CN103024906A - Communication method, terminal, base station and system - Google Patents
Communication method, terminal, base station and system Download PDFInfo
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- CN103024906A CN103024906A CN2011102792232A CN201110279223A CN103024906A CN 103024906 A CN103024906 A CN 103024906A CN 2011102792232 A CN2011102792232 A CN 2011102792232A CN 201110279223 A CN201110279223 A CN 201110279223A CN 103024906 A CN103024906 A CN 103024906A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a communication method, terminal, base station and system, wherein the method comprises the steps that: the base station issues CSR position information shared by a plurality of terminals to the terminals, and receives uplink dispatch requests reported by the terminals at the CSR position. According to the communication method, terminal, base station and system, the uplink communication of a new LTE (Long-Term Evolution) system is relatively suitable for applications of a warning MTC (Machine-Type Communication) through a plurality of CSRs shared by the MTC terminals, and the LTC base station can allocate long-period SR (Scheduling Request) of each MTC terminal, thereby being applicable to the characteristic that the uplink communication of the MTC terminal is sparse, and saving air interface resources.
Description
Technical field
The present invention relates to the MTC communication technology in the communications field, particularly, relate to communication means, terminal, base station and system.
Background technology
MTC (machine-type communication, machine type communication) refers between machine and the machine (equipment and equipment) and a kind of communication mode that does not need the people to participate in.Just in the 3GPP standard, just beginning at present the discussion of the study item that is correlated with, studying the optimization that whether is necessary the type communication is carried out network facet, when particularly following magnanimity equipment is applied in the real network, whether can impact Human to Human (interpersonal communication).Consider simultaneously the application prospect of following MTC communication, how to guarantee that the performance of MTC communication is an important research direction.
Core net standard 22.368 has defined 16 kinds of important feature (characteristics) in the MTC communication at present, comprise low mobile model, time control type, time delay tolerance type, online small data transmission type etc., for different application, comprise metering (checking meter), Long-distance Control etc., the combination that may have characteristics or several characteristics, existing agreement is not efficient when supporting MTC communication.
As shown in Figure 1, the longitudinal axis among Fig. 1 represents the frequency domain bandwidth of channel, and transverse axis represents the time-domain resource that channel is shared.The SR of different time-frequencies position (scheduling request) is for different user among Fig. 1.If the machine type communication terminal needs to send upstream data to evolved base station, then must at first on SR, send dispatch request to evolved base station, only have after evolved base station is received the dispatch request of machine type communication terminal, just might indicate machine type communication terminal particular location of tcp data segment in Fig. 1 to send upstream data by down control channel.And the machine type communication terminal is informed the machine type communication terminal by evolved base station by high-level signaling when the SR of what time-frequency position sends dispatch request.
The flow process of whole uplink communication is:
1) the machine type communication terminal enters the RRC connection status by accessing at random;
2) the machine type communication terminal receives the PUCCH configuration-direct that evolved base station is sent, and this order comprises some parameters, can determine to send time-frequency position and the repetition period of uplink scheduling request SR by these parameter machine type communication terminals;
3) if need to send upstream data, the machine type communication terminal sends dispatch request to evolved base station on the SR that is its distribution;
4) after evolved base station is received dispatch request, will be machine type communication terminal distribution transmitting uplink data resource by down control channel;
5) the machine type communication terminal is carried out uplink according to the transmitting uplink data resource of distributing, if the machine type communication terminal does not receive that the data transmission resources that evolved base station is sent distributes indication, then needs to wait for the appearance of next SR send opportunity and resends dispatch request after sending SR.
MTC for some alarm class uses (for example fire-alarm, alarm for tidal wave), and its uplink communication has following demand:
(1) in a single day alert occuring, then needs the machine type communication terminal fast warning message to be transferred to evolved base station;
When (2) occuring without alert, the required power consumption of reduce machine type communication terminal communication is to reach the purpose of economize on electricity.
If adopt existing uplink communication mechanism, in order to guarantee that the machine type communication terminal can send rapidly upstream data, then be necessary for the more SR chance of machine type communication terminal distribution, the cycle that is machine type communication terminal distribution SR chance is lacked (several milliseconds or tens milliseconds).But, because the machine type communication terminal considers that from economize on electricity often be in resting state, the SR that namely distributes has been wasted.If consider the saving of interface-free resources, configuration is set long (tens or dozens of minutes) to the cycle of machine type communication terminal SR chance, then can't satisfy the demand that the machine type communication terminal sends upstream data at any time fast.Therefore, prior art is applied to alarm class MTC and uses, and perhaps can cause the waste of interface-free resources or cause the time delay of machine type communication terminal transmission upstream data larger.
