CN102487548A - Machine type communication system, information sending and obtaining method, base station and terminals - Google Patents
Machine type communication system, information sending and obtaining method, base station and terminals Download PDFInfo
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Abstract
The invention discloses a machine type communication system, an information sending and obtaining method in machine type communication, a base station and terminals, and is used for solving the problems of waste of resources and increase in proportion of control cost when a PDCCH (physical downlink control channel) with greater control cost is adopted for transmitting specific control information of a certain terminal in MTC (machine type communication). The system comprises the base station and the terminals, wherein the base station is used for respectively determining information for carrying uplink transmission physical resource blocks, which is distributed for a plurality of terminals against the plurality of the terminals with the same pre-distributed group mark, sending the group mark, the information of the physical resource blocks and additional information for assisting the various terminals in analyzing the information of the physical resource blocks through the PDCCH; and the terminals are used for obtaining the group mark, the information of the physical resource blocks and the additional information, which are sent from the base station, and determining the physical resource blocks which are distributed to the terminals according to additional information and the information of the physical resource blocks when the obtained group mark and the group mark which is pre-distributed to the terminals are determined to be consistent through comparison.
Description
Technical field
The present invention relates to communication technical field, relate in particular to information transmission and preparation method and base station and terminal in a kind of Machine Type communication system, the Machine Type communication.
Background technology
Machine Type communication, i.e. MTC (claiming M2M again), it is the abbreviation of Machine-Type Communication, refers between machine and the machine (or equipment and equipment) to communicate by letter.The scene sketch map of MTC is as shown in Figure 1, and communication process does not need people's participation, and communication occurs over just between machine and the machine.
At present, core net standard 3GPP 22.368 has defined 16 kinds of key characters of MTC communication, comprises that Hypomobility, time are controlled, time delay tolerance, online small data transmission property etc.Wherein, to the characteristic of MTC " online small data transmission ", can consider in Long Term Evolution (LTE, Long-Time Evolution) system, to adopt the carrier wave of bandwidth minimum (bandwidth is 1.4M) to be used as special carrier used among the MTC.Adopt the minimum carriers carry of bandwidth professional to the less MTC of bandwidth requirement; Its benefit is; MTC business and professional the influencing each other of interpersonal communication (H2H, Human to Human) can be reduced on the one hand, the resource utilization of system can also be improved on the other hand.Therefore, design special is an important research direction in the present communication technology in the carrier wave that Machine Type communication inserts.
In the prior art, the original many system design schemes of LTE system all are to the The design of communication of H2H, may have some problems when such design is applied to MTC.Such as; Physical Downlink Control Channel (PDCCH to the specific control information that is used to carry certain terminal; PhysicalDownlink Control CHannel); Its these characteristics of high-throughput data transmission that are based on H2H design, and under the transfer of data scene of high-throughput, PDCCH need spend bigger control expense in H2H.And when adopting bandwidth to be the carriers carry MTC business of 1.4M; Machine Type communication terminal (hereinafter to be referred as the MTC terminal) will adopt the fixed modulation coded system; And need not carry out power control and HARQ, so the uplink scheduling that carries among the PDCCH is given with information such as power control and all can be simplified greatly.The problem that causes like this is exactly: on the one hand; The specific control information of in MTC, adopting the PDCCH that spends bigger control expense to transmit certain terminal is the equal of to have utilized bigger stock number to accomplish the operation less to resources requirement, has come down to cause the waste of resource; And on the other hand because the professional institute of MTC data quantity transmitted is less, and if the not corresponding minimizing of control expense that spends in order to transmit less data can cause the control expense ratio in the M2M business to increase, reduced and runed this type of professional efficient.
Summary of the invention
The embodiment of the invention provides a kind of Machine Type communication system, information transmission and preparation method and base station and terminal; Transmit the specific control information at certain terminal in order to solve the PDCCH that in MTC, adopts the bigger control expense of cost that exists in the prior art, the problem that can cause the wasting of resources and control expense ratio to increase.
The embodiment of the invention adopts following technical scheme:
A kind of Machine Type communication system; Comprise base station and a plurality of terminal; Wherein, said base station is used for to a plurality of terminals that have been assigned with same group identification in advance; Confirm as the information of Physical Resource Block that is used to carry uplink of said a plurality of terminal distribution respectively, and through physical downlink control channel PDCCH send said group identification, said Physical Resource Block information, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses; Said terminal; Be used to obtain the said group identification that sends said base station, the information and the said extraneous information of said Physical Resource Block; And relatively obtaining said group identification and allocating in advance to the group identification of self when consistent; According to the information of said extraneous information and said Physical Resource Block, confirm to distribute to the Physical Resource Block at said terminal.
