CN103687034A - Group scheduling method and device - Google Patents
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Abstract
The invention discloses a group scheduling method and a group scheduling device, relating to the communication technology. When a terminal establishes connection for access network equipment, a characteristic group identifier of the terminal established communication connection is determined, the terminal is divided to a scheduling group corresponding to the characteristic group identifier according to the characteristic group identifier, then convergence is completed in the determined scheduling group, the scheduling group is subjected to group scheduling after the terminal in the scheduling groups finishes establishment of all communication connection, the characteristic group identifier is an identification distributed to the terminal according to the characteristic of the terminal when a contract is signed, and the group scheduling applied to M2M (machine to machine) communication is implemented.
Description
Technical field
The present invention relates to the communication technology, relate in particular to a kind of group scheduling method and device.
Background technology
Machine to machine (Machine to Machine, M2M) communication is a kind of trend of following intelligent development.3-G (Generation Three mobile communication system) with and long evolving system in need to support MTC(Machine Type Communications, machine type communication) function.Smart Metering(intelligent metering wherein) as a kind of typical MTC application scenarios, obtained paying close attention to widely.Smart Metering business has that distribution density is high, network is low to the demand for control of equipment, time cycle equipment reporting service is long, and the features such as single and position is fixing are concentrated, applied to the time.
For LTE(Long Term Evolution, Long Term Evolution) and UMTS(Universal Mobile Telecommunications System, universal mobile telecommunications system) system, traditional scheduling mode is that network sends a physical layer control channel (PDCCH(Physical Downlink Control Channel of LTE, Physical Downlink Control Channel), the HS-SCCH(Shared Control Channel for HS-DSCH(High Speed Downlink Shared Channel of UMTS), the shared control channel of high speed descending sharing channel)/E-AGCH(E-DCH(Enhanced Dedicated Channel) Absolute Grant Channel, strengthen the absolute grant channel of dedicated channel)) terminal of scheduling, but for MTC application Smart Metering scene, great amount of terminals at one time section is carried out transmitting small data packets, for example all ammeter unifications of certain time period report electric weight, now network carries out one by one dynamic dispatching meeting to numerous terminals and produces a large amount of physical layer control signals.
To M2M, the communication based on group is specifically introduced below:
M2M communication refers to the communication between machine and machine, without people's participation.An important feature of the type communication is the user that quantity is larger, MTC(Machine Type Communication namely, machine type communication) number of terminal will be far longer than H2H(Human to Human, person to person) terminal, normally tens of H2H terminal times.For a kind of sector application Smart Metering, as a kind of typical MTC application scenarios, such as water meter, ammeter, gas meter, hydrologic monitoring etc., they or belong to same user (such as Utilities Electric Co., Running-water Company etc.), or for example in a region, distribute, than comparatively dense (hydrologic monitoring).When its keeper need to obtain public information to all MTC equipment in certain user's MTC equipment or certain region, if respectively each MTC equipment is carried out paging or sends the identical information content to each MTC equipment, will cause the wasting of resources to a certain degree.If form group by belonging to same user or the MTC equipment within the scope of the same area, based on group, manage and control, will reduce the wasting of resources, improve resource utilization.
In the communication of M2M based on group, group under terminal is known by CAMEL-Subscription-Information, terminal in same group is that position is relatively fixing or only movable in specific region, and need at specific time period, to initiate a Terminal Type of same line of business simultaneously, when signing, this Terminal Type is divided into same group, and distributed identical group information, each terminal is at USIM(UMTS(Universal Mobile Telecommunications System) Subscriber Identity Module, universal mobile telecommunications system subscriber identification module) preservation group information in card, at network side, core network entity also can preservation group information.The information of group comprises the group under this terminal, the characteristic group sign of affiliated group etc.
For LTE system, at present existing a kind of group scheduling scheme based on the time-division, basic thought is: grouping is directly determined according to the type of service of UE in base station, in a PDCCH dispatch, one group of UE is carried out to resource distribution, all groups of resources that interior UE distributes by this PDCCH of time-division sharing mode.Article one, the PDCCH that grouping is dispatched for UE has certain entry-into-force time, and PDCCH is effective within this entry-into-force time.Every group has a group C-RNTI(Group Cell Radio Network Temporary Identifier, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI based on group), the PDCCH of group scheduling is used group C-RNTI scrambling.
Specifically, for all UE in group, by UE number, whole time-domain resource is carried out to decile, for each UE in organizing distributes a bit of time-domain resource, the time-domain resource that in each group, UE obtains with respect to the skew correspondence between whole time-domain resource starting point in the group of this UE and is identified.UE receives needs according to group member's number, UE after the PDCCH of group C-RNTI scrambling the numbering in group (i.e. sign in group), PDCCH to send the time-domain resource that subframe, group scheduling PDCCH entry-into-force time just can be determined self use.