In the prior art, the machine type communication terminal only sends SR in specific time-frequency position, if miss once, need to wait for that the time-frequency position just can send SR next time, and for alarm class MTC uses, in case report to the police, then need the machine type communication terminal to send rapidly up warning message to evolved base station.
Summary of the invention
The objective of the invention is to propose a kind of communication means, terminal, base station and system for the untimely defective of the data upload of machine type communication in the prior art.
For achieving the above object, according to an aspect of the present invention, provide a kind of communication means.
Communication means according to the embodiment of the invention comprises: the base station issues to terminal can be for the shared CSR positional information of a plurality of terminals, and receiving terminal is at the uplink scheduling request of CSR reporting position.
After the step of the uplink scheduling request of receiving terminal, comprise: the base station according to uplink scheduling request identification send the terminal of uplink scheduling request, and be the terminal distribution uplink transmission resource.
The step that identification of base stations is sent the uplink scheduling request terminal specifically comprises: the terminal of uplink scheduling request is sent in the terminal iidentification identification that carry according to uplink scheduling request the base station.
In technique scheme, also comprise: the base station issues to terminal can be for the SR positional information of single terminal-specific.
In technique scheme, the repetition period of SR is longer than the repetition period of CSR.
For achieving the above object, according to an aspect of the present invention, provide a kind of communication means.
Communication means according to the embodiment of the invention comprises: terminal receives the CSR positional information that supplies a plurality of terminals to share that the base station issues, and sends uplink scheduling request in the CSR position to the base station.
Comprise after the step that sends uplink scheduling request to the base station: terminal receives the base station according to the uplink transmission resource that uplink scheduling request distributes, and utilizes uplink transmission resource to carry out the transmission of upstream data.
In technique scheme, further comprise: terminal receives the SR positional information for single terminal-specific that the base station issues.
In technique scheme, specifically comprise:
When needs sent upstream data, terminal was determined the nearest subframe of carrying SR position and CSR position; If the subframe of carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, terminal is chosen on this SR position of carrying SR position subframe and sends uplink scheduling request to the base station; If carry the subframe of SR position after the subframe of carrying the CSR position, terminal is chosen on this CSR position of carrying CSR position subframe to base station transmission uplink scheduling request.
In technique scheme, also comprise: terminal after sending uplink scheduling request to the base station, if do not receive the indication information of the distribution uplink transmission resource that the base station issues, then in the SR position or the CSR position again send uplink scheduling request to the base station.
For achieving the above object, according to another aspect of the present invention, provide a kind of communication terminal.
Communication terminal according to the embodiment of the invention comprises:
Information receiving module is used for receiving the CSR positional information that supplies a plurality of terminals to share that the base station issues;
The first request sending module is used for sending uplink scheduling request in the CSR position to the base station.
In technique scheme, terminal also comprises:
The resource receiver module is used for receiving the uplink transmission resource that the base station is distributed according to uplink scheduling request;
Data transmission module is used for utilizing uplink transmission resource to carry out the transmission of upstream data.
In technique scheme, information receiving module also is used for receiving the SR positional information for single terminal-specific that the base station issues.
In technique scheme, terminal specifically comprises:
The subframe determination module is used for determining the nearest subframe of carrying SR position and CSR position when needs send upstream data;
The second request sending module, if the subframe that is used for carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, be chosen on this SR position of carrying SR position subframe and send uplink scheduling request to described base station.
In technique scheme, the second request sending module is if the subframe that also is used for carrying the SR position after the subframe of carrying the CSR position, is chosen on this CSR position of carrying CSR position subframe to base station transmission uplink scheduling request.
In technique scheme, terminal also comprises:
The indication information judge module is used for after sending uplink scheduling request to the base station, the indication information of the distribution uplink transmission resource that judges whether to receive that the base station issues;
The second request sending module, if also be used for not receiving the indication information of the distribution uplink transmission resource that the base station issues, then in the SR position or the CSR position again send uplink scheduling request to the base station.
For achieving the above object, according to another aspect of the present invention, provide a kind of communication base station.
Communication base station according to the embodiment of the invention comprises:
Information issues module, and being used for issuing to terminal can be for the shared CSR positional information of a plurality of terminals;
The request receiving module is used for receiving terminal at the uplink scheduling request of CSR reporting position.