Method for sending information in the communication of a kind of Machine Type comprises: to a plurality of terminals that have been assigned with same group identification in advance, the base station is confirmed as the information of Physical Resource Block that is used to carry uplink of said a plurality of terminal distribution respectively; And through physical downlink control channel PDCCH send said group identification, said Physical Resource Block information, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses.
Information obtaining method in the communication of a kind of Machine Type comprises: the group identification that the terminal obtains to send through physical downlink control channel PDCCH the base station, the information of Physical Resource Block, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses; And relatively obtaining said group identification and allocating in advance to the group identification at said terminal when consistent, according to the information of said extraneous information and said Physical Resource Block, confirm to distribute to the Physical Resource Block at said terminal.
Base station in a kind of Machine Type communication comprises:
The physical resource block message is confirmed the unit, is used for to a plurality of terminals that have been assigned with same group identification in advance, confirms as the information of Physical Resource Block that is used to carry uplink of said a plurality of terminal distribution respectively; Transmitting element is used for sending the extraneous information that said group identification, physical resource block message are confirmed the information of the Physical Resource Block that the unit is confirmed, are used for the information of the auxiliary said Physical Resource Block of each terminal parses through physical downlink control channel PDCCH.
Terminal in a kind of Machine Type communication comprises:
Obtain the unit, the group identification that is used to obtain to send through physical downlink control channel PDCCH the base station, the information of Physical Resource Block, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses; Comparing unit, whether be used for relatively obtaining the group identification that the unit obtains consistent with the group identification of allocating in advance to said terminal; Physical Resource Block is confirmed the unit, and the comparative result that is used for obtaining at comparing unit is when being, the extraneous information that receives according to receiving element and the information of Physical Resource Block confirm to distribute to the Physical Resource Block at said terminal.
The beneficial effect of the embodiment of the invention is following:
The such scheme that provides through the embodiment of the invention; Through being the identical group identifications of a plurality of terminal distribution in advance; Make the base station on a PDCCH, to send the relevant information of uplink scheduling to a plurality of terminals with identical group identification; Thereby realized the scheduling mode of " one-to-many ", the specific control information meeting of in MTC, adopting the PDCCH that spends bigger control expense to transmit certain terminal that has solved the scheduling mode existence of available technology adopting " one to one " causes the problem of the wasting of resources and the increase of control expense ratio.
Description of drawings
Fig. 1 is the scene sketch map of MTC;
Fig. 2 provides a kind of concrete structure sketch map of Machine Type communication system for the embodiment of the invention;
Method for sending information idiographic flow sketch map during a kind of Machine Type that Fig. 3 provides for the embodiment of the invention is communicated by letter;
The idiographic flow sketch map of the information obtaining method during a kind of Machine Type that Fig. 4 provides for the embodiment of the invention is communicated by letter;
The concrete structure sketch map of the base station during a kind of Machine Type that Fig. 5 provides for the embodiment of the invention is communicated by letter;
The concrete structure sketch map at the terminal during a kind of Machine Type that Fig. 6 provides for the embodiment of the invention is communicated by letter;
Fig. 7 is the idiographic flow sketch map of embodiment 1;
Fig. 8 is the idiographic flow sketch map of embodiment 2.
Embodiment
In order to solve the problem that the specific control information meeting of in MTC, adopting the PDCCH that spends bigger control expense to transmit certain terminal that exists in the prior art causes the wasting of resources and control expense ratio to increase, the inventor studies the PDCCH that designs to H2H in the prior art.In the prior art, the PDCCH loaded information generally comprises one or more in the following information:
The information of sign PDCCH form; The frequency modulation identification information; Ascending resource distributes indication (adopting binary tree row coding); Downlink resource distributes indication information; Modulation coding information; Uplink power control information; HARQ relevant parameter information; The CQI configuration parameter.
According to the difference of PDCCH institute loaded information, can PDCCH be divided into 10 types.The PDCCH of any kind can add the CRC (CRC of 16 bits; Cyclic RedundancyCheck) sign indicating number; And the CRC sign indicating number of this 16 bit and the terminal unique identification RNTI of 16 bits carried out XOR, this computing purpose is that the controlled target information with this PDCCH adds wherein.Which terminal is so-called controlled target information be meant this PDCCH to, and promptly which terminal need receive this PDCCH and operate according to information wherein, and in the prior art, this controlled target information is above-mentioned RNTI.
