CN101984719A - Resource reuse method and equipment for machine-to-machine (M2M) downlink control information - Google Patents
Resource reuse method and equipment for machine-to-machine (M2M) downlink control information Download PDFInfo
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Abstract
The invention discloses a resource reuse method and equipment for machine-to-machine (M2M). The method comprises the following steps: machine type communication equipment monitors physical downlink control channel information which comprises a specific radio network temporary identification for indirectly indicating uplink resource consent or downlink resource allocation; the machine type communication equipment receives a multi-user multiplex packet according to time frequency resource indicated by the physical downlink control channel information; and the machine type communication equipment searches corresponding uplink resource consent or downlink resource allocation in the multi-user multiplex packet. The invention also discloses the equipment corresponding to the above-mentioned method. The method and the equipment of the invention can take full advantages of the DCI resource under the condition that the DCI resource is limited but routine response behavior (RRB) resource is relatively abundant, thereby avoiding waste on physical resource block (PRB) resource and significantly improving resource utilization.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to DCI (Downlink Control Information, Downlink Control Information) resource multiplexing method and the equipment of a kind of M2M (Machine-to-Machine, machine to machine).
Background technology
MTC (Machine-type communication, Machine Type communication) also claims " Internet of Things ", refers to the communication between the M2M, is a kind of communication mode that does not need people's participation.It is generally acknowledged, in a sub-district, there is a large amount of MTC device nodes, as intelligent electric meter, intellectual water meter, intelligent natural gas meter, Fire inductor, hydrology inductor, seismic sensor cable device, intelligent appliance or the like, need carry out transfer of data simultaneously when a large amount of MTC equipment and during connecting system, may cause data congestion.In addition, the MTC equipment of magnanimity carries out transfer of data and also can H2H (Hand to Hand, handheld terminal is to hand-held terminal) user's business be exerted an influence.Under the present universally recognized application scenarios of each company, in order to reduce of the influence of MTC equipment as far as possible, the MTC device data is transmitted employed control channel resource and shared channel resources has all been carried out strict restriction to the H2H customer service.
Under the restriction of this strictness, when magnanimity MTC equipment carries out transfer of data simultaneously, it is at full stretch that control channel resource and shared channel resources will become, wherein, the control channel resource, especially the DCI resource of descending PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) is particularly evident.As in the application scenarios that proposes of emerging company, is 5M in system bandwidth, adopts PDCCH form 1, MTC equipment using system resource to account under 25% the situation, can be for PRB (the Physical Resource Block of MTC use, Physical Resource Block) resource is 6, and the DCI resource is 3.Suppose these 3 DCI resources the hypothesis these 3 DCI resources at RAR (RandomAccessResponse, accidental access response), UL grant (Uplink grant, the ascending resource permission), DLAssignment (Downlink Assignment, the downlink resource indication) mean allocation between then is used for the UL grant of ascending resource permission and the spendable DCI of DL Assignment of downlink resource indication and respectively has only 1 respectively.That is to say in a TTI (Transmission Time Interval, Transmission Time Interval), have only a user can obtain UL grant and DL assignment.In this case, even there is shared channel resources in system, also can't indicates to MTC equipment by PDCCH timely and carry out up transmission or descending reception.This is at full stretch for resource, and a large amount of MTC device queues wait for the scene of transfer of data, have caused the serious wasting of resources and have caused decreased performance.
Therefore, demand urgently providing the DCI resource multiplexing method of a kind of improved M2M and equipment to overcome above-mentioned defective.
Summary of the invention
The technical problem to be solved in the present invention is to provide DCI resource multiplexing method and the equipment of a kind of M2M, it can be resource-constrained at DCI and under the situation that the RRB resource is comparatively abundant, make full use of the DCI resource, and then avoid the waste of PRB resource, significantly improve resource utilization.
In order to solve the problems of the technologies described above, the invention provides the DCI resource multiplexing method of a kind of M2M, it comprises: MTC equipment is monitored PDCCH information, comprises the special RNTI that is used to indicate ascending resource permission or downlink resource distribution in the described PDCCH information; Receive the multi-user multiplexing data bag according to the running time-frequency resource of indicating in the described PDCCH information; And in described multi-user multiplexing data bag, search corresponding ascending resource and permit or the downlink resource assignment information.
As the preferred embodiments of the present invention, described multi-user multiplexing data bag comprises a multiuser multiplexing frame header, at least one ascending resource permission or downlink resource assignment information, described multiuser multiplexing frame header comprises at least one multiuser multiplexing frame head, corresponding described ascending resource permission of each described multiuser multiplexing frame head or downlink resource assignment information.
Further, described multiuser multiplexing frame head comprise MTC equipment C-RNTI, be used for showing that whether current multiuser multiplexing frame head is that the E field and being used to of last height head of described multiuser multiplexing frame header shows that the described ascending resource of current multiuser multiplexing frame head correspondence is permitted or the L field of the length of downlink resource assignment information.
Particularly, described ascending resource License Info comprises ascending resource permission and the ascending time slot that uses described ascending resource to permit.
Preferably, the value of described special RNTI is chosen in FFF4～FFFD.
The present invention also provides a kind of equipment that uses preceding method, it comprises PDCCH information monitoring unit, multi-user multiplexing data bag acquiring unit and searches the unit, wherein, described PDCCH information monitoring unit is used to monitor PDCCH information, comprises the special RNTI that is used for indicating indirectly ascending resource permission or downlink resource distribution in the described PDCCH information; The running time-frequency resource that described multi-user multiplexing data bag acquiring unit is used for indicating according to the PDCCH information that described PDCCH information monitoring unit listens to receives the multi-user multiplexing data bag; The described unit of searching is used for searching corresponding ascending resource permission or downlink resource assignment information at the multi-user multiplexing data bag that described multi-user multiplexing data bag acquiring unit receives.
The present invention also provides the DCI resource multiplexing method of a kind of M2M, and it comprises: the special RNTI that is used for indicating indirectly ascending resource permission or downlink resource distribution for the MTC device definition; Send PDCCH information to MTC equipment, comprise described special RNTI in the described PDCCH information; And to MTC equipment transmission multi-user multiplexing data bag, comprise the ascending resource permission or the downlink resource assignment information that send to a plurality of users in the described multi-user multiplexing data bag, described multi-user data bag is arranged in the running time-frequency resource of the PDCCH information indication of described information transmitting unit transmission.
Preferably, the DCI resource multiplexing method of described M2M also comprises according to current resource distribution decision whether sending the described PDCCH information that comprises described special RNTI.
The present invention also provides a kind of equipment that uses preceding method, and it comprises dispensing unit, information transmitting unit and multi-user data bag transmitting element.Wherein, described dispensing unit is used to the MTC device definition to be used for the special RNTI that indicates ascending resource permission or downlink resource to distribute indirectly; Described information transmitting unit is used for sending PDCCH information to MTC equipment, comprises the special RNTI of described dispensing unit definition in the described PDCCH information; Described multi-user multiplexing data bag transmitting element is used for sending the multi-user multiplexing data bag to MTC equipment, comprise the ascending resource permission or the downlink resource assignment information that send to a plurality of users in the described multi-user multiplexing data bag, described multi-user data bag is arranged in the running time-frequency resource of the PDCCH channel information indication of described information transmitting unit transmission.
Preferably, described equipment also comprises judging unit, and described judging unit is used for according to whether sending the described PDCCH information that comprises described special RNTI by described information transmitting unit according to current resource distribution decision.
Compared with prior art, the DCI resource multiplexing method of M2M of the present invention and equipment indicate ascending resource permission and downlink resource to distribute by using special RNTI indirectly, when MTC equipment listens to the PDCCH information that has this special RNTI, receive the multi-user multiplexing data bag in the running time-frequency resource of from this PDCCH information, indicating, in described multi-user multiplexing data bag, search ascending resource permission or downlink resource assignment information then to oneself.Like this, in the time, can use two DCI resources, a plurality of ascending resource permissions and downlink resource are distributed the MTC equipment that sends to simultaneously at a TTI.For DCI resource anxiety and the well-to-do relatively scene of PRB resource can make full use of the DCI resource, and then avoid the waste of PRB resource, significantly improve resource utilization.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the flow chart of an embodiment of the DCI resource multiplexing method of M2M of the present invention.
Fig. 2 is the structural representation of a kind of multi-user multiplexing data bag in the DCI resource multiplexing method of M2M shown in Figure 1.
Fig. 3 is the structural representation of another multi-user multiplexing data bag in the DCI resource multiplexing method of M2M shown in Figure 1.
Fig. 4 is the structural representation of the multiuser multiplexing frame head of Fig. 2 and multi-user multiplexing data bag shown in Figure 3.
Fig. 5 is the structural representation of an embodiment of equipment of the DCI resource multiplexing method of use M2M shown in Figure 1.
Fig. 6 is the flow chart of another embodiment of the DCI resource multiplexing method of M2M of the present invention.
Fig. 7 is the structural representation of an embodiment of the equipment of the DCI resource multiplexing method of use M2M shown in Figure 6.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the invention provides DCI resource multiplexing method and the equipment of a kind of M2M, it can be resource-constrained at DCI and under the situation that the RRB resource is comparatively abundant, makes full use of the DCI resource, and then avoid the waste of PRB resource, significantly improves resource utilization.
Elaborate the technical scheme of the embodiment of the invention below in conjunction with accompanying drawing.Fig. 1 is the flow chart of an embodiment of the DCI resource multiplexing method of M2M of the present invention, and present embodiment is described the DCI resource multiplexing method of M2M of the present invention in detail from the MTC equipment side.As shown in Figure 1, the DCI resource multiplexing method of the M2M of present embodiment comprises:
Step S101:MTC equipment is monitored PDCCH information, comprises the special RNTI that is used to indicate ascending resource permission or downlink resource distribution in the described PDCCH information.Concrete, this special RNTI can be defined as MTC-RNTI, and its value can be chosen in the RNTI value FFF4～FFFD that reserves at present, to increase the flexibility of DCI resource allocation.Further, the running time-frequency resource at multi-user multiplexing data bag place and the type of this multi-user multiplexing data bag have also been comprised in this PDCCH information: permission of indication ascending resource or indicating downlink resource allocation.
Step S102: receive the multi-user multiplexing data bag according to the running time-frequency resource of indicating in the described PDCCH information.Fig. 2 is the structural representation of the multi-user multiplexing data bag of indication ascending resource permission, as shown in Figure 2, described multi-user multiplexing data bag comprises the i.e. MTC grant information among the figure of a multiuser multiplexing frame header and a plurality of ascending resource License Info, described multiuser multiplexing frame header comprises a plurality of multiuser multiplexing frame heads, be the sub-head of C-RNTI/E/F/L, the corresponding described ascending resource License Info of each described multiuser multiplexing frame head.Fig. 3 is the structural representation of the multi-user multiplexing data bag of indicating downlink resource allocation.As shown in Figure 3, described multi-user multiplexing data bag comprises a multiuser multiplexing frame header and a plurality of downlink resource assignment information, i.e. MAC PDU, and this MAC PDU is the MAC PDU form shown in the 3GPPTS 36.321.Described multiuser multiplexing frame header comprises a plurality of multiuser multiplexing frame heads, i.e. the sub-head of C-RNTI/E/F/L, the corresponding described MAC PDU of each described multiuser multiplexing frame head.Further, in conjunction with Fig. 4, described multiuser multiplexing frame head comprise MTC equipment C-RNTI, be used for showing that whether current multiuser multiplexing frame head is that the E field and being used to of last height head of described multiuser multiplexing frame header shows that the described ascending resource of current multiuser multiplexing frame head correspondence is permitted or the L field of the length of downlink resource assignment information.
Step S103: in described multi-user multiplexing data bag, search corresponding ascending resource permission or downlink resource assignment information.Described ascending resource License Info comprises the ascending resource permission and uses the ascending time slot of described ascending resource permission.After MTC equipment receives aforementioned multi-user multiplexing data bag, find one's own ascending resource permission or downlink resource assignment information according to the C-RNTI in the multiuser multiplexing frame head, for the MAC PDU that finds, equally handle according to the MAC PDU that normally receives.
Because the DCI resource multiplexing method of the M2M of present embodiment indicates ascending resource permission and downlink resource to distribute by using special RNTI indirectly, when MTC equipment listens to the PDCCH information that has this special RNTI, receive the multi-user multiplexing data bag in the running time-frequency resource of from this PDCCH information, indicating, in described multi-user multiplexing data bag, search ascending resource permission or downlink resource assignment information then to oneself.Like this, in the time, can use two DCI resources, a plurality of ascending resource permissions and downlink resource are distributed the MTC equipment that sends to simultaneously at a TTI.For DCI resource anxiety and the well-to-do relatively scene of PRB resource can make full use of the DCI resource, and then avoid the waste of PRB resource, significantly improve resource utilization.