In technique scheme, the base station also comprises:
TIM terminal identification module is used for identifying the terminal of sending uplink scheduling request according to uplink scheduling request;
Resource distribution module is used to the terminal distribution uplink transmission resource that identifies.
In technique scheme, TIM terminal identification module, the terminal of uplink scheduling request is sent in the terminal iidentification identification that is used for carrying according to uplink scheduling request.
In technique scheme, information issues module, and also being used for issuing to terminal can be for the SR positional information of single terminal-specific.
For achieving the above object, according to another aspect of the present invention, provide a kind of communication system.
Communication system according to the embodiment of the invention comprises:
The base station, being used for issuing to terminal can be for the shared CSR positional information of a plurality of terminals, and receiving terminal is at the uplink scheduling request of CSR reporting position;
Terminal is used for receiving the CSR positional information that supplies a plurality of terminals to share that the base station issues, and sends uplink scheduling request in the CSR position to the base station.
In technique scheme, the base station, the terminal of uplink scheduling request is sent in the terminal iidentification identification that also is used for carrying according to uplink scheduling request, and is the terminal distribution uplink transmission resource;
Terminal also is used for receiving the base station according to the uplink transmission resource that uplink scheduling request distributes, and utilizes uplink transmission resource to carry out the transmission of upstream data.
In technique scheme, the base station, also being used for issuing to terminal can be for the SR positional information of single terminal-specific;
Terminal, also be used for receiving the SR positional information for single terminal-specific that the base station issues, when needs send upstream data, determine the nearest subframe of carrying SR position and CSR position, if the subframe of carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, be chosen on this SR position of carrying SR position subframe and send uplink scheduling request to described base station; If carry the subframe of SR position after the subframe of carrying the CSR position, be chosen on this CSR position of carrying CSR position subframe to base station transmission uplink scheduling request.
In technique scheme, terminal also is used for after sending uplink scheduling request to the base station, if do not receive the indication information of the distribution uplink transmission resource that the base station issues, then in the SR position or the CSR position again send uplink scheduling request to the base station.
The communication means of various embodiments of the present invention, terminal, base station and system, the CSR that shares by introducing a plurality of MTC terminals, the MTC that makes the uplink communication of new LTE system be more suitable for the alarm class uses: (1) at first evolved base station can dispose SR to each MTC terminal longer cycle, thereby adapt to the more sparse characteristics of MTC terminal uplink communication, saved interface-free resources; (2) then evolved base station configuration than shorter CSR of SR cycle for all MTC terminals; (3) thus, in case certain MTC terminal has warning information, then can send dispatch request to evolved base station at nearest CSR or SR, reduce the time delay of upstream data communication; And, because short CSR of cycle is that all MTC terminals are shared, so can not cause the interface-free resources waste as special-purpose SR.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation according to LTE up channel in the prior art;
Fig. 2 is the structural representation according to the LTE up channel of the embodiment of the invention;
Fig. 3 is the flow chart according to the communication means of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
The concrete structure of the LTE up channel that the present invention relates to the structure of existing LTE up channel among Fig. 1 similarly is as shown in Figure 2, and the longitudinal axis among Fig. 2 represents the frequency domain bandwidth of LTE up channel, and transverse axis represents the time-domain resource of LTE up channel.In existing LTE up channel, contain outside SR and the data transmission resources, added CSR (common scheduling request) in the LTE up channel structure of the present invention.Wherein, each CSR takies the RB (being Resource Block, being the unit of LTE system resource allocation, is 12 virtual subnet carrier waves at frequency domain, is the 0.5ms time slot in time domain) of 2 LTE up channels.Wherein, modulation system to CSR is QPSK, the MTC terminal that is under the connection status is informed by evolved base station in the position of CSR by high-rise control signal, the MTC terminal can send the C-RNTI (Cell Radio Network Temporary Identifier/Identity, Cell-RNTI is for the identity of each terminal in the distinguishing cell) of MTC terminal in the QPSK mode on CSR.
Embodiment of the method
According to the embodiment of the invention, a kind of communication means is provided, Fig. 3 is the flow chart according to the communication means of the embodiment of the invention.