Through above-mentioned analysis, the inventor finds, because in H2H, PDCCH need send more information to the terminal and (comprise uplink power control information; HARQ relevant parameter information etc.); Therefore; What adopt to PDCCH that H2H designed is man-to-man uplink scheduling mode, and promptly a PDCCH channel once sends the Physical Resource Block that is used for uplink (PRB, PhysicalResource Block) that this terminal is assigned with to a terminal.And in MTC, be the modulation coding mode of fixing because the MTC terminal adopts, and need not carry out power control and HARQ, therefore, the PDCCH institute loaded information among the MTC has been simplified greatly.
Consider that the PDCCH after the simplification can have unnecessary resource to come beared information; Therefore; The inventor has proposed in MTC, to utilize PDCCH to realize the uplink scheduling of one-to-many; Promptly utilize a PDCCH channel once to send specific relevant information,, also can not increase the ratio of control expense simultaneously to realize making full use of resource to a plurality of terminals.In order to reach the purpose that reduces control expense ratio, the PDCCH of embodiment of the invention design can realize the ascending resource scheduling of one-to-many, and promptly 1 PDCCH channel can be dispatched a plurality of terminals and carries out upstream data and send the PRB information of promptly indicating a plurality of users to use.For this reason, in the embodiment of the invention, can be directed against the identical group identification of a plurality of terminal distribution; Such as, can be 1 the common C-RNTI of a plurality of MTC terminal distribution under the same type service, simultaneously; A unique identify label MTC ID is all held at the MTC terminal that has been assigned with this common C-RNTI again respectively, and (this MTC ID should be n bit-binary sequence; Wherein, n is a natural number, such as can be 8 or 16 etc.).In the embodiment of the invention, when CRC sign indicating number that carries out PDCCH and RNTI XOR, use be group identification for a plurality of terminal distribution.
Below in conjunction with accompanying drawing, the scheme that the embodiment of the invention is provided is described in detail.
At first; The embodiment of the invention provides a kind of Machine Type communication system; The concrete structure sketch map of this Machine Type communication system is as shown in Figure 2, comprises base station 21 and a plurality of terminals 22, wherein; The major function of base station is; To a plurality of terminals 22 that have been assigned with same group identification in advance, being used to of confirming as respectively that a plurality of terminals 22 distribute carried out the information of the PRB of uplink, and through PDCCH send above-mentioned group identification, PRB information, be used for the extraneous information that the information of PRB is resolved at auxiliary each terminal 22.In a preferred embodiment, the mode that group identification is sent in the base station can adopt: the xor operation of carrying out the cyclic redundancy check (CRC) codes of group identification and PDCCH employing earlier generates the XOR result, and then sends this XOR result through PDCCH.In addition, group identification can be allocated in advance to the terminal by the base station, and the group identification that each terminal is assigned with just can be known in the base station like this.
And the major function at terminal 22 is; Obtain the information of group identification, extraneous information and the PRB of base station 21 transmissions; And this group identification that relatively obtains obtaining with allocate in advance to the group identification of self when consistent, according to the information of extraneous information and PRB, confirm to distribute to the PRB at terminal 22.If base station 21 is to send this group identification with XOR result's mode, then terminal 22 need obtain this group identification through the parsing to this XOR result.
The such scheme that provides through the embodiment of the invention; The relevant information of uplink scheduling can be sent to a plurality of terminals with identical group identification in the base station on a PDCCH; Thereby realized the scheduling mode of " one-to-many ", solved the problem that the specific control information meeting of in MTC, adopting the PDCCH that spends bigger control expense to transmit certain terminal that exists in the prior art causes the wasting of resources and control expense ratio to increase.
In embodiments of the present invention; The information of PRB can be set to the extraneous information at terminal one to one mode send; So that the terminal can be confirmed the information of corresponding with it PRB according to the extraneous information of self, this mode requires the extraneous information at terminal different.In addition, the information of PRB can be set to be used to indicate corresponding PRB whether to distribute to the resource allocation identification that use at the terminal, and this resource allocation identification can adopt different modes to send to the terminal.Such as; Can adopt the mode of binary tree; Resource allocation identification is carried on behind each node of binary tree through sending among the PDCCH; Also can resource allocation identification be carried in the corresponding bit of bit map, send through PDCCH according to each bit in the predetermined bit map and the corresponding relation of PRB.Owing to adopt the mode of bit map bearing resource allocation identification more more flexible, so preferred bit map is come the bearing resource allocation identification in the embodiment of the invention than the mode that adopts binary tree to carry.
Preamble is mentioned, and the PRB at terminal can according to the information of extraneous information and PRB, be confirmed to distribute to according to predetermined information analysis mode in the terminal, and wherein, the information analysis mode here can have multiple.Below dual mode commonly used is described.
