CN104869652A - Resource allocation method of D2D mode 2 communication - Google Patents

Resource allocation method of D2D mode 2 communication Download PDF

Info

Publication number
CN104869652A
CN104869652A CN201510241956.5A CN201510241956A CN104869652A CN 104869652 A CN104869652 A CN 104869652A CN 201510241956 A CN201510241956 A CN 201510241956A CN 104869652 A CN104869652 A CN 104869652A
Authority
CN
China
Prior art keywords
user
resource
communication
resource allocation
users
Prior art date
Application number
CN201510241956.5A
Other languages
Chinese (zh)
Other versions
CN104869652B (en
Inventor
陈亮明
李小龙
黄小军
姜杉
Original Assignee
武汉虹信通信技术有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉虹信通信技术有限责任公司 filed Critical 武汉虹信通信技术有限责任公司
Priority to CN201510241956.5A priority Critical patent/CN104869652B/en
Publication of CN104869652A publication Critical patent/CN104869652A/en
Application granted granted Critical
Publication of CN104869652B publication Critical patent/CN104869652B/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/08Wireless resource allocation where an allocation plan is defined based on quality criteria
    • H04W72/085Wireless resource allocation where an allocation plan is defined based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Abstract

The invention provides a resource allocation method of D2D mode 2 communication. The method is a quasi-state resource allocation method, and that is to say, time division multiplexing grouping is carried out on users according to business priorities, a resource length is also determined, then according to frequency division multiplexing, numbering is carried out on users in one group, start positions of resources are allocated for the users, and finally the users finish data sending of corresponding resources. By adopting the method, resource conflicts are reduced, and the resource utilization rate is improved.

Description

The resource allocation methods that a kind of D2D pattern 2 communicates

Technical field

The technical field that the present invention relates to is wireless communication system, more specifically, the present invention relates to D2D communication, namely at the end-to-end communication that the mandate frequency range of related operators is carried out, more specifically, is the resource allocation methods of a kind of D2D pattern 2 communication.

Background technology

Need not by the transfer of base station when communication refers to and communicates between terminal end to end, directly communicate between terminal, such communication does not need the participation of base station, decrease the burden of base station, in present daily life, the communication technology is a lot of end to end, such as, common are bluetooth, WIFI and NFC technique etc.But the communication of these technology is all be operated on unauthorized common frequency band, when a lot of user uses, very large interference and dangerous row can be there is.

D2D communication work is in the mandate frequency range of related operators, and interference can control and coefficient of safety is high, is the study hotspot of the present communications field.The application scenarios of D2D communication mainly contains network coverage scene, edges cover scene and without several scenes such as network coverage scenes.The data transmission resources method of salary distribution has Mode 1 communication to communicate with Mode 2.Mode 1 communication is mainly used in network coverage scene, sends the scheduling resource needed for data by eNB configure user; Mode 2 communication is mainly used in edges cover and without network coverage scene, for edges cover scene, and the semi-static configuration schedules resource pool of eNB; For without network coverage scene, pre-configured scheduling resource pond, user chooses the transmission that resource carries out data in principal and subordinate's resource pool.

Below by several relevant background technology that underdraws.

1.1 resource pool

ENB is the resource that user sends data configuration, or pre-configured resource, but not concrete running time-frequency resource, but by resource allocation pond for all users that will carry out communicating, particular by configuration bitmap, cycle, the parameters such as repetition factor are expressed and be can be used for the resource that user sends data, D2D communication subframe and cell communication subframe is mainly configured in bitmap, wherein 1 represents that being used for D2D communicates, 0 represents the subframe being used for cell communication, repetition factor represents bitmap number of repetition, namely cycle is the cycle that bitmap occurs, can value be 40ms, 80ms, 160ms, 320ms.Communicate for D2D mode 2, namely the semi-static resource allocation pond of eNB or pre-allocated recourses pond provide user to send the resource of data, and user chooses the transmission that corresponding running time-frequency resource carries out data in principal and subordinate's resource pool.