As shown in Figure 3, this method embodiment specifically comprises:
Step S102:MTC terminal enters RRC (Radio Resource Control, Radio Resource control) connection status by accessing at random;
Step S104:MTC terminal receives PUCCH (the physical uplink control chanel that evolved base station is sent, Physical Uplink Control Channel) configuration-direct, this instruction comprises some parameters, can determine to send time-frequency position and the repetition period of SR by these parameters MTC terminal;
Step S106:MTC terminal receives the high-rise control signal that evolved base station is sent, such as RRC signaling or MAC CE signaling, the time-frequency position that its signaling content is CSR, repetition period and operable orthogonal code information or can determine the relevant information of time-frequency position, repetition period and use orthogonal code, this signaling is carried by the RRC control signal, can be broadcast signaling, also can be dedicated control signaling;
Step S108: if need to send upstream data, the MTC terminal is determined the nearest subframe that can send SR and CSR according to the PUCCH configuration-direct and the high-rise control command that receive;
Step S1082: if the subframe that can send SR is before the subframe that can send CSR or be in same subframe, then the MTC terminal sends uplink scheduling request to evolved base station in the SR position of this subframe, the corresponding specific MTC terminal of this uplink scheduling request;
Step S1084: if the subframe that can send SR is after the subframe that can send CSR, then the MTC terminal be chosen in send this MTC terminal on the CSR position of this subframe uplink scheduling request to evolved base station, the transmission of this uplink scheduling request realizes by the mode that sends C-RNTI, wherein, the corresponding MTC terminal of each C-RNTI, that is evolved base station can identify by C-RNTI the MTC terminal of the request of transmission after receiving this uplink scheduling request;
Step S110: if evolved base station has received the locational uplink scheduling request of SR, then according to receiving the position of SR on subframe in the uplink scheduling request, can determine to send the MTC terminal of this uplink scheduling request, and the transmission descending control signaling comes to be MTC terminal distribution uplink transmission resource; If evolved base station has received the locational C-RNTI of CSR, can determine to send according to C-RNTI the MTC terminal of this uplink scheduling request, and the transmission descending control signaling comes to be MTC terminal distribution uplink transmission resource;
Step S112:MTC terminal is carried out uplink according to the uplink transmission resource of distributing, after if the MTC terminal is sent uplink scheduling request (by SR or CSR), do not receive the distribution indication of the uplink transmission resource that evolved base station is sent, then the MTC terminal begins again to operate from step S108, that is, the MTC terminal sends uplink scheduling request in the position of SR or CSR again to evolved base station, until evolved base station issues till the distribution indication of uplink transmission resource to the MTC terminal.
In communication means of the present invention and system, there are following difference in CSR and SR:
1) SR of a time-frequency position and an orthogonal code only can be distributed to some specific MTC terminals, so evolved base station can send the time-frequency position of SR and the MTC terminal identity that orthogonal code determines to send this SR by the MTC terminal; The CSR of a time-frequency position and an orthogonal code are distributed to one group of MTC terminal, that is CSR is that a plurality of MTC terminals share, and SR is certain MTC terminal-specific;
2) uplink scheduling request that sends at SR of MTC terminal is the character string of a succession of 1 (being that character string is 1 entirely), and expression needs uplink transmission resource; That send is the C-RNTI (16 bit) of MTC terminal and CSR is upper, is used for certain MTC terminal of expression and needs uplink transmission resource.
As shown in Figure 1, in the subframe of existing LTE up channel, SR is arranged in the up and down two ends of subframe, and wherein, per two SR are one group, the distance of vacant one group of SR between every group of SR; As shown in Figure 2, in the subframe of LTE up channel of the present invention, be consistent among the arrangement position of SR and Fig. 1, and CSR is arranged in the vacant position between every group of SR.
Need to prove that existing SR arrangement mode is not limited to the mode among Fig. 1, can have vacantly between its every group of SR, also can be booked and without vacant; Corresponding therewith, the arrangement of CSR of the present invention also is not limited to the mode among Fig. 2, it can be adjusted accordingly according to the arrangement mode of SR, be that CSR can be booked the vacant position between every group of SR, can not be booked yet, even, can in the subframe of LTE up channel, only arrange as required CSR, and not arrange SR.
