CN102378129A - Method for transmitting and receiving system message, device and equipment thereof - Google Patents
Method for transmitting and receiving system message, device and equipment thereof Download PDFInfo
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- CN102378129A CN102378129A CN2010102548968A CN201010254896A CN102378129A CN 102378129 A CN102378129 A CN 102378129A CN 2010102548968 A CN2010102548968 A CN 2010102548968A CN 201010254896 A CN201010254896 A CN 201010254896A CN 102378129 A CN102378129 A CN 102378129A
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a method for transmitting and receiving a system message, a device for transmitting and receiving the system message, and equipment for transmitting and receiving the system message, which are used for reducing the occupied public search space resources when a system message is transmitted, and lowering the energy consumption when the system message is received. The method for transmitting the system message comprises the steps of: generating a system message block 1 on a system carrier wave, wherein the system message block 1 comprises 2-N scheduling information of the other system message blocks, and each scheduling information indicates a time frequency position which corresponds to each other system message block; and carrying the generated system message block 1 on the system carrier cave so as to be transmitted.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of sending and receiving method, device and equipment of system message.
Background technology
MTC (Machine-Type Communication; Machine Type communication) be meant communicating by letter between machine and the machine (equipment and equipment); Be also referred to as M2M communication; As shown in Figure 1, the MTC application scenarios comprises MTC terminal, Operator domain (operation domain) and MTC server, is a kind of communication scenes that does not need the people to participate in.Present 3GPP (3rd Generation Partnership Project; 3G (Third Generation) Moblie standardization body) begun the to be correlated with discussion of study item (study clauses and subclauses); Studying the optimization that whether is necessary MTC is carried out network facet; Whether particularly following magnanimity MTC terminal applies can impact interpersonal communication in real network the time, and interpersonal communication is also referred to as H2H (Human to Human) communication.Consider following MTC application prospects, how to different application scenes the network based on H2H communication to be optimized is one of important directions of MTC research.
Core net standard 3GPP 22.368 has defined 16 kinds of key characters of MTC at present, comprises Hypomobility, time control type, time delay tolerance type, online small data transmission type etc.To different application scenes, comprise type of checking meter application, Long-distance Control etc., the combination that possibly have one of them characteristic or have several characteristics simultaneously.
MTC inserts at the terminal little bandwidth special carrier and carries small data type MTC business, can reduce professional the influencing each other of communicating by letter with H2H of MTC on the one hand, can also improve the resource utilization of system on the other hand.Therefore, the special carrier that is designed for MTC is an important research direction, and the transmission of system message and reception are the first steps of research on this special carrier.
Below, be example with LTE (Long Term Evolution, Long Term Evolution plan) system, introduce the method for sending and receiving of system message in the prior art.
LTE TDD system has adopted the frame structure shown in Fig. 2 a: a 10ms radio frames (Frame) is made up of two 5ms fields; Each field is by business time-slot (the Time Slot of 8 0.5ms; TS) and three special areas form; Three special areas are respectively: descending pilot frequency time slot (DwPTS), come downwards to up protection (GP) and uplink pilot time slot (UpPTS) at interval, the length of three special areas can be by the high-level signaling flexible configuration, but total length maintenance 1ms is constant.Two continuous business time-slots form a sub-frame (Sub-Frame, SF), the length of each subframe is 1ms; Comprise 4 sub-frame in each field; Comprise 8 sub-frame in the radio frames, be followed successively by subframe #0, subframe #1...... subframe #7, subframe #0 always is assigned as the transmission downlink business.
LTE FDD system has adopted the frame structure shown in Fig. 2 b: a 10ms radio frames (Frame) is made up of two 5ms fields, and each field is by business time-slot (Time Slot, TS) composition of 10 0.5ms; Two continuous business time-slots are formed a sub-frame (Sub-Frame; SF), the length of each subframe is 1ms, comprises 5 sub-frame in each field; Comprise 10 sub-frame in the radio frames, be followed successively by subframe #0, subframe #1...... subframe #9.
(each subframe on the time domain is divided into some Resource Block again according to frequency for Orthogonal Frequency Division Multiplex, OFDM) technology, and the least unit of scheduling of resource is a Resource Block in the LTE system based on OFDM in the LTE system.
In the LTE system,, system message is divided into different message blocks, comprises main system message, System information block 1, System information block 2...... System information block 12 according to the difference in functionality of bearing.The sending method of system message comprises:
1, the transmission of main system message
The main system message bearing is on the fixed resource piece position of the 0th work song frame of each radio frames of system carrier, and promptly the fixedly time-frequency position terminal equipment of main system message can be known in advance.Comprise carrier bandwidths information, System Frame Number and PHICH (Physical HARQ Indicator Identifier, Physical HARQ Indicator Channel) configuration information in the main system message.