1.2 random code

The terminal attribute unique 15 corresponding bit-identify code IMEI codes of mobile phone represent.IMEI code is made up of 15 bit digital, and it consists of: front 6 for number (TAC) be " unit type approval code ", distributed by European model authentication center; Then 2 figure places (FAC) are factory's assembling codes, are encoded by producer, ordinary representation manufacturer and assembling ground thereof; 6 figure places (SNR) are afterwards " strings number ", i.e. serial number, is also distributed by producer, and identify certain equipment in each TAC and FAC, the SNR of each mobile phone can not be the same, therefore can mark user terminal with this code; Last 1 figure place (SP) is normally " 0 ", and be check code, its number is arranged by producer, can ignore.

1.3 type of service

Bearer types: default bearing, dedicated bearer, GBR carrying and Non-GBR carrying.

Default bearing: a kind of data of satisfied acquiescence QoS and user's carrying of signaling.Default bearing simply can be interpreted as a kind of carrying providing IP connection of doing one's best, and provides always online IP to connect to subscriber equipment.The qos parameter of default bearing can come from the subscription data obtained from home subscriber server (HSS), also can be mutual or configure based on this locality by policy charging rule function (PCRF).

Dedicated bearer: the SAE carrying that some specific transactions is used.Generally the QoS of special SAE carrying is higher than the requirement of acquiescence QoS.Dedicated bearer associates up (UL) traffic flow template (TFT) at UE, DL (descending) TFT is associated at PDN GW, the filter of business data flow is comprised in TFT, and these filters can only mate the grouping of some criterion, the qos parameter of dedicated bearer is always distributed by packet-based core networks.

GBR carries: carry relevant private network resource to guarantee bit rate (GBR), set up in carrying or be permanently assigned to certain carrying by functions such as the call access control of such as eNB in modification process, this is carried on requirement in bit rate and can ensures constant.

Non-GBR carries: carry contrary with GBR, and Internet resources can not be permanently assigned to certain carrying, namely can not ensure that the bit rate of this carrying is constant, be exactly Non-GBR carrying, and default bearing should be Non-GBR carrying.What carrying was safeguarded is the aggregate of a server data stream (SDF), the set of multiple SDF of corresponding same bearer rank QoS, each SDF is described by 5 tuples of IP (source IP address, object IP address, source port number, destination slogan, the above agreement ID of IP layer), comes identification terminal and application or service with this.So SDF can be used for being connected to Web, streaming media server or mailbox server.

Each business has different QoS weights and priority thereof, and concrete corresponding relation is in table 1.

Summary of the invention

The technical problem to be solved in the present invention is, D2D Mode 2 is communicated, the semi-static resource allocation pond of eNB or pre-allocated recourses pond, user sends information, need independently from resource pool, to choose the transmission that corresponding running time-frequency resource carries out information, owing to there is no interactive information between user, therefore user independently chooses resource and there will be resource conflict problem.

Solving this technical problem proposed technical scheme is:

In line with minimizing resource contention, improve the principle of resource utilization and data transmission credibility, propose a kind of user herein according to itself type of service and identification code, by the mode of time division multiplexing and frequency division multiplexing, determine that it sends the method for the resource of not conflicting mutually of data, an i.e. quasistatic resource allocation methods, its specific implementation step is as follows:

Step one: user determines by semi-static configuration or pre-configured resource pool configuration information the resource that can be used in D2D communication, these information comprise the subframe bitmap of instruction for D2D communication, cycle, repeat factor parameter;

Step 2: when user has D2D service needed to send, then inform other users in a broadcast manner by the QoS grade of business and service priority corresponding to QCI, receive the service priority information that other users send simultaneously;

Step 3: user according to the service priority information that other users of receiving send determine number of users that each service priority is corresponding x1, x2 ..., xn ..., x9};