For example, establish base station several UE are divided into one group, as shown in Figure 1, group scheduling flow process comprises:
Once UE receives the PDCCH for the Group C-RNTI scrambling of self ownership group, according to the frequency domain resource of PDCCH indication, determine that the operable frequency domain physical resource of this UE (is PRB(Physical Resource Block, Physical Resource Block) position), and determine that according to sign in the group of UE its operable time domain physical resource (is TTI, the operable TTI(Transmission Time of UEi Interval, transmission time interval) value is the subframe that meets M mod N=i, wherein M is the frame period between current time and the initial subframe of PDSCH/PUSCH, M=0 shows that current time is initial subframe, N is UE number in group, i is UE numbering), then according to definite resource, carry out UL transfer of data.The initial subframe of PDSCH/PUSCH sends subframe by PDCCH and draws.
But the present inventor finds, in LTE system, grouping is directly determined according to the type of service of UE in base station, just can carry out group scheduling to dividing the UE of a group into, in group member's number and each member's group, sign is determined, and in the communication scenes of M2M based on group, because M2M adopts signing grouping, so can not directly apply which.
The group scheduling scheme of also not communicating by letter based on M2M at present.
Summary of the invention
The embodiment of the present invention provides a kind of group scheduling method and device, to realize the group scheduling can be applicable in M2M communication.
A group scheduling method, comprising:
Access network equipment is determined the characteristic group sign of the terminal establishing a communications link, and described characteristic group is designated the sign of distributing to described terminal when signing according to the characteristic of described terminal;
Access network equipment identifies according to described characteristic group, described terminal is divided into described characteristic group and identifies in corresponding dispatch group;
Access network equipment determines that described dispatch group completes and converges, and the terminal in described dispatch group all completes after the foundation of communication connection, and this dispatch group is carried out to group scheduling.
A group scheduling device, comprising:
Determining unit, for determining the characteristic group sign of the terminal establishing a communications link, described characteristic group is designated the sign of distributing to described terminal when signing according to the characteristic of described terminal;
Division unit, for according to described characteristic group sign, is divided into described characteristic group by described terminal and identifies in corresponding dispatch group;
Scheduling unit, converges for determining that described dispatch group completes, and the terminal in described dispatch group all completes after the foundation of communication connection, and this dispatch group is carried out to group scheduling.
The embodiment of the present invention provides a kind of group scheduling method and device, access network equipment is when having terminal to connect, determine the characteristic group sign of the terminal establishing a communications link, and according to this characteristic group sign, terminal is divided into characteristic group to be identified in corresponding dispatch group, and then complete and converge in definite dispatch group, and the terminal in dispatch group all completes after the foundation of communication connection, this dispatch group is carried out to group scheduling, and characteristic group is designated the sign of distributing to terminal when signing according to the characteristic of terminal, realized the group scheduling can be applicable in M2M communication.
Accompanying drawing explanation
Fig. 1 is that in prior art, LTE group scheduling resource is distributed schematic diagram;
The group scheduling method flow diagram that Fig. 2 provides for the embodiment of the present invention;
The more concrete group scheduling method flow diagram that Fig. 3 provides for the embodiment of the present invention;
The LTE group scheduling resource distribution schematic diagram that Fig. 4 provides for the embodiment of the present invention;
The group scheduling apparatus structure schematic diagram that Fig. 5 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of group scheduling method and device, access network equipment is when having terminal to connect, determine the characteristic group sign of the terminal establishing a communications link, and according to this characteristic group sign, terminal is divided into characteristic group to be identified in corresponding dispatch group, and then complete and converge in definite dispatch group, and the terminal in dispatch group all completes after the foundation of communication connection, this dispatch group is carried out to group scheduling, and characteristic group is designated the sign of distributing to terminal when signing according to the characteristic of terminal, realized the group scheduling can be applicable in M2M communication.
As shown in Figure 2, the group scheduling method that the embodiment of the present invention provides comprises:
Step S201, access network equipment are determined the characteristic group sign of the terminal establishing a communications link, and characteristic group is designated the sign of distributing to terminal when signing according to the characteristic of terminal;
Step S202, access network equipment, according to characteristic group sign, are divided into characteristic group by terminal and identify in corresponding dispatch group;
Step S203, access network equipment determine that dispatch group completes and converge, and the terminal in dispatch group all completes after the foundation of communication connection, and this dispatch group is carried out to group scheduling.
Further, at step S202 access network equipment, according to characteristic group sign, after terminal is divided into characteristic group and identifies in corresponding dispatch group, also comprise:
Access network equipment is determined the interior sign of the group of terminal;
Now, in step S203, access network equipment carries out group scheduling to this dispatch group, specifically comprises:
Access network equipment, according to identifying in the group of each terminal in dispatch group, carries out group scheduling to this dispatch group.
Wherein, when adopting the mode of Dynamic Packet to divide into groups, network dynamically joins same characteristic group by this terminal and identifies corresponding dispatch group, and need in this dispatch group, effectively in group, identify for one of the interim distribution of each terminal, until all terminals of this dispatch group all connect, complete converge (process of determining the member composition of a dispatch group); Now, completing the method converging can be that the terminal number accumulative total that is divided into a dispatch group reaches some, it is definite that this number can be assessed the network load of nearest a period of time according to access network equipment, and completing the method converging can be also that the duration length converging reaches certain hour.
