CN103227704A - Method and equipment for machine type communication (MTC) - Google Patents
Method and equipment for machine type communication (MTC) Download PDFInfo
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- CN103227704A CN103227704A CN201210021450XA CN201210021450A CN103227704A CN 103227704 A CN103227704 A CN 103227704A CN 201210021450X A CN201210021450X A CN 201210021450XA CN 201210021450 A CN201210021450 A CN 201210021450A CN 103227704 A CN103227704 A CN 103227704A
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Abstract
The invention provides a method and equipment for machine type communication (MTC). The method comprises the steps as follows: utilizing a physical layer downlink control signal channel to transmit downlink service data of MTC; transmitting scheduling information of an uplink resource in the physical layer downlink control signal channel; and transmitting uplink service data of the MTC in a physical layer uplink sub-frame designated by the scheduling information. According to the technical scheme for the MTC, the method can be compatible with a wideband mobile communication system and satisfies the demand of MTC service transmission.
Description
Technical field
The present invention relates to the communications field, relate to a kind of be used to carry out machine class method for communicating and equipment particularly.
Background technology
Along with the develop rapidly of the communication technology, the notion of Internet of Things has been proposed.This means that communication not only will finish interpersonal information transmission, and will finish communicating by letter between people and thing, thing and the thing.Thing can satisfy information intelligent transmission between the various machine of human world quantity with communicating by letter of thing.The business demand of communicating by letter along with machine to machine (M2M, Machine to Machine) grows to even greater heights, and its research on standard and development also progressively launch.This class communication technology unified Definition that third generation partner program 3GPP will have machine to participate in is " communication of machine class " (MTC, Machine Type Communication).Machine class communication MTC is a kind of data communication form that need not one or more entities of man-machine interactively, can be widely used in fields such as intelligent transportation, health care, video monitoring, Smart Home, intelligent grid.
There are some following characteristics in the MTC business: (1) Hypomobility, and MTC equipment has than Hypomobility, and is fixing, low speed moves or only mobile in certain zone, and each terminal data amount may be seldom; (2) the MTC terminal generally is subject to energy, needs the mobile network to have certain power-saving mechanism to guarantee the low-power consumption characteristic of MTC terminal; (3) small data packets transmission, in the MTC business, the packet of MTC device transmission major part is the less packet of size, need properly design aspect signaling traffic load, Internet resources, the time delay, to reduce the influence of small data packets transmission to network; (4) sparse transmission, the transmission of MTC business does not continue, and may be interrupted, and frequency is lower, and the MTC terminal is connected to network in needs transmission data, send or the reception data, becomes off-line state then after transmission is finished.
At present, mainly use global system for mobile communications GSM/ general packet radio service GPRS technology to finish MTC.Yet, in such as mobile communication technologies such as 3G (Third Generation) Moblie 3G, Long Term Evolution (LTE, Long term evolution) communication system, the 4th third-generation mobile communication 4G, typically provide the transfer of data of big capacity, two-forty.How in the mobile communications network of these 3G and super 3G, to carry out MTC and become a research topic of demanding urgently launching.
In existing solution, a solution is by the definition new subscriber equipment (UE corresponding with described wide-band mobile communication network, User equipment) type is supported MTC, therefore this has caused the bigger change to communication standard, compatible poor with existing mobile communications system; Another kind of solution is by the bandwidth that reduces the UE support, simplifies agreement, reduces peak rate etc., utilize existing wide-band mobile communication system technology to realize the communication of MTC terminal, this has run counter to the original intention that described mobile communication system is supported high-speed wideband communication.Therefore, expectation proposes a kind ofly can and to satisfy the data transmission method of the professional transmission requirements of MTC with the wide-band mobile communication system compatibility.
Summary of the invention
The embodiment of the invention provides and has been used to carry out machine class method for communicating and equipment, can be with the wide-band mobile communication system compatibility, can satisfy the professional transmission requirements of MTC, and can between MTC business data transmission and other broadband services transfer of data, switch as required.
On the one hand, provide a kind of machine class method for communicating of carrying out, having comprised: utilized the physical layer descending control channel to transmit the downlink service data of machine class communication; In this physical layer descending control channel, transmit the schedule information of ascending resource; In the specified physical layer sub-frame of uplink of this schedule information, transmit the uplink business data of machine class communication.