2, the transmission of System information block 1
System information block 1 is carried on the 5th work song frame of even number radio frames of system carrier, and concrete resource block location terminal equipment is not known, needs to obtain through blind Detecting; In the common search space of this subframe; Need to place and comprise SI-RNTI (System Information-Radio Network Temporary Identifier; The system message Radio Network Temporary Identifier) PDCCH (Physical Downlink Control Channel; Physical Downlink Control Channel), be used to indicate the shared resource block location of System information block 1.Comprise in the System information block 1 and whether permit user's access, the correlated identities of system, the schedule information and the scheduling window length of other System information block (System information block 2～12).Wherein the schedule information of other System information block (System information block 2～12) is provided by base station dispatcher, comprises original position that System information block 2～12 possibly occur and end position (representing through start frame and end frame and subframe numbers).
3, the transmission of other System information block (System information block 2～12)
The schedule information of other System information block (System information block 2～12) that the device that base station equipment is transferred according to the base station provides is placed this System information block on certain section Resource Block between corresponding original position that possibly occur of the System information block of certain identification number and the end position.This System information block can repeatedly be placed on the different resource piece between original position and the end position.And in the common search space of the subframe of having placed this System information block, place the PDCCH that comprises SI-RNTI, be used to the resource block location of indicating this System information block shared.
The method of reseptance of system message comprises:
1, the reception of main system message
Terminal equipment at first receives main system message, and terminal equipment only need (the fixed resource piece position of the 0th work song frame of each radio frames) be gone up reception main system message in the fixedly time-frequency position of knowing in advance.
2, the reception of System information block 1
After terminal equipment receives main system message, know System Frame Number and subframe numbers, and on the 5th work song frame of even number radio frames receiving system message blocks 1.But, because therefore terminal equipment and do not know System information block 1 residing resource block location on the 5th work song frame of even number radio frames need carry out blind Detecting.Blind Detecting is meant that terminal equipment searches for the PDCCH that comprises SI-RNTI in the common search space of this subframe of system carrier; After searching PDCCH; Just can know System information block 1 residing resource block location on current subframe through the resource block location of resolving its carrying, just know the concrete time-frequency position of System information block 1.Know that after the concrete time-frequency position of System information block 1, terminal equipment just can receiving system message blocks 1.
3, the reception of other System information block (System information block 2～12)
After terminal equipment receives System information block 1, original position and end position that System information block 2～12 possibly occur have just been obtained.If terminal equipment need be known n (n is the integer between 2 to 12) number System information block; Need in the common search space of the original position of its regulation and all subframes between the end position, carry out blind Detecting; Search comprises the PDCCH of SI-RNTI; In case search this PDCCH, just can know System information block n residing resource block location on current subframe through the resource block location of resolving its carrying, just known the concrete time-frequency position of System information block n.Know after the concrete time-frequency position of System information block n that terminal equipment just can receiving system message blocks n.
The method of sending and receiving of the system message that provides in the prior art; Transmission to System information block 1～12; Need base station equipment in the common search space of system carrier, to send and comprise the PDCCH of SI-RNTI, thereby taken the common search space resources of system carrier; To the reception of System information block 1～12, need terminal equipment in the common search space of the subframe of certain limit, to carry out blind Detecting, consumed the energy of terminal equipment.For the system of big bandwidth, support H2H communication, the common search space is bigger, and terminal equipment is not strict to the requirement of energy consumption, and above-mentioned shortcoming can be tolerated.But for the system of little bandwidth, support MTC, because the common search space is narrow, and terminal equipment is relatively stricter to the requirement of energy consumption, and above shortcoming is particularly outstanding.
Summary of the invention
The embodiment of the invention provides a kind of sending and receiving method, device and equipment of system message, the common search space resources that takies during in order to minimizing transmitting system message, the energy consumption when reducing receiving system message.
The embodiment of the invention provides a kind of sending method of system message, comprising:
System information block 1 on the generation system carrier wave comprises the schedule information of other System information block 2 to N in the said System information block 1, the corresponding time-frequency of said schedule information each other System information block of indication position;
The System information block 1 that generates is carried on the said system carrier sends.
The embodiment of the invention provides a kind of method of reseptance of system message, comprising:
According to System Frame Number that from the main system message that receives, extracts and the subframe numbers determined according to the fixedly time-frequency position of main system message, receiving system message blocks 1 on system carrier;
From the System information block 1 that receives, extract the schedule information of other System information block 2 to N, the corresponding time-frequency of said schedule information each other System information block of indication position.
The embodiment of the invention provides a kind of dispensing device of system message, comprising:
System information block 1 generation unit is used for the System information block 1 on the generation system carrier wave, comprises the schedule information of other System information block 2 to N in the said System information block 1, the corresponding time-frequency of said schedule information each other System information block of indication position;
System information block 1 transmitting element is used for the System information block 1 that generates is carried on the said system carrier and sends.
The embodiment of the invention provides a kind of base station equipment, comprises the dispensing device of said system message.
The embodiment of the invention provides a kind of receiving system of system message, comprising:
System information block 1 receiving element is used for according to System Frame Number that extracts from the main system message that receives and the subframe numbers of determining according to the fixedly time-frequency position of main system message, receiving system message blocks 1 on system carrier;
Extraction unit is used for from the schedule information of System information block 1 other System information block 2 to N of extraction that receives, the corresponding time-frequency of said schedule information each other System information block of indication position.
The embodiment of the invention provides a kind of terminal equipment, comprises the receiving system of said system message.
