CN101984719B - 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
本发明公开了一种M2M的DCI资源复用方法及设备，其包括：机器类型通信设备监听物理下行控制信道信息，所述物理下行控制信道信息中包括用于间接指示上行资源许可或下行资源分配的特殊的无线网络临时标识；根据所述物理下行控制信道信息中指示的时频资源接收多用户复用数据包；以及在所述多用户复用数据包中查找对应的上行资源许可或下行资源分配信息。本发明还公开了与前述方法相应的设备。本发明的方法及设备可以在DCI资源受限而RRB资源较为充裕的情况下，充分利用DCI资源，进而避免PRB资源的浪费，显著提高资源利用率。
The invention discloses an M2M DCI resource multiplexing method and device, which includes: a machine type communication device monitors physical downlink control channel information, and the physical downlink control channel information includes information for indirectly indicating uplink resource permission or downlink resource allocation. Receive a multi-user multiplexed data packet according to the time-frequency resource indicated in the physical downlink control channel information; and search for the corresponding uplink resource grant or downlink resource in the multi-user multiplexed data packet Assignment information. The invention also discloses equipment corresponding to the aforementioned method. The method and device of the present invention can make full use of DCI resources when DCI resources are limited but RRB resources are relatively abundant, thereby avoiding waste of PRB resources 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 residential quarter, there is a large amount of MTC device nodes, such as intelligent electric meter, intellectual water meter, intelligent gas meter, Fire inductor, hydrology inductor, seismic sensor cable device, intelligent appliance etc., need to 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, for the impact of reduce MTC equipment on the H2H customer service, the MTC device data is transmitted employed control channel resource and shared channel resources has all been carried out strict restriction.
Under this strict restriction, 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, be 5M in system bandwidth, adopt PDCCH form 1, MTC equipment to use system resource to account under 25% the situation, can be for PRB (the Physical Resource Block of MTC, 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 license), DLAssignment (Downlink Assignment, the downlink resource indication) mean allocation between then is used for the UL grant of ascending resource license and the spendable DCI of DL Assignment of downlink resource indication and respectively only has respectively 1.That is to say in a TTI (Transmission Time Interval, Transmission Time Interval), only have 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 hydraulic performance decline.
Therefore, demand urgently providing the DCI resource multiplexing method of a kind of improved M2M and equipment to overcome defects.
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 in the situation that the RRB resource is comparatively abundant, take full advantage 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 license or downlink resource distribution in the described PDCCH information; Running time-frequency resource according to described PDCCH information indicating receives the multi-user multiplexing data bag; 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 license or downlink resource assignment information, described multiuser multiplexing frame header comprises at least one multiuser multiplexing frame head, the corresponding described ascending resource license 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 for 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 license 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 for monitoring PDCCH information, comprises the special RNTI for the indication ascending resource is permitted or downlink resource distributes indirectly in the described PDCCH information; Described multi-user multiplexing data bag acquiring unit receives the multi-user multiplexing data bag for the running time-frequency resource of the PDCCH information indicating that listens to according to described PDCCH information monitoring unit; The described unit of searching is used for searching corresponding ascending resource license 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 indirectly indication ascending resource license 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 license 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 and determines whether to send 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 of indirectly indication ascending resource license or downlink resource distribution; 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 license 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 sending the described PDCCH information that comprises described special RNTI according to whether determining according to current resource distribution by described information transmitting unit.
Compared with prior art, the DCI resource multiplexing method of M2M of the present invention and equipment are by using special RNTI indirectly to indicate ascending resource license and downlink resource to distribute, when the MTC Supervision is heard PDCCH information with this special RNTI, from the running time-frequency resource of this PDCCH information indicating, receive the multi-user multiplexing data bag, then in described multi-user multiplexing data bag, search ascending resource license or downlink resource assignment information to oneself.Like this, in the time, can use two DCI resources at a TTI, a plurality of ascending resource licenses and downlink resource are distributed the MTC equipment that sends to simultaneously.For DCI resource anxiety and the relatively well-to-do scene of PRB resource can take full advantage of the DCI resource, and then avoid the waste of PRB resource, significantly improve resource utilization.
By following description also by reference to the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used for explaining 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, similar element numbers represents similar element 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 in the situation that the RRB resource is comparatively abundant, takes full advantage 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 license 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, the flexibility that distributes to increase the DCI resource.Further, also comprised the running time-frequency resource at multi-user multiplexing data bag place and the type of this multi-user multiplexing data bag in this PDCCH information: the license of indication ascending resource or indicating downlink resource are distributed.
Step S102: the running time-frequency resource according to described PDCCH information indicating receives the multi-user multiplexing data bag.Fig. 2 is the structural representation of the multi-user multiplexing data bag of indication ascending resource license, 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 distribution.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 for 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 license or downlink resource assignment information.Described ascending resource License Info comprises the ascending resource license and uses the ascending time slot of described ascending resource license.After MTC equipment receives aforementioned multi-user multiplexing data bag, find one's own ascending resource license or downlink resource assignment information according to the C-RNTI in the multiuser multiplexing frame head, for the MAC PDU that finds, equally process according to the MAC PDU that normally receives.
