CN110062434A - A kind of relay communication method - Google Patents
A kind of relay communication method Download PDFInfo
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- CN110062434A CN110062434A CN201811115380.8A CN201811115380A CN110062434A CN 110062434 A CN110062434 A CN 110062434A CN 201811115380 A CN201811115380 A CN 201811115380A CN 110062434 A CN110062434 A CN 110062434A
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- subframe
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application provides a kind of relay communication methods, this method comprises: setting downlink access subframe for the subframe in every frame, multi-upstream access subframe, downlink returns subframe, uplink returns subframe, and downlink shares subframe or uplink shares subframe, on relay node, sharing subframe for downlink can receive the upstream data of access link, also can receive the downlink data of return link；The downlink data of access link can be sent by sharing subframe for uplink, can also send the upstream data of return link.It can be improved resource utilization by this method.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of relay communication method.
Background technique
Wireless backhaul repeated link is supported to can be realized more flexible and intensive cell deployment.Due to future mobile communications
The available bandwidth of system is bigger, while can also dispose extensive MIMO or multiple-beam system, to the access that deployment is unified
Chance is provided with return link, is easy so that dense network deployment becomes simpler.
Referring to Fig. 1, Fig. 1 is access and return link schematic diagram in existing realization.In Fig. 1 relay node can in the time,
Frequency or spatially multiplexing access and return link.Access and return link may be in identical frequency range or in different frequencies
Duan Shang, and access and demand of the return link on same frequency are more important, requirement that overall compact interoperability is to configure duplex
Limitation avoids interfering.
Access and the design of return link will consider the limitation of duplex, and the repeated link in 4G LTE system is will to return
The shortcomings that biography link and access link are time-multiplexed completely, and return link can only be sent in MBSFN sub-frame, this mode is money
Source utilization rate is lower.
Summary of the invention
In view of this, the application provides a kind of relay communication method, resource utilization can be improved.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of relay communication method, any subframe are configured as downlink access subframe, multi-upstream access subframe, downlink passback
Frame, uplink return subframe, and downlink shares subframe or uplink shares subframe；This method comprises:
Base station sends the downlink data of access link in downlink access subframe；Access chain is received in multi-upstream access subframe
The upstream data on road；The downlink data of return link is sent in downlink passback subframe；Passback is received in uplink passback subframe
The upstream data of link；The downlink data that return link is sent in subframe is shared in downlink；It shares in uplink and is received back in subframe
Pass the upstream data of link；
Relay node sends the downlink data of access link in downlink access subframe, connects in multi-upstream access subframe
The upstream data of incoming link；The downlink data of return link is received in downlink passback subframe；It is sent in uplink passback subframe
The upstream data of return link；The upstream data for receiving access link in subframe is shared in downlink, receives the downlink of return link
Data；The downlink data for sending access link in subframe is shared in uplink, sends the upstream data of return link；
Terminal receives the downlink data of access link in downlink access subframe；Access chain is sent in multi-upstream access subframe
The upstream data on road；The upstream data that access link is sent in subframe is shared in downlink；It is shared in uplink and receives access in subframe
The downlink data of link.
As can be seen from the above technical solution, downlink access subframe is set by the subframe in every frame in the application, uplink connects
Entering subframe, downlink returns subframe, and uplink returns subframe, and downlink shares subframe or uplink shares subframe, on relay node, for
Downlink, which shares subframe, can receive the upstream data of access link, also can receive the downlink data of return link；For uplink
Shared subframe can send the downlink data of access link, can also send the upstream data of return link.With this solution can
Enough improve resource utilization.
Detailed description of the invention
Fig. 1 is frame structure schematic diagram in the embodiment of the present application；
Fig. 2 is relayed communications flow diagram in the embodiment of the present application；
Fig. 3 is dynamically to adjust subframe type schematic diagram in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of relay communication method is provided in the embodiment of the present application, sets downlink access subframe for the subframe in every frame,
Multi-upstream access subframe, downlink return subframe, and uplink returns subframe, and downlink shares subframe or uplink shares subframe, in relay node
On, sharing subframe for downlink can receive the upstream data of access link, also can receive the downlink data of return link；Needle
The downlink data of access link can be sent by sharing subframe to uplink, can also send the upstream data of return link.By this
Scheme can be improved resource utilization.