Step 4: be first user's computational resource block number that service priority is the highest, according to the number of users of each service priority, calculates user's resource requirement number of identical services priority, comprises the resource size of required number of sub frames and each user.RB number R is determined, by continuous print according to system bandwidth the individual subframe for D2D communication supplies the transmission of equal priority user, if m=1, then the RB number of each user in subframe is if m>1, then the user's number in the 1st subframe is the RB number that each user distributes user's number of other m-1 subframe is the RB number that each user distributes wherein n value is 1,2 ... 9.According to the order of customer service priority, according to the Resourse Distribute of step 4 completing user;

Step 5: xn user of equal priority is numbered.Utilizing 6 SNR codes in user exclusive identification code IMEI, is 0,1 by the identification code number of xn user ..., xn-1, the i.e. numbering of completing user;

Step 6: the result calculated according to above-mentioned steps, determines the resource original position of each user.If during m=1, then the resource that the user of numbering 0 distributes is that resource size is K1 from No. 0 RB, and the resource that the user of numbering 1 distributes is that resource size is K1 from K1 RB; The like, be numbered the user resource allocation of xn-1 for from (xn-1) * K1 RB, resource size is K1, namely completes the Resourse Distribute of xn user; If during m>1, first for D2D communication subframe, the user resource allocation of numbering 0 is for from No. 0 RB, resource size is K2, and the resource that the user of numbering 1 distributes is that resource size is K2 from K2 RB, the like, be numbered the user resource allocation of p1-1 for from (p1-1) * K2 RB, resource size is K2, namely completes the Resourse Distribute of p1 user; Again (xn-p1) individual user is distributed, in other each subframes, be numbered resource that user corresponding to y distribute for from the individual (ymodp) * K3 RB for D2D communication subframe starts, and resource size is K3, and wherein, y value is p1, p1+1 ..., xn-1, computational methods like this complete the Resourse Distribute to (xn-p1) individual user;

Step 7: user is in the transmission of the enterprising row data of corresponding running time-frequency resource.

Compared with prior art, the present invention has the following advantages and beneficial effect:

The resource distribution mode communicated due to D2D pattern 2 is that user independently chooses resource and carries out data transmission from resource pool, therefore there will be multiple user in prior art and choose certain same resource block simultaneously, cause multiple customer service all cannot transmit or multiple business is transmitted in same resource block, data cannot correctly receive, other Resource Block are in idle state simultaneously, the method that the present invention proposes can according to available resource block number in the traffic carrying capacity of each user and resource pool, specifically determine the resource block mapping position of business, there will not be the situation of resource contention of the prior art and the wasting of resources, thus improve resource utilization and transfer of data validity.

Accompanying drawing explanation

Fig. 1 is the Resourse Distribute realization flow figure of D2D mode 2 communication that the present invention proposes.

Table 1 is QoS class information and service priority mapping table (prior art).

Table 2 is user related information correspondence tables in the embodiment of the present invention.

Keyword:

Embodiment

Below in conjunction with embodiment shown in the drawings, the method is described in detail.

Suppose the semi-static configuration of eNB or pre-configured resource pool information as follows: bitmap is 1010101101, repetition factor is 4, namely represent that be all identical bitmap in 4 radio frames of one-period, wherein 1 represents that being used for D2D communicates, 0 represents for cell communication, cycle is 40ms, and system bandwidth is 5M;

Step one: user knows resource pool configuration information, namely bitmap is 1010101101;

Step 2: user has D2D service needed to send, is 1 inform other users by itself QoS grade and service priority corresponding to QCI=1, receives the service priority information that other users send simultaneously, and user and QCI and priority corresponding relation are as following table 2.