The sending and receiving method of the system message that the embodiment of the invention provides, device and equipment; When transmitting system message; In System information block 1, carry the schedule information of other System information block (System information block 2 is to N), the corresponding time-frequency of this schedule information each other System information block of indication position; When sending other System information block, other System information block is carried on the indicated time-frequency position of schedule information sends; Need not in the common search space of corresponding subframe, to place the PDCCH that comprises SI-RNTI thus; With the resource block location of indicating other System information block to take; Also just need not to take the common search space of corresponding subframe, thus the common search space resources that takies when having reduced transmitting system message.When receiving system message; Only need schedule information according to its System information block that carries in the System information block 1; On the time-frequency position of its indication, receive corresponding other System information block; Need not in the common search space of corresponding subframe, to carry out blind Detecting the energy consumption when having reduced receiving system message.The sending and receiving method of the system message that the embodiment of the invention provides, device and equipment are particularly useful for the communication system of little bandwidth, common search limited space.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Fig. 1 is a MTC application scenarios sketch map in the prior art;
Fig. 2 a is the wireless frame structure sketch map of LTE TDD system in the prior art;
Fig. 2 b is the wireless frame structure sketch map of LTE FDD system in the prior art;
Fig. 3 is the sending method implementing procedure figure of system message in the embodiment of the invention;
Fig. 4 is the method for reseptance implementing procedure figure of system message in the embodiment of the invention;
Fig. 5 is the structural representation of the dispensing device of system message in the embodiment of the invention;
Fig. 6 is the structural representation of the receiving system of system message in the embodiment of the invention;
Fig. 7 supports main system message-sending method implementing procedure figure in the system of MTC in the embodiment of the invention;
Fig. 8 is the sending method implementing procedure figure that supports System information block 1 in the system of MTC in the embodiment of the invention;
Fig. 9 is the sending method implementing procedure figure that supports other System information block 2 to N in the system of MTC in the embodiment of the invention;
The method of reseptance implementing procedure figure of main system message in the system of support MTC in Figure 10 embodiment of the invention;
Figure 11 is the method for reseptance implementing procedure figure that supports System information block 1 in the system of MTC in the embodiment of the invention;
Figure 12 is the method for reseptance implementing procedure figure that supports other System information block 2 to N in the system of MTC in the embodiment of the invention.
Embodiment
Common search space resources that takies when reducing transmitting system message and the energy consumption when reducing receiving system message; The embodiment of the invention provides a kind of sending and receiving method, device and equipment of system message, and this scheme is particularly useful for the communication system of little bandwidth, common search limited space.
Below in conjunction with Figure of description the preferred embodiments of the present invention are described; Be to be understood that; Preferred embodiment described herein only is used for explanation and explains the present invention; And be not used in qualification the present invention, and under the situation of not conflicting, embodiment and the characteristic among the embodiment among the present invention can make up each other.
As shown in Figure 3, the embodiment of the invention provides a kind of sending method of system message, comprises the steps:
System information block 1 on S301, the generation system carrier wave comprises the schedule information of other System information block (System information block 2 is to N) in this System information block 1, the corresponding time-frequency of this schedule information each other System information block of indication position;
In the practical implementation, can comprise whether permitting user's access, the correlated identities of system and the schedule information and the scheduling window length of other System information block in the System information block 1 of generation.Generally speaking; The schedule information of other system message blocks is to generate according to the indication information of base station dispatcher; Be used to indicate the corresponding time-frequency of each other System information block position, the cycle (being called for short the repetition period) that the System Frame Number that indication other system message blocks can occur in the schedule information and subframe numbers, the resource block location information on this subframe and this block of information repeat to occur.Particularly; Other System information block dispatch list can be set in System information block 1; At least one schedule entries in this dispatch list; Each schedule entries comprises the cycle that schedule entries numbering, corresponding System information block identification number, Resource Block indication information and the System information block of schedule entries repeat to occur, and wherein, the schedule entries numbering can provide through explicit or implicit expression mode; Explicit way promptly directly provides the schedule entries numbering, and the implicit expression mode can provide the schedule entries numbering through the order implicit expression that schedule entries occurs in schedule information.
S302, the System information block 1 that generates is carried on this system carrier sends.
In the practical implementation, can be to send on the 5th work song frame of radio frames of even number with the System Frame Number that the System information block 1 that generates be carried on system carrier; Perhaps, the System Frame Number that the System information block 1 that generates is carried on system carrier is to send on the fixed resource piece position of the 5th work song frame of radio frames of even number.
In the practical implementation, the sending method of system message can also comprise:
Other System information block on the generation system carrier wave;
Each other System information block that generates is carried on respectively on the indicated corresponding time-frequency of this other System information block position of said schedule information sends.
In the practical implementation; Other System information block on the generation system carrier wave; And the indication information that provides according to base station dispatcher; The System Frame Number that confirm to carry other System information block with subframe numbers, reach other System information block and be placed on the resource block location on this subframe, other System information block is placed on the fixed resource piece position of corresponding subframe and sends.