On the other hand, provide a kind of equipment that carries out the communication of machine class, having comprised: first communication unit is used to utilize the physical layer descending control channel to transmit the downlink service data of machine class communication; The second communication unit is used for the schedule information at this physical layer descending control channel transmission ascending resource; And third communication unit, be used for transmitting the uplink business data of machine class communication at the specified physical layer sub-frame of uplink of this schedule information.
Carry out in the technical scheme of machine class communication the embodiment of the invention above-mentioned, on the basis of existing communication protocol, realized the downlink service data transmission and the uplink business data transmission of the communication of machine class, can and can satisfy the professional transmission requirements of MTC with the wide-band mobile communication system compatibility.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 illustrates the schematic diagram of the frame structure in the Long Term Evolution communication system;
Fig. 2 is the flow chart that carries out machine class method for communicating that illustrates according to the embodiment of the invention;
Fig. 3 is the block diagram that illustrates according to the equipment that carries out the communication of machine class of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.
The technical scheme of the embodiment of the invention, can be applied to various communication systems, for example: code division multiple access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access Wireless), long evolving system (LTE, Long Term Evolution) and enhancing version (LTE-Advanced), time division duplex Long Term Evolution (TD-LTE) and other wide-band communication system etc.
Subscriber equipment (UE, User Equipment), also can be referred to as portable terminal (Mobile Terminal), mobile subscriber equipment etc., can be (for example through wireless access network, RAN, Radio Access Network) communicates with one or more core net, subscriber equipment can be a portable terminal, as mobile phone (or being called " honeycomb " phone) with have the computer of portable terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted, they and wireless access network exchange language and/or data.
The base station, can be the base station (BTS among the CDMA, Base Transceiver Station), also can be the base station (NodeB) among the WCDMA, can also be evolved base station (eNB or e-NodeB, evolutional Node B), Home eNodeB (HeNB among LTE or the LTE-Advanced, Home e-NodeB), and the via node among the LTE-Advanced (Relay Node, RN), the present invention does not limit.
For convenience, following description will be that example describes with the base station eNB and the user equipment (UE) of Long Term Evolution communication system and this system.In the following description of the embodiment of the invention, up communication refers to from the communication direction of user equipment (UE) to base station eNB, and descending communication refers to from the communication direction of base station eNB to user equipment (UE).In the communication of machine class, this user equipment (UE) promptly is the terminal of machine class communication.
Fig. 1 illustrates the schematic diagram of the frame structure in the Long Term Evolution communication system.
In the Long Term Evolution communication system, a frame (10ms) is made up of 10 subframes, each subframe 1ms.The Long Term Evolution communication system typically adopts Frequency Division Duplexing (FDD) (FDD) technology (Class1 among Fig. 1) or time division duplex technology (type 2 among Fig. 1).In the Long Term Evolution communication system that adopts the time division duplex technology, use same frequency spectrum to transmit upward signal and downstream signal, in order to ensure communication requirement, need carry out the switching between the transmission of uplink signal transmissions and downstream signal usually.When descending subframe need switch to sub-frame of uplink, disturb in order to prevent to produce between the up-downgoing, between descending sub frame and sub-frame of uplink, inserted one section special subframe (subframe 1 in Fig. 1 and subframe 6).This special subframe by descending pilot frequency time slot (Down Link Pilot Time Slot, DwPTS), protection at interval (Guard Period, GP) and uplink pilot time slot (Up Link Pilot Time Slot, UpPTS) three parts composition.
Each subframe among Fig. 1 is made up of 14 symbols, and these 14 symbols lay respectively in two time slots (time slot 1,2), each time slot comprise 7 symbols ( symbol 0,1 ... 6).Each descending sub frame mainly comprises: Physical Downlink Control Channel (PDCCH, physical downlink control channel) is used to transmit Downlink Control Information; And Physical Downlink Shared Channel (PDSCH, physical downlink shared channel), be used to transmit downlink service data etc.As example, Physical Downlink Control Channel takies three symbols, for example the symbol 0-2 of time slot 1; And Physical Downlink Shared Channel takies 11 symbols, for example the symbol 0-6 of the symbol 3-6 of time slot 1 and time slot 2.