Table 1

Table 2

Customs Assigned Number SNR QCI Priority User itself 859626 1 2 1 309675 1 2 2 112985 6 6 3 455128 4 5 4 276854 5 1 5 597815 8 8 6 853129 2 4 7 574198 4 5 8 514726 1 2 9 357216 5 1 10 589421 3 3

Step 3: user defines total number of users L=11 of D2D business demand according to the service priority information that other users received send, and the number of users that each service priority is corresponding, namely priority is the number of users x1=2 of 1, x2=3, x3=1, x4=1, x5=2, x6=1, x7=0, x8=1, x9=0;

Step 4: preferentially carry out the Resourse Distribute that priority is the user of 1, here R>x1, then a subframe just can meet the user resources demand that priority is 1, namely priority be 1 user first of indicating at bitmap transmit in the subframe of D2D communication, RB number R=25 is determined according to system bandwidth, here with computational resource allocation situation: x1=2 in first subframe, R>x1, then calculate the RB number K=12 of each user, the RB number of first user is the RB number of 12, second user is 13; The resource RB number of all priority respective user can be calculated successively;

Step 5: 6 SNR codes in user exclusive identification code IMEI code, as shown in table 2.The SNR code of two users is 276854 and 357216, by generating not repeating random number, and the scope of random number is the code of 0 to xn-1, using these two user SNR codes as initial code, export 0 and 1, namely realizing the numbering to these two users, is 1 if the SNR code Customs Assigned Number that is 276854 is 0,357216 Customs Assigned Numbers;

Step 6: SNR code is the resource of user's distribution of 276854 is first 12 RB started for No. 0 RB of D2D communication subframe, SNR code is the resource of user's distribution of 357216 is first R-K* (N-1)=25-12=13 RB started for No. 12 RB of D2D communication subframe, completes the user resources distribution that priority is 1;

Step 7: user is in the transmission of the enterprising row data of the running time-frequency resource of correspondence, and identical process completes other priority users Resourse Distribute.

Claims (6)

1. the resource allocation methods that communicates of D2D pattern 2, is characterized in that: user, according to itself type of service and identification code, by the mode of time division multiplexing and frequency division multiplexing, determines that it sends data resource requirement block and does not conflict mutually.
2. the resource allocation methods of a kind of D2D pattern 2 communication according to claim 1, is characterized in that: concrete steps are as follows:
Step one: user determines by semi-static configuration or pre-configured resource pool configuration information the resource that can be used in D2D communication;
Step 2: when user has D2D service needed to send, then inform other users in a broadcast manner by the QoS grade of business and service priority corresponding to QCI, receive the service priority information that other users send simultaneously;
Step 3: user according to the service priority information that other users of receiving send determine number of users that each service priority is corresponding x1, x2 ..., xn ..., x9};
Step 4: be first user's computational resource block number that service priority is the highest, according to the number of users of each service priority, calculate user's resource requirement number of identical services priority, comprise the resource size of required number of sub frames and each user, the Resourse Distribute of completing user;
Step 5: xn user of equal priority is numbered;
Step 6: the result calculated according to above-mentioned steps, determines the resource original position of each user;
Step 7: user is in the transmission of the enterprising row data of corresponding running time-frequency resource.
3. the resource allocation methods of a kind of D2D pattern 2 communication according to claim 1, it is characterized in that: described step one, information comprises the subframe bitmap of instruction for D2D communication, cycle, repeat factor parameter.
4. the resource allocation methods of a kind of D2D pattern 2 communication according to claim 1, it is characterized in that: described step 4, concrete distribution method is:
RB number R is determined, by continuous print according to system bandwidth the individual subframe for D2D communication supplies the transmission of equal priority user,
If m=1, then the RB number of each user in subframe is
If m>1, then the user's number in the 1st subframe is the RB number that each user distributes user's number of other m-1 subframe is the RB number that each user distributes wherein n value is 1,2 ... 9.
5. the resource allocation methods of a kind of D2D pattern 2 communication according to claim 1, it is characterized in that: described step 5, concrete numbering process is:
Utilizing 6 SNR codes in user exclusive identification code IMEI, is 0,1 by the identification code number of xn user ..., xn-1, the i.e. numbering of completing user.
6. the resource allocation methods of a kind of D2D pattern 2 communication according to claim 1, is characterized in that: described step 6, determines that the method for the resource original position of each user is:
If during m=1, then the resource that the user of numbering 0 distributes is that resource size is K1 from No. 0 RB, and the resource that the user of numbering 1 distributes is that resource size is K1 from K1 RB; The like, be numbered the user resource allocation of xn-1 for from (xn-1) * K1 RB, resource size is K1, namely completes the Resourse Distribute of xn user;
If during m>1, first for D2D communication subframe, the user resource allocation of numbering 0 is for from No. 0 RB, resource size is K2, and the resource that the user of numbering 1 distributes is that resource size is K2 from K2 RB, the like, be numbered the user resource allocation of p1-1 for from (p1-1) * K2 RB, resource size is K2, namely completes the Resourse Distribute of p1 user; Again (xn-p1) individual user is distributed, in other each subframes, be numbered resource that user corresponding to y distribute for from the individual (ymodp) * K3 RB for D2D communication subframe starts, and resource size is K3, and wherein, y value is p1, p1+1 ..., xn-1, computational methods like this complete the Resourse Distribute to (xn-p1) individual user.
CN201510241956.5A 2015-05-13 2015-05-13 The resource allocation methods that a kind of D2D patterns 2 communicate CN104869652B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510241956.5A CN104869652B (en) 2015-05-13 2015-05-13 The resource allocation methods that a kind of D2D patterns 2 communicate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510241956.5A CN104869652B (en) 2015-05-13 2015-05-13 The resource allocation methods that a kind of D2D patterns 2 communicate