In the embodiment of the present application by the subframe in each frame can be following six seed type subframe, specifically: downlink connects
Enter subframe, multi-upstream access subframe, downlink returns subframe, and uplink returns subframe, and downlink shares subframe or uplink shares subframe.
When implementing in the embodiment of the present application, being not includes this six kinds of subframe types in each frame；But it is each
Subframe in frame is arranged to one of this six seed type, and being directed in each frame has several subframe types and without limit
System.
The type that subframe is arranged can be the server than base station higher, be also possible to base station, in the embodiment of the present application
This is not limited.Base station, relay node and terminal can be notified after the type of each subframe after setting, is also possible to each
Base station, intermediate node and terminal go to know.
Be arranged a frame in each subframe type, each type subframe include it is several can be according to uplink and downlink portfolio
Configuration, it is which type of subframe which subframe can also be arranged according to the transmission situation of uplink and downlink data.
It is frame structure schematic diagram in the embodiment of the present application referring to Fig. 1, Fig. 1.It is with 6 subframes, 6 subframe types in Fig. 1
Example, first subframe are that downlink accesses subframe, and second subframe is multi-upstream access subframe, and third subframe is downlink passback
Frame, the 4th subframe are that uplink returns subframe, and the 5th subframe is that uplink shares subframe (Shared UL), and the 6th subframe is
Downlink shares subframe (Shared DL).In Fig. 1 by taking a relay node and terminal as an example, unlimited relay node in practical application
With the number of terminal.
The mode of two kinds of traffic assignments and scheduling of resource is provided in the embodiment of the present application for above-mentioned frame structure, specifically such as
Under:
The first, is semi-statically configured.
According to service conditions, using semi-static mode using the first predetermined period as the son of each subframe in one frame of period assignment
Frame type.
Due to needing to receive or send the data in passback and access link both direction on relay node, therefore, it is necessary to
Carry out the frequency domain resource distribution in time slot.
In the embodiment of the present application frequency domain resource division can be carried out by the way of static or semi-static.
It is divided when specific division resource according to how many pairs of frequency domain resources of return data and access data volume, to be used for
Distinguish different resource.
If the ratio of return data and access data volume is 3:4, then frequency resource block can be divided into 7 parts, selected in 7 parts
3 parts are used for return data, and remaining 4 parts for accessing data.
The distribution of resource can be the server than base station higher, be also possible to base station, to this in the embodiment of the present application
It is not limited.Base station, relay node and terminal can be notified after carrying out resource allocation, be also possible to each base station, middle node
Point and terminal go to know.
Resource distribution is carried out for relay node:
For shared descending time slot, the frequency domain resource in time slot is divided into the downlink data for being used to receive return link
With the upstream data two parts for receiving access link；For distinguishing different resource；
For shared ascending time slot, the frequency domain resource in time slot is divided into the upstream data for being used to send return link
With send access link downlink data two parts, for distinguishing different resource.
Described above is the transmission of data, and for the transmission of control signaling, base station and relay node are taken and send unification
Descending control signaling, specific as follows:
Base station sends descending control signaling to the relay node for accessing this base station, for dispatching the relaying section for accessing this base station
The resource of point；
Relay node sends descending control signaling to the relay node or terminal for accessing this relay node, for dispatching access
The relay node of this relay node or the resource of terminal.
That is, relay node once receives uplink scheduling information, the just shared time slot after defined time slot
Ascending time slot on send upstream data, once receiving down dispatch information, relay node is to access node in shared time slot
Descending time slot on send downlink data.
Second, common signaling dynamic configuration.