In the practical implementation, system carrier can be MTC (Machine Type communication) special carrier.The main system message of sending on this MTC special carrier comprises that the current system carrier of indication is the identification information of MTC special carrier, and this identification information can be realized through the carrier bandwidths value that the carrier bandwidths information setting that comprises in the said main system message can be discerned for MTC terminal only; And the main system message bearing that sends on the said MTC special carrier sends on the fixed resource piece position of the 0th work song frame of each radio frames.
Accordingly, as shown in Figure 4, the embodiment of the invention provides a kind of method of reseptance of system message, comprises the steps:
System Frame Number that S401, basis extract from the main system message that receives and the subframe numbers of determining according to the fixedly time-frequency position of main system message, receiving system message blocks 1 on system carrier;
S402, from the System information block 1 that receives, extract the schedule information of other System information block 2 to N, the corresponding time-frequency of this schedule information each other System information block of indication position.
In the practical implementation, after receiving main system message,, and determine subframe numbers according to the fixedly time-frequency position of main system message according to the System Frame Number that carries in the main system message.
Corresponding with the sending method of System information block 1:
If terminal equipment is not known the resource block location at System information block 1 place, then search comprises the PDCCH of SI-RNTI in the System Frame Number of system carrier is the common search space of the 5th work song frame of radio frames of even number; In case found this PDCCH, just can know System information block 1 residing resource block location on current subframe through the resource block location of resolving its carrying, just known the concrete time-frequency position of System information block 1; After knowing concrete time-frequency position, terminal equipment just can receiving system message blocks 1;
If terminal equipment is known the resource block location at System information block 1 place, be to receive on the corresponding resource block location of the 5th work song frame of radio frames of even number to get final product directly then at the System Frame Number of system carrier, need not to carry out blind Detecting.
After receiving System information block 1; Just can from System information block 1, extract the schedule information of other System information block, comprise the cycle that System Frame Number that other System information block can occur and subframe numbers and the fixed resource piece positional information on this subframe and other System information block repeat to occur in this schedule information.
In the practical implementation, the method for reseptance of system message can also comprise:
According to the schedule information of other System information block that from System information block 1, extracts, need to confirm the corresponding time-frequency of other System information block position of reception;
According to System Frame Number that from main system message, extracts and the subframe numbers determined according to the fixedly time-frequency position of main system message, on the time-frequency position of determining, receive this other System information block that need receive.
In the practical implementation; After receiving System information block 1; Schedule information according to other System information block that carries in the System information block 1; Determine the fixedly time-frequency position of carrying other System information block; And according to System Frame Number in the main system message that receives and the subframe numbers determined according to the fixedly time-frequency position of main system message, just can determine needs the corresponding fixedly time-frequency of other System information block position that receives, so just can be on the fixed resource piece position of the corresponding subframe of the system carrier of determining other System information block of reception.
Preferable; Can in System information block 1, comprise the cycle that identification number, Resource Block indication information and the System information block of the System information block that schedule entries numbering that at least one schedule entries, each schedule entries comprise that schedule entries numbering or the order implicit expression that in schedule information, occurs through said schedule entries provide and this schedule entries are corresponding repeat to occur.The schedule entries numbering that the identification number of other System information block that terminal equipment can receive as required is corresponding is confirmed the scheduling parameter value; And confirm the System Frame Number of this other System information block place radio frames according to the cycle that the scheduling parameter value of determining and System information block repeat to occur; Thereby; Confirm the subframe numbers of this other System information block place subframe according to the scheduling parameter value of determining; At last, confirm the position of this other System information block place fixed resource piece according to said Resource Block indication information.
In the practical implementation; System carrier can be MTC (Machine Type communication) special carrier; And in the main system message that on the fixedly time-frequency position of the MTC special carrier of knowing in advance, receives, comprise that the current system carrier of indication is the identification information of MTC special carrier; And when confirming to discern the said identification information that comprises in this main system message, extract the System Frame Number that comprises in this main system message and confirm subframe numbers according to said fixing time-frequency position.
Based on same inventive concept; A kind of transmission and receiving system and equipment of system message also are provided in the embodiment of the invention; Because the principle that these transmissions and reception, device and equipment are dealt with problems is similar with the sending and receiving method of system message; Therefore the enforcement of these devices and equipment can repeat part and repeat no more referring to the enforcement of method.
As shown in Figure 5, the embodiment of the invention provides a kind of dispensing device of system message, comprising:
Transmitting element 502 is used for the System information block 1 that generates is carried on this system carrier and sends.
In the practical implementation, generation unit 501 is used for the System information block 1 on the generation system carrier wave, comprises the schedule information of other System information block in this System information block 1, the corresponding time-frequency of this schedule information each other System information block of indication position.Transmitting element 502, specifically being used for the System Frame Number that the System information block 1 that generation unit 501 generates is carried on system carrier is to send on the 5th work song frame of radio frames of even number; Perhaps, transmitting element 502, specifically being used for the System Frame Number that the System information block 1 that generates is carried on system carrier is to send on the fixed resource piece position of the 5th work song frame of radio frames of even number.