Publications (2)

Publication Number Publication Date
CN104869652A true CN104869652A (en) 2015-08-26
CN104869652B CN104869652B (en) 2018-06-01

Family

ID=53915065

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510241956.5A CN104869652B (en) 2015-05-13 2015-05-13 The resource allocation methods that a kind of D2D patterns 2 communicate

Country Status (1)

Country Link
CN (1) CN104869652B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105554808A (en) * 2016-02-22 2016-05-04 北京邮电大学 D2D (Device-to-Device) resource distribution method and device in cellular network
WO2017036272A1 (en) * 2015-09-01 2017-03-09 中兴通讯股份有限公司 Resource selection method and device
CN106559877A (en) * 2015-09-24 2017-04-05 中兴通讯股份有限公司 The sending method and device of car networking business, resource allocation method and device
CN107690127A (en) * 2016-08-04 2018-02-13 北京信威通信技术股份有限公司 A kind of determination method and device of the communication resource
WO2018059188A1 (en) * 2016-09-30 2018-04-05 华为技术有限公司 Uplink transmission method and device
CN109314993A (en) * 2016-06-29 2019-02-05 华为技术有限公司 The message transmission carried out by random access scheme
WO2020114249A1 (en) * 2018-12-07 2020-06-11 华为技术有限公司 Resource allocation method, terminal device, and network device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012048464A1 (en) * 2010-10-14 2012-04-19 Nokia Corporation Device to device and connection mode switching
CN103179669A (en) * 2013-04-22 2013-06-26 西安电子科技大学 Resource distribution method for door 2 door (D2D) communication in long term evolution system
CN104219675A (en) * 2013-05-30 2014-12-17 中兴通讯股份有限公司 Management method and system of discovery information resource between communication nodes
CN104602179A (en) * 2013-10-31 2015-05-06 中兴通讯股份有限公司 D2D (Device to Device) data transmission method and user equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012048464A1 (en) * 2010-10-14 2012-04-19 Nokia Corporation Device to device and connection mode switching
CN103179669A (en) * 2013-04-22 2013-06-26 西安电子科技大学 Resource distribution method for door 2 door (D2D) communication in long term evolution system
CN104219675A (en) * 2013-05-30 2014-12-17 中兴通讯股份有限公司 Management method and system of discovery information resource between communication nodes
CN104602179A (en) * 2013-10-31 2015-05-06 中兴通讯股份有限公司 D2D (Device to Device) data transmission method and user equipment