Subframe type is set with dynamic according to service conditions, and notice subframe type is enabled by group common control channel.It can be with
Second predetermined period is the period, if 10ms superframe is the period, carries out the configuration and notice of subframe type.
The frequency domain resource of shared time slot is allocated with the mode of public dynamic signaling.One way in which is by full bandwidth
It is divided into two parts, indicates which is partially used to return by signaling, which part is for accessing.By the configuration of time and frequency domain,
Can be as follows to be directed to relay node progress resource allocation the case where time of every 10ms periodic transformation and frequency domain multiplexing, and pass through
The mode of public dynamic signaling notifies resource allocation:
For shared descending time slot, the frequency domain resource in time slot is divided into the downlink data for being used to receive return link
With the upstream data two parts for receiving access link；
For shared ascending time slot, the frequency domain resource in time slot is divided into the upstream data for being used to send return link
With the downlink data two parts for sending access link.
Base station carries out the common signaling dynamic configuration of frame structure according to the access situation of all nodes, and then base station is in
Unified descending control signaling is sent after node, base station is used to dispatch the resource of the relay node and terminal that access it, and relaying is used
The resource of its terminal is accessed in scheduling.For example, relay node once receives uplink scheduling information, just when defined
Upstream data is sent on the ascending time slot of shared time slot after gap, once receiving down dispatch information, relay node is connect
Ingress sends downlink data on the descending time slot of shared time slot.
Control information is implemented as follows:
Base station sends descending control signaling to the relay node for accessing this base station, for dispatching the relaying section for accessing this base station
The resource of point；
Relay node sends descending control signaling to the relay node or terminal for accessing this relay node, for dispatching access
The relay node of this relay node or the resource of terminal.
With reference to the accompanying drawing, the process that relayed communications is realized in the embodiment of the present application is described in detail.
Referring to fig. 2, Fig. 2 is relayed communications flow diagram in the embodiment of the present application.Specific steps are as follows:
Step 201, base station sends the downlink data of access link in downlink access subframe；It is connect in multi-upstream access subframe
Receive the upstream data of access link；The downlink data of return link is sent in downlink passback subframe；In uplink passback subframe
Receive the upstream data of return link；The downlink data that return link is sent in subframe is shared in downlink；Subframe is shared in uplink
The upper upstream data for receiving return link.
As shown in figure 1, base station sends the downlink data of access link in first subframe (downlink access subframe)；Second
The upstream data of access link is received on a subframe (multi-upstream access subframe)；It is sent in third subframe (downlink passback subframe)
The downlink data of return link；The upstream data of return link is received in the 4th subframe (uplink passback subframe)；The 6th
The downlink data of return link is sent on a subframe (downlink shares subframe)；It is received on the 5th subframe (uplink shares subframe)
The upstream data of return link
Step 202, relay node sends the downlink data of access link in downlink access subframe, in multi-upstream access subframe
The upper upstream data for receiving access link；The downlink data of return link is received in downlink passback subframe；Son is returned in uplink
The upstream data of return link is sent on frame；The upstream data for receiving access link in subframe is shared in downlink, receives passback chain
The downlink data on road；The downlink data for sending access link in subframe is shared in uplink, sends the upstream data of return link.
As shown in figure 1, the downlink data that relay node sends access link in first subframe (downlink accesses in subframe),
The upstream data of access link is received on second subframe (multi-upstream access subframe)；In third subframe (downlink passback subframe)
Receive the downlink data of return link；The upstream data of return link is sent in the 4th subframe (uplink passback subframe)；?
The upstream data that access link is received on 6th subframe (downlink shares subframe), receives the downlink data of return link；?
The downlink data that access link is sent on seven subframes (uplink shares subframe), sends the upstream data of return link.
Step 203, terminal receives the downlink data of access link in downlink access subframe；It is sent out in uplink passback subframe
Send the upstream data of return link；The upstream data that access link is sent in subframe is shared in downlink；It is shared in subframe in uplink
Receive the downlink data of access link.