It should be noted that, while adopting this packet mode, be signed in to the terminal of same characteristic group, may be divided in different dispatch group.
When adopting the mode of signing fixing grouping to divide into groups, movable or static in a terminal Yi Ge community of a characteristic group of restriction, in the group of each terminal, be identified at agreement while contracting, now, completing the method converging can be that the terminal number that is divided into a dispatch group totally reaches total member's number of signing this characteristic group, and dispatch group is completely corresponding with characteristic group.
Based on above-mentioned two kinds of packet modes, access network equipment is determined the interior sign of the group of terminal, specifically comprises:
Access network equipment is that one of this terminal distribution effectively identifies in group in this dispatch group; Or
Access network equipment is defined as sign in the group of this terminal agreement when signing to identify in the group of terminal in this dispatch group.
Access network equipment is determined that dispatch group completes and is converged, specifically comprises:
Access network equipment determines that the terminal number in dispatch group reaches predefined number threshold value, and number threshold value determines according to network load, or the number threshold value signing number of members that is dispatch group; And/or
Access network equipment is determined and is reached predefined time threshold the settling time of dispatch group.
In embodiments of the present invention, access network equipment carries out group scheduling to this dispatch group, specifically comprises:
Access network equipment is dispatch group Resources allocation, and in resource, realize with dispatch group in the transfer of data of terminal.
Wherein, resource allocation methods can be pure time-division resource distribution method, also can be the resource allocation methods of time-division and frequency division associating or time-division and code minute associating, conventionally for LTE system, adopt time-division and frequency division associating, for UMTS system, adopt time-division and code minute associating.The resource allocation result of time-division and frequency division associating or time-division and code minute associating can be passed through high-rise common signaling (the RRC(Radio Resource Control of LTE and UMTS, Radio Resource is controlled) signaling) notice, also can pass through physical layer control signal (PDCCH of LTE, the HS-SCCH/E-AGCH of UMTS) notice.
Now, access network equipment is dispatch group Resources allocation, specifically comprises:
Access network equipment was combined or divided with code the mode being connected by the time-division with frequency division by the time-division is dispatch group Resources allocation.
Access network equipment also comprises after being dispatch group Resources allocation:
Access network equipment is by high-rise common signaling or the resource of distributing by physical layer control signal notice dispatch group.
Concrete, in UMTS network, also relate to RNC(Radio Network Controller, radio network controller) Signalling exchange and between base station, when access network equipment is specially base station, the resource that access network equipment distributes by high-rise common signaling notice dispatch group, specifically comprises:
Base station receives the scheduling request information of carrying dispatch group sign that radio network controller (RNC) sends;
Base station by distributed resource notification to RNC, and the resource of being distributed by high-rise common signaling notice dispatch group by RNC;
Base station receives the dispatching response message of carrying dispatch group sign that RNC returns;
Or when access network equipment is specially RNC, the resource that access network equipment distributes by high-rise common signaling notice dispatch group, specifically comprises:
To base station, send the scheduling request information of carrying dispatch group sign;
Receive after the resource of the distribution of notifying base station the resource of distributing by high-rise common signaling notice dispatch group;
To base station, return to the dispatching response message of carrying dispatch group sign.
In LTE network, mode by time-division and frequency division associating is dispatch group Resources allocation, and high-rise common signaling comprises: group C-RNTI, frequency domain resource starting point, frequency domain resource granularity, group member's number, the terminal number of each subframe scheduling, sign, group scheduling physical downlink control channel PDCCH entry-into-force time in the group of terminal;
In UMTS network, mode by time-division and code minute associating is dispatch group Resources allocation, high-rise common signaling comprises: group H-RNTI or group E-RNTI, code territory resource starting point, code territory resource granularity, group member's number, the terminal number that each time slot is corresponding, sign in the group of terminal, time-domain resource HS-PDSCH(High Speed Physical Downlink Shared Channel, high-speed downstream Physical Shared Channel) or E-PUCH(Enhanced Physical Uplink Channel, enhancing uplink physical channel) starting point time slot, group scheduling HS-SCCH or E-AGCH entry-into-force time,
In LTE network, mode by time-division and frequency division associating is dispatch group Resources allocation, and physical layer control signal comprises: the terminal number of frequency domain resource starting point, frequency domain resource granularity, group member's number, each subframe scheduling, group scheduling PDCCH entry-into-force time;
In UMTS network, a mode by time-division and code minute associating is dispatch group Resources allocation, and physical layer control signal comprises: code territory resource starting point, code territory resource granularity, group member's number, terminal number, time-domain resource HS-PDSCH or E-PUCH starting point time slot, group scheduling HS-SCCH or E-AGCH entry-into-force time that each time slot is corresponding.