In the practical implementation, generation unit 501 can also be used for other System information block on the generation system carrier wave; Transmitting element 502 can also be used for each other System information block that generation unit 501 generates is carried on respectively on the indicated corresponding time-frequency of this other System information block position of schedule information and sends.
In the practical implementation; System carrier can be MTC (Machine Type communication) special carrier; Generation unit 501 can also be used to generate the main system message on the MTC special carrier, comprises in the said main system message that the current system carrier of indication is the identification information of MTC special carrier; Transmitting element 502 can also be used for the main system message bearing that generation unit 501 generates is sent on the fixed resource piece position of the 0th work song frame of each radio frames.
As shown in Figure 6, the embodiment of the invention provides a kind of receiving system of system message, comprising:
Receiving element 601 is used for according to System Frame Number that extracts from the main system message that receives and the subframe numbers of determining according to the fixedly time-frequency position of main system message, receiving system message blocks 1 on system carrier;
Extraction unit 602 is used for from the schedule information of System information block 1 other System information block of extraction (System information block 2 is to N) that receives, the corresponding time-frequency of this schedule information each other System information block of indication position.
In the practical implementation, the receiving system of system message can also comprise:
Confirm unit 603, be used for schedule information, need to confirm the corresponding time-frequency of other System information block position of reception according to other System information block that extracts from System information block 1; And
Receiving element 601 can also be used for according to System Frame Number that extracts from main system message and the subframe numbers of determining according to the time-frequency position of main system message, on the time-frequency position of determining, receives this other System information block that need receive.
Wherein, Comprise at least one schedule entries in the said schedule information, each schedule entries comprises the cycle that identification number, Resource Block indication information and the System information block of the System information block that schedule entries is numbered, this schedule entries is corresponding that schedule entries numbering or the order implicit expression that in schedule information, occurs through said schedule entries provide repeat to occur; Confirm that then unit 603 specifically comprises:
First confirms subelement 6031, and the schedule entries numbering of the correspondence of other System information block that is used for receiving is as required confirmed the scheduling parameter value;
Second confirms subelement 6032, is used for confirming that according to first cycle that scheduling parameter value that subelement 6031 is determined and System information block repeat to occur confirms the System Frame Number of this other System information block place radio frames;
The 3rd confirms subelement 6033, is used for confirming according to the scheduling parameter value that first definite subelement 6031 is determined the subframe numbers of this other System information block place subframe;
The 4th confirms subelement 6034, is used for confirming according to said Resource Block indication information the position of this other System information block place fixed resource piece.
In the practical implementation, system carrier can be MTC (Machine Type communication) special carrier, and the system message receiving system can also comprise:
Judging unit 604; Being used for judging whether to discern the current system carrier of indication that the main system message that receives comprises is the identification information of MTC special carrier, comprises this identification information in the main system message that on the fixedly time-frequency position of the MTC special carrier of knowing in advance, receives;
Acquiring unit 605 is used in judged result when being, extracts the System Frame Number that comprises in this main system message and fixedly confirms subframe numbers in the time-frequency position according to this.
Need to prove that the dispensing device operated by rotary motion of above-mentioned each system message is in base station equipment, the receiving system operated by rotary motion of above-mentioned each system message is in terminal equipment.
The transmission of the system message that the embodiment of the invention provides and receiving method go for supporting H2H (Human to Human, the interpersonal) system of communication, the system of support MTC (Machine Type communication), or the like.The system that is particularly useful for the support MTC of little bandwidth, common search limited space for a better understanding of the present invention, with the example that is applied as in the system that supports MTC, is described the embodiment of the embodiment of the invention below.
Consider to the MTC business and may introduce new System information block; Therefore; In the system with little bandwidth, support MTC in the embodiment of the invention; System message is divided into: main system message, System information block 1, System information block 2...... System information block N, wherein, N is greater than or equal to 12 integer.
Based on the division of System information block, the embodiment of the invention provides the sending method of system message in the system that supports MTC, comprises the transmission of main system message, the transmission of System information block 1, the transmission of other System information block 2 to N, introduces respectively below.
Main system message-sending method in the system of support MTC, as shown in Figure 7, comprise the steps:
Main system message on S701, generation MTC (Machine Type communication) special carrier comprises in this main system message that the current system carrier of indication is the identification information of MTC special carrier;
Comprise the System Frame Number of carrier bandwidths information, radio frames and the configuration information of PHICH (the automatic repeat requests indicating channel of physical mixed) in the main system message that generates, comprise also in the main system message of generation that the current system carrier of indication is the identification information of MTC special carrier.
In the practical implementation; A kind of indicate current system carrier be the MTC special carrier implementation can for; With carrier bandwidths information setting in the main system message is the carrier bandwidths value that an ordinary terminal can't be discerned; And only this carrier bandwidths value can be discerned in the MTC terminal, and this carrier bandwidths value not only to have represented current carrier wave be the MTC special carrier, and can represent the bandwidth of current carrier wave.
S702, the main system message bearing that generates is sent on the fixedly time-frequency position of said MTC special carrier.
In the practical implementation, main system message is placed on the fixed resource piece position of the 0th work song frame of each radio frames of special carrier and sends, this fixedly time-frequency position terminal equipment know in advance.