As shown in figure 1, terminal receives the downlink data of access link in first subframe (downlink access subframe)；Second
The upstream data of access link is sent on a subframe (multi-upstream access subframe)；It is sent on the 6th subframe (downlink shares subframe)
The upstream data of access link；The downlink data of access link is received on the 5th subframe (uplink shares subframe).
For more flexible scheduling subframe in the embodiment of the present application, downlink can be shared subframe and passback downlink subframe into
The instruction of one stepping Mobile state, can increase dynamic instruction information (DI), indicate that the downlink subframe can be used for accessing subframe, specific real
It is now as follows:
It is shared in corresponding downlink when needing to adjust subframe type and sends downlink in subframe or passback downlink subframe in base station
It indicates information (DI)；It is used to indicate to share subframe or return downlink subframe the downlink and is set as access downlink subframe (DL TX),
For sending the downlink data of downlink access link.
Relay node is shared in the downlink receives instruction current subframe as access in subframe or passback downlink subframe
When the downlink of downlink subframe indicates information (RX), which is shared into subframe or passback downlink subframe as accessing downlink subframe,
For sending the downlink data of access link.
Referring to Fig. 3, Fig. 3 is dynamically to adjust subframe type schematic diagram in the embodiment of the present application.In the downlink of Fig. 1 in Fig. 3
For sending downlink instruction information in shared subframe, it is used to indicate to the relay node pointer for accessing downlink subframe, relays
After node receives the control information, which is used for access link, dispatches resource to terminal.
In conclusion the application accesses subframe, multi-upstream access subframe, downlink by setting downlink for the subframe in every frame
Subframe is returned, uplink returns subframe, and downlink shares subframe or uplink shares subframe, on relay node, for the shared son of downlink
Frame can receive the upstream data of access link, also can receive the downlink data of return link；Sharing subframe for uplink can
To send the downlink data of access link, the upstream data of return link can also be sent.It can be improved resource with this solution
Utilization rate.
Totally 6 kinds of subframe types are devised in the embodiment of the present application, so that some sub-frame frames are completely used for access uplink and downlink, are had
A little sub-frame frames are completely used for passback uplink and downlink, some sub-frame frames are that access and passback are shared, are equally divided into ascending-descending subframes, this
Method is more flexible, and different frame structures and corresponding frequency domain resource can be semi-statically configured by high-level signaling；
Also provided in the embodiment of the present application it is a kind of by design common signaling, such as group common control signaling so that
In a super frame period, dynamic mapping subframe structure type and corresponding frequency domain resource.
Subframe also is shared to downlink in the embodiment of the present application or downlink passback subframe increases downlink instruction information, indicates the son
Frame can be used for accessing subframe, after such relay node receives instruction information, so that it may connect in the subframe to terminal scheduling
The information of incoming link, so that dispatching method is more flexible
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of relay communication method, which is characterized in that any subframe be configured as downlink access subframe, multi-upstream access subframe,
Downlink returns subframe, and uplink returns subframe, and downlink shares subframe or uplink shares subframe；This method comprises:
Base station sends the downlink data of access link in downlink access subframe；Access link is received in multi-upstream access subframe
Upstream data；The downlink data of return link is sent in downlink passback subframe；Return link is received in uplink passback subframe
Upstream data；The downlink data that return link is sent in subframe is shared in downlink；It is shared in uplink and receives passback chain in subframe
The upstream data on road；
Relay node sends the downlink data of access link in downlink access subframe, and access chain is received in multi-upstream access subframe
The upstream data on road；The downlink data of return link is received in downlink passback subframe；Passback is sent in uplink passback subframe
The upstream data of link；The upstream data for receiving access link in subframe is shared in downlink, receives the downlink data of return link；
The downlink data for sending access link in subframe is shared in uplink, sends the upstream data of return link；
Terminal receives the downlink data of access link in downlink access subframe；Access link is sent in multi-upstream access subframe
Upstream data；The upstream data that access link is sent in subframe is shared in downlink；It is shared in uplink and receives access link in subframe
Downlink data.