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017036272A1 (en) * 2015-09-01 2017-03-09 中兴通讯股份有限公司 Resource selection method and device
CN106559877A (en) * 2015-09-24 2017-04-05 中兴通讯股份有限公司 The sending method and device of car networking business, resource allocation method and device
CN106559877B (en) * 2015-09-24 2019-02-26 中兴通讯股份有限公司 The sending method and device of car networking business, resource allocation method and device
CN105554808A (en) * 2016-02-22 2016-05-04 北京邮电大学 D2D (Device-to-Device) resource distribution method and device in cellular network
CN105554808B (en) * 2016-02-22 2019-03-22 北京邮电大学 A kind of D2D in Cellular Networks is to resource allocation methods and device
US10764930B2 (en) 2016-06-29 2020-09-01 Huawei Technologies Co., Ltd. Message transmission through a random access scheme
CN109314993A (en) * 2016-06-29 2019-02-05 华为技术有限公司 The message transmission carried out by random access scheme
CN107690127A (en) * 2016-08-04 2018-02-13 北京信威通信技术股份有限公司 A kind of determination method and device of the communication resource
CN107889264A (en) * 2016-09-30 2018-04-06 华为技术有限公司 A kind of ascending transmission method and equipment
WO2018059188A1 (en) * 2016-09-30 2018-04-05 华为技术有限公司 Uplink transmission method and device
WO2020114249A1 (en) * 2018-12-07 2020-06-11 华为技术有限公司 Resource allocation method, terminal device, and network device

Also Published As

Publication number Publication date
CN104869652B (en) 2018-06-01

Similar Documents

Publication Publication Date Title
Bazzi et al. On the performance of IEEE 802.11 p and LTE-V2V for the cooperative awareness of connected vehicles
CN106233696B (en) Send the method and its equipment of the explicit signal of -2 state variable of layer for D2D communication system
CN105453675B (en) Method and apparatus for performing device-to-device communication
CN104937859B (en) Device-to-device communication with cluster-coordinator
US9826525B2 (en) Resource management method and apparatuses for device to device communications
CN103493567B (en) Mobile communications system, infrastructure equipment and method using short identifier for resource scheduling
Saad et al. Coalition formation games for distributed cooperation among roadside units in vehicular networks
CN104869526B (en) A kind of communication of device-to-device and its resource allocation methods, equipment
CN103442442B (en) The method of device discovery in the D2D communication system that a kind of base station is assisted
CN104363598B (en) A kind of DRB mapping methods and device
CN105325047B (en) The terminal and its operating method communicated for holding equipment to equipment
CN102083138B (en) A kind of D2D user to can the multiple phone user's resources of concurrent multiplexing method
CN102687454B (en) For the method and apparatus using demodulated reference signal multiplexing in wireless communications
RU2341913C2 (en) Method of configuring and updating connection identifier in broadband wireless access communication systems
CN103650371B (en) The scheduling of resource of machine-to-machine equipment
CN104185281B (en) Resource distribution and resource using method and device in a kind of D2D communications
CN102231722B (en) Resource allocations
CN103190196B (en) The selection of communication pattern
CN105745945B (en) Control the data transmission of the machine type communication in mobile communication system
CN107736061A (en) Communicated for sidelinks and select the method and device of source of synchronising signal
CN104350796B (en) Wireless communication system, radio base station apparatus, the distribution method of terminal installation and Radio Resource
CN102017541B (en) In GSM, receive the method for ack/nack signal
US8374162B2 (en) Transmission device and transmission method
CN103858362B (en) The devices and methods therefor of multi-case data is sent/received in a wireless communication system
CN101388694B (en) Apparatus and method for determining resources for peer to peer communication in a communication system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant