchronous, if the time is adjusted timer expiry, via node wait time of reception is ordered in advance.Order in advance if receive the described time in the given time, via node is ordered in advance according to the described time and is adjusted up transmitting time, and reboot time is adjusted timer, and feeding back ACK is given the base station.At making the via node that has relay function and be in connection status have the resource that sends dispatch request all the time, via node receives the dedicated signaling from serving BS, and wherein, dedicated signaling carries the reserved resource that sends dispatch request; Via node obtains this reserved resource.
Under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Method embodiment
According to the embodiment of the invention, at first provide a kind of via node method of attachment.
Being connected between via node and serving BS in order to keep the connection of via node, avoids via node to enter random access procedure after setting up, and is described below in conjunction with Fig. 2.
Fig. 2 is the flow chart that connects the maintenance method according to the via node of the embodiment of the invention.As shown in Figure 2, the via node method of attachment according to the embodiment of the invention comprises following processing (step S201-step S203):
Step S201: keep via node and serving BS uplink synchronous; And,
Step S203: reserve the resource that via node sends dispatch request.
Wherein, step S201 and step S203 do not have sequencing, and step S201 is used to solve the problem of uplink loss, and step S203 is used to solve the acomia problem of resource of serving capable dispatch request.Both mutually combine, and can keep the connection of via node, avoid via node to enter random access procedure.
Wherein, for step S201, mainly comprise following processing (step S2011-step S2013):
Step S2011: if the time is adjusted timer expiry, via node wait time of reception is ordered in advance;
Wherein, the described time adjustment of via node length of timer is informed by system information or dedicated signaling in the base station.
Preferably, the above-mentioned time orders in advance and is carried in the MAC control unit.
Step S2013: if the via node time that receives in the given time orders in advance, then via node is ordered its uplink time of adjustment in advance according to the time, and reboot time is adjusted timer, and feedback receives successful information ACK to the base station.
Preferably, the above-mentioned time carries up Timing Advance in ordering in advance, wherein, this up Timing Advance by the base station by its propagation delay time information calculations acquisition with via node.
Preferably, if the time that do not receive in the given time orders in advance, then via node can be thought Radio Link Failure (Radio Link Failure, be called for short RLF) and enter the random access procedure that is triggered by RLF.
Preferably, the time that do not receive orders in advance and can be the failure of receiving media access control packet, and perhaps, the success of receiving media access control packet but described packet do not comprise in the MAC control unit that the time of carrying orders in advance.
Wherein, for step S203, can further be expressed as: during setting up being connected between via node and the serving BS, the via node that via node has relay function and is in connection status has the resource that sends dispatch request all the time.
Step S203 mainly comprises following processing (step S2031-step S2033):
Step S2031: via node obtains the resource of the transmission dispatch request of reservation by dedicated signaling;
Preferably, above-mentioned dedicated signaling can be for one of following: increased the special-purpose cell of via node the UE dedicated signaling, comprise UE dedicated signaling, the via node dedicated signaling of the cell that has increased the special-purpose value of via node, wherein, the UE dedicated signaling includes but not limited to that RRC connects reprovision (RRC Connection Reconfiguration) message.
Wherein, above-mentioned resource includes but not limited to: the frequency domain resource and the time-domain resource of the transmission dispatch request of reservation.
Preferably, above-mentioned dedicated signaling can also carry the maximum number of times of transmission that via node sends dispatch request.
Preferably, do not send the maximum number of times of transmission of dispatch request, then give tacit consent to maximum number of times of transmission for infinitely great if above-mentioned dedicated signaling does not comprise via node.
Preferably, if above-mentioned dedicated signaling comprises via node and sends the maximum number of times of transmission of dispatch request, and maximum number of times of transmission is a limited number of time, when arriving maximum number of times of transmission but not receiving the resource of upstream data/signaling transmission yet, via node can be waited for the further signaling of base station or think Radio Link Failure.
Preferably, frequency domain resource can be via node and the shared frequency domain resource of UE, also can be the frequency domain resource of via node special use;
Preferably, time-domain resource can be via node and the shared time-domain resource of UE, also can be the time-domain resource of via node special use;
Preferably, the via node dispatch request avoiding by the method for the resource of the required transmission dispatch request of the terminal of its management of reasonable distribution self sending is conflicted with the dispatch request of the terminal transmission of self-management.
Step S2033: via node sends dispatch request in reserved resource.
Preferably, the base station is that RN reserves above-mentioned resource, if RN has SR to send, then (for example: the transmission cycle etc.) send SR, if RN does not have SR and will send, then this resource is not made other purposes, still reserves for RN according to above-mentioned resource.RN need avoid above-mentioned reserved resource when distributing the resource that sends SR for the UE that manages.