The sending method of System information block 1 is as shown in Figure 8 in the system of support MTC, comprises the steps:
System information block 1 on S801, generation MTC (Machine Type communication) special carrier; The schedule information that comprises other System information block (System information block 2 is to N) in this System information block 1, this schedule information are used to indicate the corresponding time-frequency of each other System information block position;
S802, the System information block 1 that generates is carried on this MTC special carrier sends.
Below with schedule information for other System information block dispatch list is set in System information block 1 is example, the transmission to System information block 1 in the system of the support MTC of little bandwidth is described.Schedule information is that example is because manage than the scheduling that is easier to other System information block under this mode with the dispatch list in force, also is comparatively common way to manage; But; In theory; Also be fine with other mode, if the mode that can dispatch, manage other System information block can, how the execution mode of setting up other System information block dispatch list only is used to explain embodiment of the present invention; But do not mean and only can use this mode of dispatch list, can combine demand in practice to confirm corresponding mode in the implementation process.
The dispatch list of the time-frequency position of other System information block of carrying that adopts in the present embodiment can be set to following form, and is as shown in table 1.
Table 1
| The schedule entries numbering | Corresponding System information block identification number | The Resource Block indication information | Repetition period |
| 1 | System information block 2 | X | 80ms |
| 2 | System information block 3,4,5 | Y | 160ms |
Wherein, the schedule entries numbering also can provide through the implicit expression mode, and the sequencing that promptly occurs in dispatch list through each schedule entries in the dispatch list provides.The corresponding System information block identification number of schedule entries be used for representing the current scheduling clauses and subclauses corresponding be which or which System information block.The Resource Block indication information then is to be used for representing that corresponding System information block is the particular location that is carried on the PDSCH (Physical Downlink Shared Channel); Promptly corresponding System information block takies position and the quantity that PDSCH goes up PRB (Physical Resource Block, Physical Resource Block).The Resource Block indication information can be according to being provided with about the RIV (Resource IndicatorValue, Resource Block indication information) or Resource Block Assignment (resource block assignments) value of carrying among the PDCCH (Physical Downlink Control Channel) in 3GPP agreement 36.213 and 36.212.Repetition period then is used for representing the cycle that System information block repeats to occur.Terminal equipment can be as required, in the cycle that repeats to occur according to this System information block, the System information block of needs received.
Describe for example; As shown in table 1, it is System information block 2 that schedule entries is numbered the corresponding System information block of 1 schedule entries, according to the Resource Block indication information; System information block 2 is carried on the X position of PDSCH, and System information block 2 every 80ms repeat to send once; It is System information block 3,4,5 that schedule entries is numbered the corresponding System information block of 2 schedule entries, and according to the Resource Block indication information, these 3 System information blocks are carried on the Y position of PDSCH, and these 3 every 160ms of System information block repeat to send once.
The sending method of other System information block (System information block 2 is to N) is as shown in Figure 9 in the system of support MTC, comprises the steps:
Other System information block 2 on S901, generation MTC (Machine Type communication) special carrier is to N;
S902, each other System information block that will generate are carried on respectively on the indicated corresponding time-frequency of this other System information block position of schedule information and send.
Accordingly, the embodiment of the invention provides the method for reseptance of system message in the system that supports MTC, comprises the reception of main system message, the reception of System information block 1, the reception of other System information block 2 to N, introduces respectively below.
The method of reseptance of main system message is shown in figure 10 in the system of support MTC, comprises the steps:
S1001, on the fixedly time-frequency position of knowing in advance, receive main system message, comprise in this main system message that the current system carrier of indication is the identification information of MTC (Machine Type communication) special carrier;
S1002, when confirming to discern the said identification information that comprises in this main system message, obtain the System Frame Number that carries in the said main system message and confirm subframe numbers according to said fixedly time-frequency position.
In the practical implementation, on the fixed resource piece position of the 0th work song frame of each radio frames of special carrier, receive main system message, comprise in this main system message that the current system carrier of indication is the identification information of MTC special carrier.Can terminal equipment be confirmed discern this identification information, if can discern, then obtains System Frame Number that carries in the main system message and the subframe numbers of confirming to carry this main system message.
The method of reseptance of System information block 1 is shown in figure 11 in the system of support MTC, comprises the steps:
S1101, according to the System Frame Number that from main system message, extracts and according to the subframe numbers of determining of main system message, receiving system message blocks 1 on MTC (Machine Type communication) special carrier;
S1102, from the System information block 1 that receives, extract the schedule information of other System information block (System information block 2 is to N), this schedule information is used to indicate the corresponding time-frequency of each other System information block position.
The method of reseptance of other System information block (System information block 2 is to N) is shown in figure 12 in the system of support MTC communication, comprises the steps:
The schedule information of other System information block that S1201, basis extract from System information block 1 is confirmed the corresponding time-frequency of other System information block position that need receive;
S1202, according to the System Frame Number that from main system message, extracts and according to the subframe numbers of determining of main system message, on the time-frequency position of determining, receive this other System information block that need receive.