Communication means of the present invention provides again a kind of embodiment, select the transmission uplink scheduling request different from Fig. 3 embodiment at SR and CSR position, in the method embodiment, only there is the subframe that can send CSR, there is not the subframe that can send SR, so this method embodiment only sends uplink scheduling request in the CSR position:
Step S202:MTC terminal enters RRC (Radio Resource Control, Radio Resource control) connection status by accessing at random;
Step S204:MTC terminal receives the high-rise control signal that evolved base station is sent, such as RRC signaling or MAC CE signaling, the time-frequency position that its signaling content is CSR, repetition period and operable orthogonal code information or can determine the relevant information of time-frequency position, repetition period and use orthogonal code, this signaling is carried by the RRC control signal, can be broadcast signaling, also can be dedicated control signaling;
Step S206: if need to send upstream data, the MTC terminal is determined the nearest subframe that can send CSR according to the high-rise control command that receives;
Step S208:MTC terminal sends the uplink scheduling request of this MTC terminal to evolved base station in the CSR position of the subframe of determining, the transmission of this uplink scheduling request realizes by the mode that sends C-RNTI, wherein, the corresponding MTC terminal of each C-RNTI, that is, evolved base station can identify by C-RNTI the MTC terminal of the request of transmission after receiving this uplink scheduling request;
Step S210: evolved base station has received the locational C-RNTI of CSR, can determine to send according to C-RNTI the MTC terminal of this uplink scheduling request, and the transmission descending control signaling comes to be MTC terminal distribution uplink transmission resource;
Step S212:MTC terminal is carried out uplink according to the uplink transmission resource of distributing, after if the MTC terminal is sent uplink scheduling request (passing through CSR), do not receive the distribution indication of the uplink transmission resource that evolved base station is sent, then the MTC terminal begins again to operate from step S208, that is, the MTC terminal sends uplink scheduling request in the position of CSR again to evolved base station, until evolved base station issues till the distribution indication of uplink transmission resource to the MTC terminal.
The communication means of above-described embodiment has increased ascending control channel CSR newly, and this channel is channel shared by multiple users, takies 2 ascending resource pieces, and each CSR can send for the MTC terminal C-RNTI information of 16 bits; The time-frequency position of ascending control channel CSR and the information such as orthogonal code that take are disposed by evolved base station, and inform the MTC terminal by the rrc layer control signal.Compared with prior art, the communication means that the present invention proposes, the CSR that shares by introducing a plurality of MTC terminals, the MTC that makes the uplink communication of new LTE system be more suitable for the alarm class uses: (1) at first evolved base station can dispose SR to each MTC terminal longer cycle, thereby adapt to the more sparse characteristics of MTC terminal uplink communication, saved interface-free resources; (2) then evolved base station configuration than shorter CSR of SR cycle for all MTC terminals; (3) thus, in case certain MTC terminal has warning information, then can send dispatch request to evolved base station at nearest CSR or SR, reduce the time delay of upstream data communication; And, because short CSR of cycle is that all MTC terminals are shared, so can not cause the interface-free resources waste as special-purpose SR.
System embodiment
According to the embodiment of the invention, provide a kind of communication system.The communication system of present embodiment comprises:
The MTC terminal is used for receiving the CSR positional information that supplies a plurality of MTC terminals to share that eNB issues, and sends uplink scheduling request in the CSR position to eNB;
ENB (evolved Node B, evolved base station) is used for issuing and can for the shared CSR positional information of a plurality of MTC terminals, receiving the MTC terminal at the uplink scheduling request of CSR reporting position to the MTC terminal.
Wherein, eNB also sends the MTC terminal of uplink scheduling request for identifying according to uplink scheduling request, and is MTC terminal distribution uplink transmission resource, receives the MTC terminal according to the upstream data of the uplink transmission resource transmission that distributes;
The MTC terminal also is used for receiving eNB according to the uplink transmission resource that uplink scheduling request distributes, and utilizes uplink transmission resource to carry out the transmission of upstream data.
Wherein, eNB comprises:
Information issues module, and being used for issuing to the MTC terminal can be for the shared CSR positional information of a plurality of MTC terminals;
The request receiving module is used for receiving the MTC terminal at the uplink scheduling request of CSR reporting position.
Wherein, eNB also comprises:
TIM terminal identification module is used for identifying the MTC terminal of sending uplink scheduling request according to uplink scheduling request;
Resource distribution module is used to the MTC terminal distribution uplink transmission resource that identifies;
Data reception module is used for receiving the MTC terminal according to the upstream data of the uplink transmission resource transmission that distributes.
Wherein, TIM terminal identification module after being used for receiving uplink scheduling request, is identified the terminal of sending uplink scheduling request according to the terminal iidentification (being C-RNTI) that uplink scheduling request carries.
Wherein, information issues module, and also being used for issuing to the MTC terminal can be for the SR positional information of single MTC terminal-specific.
Wherein, the MTC terminal comprises:
Information receiving module is used for receiving the CSR positional information that supplies a plurality of MTC terminals to share that eNB issues;
The first request sending module is used for sending uplink scheduling request in the CSR position to eNB.
Wherein, the MTC terminal also comprises:
The resource receiver module is used for receiving the uplink transmission resource that eNB distributes according to uplink scheduling request;
Data transmission module is used for utilizing uplink transmission resource to carry out the transmission of upstream data.