Fig. 5 is the structural representation of an embodiment of equipment of the DCI resource multiplexing method of the aforementioned M2M of use, and the equipment of present embodiment can be MTC equipment.As shown in Figure 5, the equipment of present embodiment comprises PDCCH information monitoring unit 51, multi-user multiplexing data bag acquiring unit 52 and searches unit 53, wherein, described PDCCH information monitoring unit 51 is used to monitor PDCCH information, comprises the special RNTI that is used for indicating indirectly ascending resource permission or downlink resource distribution in the described PDCCH information; The running time-frequency resource that described multi-user multiplexing data bag acquiring unit 52 is used for indicating according to the PDCCH information that described PDCCH information monitoring unit 51 listens to receives the multi-user multiplexing data bag; The described unit 53 of searching is used for searching corresponding ascending resource permission or downlink resource assignment information at the multi-user multiplexing data bag that described multi-user multiplexing data bag acquiring unit 52 receives.
Fig. 6 is the flow chart of another embodiment of the DCI resource multiplexing method of M2M of the present invention, and present embodiment is described from the DCI resource multiplexing method of base station side to M2M of the present invention.As shown in Figure 6, the DCI resource multiplexing method of the M2M of present embodiment may further comprise the steps:
Step S601: the special RNTI that is used for indicating indirectly ascending resource permission or downlink resource distribution for the MTC device definition.Concrete, this special RNTI can be defined as MTC-RNTI, and its value can be chosen in the RNTI value FFF4～FFFD that reserves at present, to increase the flexibility of DCI resource allocation.
Step S602: send PDCCH information to MTC equipment, comprise described special RNTI in the described PDCCH information.Further, the running time-frequency resource at multi-user multiplexing data bag place and the type of this multi-user multiplexing data bag have also been comprised in this PDCCH information: permission of indication ascending resource or indicating downlink resource allocation.
Step S603: send the multi-user multiplexing data bag to MTC equipment, comprise the ascending resource permission or the downlink resource assignment information that send to a plurality of users in the described multi-user multiplexing data bag, described multi-user data bag is arranged in the running time-frequency resource of the PDCCH information indication of described information transmitting unit transmission.The structure of described multi-user multiplexing data bag is identical with previous embodiment, is not described in detail at this.
Alternatively, the DCI resource multiplexing method of described M2M also comprises according to current resource distribution decision whether sending the described PDCCH information that comprises described special RNTI, like this, the method for can be only using present embodiment under the well-to-do relatively situation of PRB resource in DCI resource anxiety.
Because the DCI resource multiplexing method of the M2M of present embodiment indicates ascending resource permission and downlink resource to distribute by using special RNTI indirectly, when MTC equipment listens to the PDCCH information that has this special RNTI, receive the multi-user multiplexing data bag in the running time-frequency resource of from this PDCCH information, indicating, in described multi-user multiplexing data bag, search ascending resource permission or downlink resource assignment information then to oneself.Like this, in the time, can use two DCI resources, a plurality of ascending resource permissions and downlink resource are distributed the MTC equipment that sends to simultaneously at a TTI.For DCI resource anxiety and the well-to-do relatively scene of PRB resource can make full use of the DCI resource, and then avoid the waste of PRB resource, significantly improve resource utilization.
Fig. 7 is the structural representation of an embodiment of equipment of the DCI resource multiplexing method of the aforementioned M2M of use, and the equipment of present embodiment can be eNB (evolved Node B).As shown in Figure 7, the equipment of present embodiment comprises dispensing unit 71, information transmitting unit 72 and multi-user data bag transmitting element 73.Wherein, described dispensing unit 71 is used to the MTC device definition to be used for the special RNTI that indicates ascending resource permission or downlink resource to distribute indirectly; Described information transmitting unit 72 is used for sending PDCCH information to MTC equipment, comprises the special RNTI of described dispensing unit 71 definition in the described PDCCH information; Described multi-user multiplexing data bag transmitting element 73 is used for sending the multi-user multiplexing data bag to MTC equipment, comprise the ascending resource permission or the downlink resource assignment information that send to a plurality of users in the described multi-user multiplexing data bag, described multi-user data bag is arranged in the running time-frequency resource of the PDCCH channel information indication of described information transmitting unit 72 transmissions.
The equipment of present embodiment also comprises judging unit 74, and described judging unit 74 is used for according to whether sending the described PDCCH information that comprises described special RNTI by described information transmitting unit 72 according to current resource distribution decision.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be applied in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the Downlink Control Information resource multiplexing method of a M2M is characterized in that, comprising:
The Machine Type communication equipment is monitored Physical Downlink Control Channel information, comprises the special Radio Network Temporary Identifier that is used for indicating indirectly ascending resource permission or downlink resource distribution in the described Physical Downlink Control Channel information;
Receive the multi-user multiplexing data bag according to the running time-frequency resource of indicating in the described Physical Downlink Control Channel information; And in described multi-user multiplexing data bag, search corresponding ascending resource and permit or the downlink resource assignment information.