First kind of mode, it is applicable to the situation that extraneous information is mutually the same.At first, the extraneous information that send according to the base station at the terminal can be confirmed the value of extraneous information and the difference of the terminal iidentification of self (terminal iidentification can be a unique identification of being given the terminal in advance by base station assigns, and the terminal iidentification of different terminals is different); Then, according to the difference of confirming, according to the corresponding relation of each bit in the preset bit map with different differences, the terminal just can be confirmed and the corresponding bit of determining of this difference; At last; According to the resource allocation identification of confirming that bit carried, judge whether the terminal is assigned with PRB, and in judged result when being; In each bit from predetermined bit map and the corresponding relation of PRB; Choose the PRB that the pairing PRB of definite bit is assigned with as the terminal, and in judged result for not the time, confirm that the terminal is not assigned with PRB.
The second way, it is applicable to the mutually different situation of extraneous information at the terminal that has been assigned with PRB, particularly, this moment, employed extraneous information can be for allocating the mutually different identify label to each terminal in advance.At first, whether comprise the identify label of self in the identify label that send the terminal judges base station; Then; In judged result when being; Arrangement sequence number in the value of the identify label of arranging according to predefined procedure of sending in the base station according to the value of identify label of self is used for carrying the bit that the corresponding Physical Resource Block of indication is assigned to the resource allocation identification that uses at the terminal, the bit of confirming to have this arrangement sequence number from bit map; And in the corresponding relation of each bit from predetermined bit map and PRB; Choose the PRB that the pairing PRB of definite bit is assigned with as the terminal, for not the time, confirm that the terminal is not assigned with PRB in judged result.
Corresponding to the said system that the embodiment of the invention provides, the embodiment of the invention also provides the method for sending information in a kind of Machine Type communication, and the idiographic flow sketch map of this method is as shown in Figure 3, may further comprise the steps:
In a preferred embodiment, the base station through PDCCH send group identification specifically can for: at first, the xor operation generation XOR result of the cyclic redundancy check (CRC) codes that group identification and PDCCH adopt is carried out in the base station; Then, this XOR result is sent through this PDCCH in the base station.
Corresponding to the said system that the embodiment of the invention provides, the embodiment of the invention also provides the information obtaining method in a kind of Machine Type communication, and the idiographic flow sketch map of this method is as shown in Figure 4, may further comprise the steps:
The group identification that step 41, terminal obtain to send through physical downlink control channel PDCCH the base station, the information of Physical Resource Block, be used for the extraneous information of the information of auxiliary each terminal parses Physical Resource Block;
In embodiments of the present invention; The information of Physical Resource Block can show whether corresponding Physical Resource Block distributes to the resource allocation identification that use at the terminal for being used in reference to; And the base station can be according to each bit in the predetermined bit map and the corresponding relation of Physical Resource Block, sends to the terminal after will being carried in the corresponding bit of bit map corresponding to the resource allocation identification of each Physical Resource Block.
In a preferred embodiment, the extraneous information that is used for the information of auxiliary each terminal parses Physical Resource Block can be mutually the same.When extraneous information was mutually the same, the terminal was according to the information of extraneous information and Physical Resource Block, and the process of confirming to distribute to the Physical Resource Block at this terminal specifically can comprise:
At first, the difference of value of value and the terminal iidentification of self of extraneous information is confirmed at the terminal;
Then, the terminal, is confirmed and the corresponding bit of confirming of difference according to the corresponding relation of each bit in the preset bit map with different differences according to the difference of confirming;
At last; The terminal judges according to the resource allocation identification of confirming that bit carried whether self is assigned with Physical Resource Block, and in judged result when being; In each bit from predetermined bit map and the corresponding relation of Physical Resource Block; Choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as the terminal, for not the time, confirm that the terminal is not assigned with Physical Resource Block in judged result.
In another preferred embodiment, the extraneous information that is used for the information of auxiliary each terminal parses Physical Resource Block can be different, such as, the extraneous information of this moment can be the identify label at terminal.When the physical resource block message that is used for auxiliary each terminal was mutually different identify label, the terminal was according to the information of extraneous information and Physical Resource Block, and the process of confirming to distribute to the Physical Resource Block at terminal specifically can comprise:
At first, whether comprise the identify label of self in the identify label that send the terminal judges base station;
Then; In judged result when being; Arrangement sequence number in the value of the identify label of arranging according to predefined procedure that send in the base station according to the value of the identify label of self at the terminal is used for carrying the bit that the corresponding Physical Resource Block of indication is assigned to the resource allocation identification that uses at the terminal, the bit of confirming to have said arrangement sequence number from the above-mentioned bit map that send the base station; And in the corresponding relation of each bit from predetermined bit map and Physical Resource Block; Choose the pairing Physical Resource Block of definite bit as the Physical Resource Block that is assigned with, for not the time, confirm that the terminal is not assigned with Physical Resource Block in judged result.
