CN105979527A - Device-to-Device resource allocation method based on group matching - Google Patents
Device-to-Device resource allocation method based on group matching Download PDFInfo
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- CN105979527A CN105979527A CN201610284005.0A CN201610284005A CN105979527A CN 105979527 A CN105979527 A CN 105979527A CN 201610284005 A CN201610284005 A CN 201610284005A CN 105979527 A CN105979527 A CN 105979527A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000013468 resource allocation Methods 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 230000001413 cellular effect Effects 0.000 abstract description 9
- 230000011664 signaling Effects 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a Device-to-Device resource allocation method based on group matching. A group is formed between cellular users and D2D users or between D2D users according to a certain rule, the group performs dispatching under coordination of a base station, interference can be better coordinated, and thus, the spectrum utilization rate is improved, and the cell throughput is added. Signaling overheads in aspects such as dispatching request by the D2D users and dispatched resource allocation by the base station are reduced, more resources can be used for data transmission while the signaling overheads are controlled to be reduced, and enhancement of the throughput is thus ensured.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to terminal direct connection resource distribution side based on group matches
Method.
Background technology
The covering of raising system and capacity are the important goals of IMT-Advanced, terminal direct connection
(Device-to-Device, be called for short D2D) technology as the core technology of the follow-up evolution of IMT-Advanced,
In the way of more cost-effective, (small configuration cost and low running cost) improves covering and capacity.Traditionally
Mobile communication system all use the mode of base station and its terminal room point-to-point serviced to transmit voice-and-data,
Thus bring many problems, as exist coverage hole, cell edge is in poor service, load of base station is heavy,
Network design lacks motility etc..This single network structure cannot adapt to the requirement of following wireless application,
Designing new communication mode and making up the deficiency of traditional cellular network has been a trend.D2D utilizes base station
The service provided etc. Cellular Networks infrastructure and control, it is allowed to user terminal is in cellular networks in the way of straight-through
Directly communicate or utilize adjacent terminals as relaying thus realize flexibly reasonably autonomous and collaboration communication, be into
One step improves network design motility, expands the coverage area, and promotes network capacity and efficiency of transmission, strengthens system
Robustness, and reduce the effective means of base station and power consumption of terminal.The of LTE-Advanced (be called for short LTE-A)
In 12 versions (Release 12), terminal direct connection introduces and named Sidelink as a new characteristic
Transmission.
In the D2D of LTE-A realizes, set and use uplink channel resources to be transmitted, define one for this
The physical channel of series, wherein has with resource distribution and data transmission related physical channel:
1) physics sidelink shares channel (physical sidelink shared channel is called for short PSSCH): should
Channel user data transmission between D2D terminal.
2) physics sidelink control channel (physical sidelink control channel is called for short PSCCH):
This channel, for the resource distribution indicating PSSCH and the transmission means used, passes including D2D data
Defeated occupied Resource Block, the Modulation and Coding Scheme of use, time advance instruction etc..
Two kinds of working methods defined in LTE-A are the distribution of resource when D2D communicates:
1) essentially identical with the scheduling mode of cellular terminal, the scheduling instruction of D2D terminal also derives from base station,
The most concrete step is:
I.D2D terminal send dispatch request to base station, and identify this be D2D transmission, to be different from this terminal
As during cellular terminal to base station data transmit.
Ii. base station is asked accordingly, the resource required for estimation D2D terminal, and determines the modulating-coding of employing
Mode, if many transmission parameter such as frequency-hopping transmissions.
Iii. at Physical Downlink Control Channel (physical downlink control channel is called for short PDCCH)
On schedule information is broadcasted, and use the sidelink wireless network of this D2D terminal to mark temporarily
Know (SL-RNTI) instruction.
Iv.D2D terminal receives the schedule information on PDCCH, on demand at PSSCH enterprising row data
Transmit.
2) the primary resource selection mode of D2D terminal: be D2D terminal distribution a series of cycle in advance by base station
Property the resource pool that occurs for the transmission of PSSCH and PSCCH, D2D terminal autonomy ground subsequently
Select suitable resource and suitable transformat to perform the transmission of data from resource pool.