Below the schedule information of time-frequency position of other System information block be example with the mode of dispatch list, the method for reseptance of other System information block is described.In the present embodiment; Definite method of the Resource Block of bearing system message blocks N (N is the integer more than or equal to 2) is: in dispatch list, find the pairing schedule entries numbering of System information block N n; If schedule entries is numbered the implicit expression mode, then can obtain schedule entries numbering n through observing the position of schedule entries in whole dispatch list.Calculate x=(n-1) * w; W is a scheduling window length, and x is an integer, the SFN of the radio frames of bearing system message blocks N (System Frequency Number; System Frame Number) should satisfy: SFN mod T=FLOOR (x/10); Wherein, T is this other System information block repetition period in dispatch list, and the subframe numbers SUB that System information block N occurs should satisfy SUB=x mod 10.Determine after SFN and the SUB fixed resource piece position of System information block N on subframe of determining according to the Resource Block indication information in the dispatch list.After terminal equipment is determined the time-frequency position of other System information block that needs reception, then can receive this other System information block, thereby terminal equipment need not to have carried out blind Detecting when receiving other System information block in the time-frequency position of determining.
The sending and receiving method of the system message that the embodiment of the invention provides, device and equipment; When transmitting system message; In System information block 1, carry the schedule information of other System information block (System information block 2 is to N), the corresponding time-frequency of this schedule information each other System information block of indication position; When sending other System information block, other System information block is carried on the indicated time-frequency position of schedule information sends; Need not in the common search space of corresponding subframe, to place the PDCCH that comprises SI-RNTI thus; With the resource block location of indicating other System information block to take; Also just need not to take the common search space of corresponding subframe, thus the common search space resources that takies when having reduced transmitting system message.When receiving system message; Only need schedule information according to its System information block that carries in the System information block 1; On the time-frequency position of its indication, receive corresponding other System information block; Need not in the common search space of corresponding subframe, to carry out blind Detecting the energy consumption when having reduced receiving system message.The sending and receiving method of the system message that the embodiment of the invention provides, device and equipment are particularly useful for the communication system of little bandwidth, common search limited space.
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 (22)
1. the sending method of a system message is characterized in that, comprising:
System information block 1 on the generation system carrier wave comprises the schedule information of other System information block 2 to N in the said System information block 1, the corresponding time-frequency of said schedule information each other System information block of indication position;
The System information block 1 that generates is carried on the said system carrier sends.
2. the method for claim 1 is characterized in that, the said System information block 1 that generates is carried on the said system carrier sent, and specifically comprises:
The System Frame Number that the System information block 1 that generates is carried on said system carrier is to send on the 5th work song frame of radio frames of even number; Perhaps,
The System Frame Number that the System information block 1 that generates is carried on said system carrier is to send on the fixed resource piece position of the 5th work song frame of radio frames of even number.
3. the method for claim 1; It is characterized in that; Comprise at least one schedule entries in the said schedule information, each schedule entries comprises the cycle that identification number, Resource Block indication information and other System information block of other System information block that schedule entries is numbered, schedule entries is corresponding that schedule entries numbering or the order implicit expression that in schedule information, occurs through said schedule entries provide repeat to occur.
4. the method for claim 1 is characterized in that, also comprises:
Other System information block 2 on the generation system carrier wave is to N;
Each other System information block that generates is carried on respectively on the indicated corresponding time-frequency of this other System information block position of said schedule information sends.
5. like the arbitrary described method of claim 1 to 4, it is characterized in that said system carrier comprises Machine Type communication MTC special carrier.
6. method as claimed in claim 5 is characterized in that, comprises in the main system message on the said MTC special carrier that the current system carrier of indication is the identification information of MTC special carrier; And
The main system message bearing that sends on the said MTC special carrier sends on the fixed resource piece position of the 0th work song frame of each radio frames.
7. method as claimed in claim 6; It is characterized in that the current system carrier of said indication is that the identification information of MTC special carrier is realized through the carrier bandwidths value that the carrier bandwidths information setting that comprises in the said main system message can be discerned for MTC terminal only.
8. the method for reseptance of a system message is characterized in that, comprising:
According to System Frame Number that from the main system message that receives, extracts and the subframe numbers determined according to the fixedly time-frequency position of main system message, receiving system message blocks 1 on system carrier;
From the System information block 1 that receives, extract the schedule information of other System information block 2 to N, the corresponding time-frequency of said schedule information each other System information block of indication position.
9. method as claimed in claim 8 is characterized in that, also comprises:
According to the schedule information of other System information block 2 to N that from System information block 1, extracts, need to confirm the corresponding time-frequency of other System information block position of reception;
According to System Frame Number that from main system message, extracts and the subframe numbers determined according to the fixedly time-frequency position of main system message, on the time-frequency position of determining, receive this other System information block that need receive.