User equipment (UE) is resolved after receiving physical downlink control channel PDCCH, for example obtain one's own data control information (DCI by blind Detecting, data control information), and obtain the resource distribution location of the Physical Downlink Shared Channel PDSCH in DCI, comprise, information such as modulation coding mode, thus the relevant position in Physical Downlink Shared Channel PDSCH obtains the business datum of this subscriber equipment.
Fig. 2 is the flow chart that carries out machine class method for communicating 200 that illustrates according to the embodiment of the invention.This carries out machine class method for communicating 200 and comprises: utilize the physical layer descending control channel to transmit the downlink service data (S210) of machine class communication; In this physical layer descending control channel, transmit the schedule information (S220) of ascending resource; In the specified physical layer sub-frame of uplink of this schedule information, transmit the uplink business data (S230) of machine class communication.
Describe each step and its realization in detail below in conjunction with the Long Term Evolution communication system.Described physical layer descending control channel is a physical downlink control channel PDCCH in the Long Term Evolution communication system.Long Term Evolution communication system for time division duplex, transmit at least one in the schedule information of described downlink service data or described ascending resource in can the descending pilot frequency time slot in special subframe, the uplink pilot time slot in special subframe transmits the uplink business data of machine class communication.。
In the step S210 of Fig. 2, utilize the physical layer descending control channel to transmit the downlink service data of machine class communication.This step S210 has described the downlink service data that transmits the communication of machine class from the base station to subscriber equipment.Here provide two kinds of concrete by way of example, comprising: first kind of mode that transmits downlink service data, transmit the downlink service data of described machine class communication in the physical layer descending control channel; With second kind of mode that transmits downlink service data, in the constrained of described physical layer descending control channel, transmit the control information of the downlink service data of described machine class communication, and in the specified physical layer descending data channel position of this control information, transmit the downlink service data of described machine class communication.
The mode of the downlink service data of＜the first kind of transmission machine class communication 〉
In the Long Term Evolution communication system, following scheme is adopted in the transmission of Physical Downlink Control Channel: the modulation system of only using QPSK; Single antenna or transmission diversity have been avoided feedback overhead; The decoding of use convolution coding, its complexity and processing speed are well below the employed Turbo code coding and decoding of PDSCH; And do not mix automatic repeat requests (HARQ) transmission.Therefore, physical downlink control channel PDCCH has transmission method, modulation system, the simple advantage of channel coding method, but its carrying data volume is less.Yet the communication of machine class has that the data volume that terminal will transmit usually is few, the characteristics of small data packets transmission and sparse transmission.Therefore, in the mode of the downlink service data of described first kind of transmission machine class communication, transmit the downlink service data of described machine class communication in the physical layer descending control channel, this just utilizes the carrying data volume features of smaller of PDCCH to realize the communication of machine class.
As an example of the downlink service data that in PDCCH, transmits described machine class communication, can be in the physical layer descending control channel transmit the downlink service data of described machine class communication in the descending control information format of redetermination.Downlink Control Information DCI is the content among the PDCCH.The Downlink Control Information of different-format has different effects, and for example DCI form 0 is used for the permission of up link; DCI form 1 is used for the distribution of down link; DCI form 1c is used for paging.By the search volume among the PDCCH being carried out the DCI form that blind Detecting obtains base station transmits, and and then know the information implication of each the bit representative in the DCI form.In the table 1 below, show several transmission modes, DCI form, position, search volume and transmission method.
Table 1
In table 1, two kinds of DCI forms are arranged in every kind of transmission mode.Pattern 1 and 2 is existing transmission modes, pattern N is the transmission mode of machine class communication, DCI form 1E among the pattern N is the DCI form of redetermination, can calculate its length according to bandwidth etc., concrete computational methods can adopt this area method existing or that use in the future, are not described in detail here.For example, the length of DCI form 1E is 4 control channel elements (CCE, control channel element), as long as be not equal to the length of DCI form 1A, wherein control channel Elements C CE is the least resource unit of communicating control information among the PDCCH.At form is the MTC information of placing among the DCI of 1E, thereby uses the business datum of PDCCH transmission MTC.MTC terminal (being user equipment (UE)) comes to detect the DCI that belongs to MTC user by blind Detecting from PDCCH, and obtains the business datum of MTC.Need to prove that the length of DCI form 1E only is schematically, can also adopt other length, and its search volume can also be dedicated search space or common search space and dedicated search space.