For the resource allocation methods of aforesaid two kinds of D2D terminals, the problem that prior art is primarily present is as follows.
Method 1 is that D2D terminal is also served as cellular terminal and treats by base station, on the basis of obtaining global information
Perform centralized scheduling of resource, when not considering expense, the performance of scheduling or perhaps the profit of resource
Being all optimum by rate, it is the biggest that the shortcoming existed is mainly signaling consumption.
1) D2D terminal need to report resource request information according to the data volume of oneself caching to base station, and it needs
Row controls channel (physical uplink control channel is called for short PUCCH) point physically
Join and periodically dispatch instruction (scheduling indication is called for short SI) resource or need
In Physical Random Access Channel (physical random access channel, be called for short PRACH) competing
Strive resource, thus increase the load of up channel.
2) base station can accomplish preferably to dispatch, and need to understand the channel condition information (channel between sending and receiving end
State information, is called for short CSI), such as suitably Modulation and Coding Scheme, use diversity still
The working method of the multiple antennas such as multiplexing, this CSI being also required to depend on D2D terminal reports, equally
Increase the load of up channel.
3) above-mentioned 1) and 2) D2D reporting information by terminal during, be all terminal perform wireless
The operation that signal sends, due to power amplifier to be driven and to overcome path loss then to need bigger
Transmitting power (compare receive process for), this means that bigger battery consumption,
Run in the opposite direction with the target of following mobile network's design；
4) during base station uses PDCCH to inform D2D terminal, shared resource adds descending
The load of channel.
Method 2 is the D2D Resource Allocation Formula under base station more low level management, and base station allocates resource in advance
Pond, is determined the scheduling of resource and relevant transmission parameter by D2D terminal autonomy, and this can reduce control
The expense of channel, but the Autonomous Scheduling of D2D terminal is the most effectively coordinated, particularly at LTE so
Single frequency network situation under, have in community cellular transmission and D2D transmission, neighbor cell also have cellular transmission and
D2D transmits, and the interference worked under same frequency range is overlapped mutually, and the dynamics thus interfering with control is the best, directly
Connecing the result caused is exactly that error probability increases, thus reduces handling capacity, and then reduces the service impression of user.
Summary of the invention
Goal of the invention: it is an object of the invention to provide one can increase handling capacity, improves the base of the availability of frequency spectrum
Terminal direct connection resource allocation methods in group matches.
Technical scheme: terminal direct connection resource allocation methods based on group matches of the present invention, its feature exists
In: comprise the following steps:
S1: plan to build the D2D of vertical communication to the road between base station repeats its QoS demand, and D2D user
Footpath loss information；
S2: base station is based on QoS demand, the phone user of structure recoverable resources and/or the candidate of D2D user
Set；
S3: base station informs that D2D user receives signal in sub-frame of uplink and estimates that the size receiving power is with really
It is scheduled on disturbed condition potential under multiplexed resource；
S4:D2D user monitors the signal received and determines potential disturbed condition；
Potential disturbed condition is reported to base station by S5:D2D user；
The decision of structure group is made according to disturbed condition in S6: base station: if two couples of D2D users constitute group,
Then create D2D group RNTI or continue to use D2D group RNTI existed；
S7: if D2D user and phone user constitute group, then the C-RNTI of phone user is informed D2D
User；If two couples of D2D users constitute group, then D2D group RNTI that is newly created or that continue to use is informed
D2D user；
S8:D2D user preserves the RNTI notified, the information in PDCCH is decoded by follow-up follow-up, determines
Determine the send opportunity of oneself.
Further, the demand in terms of the QoS demand in described step S1 includes data rate and time delay.
Further, in described step S4, if the Resource Block of the not specified supervision in base station, then D2D user is whole
Observe in individual bandwidth range, and record each Resource Block as the reception power information on ultimate unit.
Further, described D2D user uses least interference principle or the power consumption principle of optimality to specified by base station
Resource Block be marked.