Method for sending information in a kind of Machine Type communication that provides corresponding to the embodiment of the invention, the embodiment of the invention also provides the base station in a kind of Machine Type communication, and the concrete structure sketch map of this base station is as shown in Figure 5, comprises following functional unit:
The physical resource block message is confirmed unit 51, is used for to a plurality of terminals that have been assigned with same group identification in advance, confirms as the information of Physical Resource Block that is used to carry uplink of a plurality of terminal distribution respectively;
Transmitting element 52 is used for sending the extraneous information that group identification, physical resource block message are confirmed the information of the Physical Resource Block that unit 51 is confirmed, are used for the information of auxiliary each terminal parses Physical Resource Block through physical downlink control channel PDCCH.Preferably, the xor operation that transmitting element tool 52 specifically can be used to carry out the cyclic redundancy check (CRC) codes that group identification and PDCCH adopt generates the XOR result, and sends this XOR result through PDCCH.
Message receiving method in a kind of Machine Type communication that provides corresponding to the embodiment of the invention, the embodiment of the invention also provides the terminal in a kind of Machine Type communication, and the concrete structure sketch map at this terminal is as shown in Figure 6, comprises following functional unit:
Obtain unit 61, the group identification that is used to obtain to send through PDCCH the base station, the information of Physical Resource Block, be used for the extraneous information of the information of auxiliary each terminal parses Physical Resource Block;
Comparing unit 62, whether be used for relatively obtaining the group identification that unit 61 obtains consistent with the group identification of allocating in advance to this terminal;
Physical Resource Block is confirmed unit 63, and the comparative result that is used for obtaining at comparing unit 62 is when being, the extraneous information that receives according to receiving element and the information of Physical Resource Block confirm to distribute to the Physical Resource Block at this terminal.
In embodiments of the present invention; The information of Physical Resource Block can show whether corresponding Physical Resource Block distributes to the resource allocation identification that use at the terminal for being used in reference to; And; The physical resource block message can be by the base station according to each bit in the predetermined bit map and the corresponding relation of Physical Resource Block, will be carried on back transmission in the corresponding bit of bit map corresponding to the resource allocation identification of each Physical Resource Block.
In a preferred embodiment, when the extraneous information of the information that is used for the auxiliary said Physical Resource Block of each terminal parses was mutually the same, Physical Resource Block confirmed that unit 63 specifically can comprise the following function module:
The difference determination module is used for confirming the difference of value of the terminal iidentification at extraneous information and terminal;
The bit determination module is used for the difference definite according to the difference determination module, according to the corresponding relation of each bit in the preset bit map with different differences, confirms the bit corresponding with this difference;
Judge module is used for the resource allocation identification that bit carried definite according to the bit determination module, judges whether the terminal has been assigned with Physical Resource Block;
Physical Resource Block determination module, the judged result that is used for obtaining at judge module when being, each bit from predetermined bit map and the corresponding pass of Physical Resource Block
In the system, choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as the terminal, and the judged result that obtains at judge module confirms that the terminal is not assigned with Physical Resource Block for not the time.
In another preferred embodiment, the extraneous information that is used for the information of auxiliary each terminal parses Physical Resource Block can be different, such as, extraneous information can be the identify label at terminal.At this moment, Physical Resource Block confirms that the unit can comprise the following function module:
Judge module is used for judging whether the identify label of sending the base station comprises the identify label at terminal;
The bit determination module; The judged result that is used for obtaining at judge module is when being; Arrangement sequence number in the value of the identify label of arranging of sending in the base station according to the value of the identify label at terminal according to predefined procedure; From bit map, be used for carrying the bit that the corresponding Physical Resource Block of indication is assigned to the resource allocation identification that uses at the terminal, the bit of confirming to have this arrangement sequence number;
First determination module is used for from the corresponding relation of each bit of predetermined bit map and Physical Resource Block, choosing the Physical Resource Block that the definite pairing Physical Resource Block of bit of bit determination module is assigned with as the terminal;
Second determination module, the judged result that is used for obtaining at judge module confirm that the terminal is not assigned with Physical Resource Block for not the time.
Below in reality two of the such scheme that provides with the embodiment of the invention have particular application as example, specify the concrete application flow of such scheme.