2. the method according to claim 1, wherein
According to service conditions, using semi-static mode using the first predetermined period as the subframe class of each subframe in one frame of period assignment
Type.
3. according to the method described in claim 2, it is characterized in that, the method further includes:
Resource distribution is carried out for relay node:
For shared descending time slot, the frequency domain resource in time slot is divided into the downlink data for being used to receive return link and is connect
Receive upstream data two parts of access link；
For shared ascending time slot, the frequency domain resource in time slot is divided into the upstream data and hair for being used to send return link
Send downlink data two parts of access link.
4. according to the method described in claim 3, it is characterized in that,
It is divided according to how many pairs of frequency domain resources of return data and access data volume.
5. according to the method described in claim 3, it is characterized in that,
Frequency domain resource division is carried out by the way of static or semi-static.
6. the method according to claim 1, wherein the method further includes:
Base station sends descending control signaling to the relay node for accessing this base station, for dispatch the relay node of this base station of access
Resource；
Relay node sends descending control signaling to the relay node or terminal for accessing this relay node, accesses in this for dispatching
After the relay node of node or the resource of terminal.
7. the method according to claim 1, wherein configuring subframe type according to service conditions, and public by group
Control signaling notifies subframe type altogether.
8. the method according to the description of claim 7 is characterized in that it is as follows to carry out resource allocation for relay node, and passing through
The mode of public dynamic signaling notifies resource allocation:
For shared descending time slot, the frequency domain resource in time slot is divided into the downlink data for being used to receive return link and is connect
Receive upstream data two parts of access link；
For shared ascending time slot, the frequency domain resource in time slot is divided into the upstream data and hair for being used to send return link
Send downlink data two parts of access link.
9. the method according to the description of claim 7 is characterized in that the method further includes:
Base station sends descending control signaling to the relay node for accessing this base station, for dispatch the relay node of this base station of access
Resource；
Relay node sends descending control signaling to the relay node or terminal for accessing this relay node, accesses in this for dispatching
After the relay node of node or the resource of terminal.
10. -9 described in any item methods according to claim 1, which is characterized in that the method further includes:
It is shared in corresponding downlink when needing to adjust subframe type and sends downlink instruction in subframe or passback downlink subframe in base station
Information；
Relay node is shared in the downlink receives instruction current subframe as access downlink in subframe or passback downlink subframe
When the downlink of subframe indicates information, which is shared into subframe or passback downlink subframe as access downlink subframe, for sending
The downlink data of access link.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811115380.8A CN110062434B (en) | 2018-09-25 | 2018-09-25 | Relay communication method |
| PCT/CN2019/078697 WO2020062800A1 (en) | 2018-09-25 | 2019-03-19 | Relay communication method and system, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811115380.8A CN110062434B (en) | 2018-09-25 | 2018-09-25 | Relay communication method |
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| CN110062434A true CN110062434A (en) | 2019-07-26 |
| CN110062434B CN110062434B (en) | 2021-05-14 |
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| CN201811115380.8A Active CN110062434B (en) | 2018-09-25 | 2018-09-25 | Relay communication method |
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| WO (1) | WO2020062800A1 (en) |
Cited By (1)
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| WO2021129753A1 (en) * | 2019-12-27 | 2021-07-01 | 京信网络系统股份有限公司 | Srs transmission method and apparatus, device, system and storage medium |
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| US20090170542A1 (en) * | 2007-12-26 | 2009-07-02 | Motorola, Inc. | System and method for minimizing inter-communications system mobile station-to-mobile station interference |
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| WO2021129753A1 (en) * | 2019-12-27 | 2021-07-01 | 京信网络系统股份有限公司 | Srs transmission method and apparatus, device, system and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020062800A1 (en) | 2020-04-02 |
| CN110062434B (en) | 2021-05-14 |
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