Pass through the foregoing description, a kind of flexible, convenient, simple, consistent via node method of attachment is provided, by keeping the uplink synchronous of the Un interface between via node and the serving BS, and the resource that remains for the transmission dispatch request of via node in advance, the connection that can keep via node, thus the via node of reduction connection status enters the probability of random access procedure.Thereby reduced influence to the terminal of relaying node administration.
Example one
Fig. 3 is the flow chart according to the example one of the embodiment of the invention.As shown in Figure 3, described under the not overtime situation of the TAT of via node (RN), the process of base station maintenance RN uplink synchronous mainly comprises following processing (step S301-step S307):
Step S301: via node carries out uplink on the uplink transmission resource of base station assigns, sends uplink transmission data/signaling to the base station;
Wherein, above-mentioned uplink signaling is carried the propagation delay time information of base station and via node.
Step S303: the base station receives the uplink transmission data/signaling of via node, and obtains propagation delay time between base station and the via node according to uplink transmission data/signaling, calculates the up Timing Advance of via node according to propagation delay time;
Step S305: order in advance to the via node transmitting time base station;
Wherein, the base station is carried at the above-mentioned time with up Timing Advance and orders in advance in (TA order) and send.
Step S307: the via node time that receives orders in advance, adjusts the uplink time of self according to its up Timing Advance that carries, and restarts timer TAT, returns step S301.
Example two
Fig. 4 is the flow chart according to the example two of the embodiment of the invention.As shown in Figure 4, under the overtime situation of the TAT that this example two has been described RN, the process of base station maintenance RN uplink synchronous mainly comprises following processing (step S401-step S409):
Step S401: under the overtime situation of TAT, via node does not trigger random access procedure, keeps the PUCCH/SRS resource;
Wherein, TAT is overtime can be because the RN that has disposed DRX inactive state not time of reception order in advance, also can be because the RN time of reception is ordered failure in advance.
Step S403: via node wait time of reception is ordered in advance, if the MAC control unit that successfully receives the MAC packet and order in advance comprising the time, then execution in step S405; If receive the failure of MAC packet or, receive the success of MAC packet but above-mentioned MAC packet does not comprise the MAC control unit that the time of carrying orders in advance, then execution in step S409;
Preferably, the MAC control unit that the above-mentioned time orders in advance can send separately, does not promptly comprise other MAC control unit or MAC SDU in the MAC PDU that comprises the MAC control unit that the time orders in advance, also can send with other MAC control unit and MAC SDU.
The Timing Advance that step S405:RN provides in ordering in advance according to the time is adjusted the uplink time of self, and restarts TAT;
Step S407:RN feeding back ACK responds to the base station;
Step S409:RN do not feed back NACK or ACK go forward side by side the Xingqi its handle.
Wherein, if successfully do not receive the MAC control unit that the time of carrying orders in advance within the predetermined time, then RN can think and enters the random access procedure that is triggered by RLF by the Radio Link Failure (Radio Link Failure, be called for short RLF) of backhaul link.
Wherein, send failure if the time orders in advance, the base station can be thought and the Radio Link Failure of backhaul link enters the random access procedure that is triggered by RLF.Wherein, time orders in advance and sends failure promptly is that the base station one or many has sent the MAC packet, wherein in a period of time after TAT is overtime, the MAC control unit that this packet time that carries orders in advance, but the ACK that does not receive from via node feeds back.
In embodiment one, embodiment two, the base station is transmitted the TAT configuration information by dedicated signaling in advance and is given RN.Wherein, this TAT configuration information comprises the duration of TAT; Preferably, the TAT duration is provided with as the case may be, can be set to infinity, also can be set to limited; TAT is ordered in advance by the time and starts/restart.
Preferably, above-mentioned dedicated signaling can be the dedicated signaling of specifying UE, also can be the dedicated signaling of specifying RN.
Preferably, above-mentioned dedicated signaling can be existing signaling (connecting reallocation message as RRC), also can be the dedicated signaling of the TAT configuration information of the transmission RN that increases newly.
Example three
Fig. 5 is the schematic diagram according to the example three of the embodiment of the invention.The base station sends the configuration information of SR to via node by dedicated signaling (RRC connects reallocation message).The configuration information that sends SR comprises frequency domain resource, the transmission cycle that sends SR, side-play amount and the maximum transmission times that sends subframe.As shown in Figure 5, the transmission cycle of SR is 5ms, and sending sub-frame offset is 4, and frequency domain resource adopts the PUCCH resource, maximum number of times of transmission is infinitely great, the diagram dash box represents to send the time-frequency position of SR, and the base station is that RN reserves these resources, if RN has SR to send, then send SR in the position shown in the dash box, if RN does not have SR and will send, then these resources are not made other purposes, still reserve for RN.RN avoids above-mentioned reserved resource when distributing the resource that sends SR for the UE that manages.