Embodiment 1:
A kind of application flow sketch map of such scheme in practical application is as shown in Figure 7, comprises the steps:
Step 71, to a plurality of terminals that have been assigned with same 16 group identification C-RNTI in advance, the group identification at those terminals is confirmed in the base station;
Step 72, base station utilize this C-RNTI of 16 and 16 s' CRC sign indicating number to carry out XOR, obtain the XOR result.
Step 73, base station confirm respectively that each terminal is assigned with is used to carry out the resource allocation identification of the PRB of uplink.
Step 74, base station are carried out the operation that generates bit map according to the resource allocation identification of the PRB at each terminal.Each bit in the bit map is used to carry a resource allocation identification; Particularly; When a PRB is assigned to a certain terminal; According to bit in the predetermined bit map and the corresponding relation of PRB, can the resource allocation identification that bit carried corresponding with this PRB be made as 1.LTE carrier wave with the 1.4M bandwidth is an example, supposes that it adopts 6 bit map, and then 6 bits are represented 6 PRB above the carrier wave of 1.4M respectively.6 PRB can be according to first of corresponding successively 6 bit map of its frequency order from high to low to the 6th bit.When 3 the highest PRB of shared frequency are assigned to 3 corresponding terminals when using, bit map should be set to 111000 (resource allocation identification be 0 represent corresponding resource blocks not to be assigned to the terminal use).
Step 75, the base station is sent bit map, XOR result and is the unified identify label MTC ID (being above-mentioned extraneous information) of terminal distribution in advance to the terminal through PDCCH.
Step 76, the value of the terminal iidentification MTC ID that self is held in the C-RNTI terminal consistent with the C-RNTI of self that the XOR result that the XOR result resolves and send definite base station is comprised and the MTC ID of base station transmission is subtracted each other, and obtains difference k.
Step 77, terminal read k+w (w the is an integer) resource allocation identification that individual bit carried of bit map, and judge that this is designated 1 or be 0, are designated in judged result at 1 o'clock for this, execution in step 78, otherwise, execution in step 79.
Step 78 in the corresponding relation of terminal each bit from predetermined bit map and Physical Resource Block, is chosen the Physical Resource Block that is assigned with as self with the individual bit corresponding physical Resource Block of k+w (w is an integer), the flow process end.
Step 79, terminal confirm that self is not assigned with Physical Resource Block, and flow process finishes.
Embodiment 2:
A kind of application flow sketch map of such scheme in practical application is as shown in Figure 8, comprises the steps:
Arrangement sequence number in the value of the MTC ID that arranges according to predefined procedure that step 87, terminal are sent in the base station according to the value of the MTC ID of self confirms to carry in the bit map bit that has this arrangement sequence number in the bit of " 1 ".Such as, when bit map is 0001110011001, and coming the 3rd in the value of each MTC ID that the value of the MTC ID at terminal is sent in the base station, that bit that carries in the bit map the 3rd 1 is chosen at this terminal so.Further, in the corresponding relation of terminal each bit from predetermined bit map and Physical Resource Block, the Physical Resource Block that the pairing Physical Resource Block of confirming to choose of this bit is assigned with as the terminal, flow process end.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. a Machine Type communication system comprises base station and a plurality of terminal, it is characterized in that:
Said base station; Be used for to a plurality of terminals that have been assigned with same group identification in advance; Confirm as the information of Physical Resource Block that is used to carry uplink of said a plurality of terminal distribution respectively, and through physical downlink control channel PDCCH send said group identification, said Physical Resource Block information, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses;
Said terminal; Be used to obtain the said group identification that sends said base station, the information and the said extraneous information of said Physical Resource Block; And relatively obtaining said group identification and allocating in advance to the group identification of self when consistent; According to the information of said extraneous information and said Physical Resource Block, confirm to distribute to the Physical Resource Block at said terminal.
2. the system of claim 1 is characterized in that, said base station is sent said group identification through said PDCCH and is specially:
The xor operation that the cyclic redundancy check (CRC) codes of said group identification and said PDCCH employing is carried out in said base station generates the XOR result, and sends said XOR result through said PDCCH; And
Said terminal obtains said group identification and is specially: said terminal is resolved said XOR result and is obtained said group identification.
3. according to claim 1 or claim 2 system is characterized in that, the information of said Physical Resource Block is to be used to indicate corresponding Physical Resource Block whether to distribute to the resource allocation identification that use at the terminal, and
Said base station specifically is used for will being carried on corresponding to the resource allocation identification of each Physical Resource Block in the corresponding bit of bit map according to each bit of predetermined bit map and the corresponding relation of Physical Resource Block, sends through PDCCH.