10. method as claimed in claim 9; It is characterized in that; Comprise at least one schedule entries in the said schedule information, each schedule entries comprises the cycle that identification number, Resource Block indication information and other System information block of other System information block that schedule entries is numbered, this schedule entries is corresponding that schedule entries numbering or the order implicit expression that in schedule information, occurs through said schedule entries provide repeat to occur; And
The schedule information of other System information block 2 to N that said basis extracts from System information block 1, the definite corresponding time-frequency of other System information block position that needs reception specifically comprises:
The schedule entries numbering that the identification number of other System information block that receives as required is corresponding is confirmed the scheduling parameter value;
The cycle that repeats to occur according to the scheduling parameter value of determining and other System information block is confirmed the System Frame Number of other System information block place radio frames that these needs receive;
Confirm the subframe numbers of other System information block place subframe that these needs receive according to the scheduling parameter value of determining;
Confirm the position of other System information block place fixed resource piece that these needs receive according to said Resource Block indication information.
11., it is characterized in that said system carrier comprises Machine Type communication MTC special carrier like claim 8,9 or 10 described methods.
12. method as claimed in claim 11 is characterized in that, in the main system message that on the fixedly time-frequency position of the MTC special carrier of knowing in advance, receives, comprises that the current system carrier of indication is the identification information of MTC special carrier; And
When affirmation can be discerned the said identification information that comprises in the said main system message, extract the System Frame Number that comprises in the said main system message and confirm subframe numbers according to said fixedly time-frequency position.
13. the dispensing device of a system message is characterized in that, comprising:
Generation unit is used for the System information block 1 on the generation system carrier wave, comprises the schedule information of other System information block 2 to N in the said System information block 1, the corresponding time-frequency of said schedule information each other System information block of indication position;
Transmitting element is used for the System information block 1 that generates is carried on the said system carrier and sends.
14. device as claimed in claim 13 is characterized in that,
Said transmitting element specifically is used for the System information block 1 that generates is carried on the 5th work song frame of even number radio frames of said special carrier and sends; Perhaps,
Said transmitting element specifically is used for the System information block 1 that generates is carried on the fixed resource piece position of the 5th work song frame of even number radio frames of said special carrier and sends.
15. device as claimed in claim 13 is characterized in that,
Said generation unit also is used for other System information block 2 on the generation system carrier wave to N;
Said transmitting element also is used for each other System information block that generates is carried on respectively on the indicated corresponding time-frequency of this other System information block position of said schedule information and sends.
16., it is characterized in that said system carrier comprises Machine Type communication MTC special carrier like claim 13,14 or 15 described devices; And
Said generation unit also is used to generate the main system message on the MTC special carrier, comprises in the said main system message that the current system carrier of indication is the identification information of MTC special carrier;
Said transmitting element also is used for the main system message bearing that generates is sent on the fixed resource piece position of the 0th work song frame of each radio frames.
17. a base station equipment is characterized in that, comprises like the arbitrary described dispensing device of claim 14 to 16.
18. the receiving system of a system message is characterized in that, comprising:
Receiving element is used for according to System Frame Number that extracts from the main system message that receives and the subframe numbers of determining according to the fixedly time-frequency position of main system message, receiving system message blocks 1 on system carrier;
Extraction unit is used for from the schedule information of System information block 1 other System information block 2 to N of extraction that receives, the corresponding time-frequency of said schedule information each other System information block of indication position.
19. device as claimed in claim 18 is characterized in that, also comprises:
Confirm the unit, be used for schedule information, need to confirm the corresponding time-frequency of other System information block position of reception according to other System information block 2 to N that extracts from System information block 1; And
Said receiving element also is used for according to System Frame Number that extracts from main system message and the subframe numbers of determining according to the time-frequency position of main system message, on the time-frequency position of determining, receives this other System information block that need receive.
20. device as claimed in claim 19; It is characterized in that; Comprise at least one schedule entries in the said schedule information, each schedule entries comprises the cycle that identification number, Resource Block indication information and other System information block of other System information block that schedule entries is numbered, this schedule entries is corresponding that schedule entries numbering or the order implicit expression that in schedule information, occurs through said schedule entries provide repeat to occur; And
Said definite unit specifically comprises:
First confirms subelement, and the schedule entries numbering that the identification number of other System information block that is used for receiving as required is corresponding is confirmed the scheduling parameter value;
Second confirms subelement, is used for confirming according to the cycle that the scheduling parameter value of determining and other System information block repeat to occur the System Frame Number of other System information block place radio frames that these needs receive;
The 3rd confirms subelement, is used for confirming according to the scheduling parameter value of determining the subframe numbers of other System information block place subframe that these needs receive;
The 4th confirms subelement, is used for confirming according to said Resource Block indication information the position of other System information block place fixed resource piece that these needs receive.
21., it is characterized in that said system carrier comprises Machine Type communication MTC special carrier like claim 18,19 or 20 described devices, said device also comprises:
Judging unit; Being used for judging whether to discern the current system carrier of indication that the main system message that receives comprises is the identification information of Machine Type communication MTC special carrier; Wherein, comprise said identification information in the main system message that on the fixedly time-frequency position of the MTC special carrier of knowing in advance, receives;
Acquiring unit is used in judged result when being, extracts the System Frame Number that comprises in the said main system message and confirms subframe numbers according to said fixedly time-frequency position.
22. a terminal equipment is characterized in that, comprises like the arbitrary described receiving system of claim 18 to 21.
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| CN102378129B (en) | 2014-05-07 |
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