Another example as the downlink service data that in PDCCH, transmits described machine class communication, can from the base station after terminal transmits the sign on of the class communication that is used to start the machine, transmit the downlink service data of machine class communication at the appointed position place of physical layer descending control channel.
Transmit the step of the sign on of the class communication that is used for starting the machine in described base station to terminal, can use high-level signaling as described sign on or use physical layer signaling as described sign on.As the example of using high-level signaling as described sign on, can be at the existing high-level signaling that is used for the regulation transmission mode as described sign on, increase the communication of machine class this moment in this high-level signaling transmission mode gets final product.Alternatively, can use a certain scope or the position of high-level signaling agreement search volume, and with this high-level signaling as shown in sign on.In addition, use physical layer signaling to refer to the signaling used among the PDCCH as described sign on as described sign on.
The step that described appointed position place at the physical layer descending control channel transmits machine class communication data can comprise: the described machine class communication data of transmission in the agreement scope of the search volume of physical layer descending control channel or in the agreement fixed position.Particular range or the fixed position of agreement in the search volume between base station eNB and user equipment (UE), the described machine class communication data of transmission in the scope of the agreement of search volume or in the agreement fixed position then.As mentioned above, base station eNB and user equipment (UE) can use the high-level signaling of instruction to start with to arrange.For example, use the high-level signaling of 1 bit to retrain the hunting zone, when the value of this high-level signaling is 0, the search volume is constrained in the common search space, and when the value of this high-level signaling is 1, the search volume is constrained in the dedicated search space.Following table 2 shows the example of the high-level signaling constraint hunting zone of using 3 bits.The bit number and the restriction range that it should be noted that the employed high-level signaling of mentioning here only are examples, can adopt other bit number (for example 2 bits) in practice, and adopt different restriction range.In addition, the fixed position in the search volume refers to the position of the specific CCE in the search volume.
Table 2
In the mode of first kind of above-mentioned transmission downlink service data, in the physical layer descending control channel, transmit the downlink service data of described machine class communication, this has the advantage that does not need control information, and have all advantages of the communication of PDCCH, promptly avoided feedback overhead by the simple transmission method of PDCCH, simple coding and decoding mode by PDCCH has reduced complexity and processing speed, and transmits the expense of the memory that has reduced the MTC terminal and transmit complexity owing to not carrying out HARQ.
For time division duplex Long Term Evolution communication system, for example can in the descending pilot frequency time slot in the special subframe of Fig. 1 (DwPTS), transmit the downlink service data of described machine class communication.
The mode of the downlink service data of＜the second kind of transmission machine class communication 〉
Another kind of by way of example as above-mentioned step S210, the described step (S210) of utilizing the physical layer descending control channel to transmit the downlink service data of machine class communication can comprise: transmit the control information of the downlink service data of described machine class communication in the constrained of described physical layer descending control channel, and transmit the downlink service data of described machine class communication in the specified physical layer descending data channel position of this control information.As the exemplary realization in the Long Term Evolution communication system, in the constrained of PDCCH, transmit the control information of the downlink service data of described machine class communication, and in the specified PDSCH position of this control information, transmit the downlink service data of described machine class communication.User equipment (UE) (MTC terminal) is after the base station receives PDCCH, only the constrained of PDCCH is carried out the control information of blindness monitoring with the downlink service data that obtains this MTC terminal, and obtain the downlink service data of described machine class communication then from the specified PDSCH position of this control information.
The constrained of described physical layer descending control channel for example can be the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.The particular range of this search volume or fixed position for example also can indicate by the mode of arranging between base station and subscriber equipment, also can take mode existing or that take in the future to indicate, not be construed as limiting the invention about the mode that indicates of the constrained of physical layer descending control channel.
As example, can from the base station after terminal transmits the sign on of the class communication that is used to start the machine, in the appointed position of physical layer descending control channel, transmit described descending machine class control of communication information.Described base station comprises to the sign on that terminal transmits the class communication that is used to start the machine: use high-level signaling as described sign on or use physical layer signaling as described sign on.Realization about sign on can be referring to top description.