LTE system take below as example, and the group scheduling method that the embodiment of the present invention is provided is elaborated,
For LTE, when having data to send, in each group, terminal originating service is set up request (Service Request) process, and it is separate that the business that each terminal is initiated is set up request process, but there are some differences with conventional business process of establishing, distinguish as follows:
Each terminal is initiated RRC to eNB and is connected process of establishing, need to connect in foundation request (RRCConnectionRequest) message and carry the indication of supporting group scheduling at RRC, and carry Group Id(characteristic group sign); Above-mentioned information also can be carried in (RRCConnectionSetupComplete) message has been set up in RRC connection; Or can in above-mentioned message, only carry the indication of supporting group scheduling;
In the RRC message that eNB receives, only have support the indication of group scheduling, while there is no Group Id, eNB need to be when forwarding the NAS business request information of UE by S1 interface, from core network requests, obtain the Group Id of this terminal, MME receives after NAS business request information, to eNB, send S1 initial context message, this message is carried Group Id;
ENB receives after the terminal access with certain Group Id sign for the first time, first according to the judgement of current network load, whether the terminal of this Group Id sign is implemented to group scheduling, if judgement can be carried out group scheduling, for this Group Id, set up a dispatch group, for Dynamic Packet mode, start one to should Group Id converge counter or converge timer, the maximum of counter can be to determine after access network equipment is assessed the network load of nearest a period of time; For signing fixedly packet mode, starts one to the counter that converges that should Group Id, the maximum of counter can be the member's number of always contracting of characteristic group.At this, converging counter does not reach maximum maybe this converges timer and does not have in the overtime time, eNB joins the terminal with this Group Id in this dispatch group, and be a common group C-RNTI of this interim distribution of group terminal, for Dynamic Packet mode, also for each terminal is interim, distribute one to identifying in the group of terminal, in this group sign only in dispatch group effectively, for signing fixedly packet mode, in group, sign is known while contracting.The RRC of eNB terminal in issuing each group carries sign in group C-RNTI and group in connecting reconfiguration message.
After the terminal of this dispatch group all completes and connects and set up, eNB is used the PDCCH of group C-RNTI scrambling to start to dispatch this group terminal by one.For Dynamic Packet mode, meanwhile, eNB is restarted and is converged counter or timer, and the terminal that newly accesses this identical Group Id is divided into a new dispatch group, continues said process;
As shown in Figure 3, the group scheduling method that the embodiment of the present invention provides comprises:
Step S301, first terminal initiate to connect process of establishing, and first terminal reports the indication of supporting group scheduling to eNB;
Step S302, eNB determine whether first terminal reports Group Id, if not, and execution step S303, if so, execution step S305;
Step S303, eNB are to the Group Id of MME request first terminal;
The Group Id of the first terminal that step S304, eNB reception MME returns;
Step S305, judge whether to carry out group scheduling, and determining while carrying out group scheduling, set up dispatch group, start and converge counter or converge timer;
Step S306, to first terminal, send RRC and connect reconfiguration message, carry group C-RNTI, when adopting Dynamic Packet mode, also carry in the group of distribution and identify;
Step S307, first terminal send RRC connection to eNB and have reshuffled message;
Step S308, other terminal, when initiating to connect process of establishing, connect according to the mode of step S301 ~ step S307, it should be noted that in step S305, as long as add other terminal to this dispatch group, do not need to re-establish dispatch group;
Step S309, definite converging reach maximum or converge timer expiry its summer time;
Step S310, the PDCCH by group C-RNTI scrambling carry out the transmission of downlink data/upstream data.
For UMTS, it should be noted that, it is applicable too that the above-mentioned group communication based on group scheduling connects the process of setting up.UMTS is different with LTE, and in access network equipment, RNC is responsible for processing RRC signaling, NodeB dispatch terminal, and there is mutual between NodeB and RNC.
When RNC obtains Group Id from UE or core net, first by NBAP message, Group Id is notified to NodeB request group scheduling, whether NodeB implements group scheduling to the terminal of this Group Id sign according to the judgement of current network load, if adjudicate successfully, for this Group Id, set up dispatch group, this UE is joined in dispatch group, and to RNC response, will implement group scheduling by NBAP message.
In dispatch group, in each member's group, sign can be that RNC distributes, and can be also that NodeB distributes, if RNC distributes, needs clearly to configure to base station.If base station assigns, base station need to feed back to RNC in response message, and RNC issues terminal by RRC message again.
For LTE and UMTS system, respectively the resource allocation methods of time-division in the embodiment of the present invention and frequency division associating or time-division and code minute associating is described below.
LTE system:
All UE for a dispatch group, first distribute a time domain and the larger resource of frequency domain, then by UE number, whole time-domain resource and frequency domain resource are carried out to decile, for each UE in organizing distributes a bit of time-domain resource and frequency domain resource, in the time domain that in each group, UE obtains, frequency domain resource this UE group with respect to the skew correspondence between whole time domain, frequency domain resource starting point, identify.Each UE receives after the PDCCH of group C-RNTI scrambling, need to take how many PRB according to frequency domain resource starting point PRB_start, each UE of frequency domain resource granularity PRB_unit(), sign UE_Id, time-domain resource starting point subframe, group scheduling PDCCH entry-into-force time T just can determine time domain and the frequency domain resource of UE use in the group of user's number K, the UE of group member's number N, each subframe scheduling.Time-domain resource (PDSCH/PUSCH) starting point subframe is according to group scheduling PDCCH, to send subframe to draw, time-domain resource granularity is 1 subframe.