Beneficial effect: compared with prior art, the present invention has a following beneficial effect:
1) present invention will be built into according to certain rule between phone user and D2D user or D2D user
Being a group, this group is scheduling under the coordination of base station, preferably can coordinate interference, from
And improve the availability of frequency spectrum, increase cell throughout；
2) present invention decreases D2D user and ask the signaling consumption of the aspects such as scheduling, base station allocation schedule resource,
The reduction controlling signaling consumption also implies that the transmission that more resource can be had for data, thus ensure that and gulp down
The lifting of the amount of telling.
Accompanying drawing explanation
Fig. 1 is phone user's schematic diagram with D2D user's multiplexed resource of the present invention；
Fig. 2 be the present invention D2D user between the schematic diagram of multiplexed resource；
Fig. 3 be communicate between the phone user of the present invention and base station or between D2D user communication use up
The schematic diagram of channel resource；
Fig. 4 is the flow chart of the inventive method.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, technical scheme is further introduced.
In simple phone user's up channel communication, the phone user being scheduled for is as transmitting terminal, base station
As receiving terminal, the resource that each phone user is used is mutually orthogonal on frequency domain.When introducing D2D
After communication, in order to improve the handling capacity of community, on the premise of ensureing enough isolations, it may be considered that
D2D communication shares the resource of phone user's uplink, as shown in Figure 1；Can also allow between D2D communication
Carry out sharing, as shown in Figure 2 of resource.Specific in the resource distribution system of LTE-A, being total to of this resource
Enjoy and refer to the same time/frequency source block of multiplexing, as shown in Figure 3.
The terminal direct connection resource allocation methods based on group matches that the present invention provides, as shown in Figure 4, step is such as
Under:
S1: the D2D planning to build vertical communication has passed through physics sidelink discovery channel (physical sidelink
Discovery channel, is called for short PSDCH) find each other, and to its QoS demand of base station repeats, and
Channel conditions between D2D user, information on path loss；In terms of QoS demand includes data rate and time delay
Demand；
S2: base station, according to the channel conditions between QoS demand and D2D user, is added D2D user and is existed
The ability of the D2D terminal having learned that in the capability negotiation of initial access network, such as maximum transmission power and
Within the past period, whether phone user has Hypomobility, select potential can be with this D2D user
The phone user of pairing or other D2D users, thus construct phone user and/or the D2D use of recoverable resources
The candidate collection at family；
S3: base station informs that D2D user enters at sub-frame of uplink (also can further specify that on which Resource Block)
The supervision of row uplink channel resources, it is desirable to user determines diving under multiplexed resource according to the signal intensity received
At disturbed condition；
S4:D2D user monitors the signal received and determines potential disturbed condition；If the not specified prison in base station
Depending on Resource Block, then D2D user observes in whole bandwidth range, and records each Resource Block as base
Reception power information in our unit；D2D user uses least interference principle or the power consumption principle of optimality to base station
Specified Resource Block is marked；Labelling can optionally carry out binary or multicomponent coding, indicates acceptable
/ unacceptable or concrete tolerance grade；
Potential disturbed condition is reported to base station by S5:D2D user；
The decision of structure group is made according to disturbed condition in S6: base station: if two couples of D2D users constitute group,
Then create D2D group RNTI or continue to use D2D group RNTI existed；
S7: if D2D user and phone user constitute group, then the C-RNTI of phone user is informed D2D
User；If two couples of D2D users constitute group, then D2D group RNTI that is newly created or that continue to use is informed
D2D user；
S8:D2D user, after the RNTI information bound in obtaining, only need to monitor PDCCH on the uplink,
If there being C-RNTI or the D2D group RNTI labelling constituting group therewith to occur, it is known that base station allows oneself
Can with the transmitting power of the frequency spectrum resource specified by multiplexing and permission, as concrete Modulation and Coding Scheme and
The parameter configuration etc. of multiple antennas, can obtain in the coordination between transmitting terminal based on this D2D before and receiving terminal.