2. Downlink Control Information resource multiplexing method according to claim 1, it is characterized in that, described multi-user multiplexing data bag comprises a multiuser multiplexing frame header, at least one ascending resource permission or downlink resource assignment information, described multiuser multiplexing frame header comprises at least one multiuser multiplexing frame head, corresponding described ascending resource permission of each described multiuser multiplexing frame head or downlink resource assignment information.
3. Downlink Control Information resource multiplexing method according to claim 2, it is characterized in that, described multiuser multiplexing frame head comprise the Machine Type communication equipment Cell Radio Network Temporary Identifier/Identity, Cell-RNTI, be used for showing that whether current multiuser multiplexing frame head is that the E field and being used to of last height head of described multiuser multiplexing frame header shows that the described ascending resource of current multiuser multiplexing frame head correspondence is permitted or the L field of the length of downlink resource assignment information.
4. according to claim 1 or 2 or 3 described Downlink Control Information resource multiplexing methods, it is characterized in that described ascending resource License Info comprises the ascending resource permission and uses the ascending time slot of described ascending resource permission.
5. according to claim 1 or 2 or 3 described Downlink Control Information resource multiplexing methods, it is characterized in that the value of described special Radio Network Temporary Identifier is chosen in FFF4～FFFD.
6. an equipment that uses Downlink Control Information resource multiplexing method according to claim 1 is characterized in that, comprising:
Physical Downlink Control Channel information monitoring unit is used to monitor Physical Downlink Control Channel information, comprises the special Radio Network Temporary Identifier that is used for indicating indirectly ascending resource permission or downlink resource distribution in the described Physical Downlink Control Channel information;
Multi-user multiplexing data bag acquiring unit, the running time-frequency resource that is used for indicating according to the Physical Downlink Control Channel information that described Physical Downlink Control Channel information monitoring unit listens to receives the multi-user multiplexing data bag; And search the unit, be used for searching corresponding ascending resource permission or downlink resource assignment information at the multi-user multiplexing data bag that described multi-user multiplexing data bag acquiring unit receives.
7. the Downlink Control Information resource multiplexing method of a M2M is characterized in that, comprising:
The special Radio Network Temporary Identifier that is used for indicating indirectly ascending resource permission or downlink resource distribution for the definition of Machine Type communication equipment;
Send Physical Downlink Control Channel information to the Machine Type communication equipment, comprise described special Radio Network Temporary Identifier in the described Physical Downlink Control Channel information; And to Machine Type communication equipment transmission multi-user multiplexing data bag, comprise the ascending resource permission or the downlink resource assignment information that send to a plurality of users in the described multi-user multiplexing data bag, described multi-user data bag is arranged in the running time-frequency resource of the Physical Downlink Control Channel information indication of described information transmitting unit transmission.
8. Downlink Control Information resource multiplexing method according to claim 7 is characterized in that, also comprises according to current resource distribution decision whether sending the described Physical Downlink Control Channel information that comprises described special Radio Network Temporary Identifier.
9. an equipment that uses Downlink Control Information resource multiplexing method according to claim 7 is characterized in that, comprising:
Dispensing unit is used to the definition of Machine Type communication equipment to be used for the special Radio Network Temporary Identifier of indicating ascending resource permission or downlink resource to distribute indirectly;
Information transmitting unit is used for sending Physical Downlink Control Channel information to the Machine Type communication equipment, comprises the special Radio Network Temporary Identifier of described dispensing unit definition in the described Physical Downlink Control Channel information; And multi-user multiplexing data bag transmitting element, be used for sending the multi-user multiplexing data bag to the Machine Type communication equipment, comprise the ascending resource permission or the downlink resource assignment information that send to a plurality of users in the described multi-user multiplexing data bag, described multi-user data bag is arranged in the running time-frequency resource of the Physical Downlink Control Channel information indication of described information transmitting unit transmission.
10. equipment according to claim 9, it is characterized in that, also comprise judging unit, be used for whether sending the described Physical Downlink Control Channel information that comprises described special Radio Network Temporary Identifier by described information transmitting unit according to current resource distribution decision.
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| CN 201010547447 CN101984719B (en) | 2010-11-17 | 2010-11-17 | Resource reuse method and equipment for machine-to-machine (M2M) downlink control information |
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| CN 201010547447 CN101984719B (en) | 2010-11-17 | 2010-11-17 | Resource reuse method and equipment for machine-to-machine (M2M) downlink control information |
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