Wherein, user's number K, the group scheduling PDCCH entry-into-force time T of frequency domain resource starting point PRB_start, frequency domain resource granularity PRB_unit, group member's number N, each subframe scheduling can be carried by RRC signaling, also can be carried by physical control channel PDCCH.In the group of UE, sign UE_Id mentions above, is carried, or determine when signing by RRC signaling.
Note: converge timer mode if adopted, group member's number N can only be carried by physical control channel PDCCH.
Specifically, as shown in Figure 4, a dispatch group has N user, and resource frequency domain is divided into K part, in 1 TTI, dispatch K user, N is the Integer n times of K, and N=K*n, can dispatch N user by n TTI, first TTI scheduling is numbered 0 ~ K-1 user, K ~ 2K-1 user of second TTI scheduling, the like, last TTI dispatches a last K user (n-1) K ~ N-1.Suppose group scheduling PDCCH entry-into-force time T=3n, within the entry-into-force time, can dispatch 3 times continuously N user.
Each UE determines its operable time-domain and frequency-domain physical resource according to sign in the group of UE, if j frequency range of M subframe (frequency domain position is PRB_start+j*PRB_unit) distributed to i user, (M mod n) * K+j=i, wherein M is the frame period between current time and the initial subframe of PDSCH/PUSCH, span is 0 ~ entry-into-force time T-1, M=0 shows that current time is the initial subframe of PDSCH/PUSCH, i is the interior sign of the group of UE, span is 0 ~ N-1, j is frequency domain skew, and span is 0 ~ K-1.
UMTS system:
Similar with LTE, just frequency domain is become to a yard territory.Concrete, all UE for a dispatch group, first distribute the larger resource of a time domain and code territory, then by UE number, whole time-domain resource and code territory resource are carried out to decile, for each UE in organizing distributes a bit of time-domain resource and a code territory resource, the time domain that in each group, UE obtains, code territory resource with respect to the skew correspondence between whole time domain, code territory resource starting point in the group of this UE and are identified.Each UE receives and carries group H-RNTI(HS-DSCH(High Speed Downlink Shared Channel) Radio Network Temporary Identifier, high speed descending sharing channel Radio Network Temporary Identifier) or group E-RNTI(E-DCH(Enhanced Dedicated Channel) Radio Network Temporary Identifier, enhancing dedicated channel Radio Network Temporary Identifier) HS-SCCH(Shared Control Channel for HS-DSCH(High Speed Downlink Shared Channel), the shared control channel of high speed descending sharing channel) or E-AGCH(E-DCH(Enhanced Dedicated Channel) Absolute Grant Channel, strengthen the absolute grant channel of dedicated channel) after, need to be according to code territory resource starting point (Code_start), code territory resource granularity (Code_unit, each UE takies how many SF16 code channels), group member's number N, user's number K of each time slot, sign (UE_Id) in the group of UE, time-domain resource (HS-PDSCH or E-PUCH) starting point time slot, group scheduling HS-SCCH or E-AGCH entry-into-force time T just can determine time domain and the frequency domain resource that UE is used.Time-domain resource granularity is 1 time slot.
Wherein, user's number K of Code_start, Code_unit, group member's number N, each time slot, time-domain resource starting point time slot, group scheduling HS-SCCH or E-AGCH entry-into-force time T can be carried by RRC signaling, also can be carried by physical control channel HS-SCCH or E-AGCH.In the group of UE, sign is carried by RRC signaling, or determines when signing.
It should be noted that, if adopted, converge timer mode, group member's number N can only be carried by physical control channel HS-SCCH/E-AGCH.
UMTS is different with LTE, and the resource of group scheduling is distributed if by RRC signaling, and NodeB also needs the resource of group scheduling to distribute by NBAP message informing RNC, and RNC is again by RRC signaling UE; The resource of group scheduling is distributed if notify by physical layer control channel HS-SCCH/E-AGCH, and NodeB directly sends, and does not need mutual with RNC.
UMTS group scheduling resource distribution schematic diagram and Fig. 4 are similar, just frequency domain are become to a yard territory.
In embodiments of the present invention, when establishing a communications link, the terminal relating to need to notify access network equipment to support the indication of group scheduling, sometimes also need to notify access network equipment group sign, thereby request group scheduling, network is known this information and is adjudicated and carry out after group scheduling, the processing method for single terminal communication that is different from for group communication that just can adopt the embodiment of the present invention to provide in follow-up processing.This sentences LTE system is example, provides several method, but that the Notification Method of concrete group scheduling request is not limited to is following several:
Specific implementation is:
Specific implementation is:
Method 3, the preamble(preamble during by random access) judge.Particularly the method can be for supporting one of the terminal distribution of group scheduling or the preamble that some are special-purpose, and eNB can judge that this time connects whether foundation is group scheduling request by the preamble based on using in terminal random access procedure;
Method 4 increases information element and represents that this time connects the request of foundation for group scheduling request in the up RRC message such as RRCConnectionRequest or RRCConnectionSetupComplete, and eNB is to core net inquiry acquisition group sign.