Information receiving module also is used for receiving the SR positional information for single MTC terminal-specific that eNB issues.
The MTC terminal specifically comprises:
The subframe determination module is used for determining the nearest subframe of carrying SR position and CSR position when needs send upstream data;
The second request sending module, if the subframe that is used for carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, be chosen on this SR position of carrying SR position subframe and send uplink scheduling request to eNB.
The second request sending module is if the subframe that also is used for carrying the SR position is chosen on this CSR position of carrying CSR position subframe and sends uplink scheduling request to eNB after the subframe of carrying the CSR position.
The MTC terminal also comprises:
The indication information judge module is used for after sending uplink scheduling request to eNB, the indication information of the distribution uplink transmission resource that judges whether to receive that eNB issues;
The second request sending module, if also be used for not receiving the indication information of the distribution uplink transmission resource that eNB issues, then in the SR position or the CSR position again send uplink scheduling request to eNB.
The communication system of present embodiment has increased ascending control channel CSR newly, and this channel is channel shared by multiple users, takies 2 ascending resource pieces, and each CSR can send for the MTC terminal C-RNTI information of 16 bits; The time-frequency position of ascending control channel CSR and the information such as orthogonal code that take are disposed by evolved base station, and inform the MTC terminal by the rrc layer control signal.
Compared with prior art, the communication system that the present invention proposes, the CSR that shares by introducing a plurality of MTC terminals, the MTC that makes the uplink communication of new LTE system be more suitable for the alarm class uses: (1) at first evolved base station can dispose SR to each MTC terminal longer cycle, thereby adapt to the more sparse characteristics of MTC terminal uplink communication, saved interface-free resources; (2) then evolved base station configuration than shorter CSR of SR cycle for all MTC terminals; (3) thus, in case certain MTC terminal has warning information, then can send dispatch request to evolved base station at nearest CSR or SR, reduce the time delay of upstream data communication; And, because short CSR of cycle is that all MTC terminals are shared, so can not cause the interface-free resources waste as special-purpose SR.
Terminal embodiment
According to the embodiment of the invention, provide a kind of MTC terminal.
The MTC terminal of present embodiment comprises:
Information receiving module is used for receiving the CSR positional information that supplies a plurality of MTC terminals to share that eNB issues;
The first request sending module is used for sending uplink scheduling request in the CSR position to eNB.
Wherein, the MTC terminal also comprises:
The resource receiver module is used for receiving the uplink transmission resource that eNB distributes according to uplink scheduling request;
Data transmission module is used for utilizing uplink transmission resource to carry out the transmission of upstream data.
Described information receiving module also is used for receiving the SR positional information for single MTC terminal-specific that eNB issues.
The MTC terminal specifically comprises:
The subframe determination module is used for determining the nearest subframe of carrying SR position and CSR position when needs send upstream data;
The second request sending module, if the subframe that is used for carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, be chosen on this SR position of carrying SR position subframe and send uplink scheduling request to eNB.
The second request sending module is if the subframe that also is used for carrying the SR position is chosen on this CSR position of carrying CSR position subframe and sends uplink scheduling request to eNB after the subframe of carrying the CSR position.
The MTC terminal also comprises:
The indication information judge module is used for after sending uplink scheduling request to eNB, the indication information of the distribution uplink transmission resource that judges whether to receive that eNB issues;
The second request sending module, if also be used for not receiving the indication information of the distribution uplink transmission resource that eNB issues, then in the SR position or the CSR position again send uplink scheduling request to eNB.
In the present embodiment, increased ascending control channel CSR newly, this channel is channel shared by multiple users, takies 2 ascending resource pieces, and each CSR can send for the MTC terminal C-RNTI information of 16 bits; The time-frequency position of ascending control channel CSR and the information such as orthogonal code that take are disposed by evolved base station, and inform the MTC terminal by the rrc layer control signal.
Compared with prior art, MTC terminal of the present invention, the CSR that shares by introducing a plurality of MTC terminals, the MTC that makes the uplink communication of new LTE system be more suitable for the alarm class uses: (1) at first evolved base station can dispose SR to each MTC terminal longer cycle, thereby adapt to the more sparse characteristics of MTC terminal uplink communication, saved interface-free resources; (2) then evolved base station configuration than shorter CSR of SR cycle for all MTC terminals; (3) thus, in case certain MTC terminal has warning information, then can send dispatch request to evolved base station at nearest CSR or SR, reduce the time delay of upstream data communication; And, because short CSR of cycle is that all MTC terminals are shared, so can not cause the interface-free resources waste as special-purpose SR.