4. system as claimed in claim 3 is characterized in that, the extraneous information of information that is used for the auxiliary said Physical Resource Block of each terminal parses is mutually the same, and
The Physical Resource Block at said terminal is confirmed to distribute to according to the information of said extraneous information and said Physical Resource Block in said terminal, is specially:
The difference of value of value and the terminal iidentification of self of said extraneous information is confirmed at said terminal; And
According to the difference of confirming,, confirm and said definite corresponding bit of difference according to the corresponding relation of each bit in the preset bit map with different differences; And
According to the resource allocation identification of confirming that bit carried; Judge whether said terminal is assigned with Physical Resource Block; And in judged result when being, from said corresponding relation, choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as said terminal; For not the time, confirm that said terminal is not assigned with Physical Resource Block in judged result.
5. system as claimed in claim 3 is characterized in that, the extraneous information of information that is used for the auxiliary said Physical Resource Block of each terminal parses is different, and said extraneous information is the identify label at terminal, and
The Physical Resource Block at said terminal is confirmed to distribute to according to the information of said extraneous information and said Physical Resource Block in said terminal, is specially:
Whether comprise the identify label of self in the identify label that send said terminal judges base station; And
In judged result when being; Arrangement sequence number in the value of the identify label of arranging of sending in the base station according to the value of identify label of self according to predefined procedure; From said bit map, be used for carrying the bit that the corresponding Physical Resource Block of indication is assigned to the resource allocation identification that uses at the terminal; Confirm to have the bit of said arrangement sequence number, and from said corresponding relation, choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as said terminal; For not the time, confirm that said terminal is not assigned with Physical Resource Block in judged result.
6. the method for sending information during a Machine Type is communicated by letter is characterized in that, comprising:
To a plurality of terminals that have been assigned with same group identification in advance, the base station is confirmed as the information of Physical Resource Block that is used to carry uplink of said a plurality of terminal distribution respectively; And
Through physical downlink control channel PDCCH send said group identification, said Physical Resource Block information, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses.
7. method as claimed in claim 6 is characterized in that, said base station is sent said group identification through said PDCCH and specifically comprised:
The xor operation that the cyclic redundancy check (CRC) codes of said group identification and said PDCCH employing is carried out in said base station generates the XOR result; And
Send said XOR result through this PDCCH.
8. like claim 6 or 7 described methods, it is characterized in that the information of said Physical Resource Block is to be used to indicate corresponding Physical Resource Block whether to distribute to the resource allocation identification that use at the terminal; And
Said base station is specially through the information that PDCCH sends said Physical Resource Block:
According to each bit in the predetermined bit map and the corresponding relation of Physical Resource Block, will be carried on corresponding to the resource allocation identification of each Physical Resource Block in the corresponding bit of bit map, send through PDCCH.
9. the information obtaining method during a Machine Type is communicated by letter is characterized in that, comprising:
The group identification that the terminal obtains to send through physical downlink control channel PDCCH the base station, the information of Physical Resource Block, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses; And
Relatively obtaining said group identification and allocating in advance to the group identification at said terminal when consistent,, confirming to distribute to the Physical Resource Block at said terminal according to the information of said extraneous information and said Physical Resource Block.
10. method as claimed in claim 9 is characterized in that, the information of said Physical Resource Block is to be used to indicate corresponding Physical Resource Block whether to distribute to the resource allocation identification that use at the terminal; And
Said physical resource block message is said base station according to each bit in the predetermined bit map and the corresponding relation of Physical Resource Block, will be carried on back transmission in the corresponding bit of bit map corresponding to the resource allocation identification of each Physical Resource Block.
11. method as claimed in claim 10 is characterized in that, the extraneous information of information that is used for the auxiliary said Physical Resource Block of each terminal parses is mutually the same; And
The Physical Resource Block at said terminal is confirmed to distribute to according to the information of said extraneous information and said Physical Resource Block in said terminal, specifically comprises:
The difference of value of value and the terminal iidentification of self of said extraneous information is confirmed at said terminal; And
According to the difference of confirming,, confirm and said definite corresponding bit of difference according to the corresponding relation of each bit in the preset bit map with different differences; And
According to the resource allocation identification of confirming that bit carried; Judge whether said terminal is assigned with Physical Resource Block; And in judged result when being, from said corresponding relation, choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as said terminal; For not the time, confirm that said terminal is not assigned with Physical Resource Block in judged result.