It should be noted that, outside eliminating method 3, said method is applicable to UMTS too.
For LTE system, access network equipment is assigned to UE after dispatch group, need to distribute notice to UE the resource of group scheduling, now, can pass through RRC signaling, also can notify by physical layer control channel PDCCH.
For RRC signaling, the resource of notifying distributes content can comprise all or part of content as shown in table 1:
In table 1LTE system, RRC resource that signaling is notified is distributed content
For PDCCH, the resource of notice distributes content can comprise all or part of content as shown in table 2:
In table 2LTE system, resource that PDCCH notifies is distributed content
| Content | Indicating mode |
| Frequency domain resource starting point PRB_start | Integer or represent with 2 system bits |
| Frequency domain resource granularity PRB_unit | Integer or represent with 2 system bits |
| Group member's number N | Integer or represent with 2 system bits |
| User's number K of each subframe scheduling | Integer or represent with 2 system bits |
| Group scheduling PDCCH entry-into-force time T | Integer or represent with 2 system bits |
For UMTS system, access network equipment is assigned to UE after dispatch group, need to distribute notice to UE the resource of group scheduling equally.Now, can pass through RRC signaling, also can notify by physical layer control channel HS-SCCH or E-AGCH.
For RRC signaling, the resource of notice distributes content can comprise all or part of content as shown in table 3:
In table 3UMTS system, RRC resource that signaling is notified is distributed content
For HS-SCCH or E-AGCH, the resource of notice distributes content can comprise all or part of content as shown in table 4:
In table 4UMTS system, RRC resource that signaling is notified is distributed content
| Content | Indicating mode |
| Code territory resource starting point Code_start | Integer or represent with 2 system bits |
| Code territory resource granularity Code_unit | Integer or represent with 2 system bits |
| Group member's number N | Integer or represent with 2 system bits |
| User's number K of each timeslot scheduling | Integer or represent with 2 system bits |
| HS-PDSCH/E-PUCH starting point time slot | Integer or represent with 2 system bits |
| Group scheduling HS-SCCH/E-AGCH entry-into-force time T | Integer or represent with 2 system bits |
For LTE system, adopt the resource allocation methods of time-division and frequency division, example is as follows:
Suppose frequency domain resource starting point PRB_start=10, frequency domain resource granularity PRB_unit=2, group member's number N=100, the number of users K=10 of each subframe scheduling, group scheduling entry-into-force time T=30
Once having dispatched all users needs n=N/K=10 subframe, within the entry-into-force time, can dispatch T/n=3 time all users
According to formula j frequency range of (M mod n) * K+j=i(M subframe (frequency domain position is PRB_start+j*PRB_unit), distribute to i user), can calculate:
In organizing, the user that the 3rd frequency range of the 0th subframe (being initial subframe) (frequency domain position PRB is numbered 10+3*2=16, and resource size is PRB_unit=2) starting from initial subframe distributed is designated 0+3=3;
In organizing, the user that the 3rd frequency range of the 17th subframe (frequency domain position PRB is numbered 10+3*2=16, and resource size is PRB_unit=2) starting from initial subframe distributed is designated (17mod 10) * 10+3=73;
For being designated 73 user in organizing, can also draw within the entry-into-force time, initial subframe start the 7th, the 3rd frequency range of 17,27 subframes (frequency domain position PRB is numbered 16, and length is 2 PRB) obtains scheduling.
The embodiment of the present invention is also corresponding provides a kind of group scheduling device, as shown in Figure 5, comprising:
Determining unit 501, for determining the characteristic group sign of the terminal establishing a communications link, characteristic group is designated the sign of distributing to terminal when signing according to the characteristic of terminal;
Division unit 502, for according to characteristic group sign, is divided into characteristic group by terminal and identifies in corresponding dispatch group;
Wherein, division unit 502 also for:
According to characteristic group sign, after terminal is divided into characteristic group and identifies in corresponding dispatch group, determine sign in the group of terminal;
Scheduling unit carries out group scheduling to this dispatch group, specifically comprises:
Access network equipment, according to identifying in the group of each terminal in dispatch group, carries out group scheduling to this dispatch group.
Division unit 502 is determined the interior sign of the group of terminal, specifically comprises:
For one of this terminal distribution effectively identifies in group in this dispatch group; Or
Sign in the group of this terminal agreement when signing is defined as identifying in the group of terminal in this dispatch group.
The definite dispatch group of scheduling unit 503 completes and converges, and specifically comprises:
Determine that the terminal number in dispatch group reaches predefined number threshold value, number threshold value determines according to network load, or the number threshold value signing number of members that is dispatch group; And/or
Reach predefined time threshold the settling time of determining dispatch group.
503 pairs of these dispatch group of scheduling unit are carried out group scheduling, specifically comprise:
For dispatch group Resources allocation, and in resource, realize with dispatch group in the transfer of data of terminal.
By the time-division, being combined or divide with code the mode being connected by the time-division with frequency division is dispatch group Resources allocation.
After dispatch group Resources allocation, by high-rise common signaling or the resource of distributing by physical layer control signal notice dispatch group.