Base station embodiment
According to the embodiment of the invention, provide a kind of eNB (evolved Node B, evolved base station).
The eNB of present embodiment comprises:
Information issues module, and being used for issuing to the MTC terminal can be for the shared CSR positional information of a plurality of terminals;
The request receiving module is used for receiving the MTC terminal at the uplink scheduling request of CSR reporting position.
The eNB of present embodiment also comprises:
TIM terminal identification module is used for identifying the MTC terminal of sending uplink scheduling request according to uplink scheduling request;
Resource distribution module is used to the MTC terminal distribution uplink transmission resource that identifies;
Data reception module is used for receiving the MTC terminal according to the upstream data of the uplink transmission resource transmission that distributes.
Described TIM terminal identification module after being used for receiving uplink scheduling request, is identified the MTC terminal of sending uplink scheduling request according to the terminal iidentification (being C-RNTI) that uplink scheduling request carries.
Information issues module, and also being used for issuing to the MTC terminal can be for the SR positional information of single MTC terminal-specific.
In the present embodiment, increased ascending control channel CSR newly, this channel is channel shared by multiple users, takies 2 ascending resource pieces, and each CSR can send for the MTC terminal C-RNTI information of 16 bits; The time-frequency position of ascending control channel CSR and the information such as orthogonal code that take are disposed by evolved base station, and inform the MTC terminal by the rrc layer control signal.
Compared with prior art, eNB of the present invention, the CSR that shares by introducing a plurality of MTC terminals, the MTC that makes the uplink communication of new LTE system be more suitable for the alarm class uses: (1) at first evolved base station can dispose SR to each MTC terminal longer cycle, thereby adapt to the more sparse characteristics of MTC terminal uplink communication, saved interface-free resources; (2) then evolved base station configuration than shorter CSR of SR cycle for all MTC terminals; (3) thus, in case certain MTC terminal has warning information, then can send dispatch request to evolved base station at nearest CSR or SR, reduce the time delay of upstream data communication; And, because short CSR of cycle is that all MTC terminals are shared, so can not cause the interface-free resources waste as special-purpose SR.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (25)
1. a communication means is characterized in that, comprising:
The base station issues and can for the shared CSR positional information of a plurality of terminals, receive described terminal at the uplink scheduling request of described CSR reporting position to terminal.
2. method according to claim 1 is characterized in that, comprises after the step of the uplink scheduling request of receiving terminal:
The terminal of described uplink scheduling request is sent according to described uplink scheduling request identification in the base station, and is described terminal distribution uplink transmission resource.
3. method according to claim 2 is characterized in that, the step that identification of base stations is sent the uplink scheduling request terminal specifically comprises:
The terminal of described uplink scheduling request is sent in the terminal iidentification identification that carry according to described uplink scheduling request described base station.
4. method according to claim 1 is characterized in that, also comprises:
Described base station issues to terminal can be for the SR positional information of single terminal-specific.
5. method according to claim 4 is characterized in that, the repetition period of described SR is longer than the repetition period of described CSR.
6. a communication means is characterized in that, comprising:
Terminal receives the CSR positional information that supplies a plurality of terminals to share that the base station issues, and sends uplink scheduling request in described CSR position to described base station.
7. method according to claim 6 is characterized in that, comprises after the step that sends uplink scheduling request to the base station:
Terminal receives described base station according to the uplink transmission resource that described uplink scheduling request distributes, and utilizes described uplink transmission resource to carry out the transmission of upstream data.
8. method according to claim 7 is characterized in that, further comprises:
Described terminal receives the SR positional information for single terminal-specific that described base station issues.
9. method according to claim 8 is characterized in that,
When needs sent upstream data, described terminal was determined the nearest subframe of carrying SR position and CSR position;
If the subframe of carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, described terminal is chosen on this SR position of carrying SR position subframe and sends uplink scheduling request to described base station.
10. method according to claim 9 is characterized in that,
If carry the subframe of SR position after the subframe of carrying the CSR position, described terminal is chosen on this CSR position of carrying CSR position subframe and sends uplink scheduling request to described base station.
11. according to claim 9 or 10 described methods, it is characterized in that,
Described terminal after sending uplink scheduling request to described base station, if do not receive the indication information of the distribution uplink transmission resource that described base station issues, then in described SR position or the CSR position again send uplink scheduling request to described base station.