As seen, the mode of the downlink service data of this second kind of transmission machine class communication can be carried out compatibility with existing communication protocol, be fit to multiple MTC terminal type, and reduced the complexity of MTC terminal blind Detecting by communicating control information in the constrained of PDCCH, improved processing speed.
In the step S220 of Fig. 2, in this physical layer descending control channel, transmit the schedule information (S220) of ascending resource.Further, can in the constrained of described physical layer descending control channel, transmit the schedule information of ascending resource.The constrained of described physical layer descending control channel can be the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.Described constrained (for example, the particular range of this search volume or fixed position) can indicate by the mode of between base station and subscriber equipment, arranging equally, those skilled in the art can take other suitable method to determine this constrained in practice as required.
In the Long Term Evolution communication system, for example can adopt the DCI form 0 of the permission that is used for up link to transmit the schedule information of ascending resource.That is to say that the DCI of base station using form 0 is to MTC terminal notice, this MTC terminal has much free spaces at the uplink business data that where transmits the communication of machine class of physical layer Uplink Shared Channel (PUSCH), adopts which kind of transmission means etc.The MTC terminal begins to prepare the business datum that oneself sends after obtaining described schedule information, the PUSCH in corresponding subframe sends to the base station then.
For time division duplex Long Term Evolution communication system, for example can in the descending pilot frequency time slot DwPTS in the special subframe of Fig. 1, transmit the schedule information of ascending resource.
In the step S230 of Fig. 2, in the specified physical layer sub-frame of uplink of this schedule information, transmit the uplink business data (S230) of machine class communication.Transmission about the uplink business data of machine class communication, can also be by the direct agreement position that is used to transmit this uplink business data of base station and MTC terminal, for example fix on the uplink business data that transmits the communication of machine class in the up Physical Random Access Channel (PRACH, Physical Random Access Channel) approximately.For time division duplex Long Term Evolution communication system, can also fix on the uplink business data that transmits the communication of machine class among the uplink pilot time slot UpPTS in the special subframe approximately.
Realized the transmission of uplink business data and downlink service data above-mentioned the carrying out according to the embodiment of the invention in the machine class method for communicating, this method can and can satisfy the professional transmission requirements of MTC with the wide-band mobile communication system compatibility.
It is noted that being used among Fig. 2 carry out machine class method for communicating and can be applied in the Long Term Evolution communication system as previously mentioned, also can be applied in other communication system.Those skilled in the art can realize the described machine class method for communicating that is used to carry out as required in different communication systems after reading the present invention.
Fig. 3 is the block diagram that illustrates according to the equipment 300 that carries out the communication of machine class of the embodiment of the invention.This equipment 300 that carries out the communication of machine class comprises: first communication unit 310 is used to utilize the physical layer descending control channel to transmit the downlink service data of machine class communication; Second communication unit 320 is used for the schedule information at this physical layer descending control channel transmission ascending resource; And third communication unit 330, be used for transmitting the uplink business data of machine class communication at the specified physical layer sub-frame of uplink of this schedule information.
As the mode of the downlink service data of first kind of transmission machine class communication, described first communication unit 310 can transmit the downlink service data that described machine class is communicated by letter in the physical layer descending control channel, rather than as the prior art communicating control information.Problems when this has overcome existing use physical layer descending data channel transmission downlink service data are such as transmission, modulation, coded system complexity etc.
As a kind of specific implementation of first communication unit 310, described first communication unit 310 can be in the physical layer descending control channel transmits the downlink service data of described machine class communication in the descending control information format of redetermination.In the case, the terminal of machine class communication is after the signal of receiving the physical layer descending control channel, can be for example directly obtain descending control information format, and obtain the business datum of the machine class communication under this form into machine class communication definitions by blind Detecting.Need not the physical layer descending data channel is handled.
Another kind of specific implementation as first communication unit 310, described first communication unit 310 can from the base station after terminal transmits the sign on of the class communication that is used to start the machine, transmit the downlink service data of machine class communication at the appointed position place of physical layer descending control channel.As previously mentioned, described sign on can be high-level signaling or physical layer signaling, and the appointed position of described physical layer descending control channel can be the agreement scope or the agreement fixed position of the search volume of physical layer descending control channel.In the case, the terminal of machine class communication after receiving described sign on, can with the scope of the search volume of base station agreement or fixed position in search for, thereby obtain the business datum of machine class communication wherein.At this moment, need not equally the physical layer descending data channel is handled, and owing to arranged a hunting zone or searching position, thereby reduced the blind Detecting number of times of machine class communication terminal, reduced the complexity that terminal detects, improved detection efficiency.