In universal mobile telecommunications system UMTS network, the resource that scheduling unit 503 distributes by high-rise common signaling notice dispatch group, specifically comprises:
Receive the scheduling request information of carrying dispatch group sign that radio network controller (RNC) sends;
By distributed resource notification to RNC, and the resource of being distributed by high-rise common signaling notice dispatch group by RNC;
Receive the dispatching response message of carrying dispatch group sign that RNC returns;
Or
To base station, send the scheduling request information of carrying dispatch group sign;
Receive after the resource of the distribution of notifying base station the resource of distributing by high-rise common signaling notice dispatch group;
To base station, return to the dispatching response message of carrying dispatch group sign.
The embodiment of the present invention provides a kind of group scheduling method and device, access network equipment is when having terminal to connect, determine the characteristic group sign of the terminal establishing a communications link, and according to this characteristic group sign, terminal is divided into characteristic group to be identified in corresponding dispatch group, and then complete and converge in definite dispatch group, and the terminal in dispatch group all completes after the foundation of communication connection, this dispatch group is carried out to group scheduling, and characteristic group is designated the sign of distributing to terminal when signing according to the characteristic of terminal, realized the group scheduling can be applicable in M2M communication.
In practical application, the MTC equipment of a characteristic group is probably dispersed in a plurality of communities, cause Yi Ge community not cover all MTC equipment of this characteristic group, if want, under Yi Ge community, carry out group scheduling, need to consider packet mode, the embodiment of the present invention, by the mode of Dynamic Packet or signing grouping, has solved the problem of how to confirm member number and each member's the interior sign of group how to confirm; The embodiment of the present invention further provides the resource allocation methods of time-division and frequency division associating or time-division and code minute associating, has improved resource utilization ratio.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (17)
1. a group scheduling method, is characterized in that, comprising:
Access network equipment is determined the characteristic group sign of the terminal establishing a communications link, and described characteristic group is designated the sign of distributing to described terminal when signing according to the characteristic of described terminal;
Access network equipment identifies according to described characteristic group, described terminal is divided into described characteristic group and identifies in corresponding dispatch group;
Access network equipment determines that described dispatch group completes and converges, and the terminal in described dispatch group all completes after the foundation of communication connection, and this dispatch group is carried out to group scheduling.
2. the method for claim 1, is characterized in that, described access network equipment identifies according to described characteristic group, after described terminal is divided into described characteristic group and identifies in corresponding dispatch group, also comprises:
Described access network equipment is determined the interior sign of the group of described terminal;
Described access network equipment carries out group scheduling to this dispatch group, specifically comprises:
Described access network equipment, according to identifying in the group of each terminal in described dispatch group, carries out group scheduling to this dispatch group.
3. method as claimed in claim 2, is characterized in that, described access network equipment is determined the interior sign of the group of described terminal, specifically comprises:
Described access network equipment is that one of this terminal distribution effectively identifies in group in this dispatch group; Or
Described access network equipment is defined as sign in the group of this terminal agreement when signing to identify in the group of described terminal in this dispatch group.
4. the method for claim 1, is characterized in that, described access network equipment is determined that described dispatch group completes and converged, specifically comprises:
Described access network equipment determines that the terminal number in described dispatch group reaches predefined number threshold value, and described number threshold value determines according to network load, or the described number threshold value signing number of members that is described dispatch group; And/or
Described access network equipment is determined and is reached predefined time threshold the settling time of described dispatch group.
5. the method for claim 1, is characterized in that, described access network equipment carries out group scheduling to this dispatch group, specifically comprises:
Described access network equipment is described dispatch group Resources allocation, and in described resource, realize with described dispatch group in the transfer of data of terminal.
6. method as claimed in claim 5, is characterized in that, described access network equipment is described dispatch group Resources allocation, specifically comprises:
Described access network equipment was combined or divided with code the mode being connected by the time-division with frequency division by the time-division is described dispatch group Resources allocation.
7. method as claimed in claim 5, is characterized in that, described access network equipment also comprises after being described dispatch group Resources allocation:
Described access network equipment is by high-rise common signaling or the resource of notifying described dispatch group to distribute by physical layer control signal.
8. method as claimed in claim 7, is characterized in that, in UMTS network, when described access network equipment is specially base station, the resource that described access network equipment notifies described dispatch group to distribute by high-rise common signaling, specifically comprises:
Base station receives the scheduling request information of carrying dispatch group sign that radio network controller (RNC) sends;
Described RNC is given by distributed resource notification in base station, and the resource of notifying described dispatch group to distribute by high-rise common signaling by described RNC;
Base station receives the dispatching response message of carrying dispatch group sign that described RNC returns;
Or when described access network equipment is specially RNC, the resource that described access network equipment notifies described dispatch group to distribute by high-rise common signaling, specifically comprises:
To base station, send the scheduling request information of carrying dispatch group sign;
Receive after the resource of the distribution of notifying described base station the resource of notifying described dispatch group to distribute by high-rise common signaling;
To base station, return to the dispatching response message of carrying dispatch group sign.