12. a communication terminal is characterized in that, comprising:
Information receiving module is used for receiving the CSR positional information that supplies a plurality of terminals to share that the base station issues;
The first request sending module is used for sending uplink scheduling request in described CSR position to described base station.
13. terminal according to claim 12 is characterized in that, also comprises:
The resource receiver module is used for receiving the uplink transmission resource that described base station is distributed according to described uplink scheduling request;
Data transmission module is used for utilizing described uplink transmission resource to carry out the transmission of upstream data.
14. terminal according to claim 12 is characterized in that,
Described information receiving module also is used for receiving the SR positional information for single terminal-specific that described base station issues.
15. terminal according to claim 14 is characterized in that, described terminal specifically comprises:
The subframe determination module is used for determining the nearest subframe of carrying SR position and CSR position when needs send upstream data;
The second request sending module, if the subframe that is used for carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, be chosen on this SR position of carrying SR position subframe and send uplink scheduling request to described base station.
16. terminal according to claim 15 is characterized in that,
Described the second request sending module is if the subframe that also is used for carrying the SR position is chosen on this CSR position of carrying CSR position subframe and sends uplink scheduling request to described base station after the subframe of carrying the CSR position.
17. according to claim 15 or 16 described terminals, it is characterized in that, also comprise:
The indication information judge module is used for after sending uplink scheduling request to described base station, the indication information of the distribution uplink transmission resource that judges whether to receive that described base station issues;
Described the second request sending module, if also be used for not receiving the indication information of the distribution uplink transmission resource that described base station issues, then in described SR position or the CSR position again send uplink scheduling request to described base station.
18. a communication base station is characterized in that, comprising:
Information issues module, and being used for issuing to terminal can be for the shared CSR positional information of a plurality of terminals;
The request receiving module is used for receiving described terminal at the uplink scheduling request of described CSR reporting position.
19. base station according to claim 18 is characterized in that, also comprises:
TIM terminal identification module is used for identifying the terminal of sending described uplink scheduling request according to described uplink scheduling request;
Resource distribution module is used to the terminal distribution uplink transmission resource that identifies.
20. base station according to claim 19 is characterized in that,
Described TIM terminal identification module, the terminal of described uplink scheduling request is sent in the terminal iidentification identification that is used for carrying according to described uplink scheduling request.
21. base station according to claim 18 is characterized in that,
Described information issues module, and also being used for issuing to terminal can be for the SR positional information of single terminal-specific.
22. a communication system is characterized in that, comprising:
The base station is used for issuing and can for the shared CSR positional information of a plurality of terminals, receiving described terminal at the uplink scheduling request of described CSR reporting position to terminal;
Terminal is used for receiving the CSR positional information that supplies a plurality of terminals to share that described base station issues, and sends uplink scheduling request in described CSR position to described base station.
23. system according to claim 22 is characterized in that,
Described base station, the terminal of described uplink scheduling request is sent in the terminal iidentification identification that also is used for carrying according to described uplink scheduling request, and is described terminal distribution uplink transmission resource;
Described terminal also is used for receiving described base station according to the uplink transmission resource that described uplink scheduling request distributes, and utilizes described uplink transmission resource to carry out the transmission of upstream data.
24. system according to claim 22 is characterized in that,
Described base station, also being used for issuing to described terminal can be for the SR positional information of single terminal-specific;
Described terminal, also be used for receiving the SR positional information for single terminal-specific that described base station issues, when needs send upstream data, determine the nearest subframe of carrying SR position and CSR position, if the subframe of carrying the SR position before the subframe of carrying the CSR position or both be in same subframe, be chosen on this SR position of carrying SR position subframe and send uplink scheduling request to described base station; If carry the subframe of SR position after the subframe of carrying the CSR position, be chosen on this CSR position of carrying CSR position subframe and send uplink scheduling request to described base station.
25. system according to claim 24, it is characterized in that, described terminal, also be used for after sending uplink scheduling request to described base station, if do not receive the indication information of the distribution uplink transmission resource that described base station issues, then in described SR position or the CSR position again send uplink scheduling request to described base station.
Priority Applications (2)
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| CN2011102792232A CN103024906A (en) | 2011-09-20 | 2011-09-20 | Communication method, terminal, base station and system |
| PCT/CN2012/081526 WO2013041011A1 (en) | 2011-09-20 | 2012-09-18 | Communication method, terminal, base station and system |
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| CN2011102792232A CN103024906A (en) | 2011-09-20 | 2011-09-20 | Communication method, terminal, base station and system |
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