Mode as the downlink service data of second kind of transmission machine class communication, described first communication unit 310 can transmit described descending machine class control of communication information in the constrained of described physical layer descending control channel, and transmits the downlink service data of described machine class communication in the specified physical layer descending data channel position of this control information.The constrained of described physical layer descending control channel can be the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.The particular range of this search volume or fixed position for example also can indicate by the mode of arranging between base station and subscriber equipment, also can take mode existing or that take in the future to indicate, and it indicates mode and is not construed as limiting the invention.In addition, described first communication unit 310 can from the base station after terminal transmits the sign on of the class communication that is used to start the machine, in the appointed position of physical layer descending control channel, transmit described descending machine class control of communication information.As previously mentioned, described sign on can be high-level signaling or physical layer signaling.
In the mode of the downlink service data that this second kind of transmission machine class communicated by letter, can carry out compatibility with existing communication protocol, be fit to multiple MTC terminal type, and reduced the complexity of MTC terminal processes by communicating control information in the constrained of physical layer descending control channel.
In Fig. 3, described second communication unit 320 can transmit the schedule information of ascending resource in the constrained of described physical layer descending control channel.The constrained of described physical layer descending control channel is the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.Described constrained can indicate by the mode of arranging between base station and subscriber equipment, and those skilled in the art can take other suitable method to obtain this constrained in practice as required.
In the Long Term Evolution communication system, for example can adopt the DCI form 0 of the permission that is used for up link to transmit the schedule information of described ascending resource.Adopt in the Long Term Evolution communication system under the situation of time division duplex technology, the DCI that is used for transmitting the form 0 of described schedule information for example can be arranged in the descending pilot frequency time slot DwPTS of the special subframe of Fig. 1.
Described third communication unit 330 can transmit the uplink business data of machine class communication in the specified physical layer sub-frame of uplink of this schedule information.
Transmission about the uplink business data of machine class communication, can also for example fix on the uplink business data that transmits the communication of machine class among the up Physical Random Access Channel PRACH approximately by the direct agreement position that is used to transmit this uplink business data of base station and MTC terminal.For time division duplex Long Term Evolution communication system, can also fix on the uplink business data that transmits the communication of machine class among the uplink pilot time slot UpPTS in the special subframe approximately.
Carrying out having realized the transmission of uplink business data and downlink service data in the equipment 300 of machine class communication according to the embodiment of the invention above-mentioned, it can and can satisfy the professional transmission requirements of MTC with the wide-band mobile communication system compatibility.
The those skilled in the art can be well understood to, and is the convenience described and succinct, and the concrete course of work of the equipment of foregoing description and unit can not repeat them here with reference to the corresponding process among the preceding method embodiment.
Those of ordinary skills can recognize, the unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought and exceeds scope of the present invention.
In several embodiment that the application provided, should be understood that disclosed equipment and method can realize by other mode.For example, device embodiment described above only is schematic, for example, the division of described unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of unit to realize the purpose of present embodiment scheme according to the actual needs.In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be integrated in the unit two or more unit.
If described function realizes with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (26)
1. one kind is carried out machine class method for communicating, comprising:
Utilize the physical layer descending control channel to transmit the downlink service data of machine class communication;
In this physical layer descending control channel, transmit the schedule information of ascending resource;
In the specified physical layer sub-frame of uplink of this schedule information, transmit the uplink business data of machine class communication.
2. according to the process of claim 1 wherein, the described step of utilizing the physical layer descending control channel to transmit the downlink service data of machine class communication comprises: the downlink service data that transmits described machine class communication in the physical layer descending control channel.
3. according to the method for claim 2, wherein, the described step that transmits the downlink service data of described machine class communication in the physical layer descending control channel comprises: the downlink service data that transmits described machine class communication in the physical layer descending control channel in the descending control information format of redetermination.
4. according to the method for claim 2, wherein, the described step that transmits the downlink service data of described machine class communication in the physical layer descending control channel comprises: from the base station after terminal transmits the sign on of the class communication that is used to start the machine, transmit the downlink service data of machine class communication at the appointed position place of physical layer descending control channel.