Example four
Fig. 6 is the schematic diagram according to the example four of the embodiment of the invention.The base station is by sending the configuration information of SR to via node at the RN dedicated signaling.The configuration information that sends SR comprises frequency domain resource, the transmission cycle that sends SR, side-play amount and the maximum transmission times that sends subframe.As shown in Figure 6, the transmission cycle of SR is 5ms, sending sub-frame offset is 4, frequency domain resource adopts the resource of RN special use, and maximum transmission times is 4, and the diagram dash box represents to send the time-frequency position of SR, the base station is that RN reserves this resource, send SR in the position shown in the dash box if RN has SR will send then, will not send then this resource and do not make other purposes, still be the RN reservation if RN has SR.RN avoids above-mentioned reserved resource when distributing the resource that sends SR for the UE that manages.Do not receive the resource of uplink yet when RN sends 4 SR, then think Radio Link Failure.
Example one, example two enters the problem of random access procedure at the via node that causes owing to uplink loss, example three, the problem that example four enters random access procedure at the via node that causes owing to the acomia resource of serving capable dispatch request, by combination the foregoing description, for example, combination embodiment 1,2 and 4, perhaps 1,2 and 5, perhaps 1,4, perhaps 2,5 or the like, be not limited to combinations thereof, can realize that the connection of RN keeps, thereby effectively avoid RN because on the connection status/downlink data arrives the random access procedure that triggers, business between the RN of maintenance connection status and the UE of management improves the data transfer rate of system continuously.
Device embodiment
According to the embodiment of the invention, also provide a kind of via node jockey.
Fig. 7 is the structured flowchart that connects holding device according to the via node of the embodiment of the invention.Fig. 8 is that via node connects the structured flowchart of holding device according to the preferred embodiment of the invention.As shown in Figure 7, the via node connection holding device according to the embodiment of the invention comprises: maintenance unit 1, reservation unit 2 are described below in conjunction with Fig. 8.
Maintenance unit 1 is used to keep via node and serving BS uplink synchronous;
Preferably, as shown in Figure 8, above-mentioned maintenance unit 1 comprises judge module 10, keeps module 12, and processing module 14, and wherein, judge module 10 is used to judge that the via node time that whether receives in the given time orders in advance; Keep module 12, be connected to judge module 10, be used for adjusting under the situation of timer expiry in the time, the wait time of reception is ordered in advance; Processing module 14 is connected to processing module 12, is used under the situation that the time that receives in the given time orders in advance, orders the uplink time of adjusting in advance according to the time, and reboot time is adjusted timer, and feedback receives successful information ACK and gives the base station.
Reserve unit 2, be used to reserve the resource that via node sends dispatch request.
Preferably, as shown in Figure 8, above-mentioned reservation unit 2 comprises: acquisition module 20, sending module 22, and wherein, acquisition module 20 is used for obtaining by dedicated signaling the resource of the transmission dispatch request of reservation; Sending module 22 is used for sending dispatch request in resource.
Pass through the foregoing description, provide a kind of via node to connect holding device, by the uplink synchronous between maintenance module maintenance via node and the serving BS, and by reserving the resource that module remains for the transmission dispatch request of via node in advance, thereby the connection that can keep via node, the via node that reduces connection status enters the probability of random access procedure, and then can reduce the influence to the terminal of relaying node administration.
In sum, pass through the above embodiment of the present invention, the via node connectivity scenario that provides, can avoid since uplink loss or do not have the resource that sends dispatch request cause connection status on/downlink data arrives, trigger random access procedure, and then the via node that can reduce connection status enters the probability of random access procedure, reduces the influence to the terminal of relaying node administration, improves the user data rate of system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a via node connects the maintenance method, it is characterized in that, being connected between via node and serving BS comprises after setting up:
Keep described via node and described serving BS uplink synchronous; And,
Reserve the resource that described via node sends dispatch request.
2. method according to claim 1 is characterized in that, described via node of described maintenance and serving BS uplink synchronous comprise:
If the time is adjusted timer expiry, described via node wait time of reception is ordered in advance;
If described via node receives the described time in the given time and orders in advance, then described via node is ordered its uplink time of adjustment in advance according to the described time, restart described time adjustment timer, and feedback receives successful information ACK to described base station.
3. method according to claim 2 is characterized in that, adjacent twice transmission time interval that the described time orders in advance adjusted length of timer less than the time.
4. method according to claim 1, it is characterized in that, the resource that the described via node of described reservation sends dispatch request be set up being connected between via node and serving BS during, make the described via node that has relay function and be in connection status that the resource of transmission dispatch request be arranged all the time.
5. method according to claim 1 is characterized in that, the resource of the transmission dispatch request of the described via node of described reservation comprises:
Via node obtains the resource of the transmission dispatch request of reservation by dedicated signaling; Via node sends dispatch request in described resource.