Claims (4)
1. terminal direct connection resource allocation methods based on group matches, it is characterised in that: comprise the following steps:
S1: plan to build the D2D of vertical communication to the road between base station repeats its QoS demand, and D2D user
Footpath loss information；
S2: base station is based on QoS demand, the phone user of structure recoverable resources and/or the candidate of D2D user
Set；
S3: base station informs that D2D user receives signal in sub-frame of uplink and estimates that the size receiving power is with really
It is scheduled on disturbed condition potential under multiplexed resource；
S4:D2D user monitors the signal received and determines potential disturbed condition；
Potential disturbed condition is reported to base station by S5:D2D user；
The decision of structure group is made according to disturbed condition in S6: base station: if two couples of D2D users constitute group,
Then create D2D group RNTI or continue to use D2D group RNTI existed；
S7: if D2D user and phone user constitute group, then the C-RNTI of phone user is informed D2D
User；If two couples of D2D users constitute group, then D2D group RNTI that is newly created or that continue to use is informed
D2D user；
S8:D2D user preserves the RNTI notified, the information in PDCCH is decoded by follow-up follow-up, determines
Determine the send opportunity of oneself.
Terminal direct connection resource allocation methods based on group matches the most according to claim 1, its feature
It is: the QoS demand in described step S1 includes the demand in terms of data rate and time delay.
Terminal direct connection resource allocation methods based on group matches the most according to claim 1, its feature
Being: in described step S4, if the Resource Block of the not specified supervision in base station, then D2D user is in whole bandwidth
In the range of observe, and record each Resource Block as the reception power information on ultimate unit.
Terminal direct connection resource allocation methods based on group matches the most according to claim 3, its feature
It is: described D2D user uses least interference principle or the power consumption principle of optimality to the resource specified by base station
Block is marked.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061818A (en) * | 2018-01-18 | 2019-07-26 | 中兴通讯股份有限公司 | The determination of signal mode, the preparation method of signal mode and device, storage medium |
| WO2019148414A1 (en) * | 2018-02-01 | 2019-08-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | User equipment and method of wireless communication of same |
| CN110447294A (en) * | 2017-03-23 | 2019-11-12 | 英特尔公司 | Vehicle to vehicle (V2V) sidelinks communicate in prioritized messages and resource selection |
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| CN103249007A (en) * | 2013-05-24 | 2013-08-14 | 北京邮电大学 | Method for establishing D2D multicast communication and allocating wireless source thereof in IMT-A system |
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Patent Citations (2)
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| CN103068049A (en) * | 2012-12-11 | 2013-04-24 | 北京邮电大学 | Method of avoiding interference to device-to-device (D2D) communications caused by cellular communications in honeycomb and D2D hybrid network |
| CN103249007A (en) * | 2013-05-24 | 2013-08-14 | 北京邮电大学 | Method for establishing D2D multicast communication and allocating wireless source thereof in IMT-A system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447294A (en) * | 2017-03-23 | 2019-11-12 | 英特尔公司 | Vehicle to vehicle (V2V) sidelinks communicate in prioritized messages and resource selection |
| US11553503B2 (en) | 2017-03-23 | 2023-01-10 | Apple Inc. | Prioritized messaging and resource selection in vehicle-to-vehicle (V2V) sidelink communication |
| CN110447294B (en) * | 2017-03-23 | 2023-06-09 | 苹果公司 | Priority message and resource selection in vehicle-to-vehicle (V2V) side link communications |
| US11877314B2 (en) | 2017-03-23 | 2024-01-16 | Apple Inc. | Prioritized messaging and resource selection in vehicle-to-vehicle (V2V) sidelink communication |
| CN110061818A (en) * | 2018-01-18 | 2019-07-26 | 中兴通讯股份有限公司 | The determination of signal mode, the preparation method of signal mode and device, storage medium |
| WO2019148414A1 (en) * | 2018-02-01 | 2019-08-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | User equipment and method of wireless communication of same |
| CN111492697A (en) * | 2018-02-01 | 2020-08-04 | Oppo广东移动通信有限公司 | Wireless communication user equipment and wireless communication method thereof |
| CN111492697B (en) * | 2018-02-01 | 2024-02-06 | Oppo广东移动通信有限公司 | Wireless communication user equipment and wireless communication method thereof |
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