Because the DCI resource multiplexing method of the M2M of present embodiment is by using special RNTI indirectly to indicate ascending resource license and downlink resource to distribute, when the MTC Supervision is heard PDCCH information with this special RNTI, from the running time-frequency resource of this PDCCH information indicating, receive the multi-user multiplexing data bag, then in described multi-user multiplexing data bag, search ascending resource license or downlink resource assignment information to oneself.Like this, in the time, can use two DCI resources at a TTI, a plurality of ascending resource licenses and downlink resource are distributed the MTC equipment that sends to simultaneously.For DCI resource anxiety and the relatively well-to-do scene of PRB resource can take full advantage 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 for monitoring PDCCH information, comprises the special RNTI for the indication ascending resource is permitted or downlink resource distributes indirectly in the described PDCCH information; Described multi-user multiplexing data bag acquiring unit 52 receives the multi-user multiplexing data bag for the running time-frequency resource of the PDCCH information indicating that listens to according to described PDCCH information monitoring unit 51; The described unit 53 of searching is used for searching corresponding ascending resource license 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 indirectly indication ascending resource license 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, the flexibility that distributes to increase the DCI resource.
Step S602: send PDCCH information to MTC equipment, comprise described special RNTI in the described PDCCH information.Further, also comprised the running time-frequency resource at multi-user multiplexing data bag place and the type of this multi-user multiplexing data bag in this PDCCH information: the license of indication ascending resource or indicating downlink resource are distributed.
Step S603: send the multi-user multiplexing data bag to MTC equipment, comprise the ascending resource license 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 and determines whether to send the described PDCCH information that comprises described special RNTI, like this, the method for can be only using present embodiment in DCI resource anxiety in the relatively well-to-do situation of PRB resource.
Because the DCI resource multiplexing method of the M2M of present embodiment is by using special RNTI indirectly to indicate ascending resource license and downlink resource to distribute, when the MTC Supervision is heard PDCCH information with this special RNTI, from the running time-frequency resource of this PDCCH information indicating, receive the multi-user multiplexing data bag, then in described multi-user multiplexing data bag, search ascending resource license or downlink resource assignment information to oneself.Like this, in the time, can use two DCI resources at a TTI, a plurality of ascending resource licenses and downlink resource are distributed the MTC equipment that sends to simultaneously.For DCI resource anxiety and the relatively well-to-do scene of PRB resource can take full advantage 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 of indirectly indication ascending resource license or downlink resource distribution; 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 license 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 sending the described PDCCH information that comprises described special RNTI according to whether determining according to current resource distribution by described information transmitting unit 72.
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 do; 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.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102395160B (en) | 2011-06-28 | 2017-04-12 | 中兴通讯股份有限公司 | Method and system for controlling data transmission of user equipment |
| WO2013040752A1 (en) * | 2011-09-20 | 2013-03-28 | Renesas Mobile Corporation | Enhanced mac padding for data transmissions |
| JP6122855B2 (en) | 2011-09-30 | 2017-04-26 | インターデイジタル パテント ホールディングス インコーポレイテッド | Device communication using reduced channel bandwidth |
| WO2013063780A1 (en) * | 2011-11-03 | 2013-05-10 | Renesas Mobile Corporation | Method and apparatus for transmitting machine type communication data via a packet downlink control channel |
| CN102413576B (en) * | 2011-12-21 | 2014-04-09 | 电信科学技术研究院 | Physical downlink control channel (PDCCH) transmitting and receiving methods and equipment |
| CN103200683A (en) * | 2012-01-04 | 2013-07-10 | 中国移动通信集团公司 | Method, device and system of machine terminal communication |
| ES2548428T3 (en) * | 2012-05-07 | 2015-10-16 | Mstar Semiconductor, Inc. | Receiving and demodulating apparatus of OFDM symbols and demodulation method |
| CN103582098A (en) * | 2012-07-18 | 2014-02-12 | 中国移动通信集团公司 | Downlink control channel sending method and receiving method and corresponding device |
| US9553701B2 (en) | 2012-09-26 | 2017-01-24 | Interdigital Patent Holdings, Inc. | Methods, systems and apparatuses for operation in long-term evolution systems |
| WO2014085964A1 (en) * | 2012-12-03 | 2014-06-12 | 富士通株式会社 | Information transmission method, information detection method, and device and system thereof |
| WO2014169415A1 (en) * | 2013-04-15 | 2014-10-23 | 华为技术有限公司 | Data transmission method and apparatus, network-side device and terminal |
| WO2015123843A1 (en) * | 2014-02-20 | 2015-08-27 | 华为技术有限公司 | Resource scheduling method, data transmission method, and device |
| CN105450374B (en) * | 2014-08-25 | 2018-08-31 | 联想(北京)有限公司 | A kind of information processing method, system and base station |
| WO2016145636A1 (en) * | 2015-03-18 | 2016-09-22 | 华为技术有限公司 | Network device, terminal and transmission method for downlink control information |
| WO2017028071A1 (en) * | 2015-08-14 | 2017-02-23 | 华为技术有限公司 | Downlink control information receiving and sending methods and devices |
| WO2017051863A1 (en) * | 2015-09-24 | 2017-03-30 | 株式会社Ｎｔｔドコモ | User device and transmission method |
| ES2986890T3 (en) | 2016-08-17 | 2024-11-13 | Lenovo Innovations Ltd Hong Kong | Indication of resource allocation for additional EMTC |
| CN108270529B (en) | 2016-12-30 | 2021-04-13 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for allocating uplink resources |
| WO2020024271A1 (en) * | 2018-08-03 | 2020-02-06 | Oppo广东移动通信有限公司 | Resource allocation method, terminal device, and network device |
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