6. method according to claim 5 is characterized in that:
Described dedicated signaling is one of following: increased the special-purpose cell of via node user terminal UE dedicated signaling, comprise UE dedicated signaling, the via node dedicated signaling of the cell that has increased the special-purpose value of via node, wherein, described UE dedicated signaling comprises: RRC connects reallocation message;
Described resource comprises: the frequency domain resource and the time-domain resource of the transmission dispatch request of reservation.
7. method according to claim 6 is characterized in that,
Described frequency domain resource be following one of at least:
The shared frequency domain resource of described via node and described subscriber equipment, the frequency domain resource of described via node special use;
Described time-domain resource be following one of at least:
The shared time-domain resource of described via node and described subscriber equipment, the time-domain resource of described via node special use.
8. a via node connects holding device, it is characterized in that, comprising:
Maintenance unit is used to keep described via node and described serving BS uplink synchronous;
Reserve the unit, be used to reserve the resource that described via node sends dispatch request.
9. device according to claim 8 is characterized in that, described maintenance unit comprises:
Judge module is used to judge whether described via node receives the described time in the given time and order in advance;
Keep module, be used for adjusting under the situation of timer expiry in the time, the wait time of reception is ordered in advance;
Processing module is used for receiving in the given time under the situation that the described time orders in advance, orders in advance according to the described time and adjusts the uplink time, restart the described time to adjust timer, and feedback receives successful information ACK and gives described base station.
10. device according to claim 8 is characterized in that, described reservation unit comprises:
Acquisition module is used for obtaining by dedicated signaling the resource of the transmission dispatch request of reservation;
Sending module is used for sending dispatch request in described resource.
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| CN200910139478.1A CN101932041B (en) | 2009-06-19 | 2009-06-19 | Method and device for maintaining relay node connection |
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| CN200910139478.1A CN101932041B (en) | 2009-06-19 | 2009-06-19 | Method and device for maintaining relay node connection |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012097649A1 (en) * | 2011-01-18 | 2012-07-26 | 中兴通讯股份有限公司 | Method and relay node for backhaul link to send aperiodic sounding reference symbol |
| CN102821454A (en) * | 2011-06-10 | 2012-12-12 | 中兴通讯股份有限公司 | Processing method and device capable of keeping uplink synchronization of terminals in DRX mode |
| CN102821454B (en) * | 2011-06-10 | 2017-11-10 | 中兴通讯股份有限公司 | Terminal keeps the processing method and processing device of uplink synchronous under DRX mode |
| CN104322134A (en) * | 2012-08-22 | 2015-01-28 | 华为技术有限公司 | Access method, equipment, and base station |
| US10420113B2 (en) | 2012-09-28 | 2019-09-17 | Huawei Technologies Co., Ltd. | Resource reconfiguration method, base station, and user equipment |
| WO2014047878A1 (en) * | 2012-09-28 | 2014-04-03 | 华为技术有限公司 | Method, base station and ue for resources reallocation |
| CN108513729B (en) * | 2017-07-31 | 2021-06-08 | 深圳市大疆创新科技有限公司 | Out-of-step processing method, intermediate communication device and communication system |
| WO2019023907A1 (en) * | 2017-07-31 | 2019-02-07 | 深圳市大疆创新科技有限公司 | Out-of-synchronization processing method, intermediate communication apparatus, and communication system |
| CN108513729A (en) * | 2017-07-31 | 2018-09-07 | 深圳市大疆创新科技有限公司 | Asynchronization process method, intermediate communication device and communication system |
| US11240772B2 (en) | 2017-07-31 | 2022-02-01 | SZ DJI Technology Co., Ltd. | Out-of-synchronization processing method, intermediate communication apparatus, and communication system |
| WO2019213959A1 (en) * | 2018-05-11 | 2019-11-14 | Oppo广东移动通信有限公司 | Method for transmitting signal, relay device and network device |
| CN112088556A (en) * | 2018-05-11 | 2020-12-15 | Oppo广东移动通信有限公司 | Signal transmission method, relay equipment and network equipment |
| CN110662229A (en) * | 2018-06-29 | 2020-01-07 | 华硕电脑股份有限公司 | Method and apparatus for multi-hop integrated access and backhaul system |
| CN112105079A (en) * | 2020-08-19 | 2020-12-18 | 吴穹 | Signal synchronization method of wireless two-way relay communication system based on OFDM |
| CN114666916A (en) * | 2022-05-25 | 2022-06-24 | 广东海洋大学 | Method, relay terminal, device and system for requesting uplink resource |
| CN114666916B (en) * | 2022-05-25 | 2022-07-29 | 广东海洋大学 | Method, relay terminal, device and system for requesting uplink resource |
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