12. method as claimed in claim 10 is characterized in that, the extraneous information of information that is used for the auxiliary said Physical Resource Block of each terminal parses is different, and said extraneous information is the identify label at terminal, and
The Physical Resource Block at said terminal is confirmed to distribute to according to the information of said extraneous information and said Physical Resource Block in said terminal, specifically comprises:
Whether comprise the identify label of self in the identify label that send said terminal judges base station; And
In judged result when being; Arrangement sequence number in the value of the identify label of arranging of sending in the base station according to the value of identify label of self according to predefined procedure; From said bit map, be used for carrying the bit that the corresponding Physical Resource Block of indication is assigned to the resource allocation identification that uses at the terminal; Confirm to have the bit of said arrangement sequence number, and from said corresponding relation, choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as said terminal; For not the time, confirm that said terminal is not assigned with Physical Resource Block in judged result.
13. the base station during a Machine Type is communicated by letter is characterized in that, comprising:
The physical resource block message is confirmed the unit, is used for to a plurality of terminals that have been assigned with same group identification in advance, confirms as the information of Physical Resource Block that is used to carry uplink of said a plurality of terminal distribution respectively;
Transmitting element is used for sending the extraneous information that said group identification, physical resource block message are confirmed the information of the Physical Resource Block that the unit is confirmed, are used for the information of the auxiliary said Physical Resource Block of each terminal parses through physical downlink control channel PDCCH.
14. base station as claimed in claim 13; It is characterized in that; The xor operation that said transmitting element specifically is used to carry out the cyclic redundancy check (CRC) codes that said group identification and said PDCCH adopt generates the XOR result, and sends said XOR result through said PDCCH.
15. the terminal during a Machine Type is communicated by letter is characterized in that, comprising:
Obtain the unit, the group identification that is used to obtain to send through physical downlink control channel PDCCH the base station, the information of Physical Resource Block, be used for the extraneous information of the information of the auxiliary said Physical Resource Block of each terminal parses;
Comparing unit, whether be used for relatively obtaining the group identification that the unit obtains consistent with the group identification of allocating in advance to said terminal;
Physical Resource Block is confirmed the unit, and the comparative result that is used for obtaining at comparing unit is when being, the extraneous information that receives according to receiving element and the information of Physical Resource Block confirm to distribute to the Physical Resource Block at said terminal.
16. terminal as claimed in claim 15 is characterized in that, the information of said Physical Resource Block is to be used to indicate corresponding Physical Resource Block whether to distribute to the resource allocation identification that use at the terminal; And
Said physical resource block message is said base station according to each bit in the predetermined bit map and the corresponding relation of Physical Resource Block, will be carried on back transmission in the corresponding bit of bit map corresponding to the resource allocation identification of each Physical Resource Block.
17. terminal as claimed in claim 16 is characterized in that, the extraneous information of information that is used for the auxiliary said Physical Resource Block of each terminal parses is mutually the same; And said Physical Resource Block confirms that the unit specifically comprises:
The difference determination module is used for confirming the difference of value of the terminal iidentification at said extraneous information and said terminal;
The bit determination module is used for the difference definite according to the difference determination module, according to the corresponding relation of each bit in the preset bit map with different differences, confirms and said definite corresponding bit of difference;
Judge module is used for the resource allocation identification that bit carried definite according to the bit determination module, judges whether said terminal is assigned with Physical Resource Block;
The Physical Resource Block determination module; The judged result that is used for obtaining at judge module is when being; From said corresponding relation; Choose the Physical Resource Block that the pairing Physical Resource Block of definite bit is assigned with as said terminal, and the judged result that obtains at judge module confirms that said terminal is not assigned with Physical Resource Block for not the time.
18. terminal as claimed in claim 16; It is characterized in that; The extraneous information of information that is used for the auxiliary said Physical Resource Block of each terminal parses is different, and said extraneous information is the identify label at terminal, and said Physical Resource Block confirms that the unit specifically comprises:
Judge module is used for judging whether the identify label of sending said base station comprises the identify label at said terminal; And
The bit determination module; The judged result that is used for obtaining at judge module is when being; Arrangement sequence number in the value of the identify label of arranging of sending in the base station according to the value of the identify label at said terminal according to predefined procedure; From said bit map, be used for carrying the bit that the corresponding Physical Resource Block of indication is assigned to the resource allocation identification that uses at the terminal, the bit of confirming to have said arrangement sequence number;
First determination module is used for from said corresponding relation, chooses the Physical Resource Block that the definite pairing Physical Resource Block of bit of bit determination module is assigned with as said terminal;
Second determination module, the judged result that is used for obtaining at judge module confirm that said terminal is not assigned with Physical Resource Block for not the time.
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