5. according to the method for claim 4, wherein, described base station comprises to the step that terminal transmits the sign on of the class communication that is used to start the machine: use high-level signaling as described sign on or use physical layer signaling as described sign on.
6. according to the method for claim 4, wherein, described appointed position place at the physical layer descending control channel step that transmits machine class communication data comprises: the described machine class communication data of transmission in the agreement scope of the search volume of physical layer descending control channel or in the agreement fixed position.
7. according to the method for claim 1, wherein, the described step of utilizing the physical layer descending control channel to transmit the downlink service data of machine class communication comprises: transmit the control information of the downlink service data of described machine class communication in the constrained of described physical layer descending control channel, and transmit the downlink service data of described machine class communication in the specified physical layer descending data channel position of this control information.
8. according to the method for claim 7, wherein, the constrained of described physical layer descending control channel is the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.
9. according to the method for claim 7, wherein, from the base station after terminal transmits the sign on of the class communication that is used to start the machine, in the appointed position of physical layer descending control channel, transmit described descending machine class control of communication information.
10. according to the method for claim 7, wherein, described base station comprises to the sign on that terminal transmits the class communication that is used to start the machine: use high-level signaling as described sign on or use physical layer signaling as described sign on.
11. according to the process of claim 1 wherein, the described schedule information that transmits ascending resource in down control channel comprises: the schedule information that transmits ascending resource in the constrained of described physical layer descending control channel.
12. according to the method for claim 11, wherein, the constrained of described physical layer descending control channel is the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.
13. method according to claim 1, wherein, described method is applicable to tdd communication systems, in the descending pilot frequency time slot in special subframe in the schedule information of described downlink service data of transmission or described ascending resource at least one, the uplink pilot time slot in special subframe transmits the uplink business data of machine class communication.
14. an equipment that carries out the communication of machine class comprises:
First communication unit is used to utilize the physical layer descending control channel to transmit the downlink service data of machine class communication;
The second communication unit is used for the schedule information at this physical layer descending control channel transmission ascending resource; And
Third communication unit is used for transmitting the uplink business data of machine class communication at the specified physical layer sub-frame of uplink of this schedule information.
15. according to the equipment of claim 14, wherein, described first communication unit transmits the downlink service data of described machine class communication in the physical layer descending control channel.
16., wherein, transmit the downlink service data of described machine class communication in the descending control information format of described first communication unit redetermination in the physical layer descending control channel according to the equipment of claim 15.
17. according to the equipment of claim 15, wherein, from the base station after terminal transmits the sign on of the class communication that is used to start the machine, described first communication unit transmits the downlink service data of machine class communication at the appointed position place of physical layer descending control channel.
18. according to the equipment of claim 17, wherein, described sign on is high-level signaling or physical layer signaling.
19. according to the equipment of claim 17, wherein, the appointed position of described physical layer descending control channel is the agreement scope or the agreement fixed position of the search volume of physical layer descending control channel.
20. equipment according to claim 14, wherein, described first communication unit transmits described descending machine class control of communication information in the constrained of described physical layer descending control channel, and transmits the downlink service data of described machine class communication in the specified physical layer descending data channel position of this control information.
21. according to the equipment of claim 20, wherein, the constrained of described physical layer descending control channel is the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.
22. method according to claim 20, wherein, from the base station after terminal transmits the sign on of the class communication that is used to start the machine, described first communication unit transmits described descending machine class control of communication information in the appointed position of physical layer descending control channel.
23. according to the equipment of claim 20, wherein, described sign on is high-level signaling or physical layer signaling.
24. according to the equipment of claim 14, wherein, described second communication unit transmits the schedule information of ascending resource in the constrained of described physical layer descending control channel.
25. according to the equipment of claim 24, wherein, the constrained of described physical layer descending control channel is the fixed position of the search volume of the particular range of search volume of physical layer descending control channel or physical layer descending control channel.
26. equipment according to claim 14, wherein, described equipment is applicable to tdd communication systems, in the descending pilot frequency time slot in special subframe in the schedule information of described downlink service data of transmission or described ascending resource at least one, the uplink pilot time slot in special subframe transmit the uplink business data of described machine class communication.
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