9. method as claimed in claim 7, it is characterized in that, in LTE network, mode by time-division and frequency division associating is described dispatch group Resources allocation, and described high-rise common signaling comprises: group Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI, frequency domain resource starting point, frequency domain resource granularity, group member's number, the terminal number of each subframe scheduling are, sign, group scheduling physical downlink control channel PDCCH entry-into-force time in the group of terminal;
In UMTS network, mode by time-division and code minute associating is described dispatch group Resources allocation, described high-rise common signaling comprises: group high speed descending sharing channel Radio Network Temporary Identifier H-RNTI or group strengthen dedicated channel Radio Network Temporary Identifier E-RNTI, code territory resource starting point, code territory resource granularity, group member's number, the terminal number that each time slot is corresponding, sign in the group of terminal, the starting point time slot of time-domain resource high-speed downstream Physical Shared Channel HS-PDSCH or enhancing uplink physical channel E-PUCH, the shared control channel HS-SCCH of group scheduling high speed descending sharing channel or the absolute grant channel E-AGCH entry-into-force time that strengthens dedicated channel,
In LTE network, mode by time-division and frequency division associating is described dispatch group Resources allocation, and described physical layer control signal comprises: the terminal number of frequency domain resource starting point, frequency domain resource granularity, group member's number, each subframe scheduling, group scheduling PDCCH entry-into-force time;
In UMTS network, a mode by time-division and code minute associating is described dispatch group Resources allocation, and described physical layer control signal comprises: code territory resource starting point, code territory resource granularity, group member's number, terminal number, time-domain resource HS-PDSCH or E-PUCH starting point time slot, group scheduling HS-SCCH or E-AGCH entry-into-force time that each time slot is corresponding.
10. a group scheduling device, is characterized in that, comprising:
Determining unit, for determining the characteristic group sign of the terminal establishing a communications link, described characteristic group is designated the sign of distributing to described terminal when signing according to the characteristic of described terminal;
Division unit, for according to described characteristic group sign, is divided into described characteristic group by described terminal and identifies in corresponding dispatch group;
Scheduling unit, converges for determining that described dispatch group completes, and the terminal in described dispatch group all completes after the foundation of communication connection, and this dispatch group is carried out to group scheduling.
11. devices as claimed in claim 10, is characterized in that, described division unit also for:
According to described characteristic group sign, after described terminal is divided into described characteristic group and identifies in corresponding dispatch group, determine sign in the group of described terminal;
Described scheduling unit carries out group scheduling to this dispatch group, specifically comprises:
Described access network equipment, according to identifying in the group of each terminal in described dispatch group, carries out group scheduling to this dispatch group.
12. devices as claimed in claim 11, is characterized in that, described division unit is determined the interior sign of the group of described terminal, specifically comprises:
For one of this terminal distribution effectively identifies in group in this dispatch group; Or
Sign in the group of this terminal agreement when signing is defined as identifying in the group of described terminal in this dispatch group.
13. devices as claimed in claim 10, is characterized in that, described scheduling unit is determined that described dispatch group completes and converged, specifically comprises:
Determine that the terminal number in described dispatch group reaches predefined number threshold value, described number threshold value determines according to network load, or the described number threshold value signing number of members that is described dispatch group; And/or
Reach predefined time threshold the settling time of determining described dispatch group.
14. devices as claimed in claim 10, is characterized in that, described scheduling unit carries out group scheduling to this dispatch group, specifically comprises:
For described dispatch group Resources allocation, and in described resource, realize with described dispatch group in the transfer of data of terminal.
15. devices as claimed in claim 14, is characterized in that, described scheduling unit is described dispatch group Resources allocation, specifically comprises:
By the time-division, being combined or divide with code the mode being connected by the time-division with frequency division is described dispatch group Resources allocation.
16. devices as claimed in claim 14, is characterized in that, described scheduling unit also for:
After described dispatch group Resources allocation, by high-rise common signaling or the resource of notifying described dispatch group to distribute by physical layer control signal.
17. devices as claimed in claim 16, is characterized in that, in universal mobile telecommunications system UMTS network, the resource that described scheduling unit notifies described dispatch group to distribute by high-rise common signaling, specifically comprises:
Receive the scheduling request information of carrying dispatch group sign that radio network controller (RNC) sends;
By distributed resource notification, give described RNC, and the resource of notifying described dispatch group to distribute by high-rise common signaling by described RNC;
Receive the dispatching response message of carrying dispatch group sign that described RNC returns;
Or
To base station, send the scheduling request information of carrying dispatch group sign;
Receive after the resource of the distribution of notifying described base station the resource of notifying described dispatch group to distribute by high-rise common signaling;
To base station, return to the dispatching response message of carrying dispatch group sign.
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| CN201210316604.8A CN103687034A (en) | 2012-08-30 | 2012-08-30 | Group scheduling method and device |
| PCT/CN2013/080546 WO2014032497A1 (en) | 2012-08-30 | 2013-07-31 | Group scheduling method and device |
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| CN201210316604.8A CN103687034A (en) | 2012-08-30 | 2012-08-30 | Group scheduling method and device |
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