CN104735720B

CN104735720B - A kind of transmission method, base station, terminal and the system of machine type communication business information

Info

Publication number: CN104735720B
Application number: CN201310714043.1A
Authority: CN
Inventors: 石靖; 戴博; 夏树强; 戴谦
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2018-11-16
Anticipated expiration: 2033-12-20
Also published as: CN104735720A; WO2014187358A1

Abstract

The invention discloses a kind of transmission methods of machine type communication business information, including：Base station will multiple user terminal UE transmission block TB merge after form a group TB, this group of TB is carried on PDSCH；Wherein, include in described group of TB：Each proprietary TB and/or TB head of UE；Described TB includes at least following one：Total TB, TB subheader, the type of service of the described TB business information or this group of TB for identifying the UE in group.The present invention further simultaneously discloses the transmission of a kind of base station, terminal and machine type communication business information.

Description

Transmission method, base station, terminal and system for machine type communication service information

Technical Field

The present invention relates to machine type communication technologies in the field of communications, and in particular, to a method, a base station, a terminal, and a system for transmitting machine type communication service information.

Background

User Equipment (UE) for Machine Type Communication (MTC) is also called Machine to Machine (M2M) user Communication equipment, and is a main application form of the internet of things at present. In recent years, due to the high spectrum efficiency of Long-Term Evolution (Long-Term Evolution, abbreviated LTE)/Long-Term Evolution advanced (Long-Term Evolution Advance, abbreviated LTE-Advance or LTE-a), more and more mobile operators select LTE/LTE-a as the Evolution direction of the broadband wireless communication system. MTC multi-type data services based on LTE/LTE-A will also be more attractive.

A Physical Downlink Control Channel (PDCCH for short) is defined in LTE/LTE-a. Wherein, information carried by a Physical Control Format Indicator Channel (PCFICH) is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for transmitting the PDCCH in one subframe. A Physical Hybrid ARQ Indicator Channel (PHICH) is used to carry acknowledgement/negative acknowledgement (ACK/NACK) feedback information of uplink transmission data, where ARQ is an abbreviation of automatic repeat-reQuest (automatic repeat-reQuest).

The PDCCH is used for carrying Downlink Control Information (DCI), and includes: uplink and downlink scheduling information, and uplink power control information.

Generally, the MTC terminal may obtain DCI by demodulating the PDCCH Channel in each subframe, so as to implement demodulation of a Physical Downlink Shared Channel (PDSCH) and a Physical Uplink Shared Channel (PUSCH). When demodulating DCI, judging whether to receive the information through Radio Network Temporary Identity (RNTI) information scrambled on Cyclic Redundancy Check (CRC).

The messages carried on the PDSCH are divided into common messages and user-specific messages, and for the common messages, usually, a plurality of UEs in one cell can receive the common messages at the same time, and the user-specific messages can be received by only one UE in one cell. And no matter the PDSCH carries a public message or a user-specific message, the PDCCH is required to perform scheduling indication, i.e. the terminal must correctly receive the PDCCH before being able to receive the PDSCH.

According to research, in practical application, there is a class of MTC terminals with the following characteristics: the number of the MTC terminals is large, the service packets are small, the service types are the same, the transmission bandwidth is limited, the MTC terminals have periodicity and low mobility or stationarity, and the like, for example: and intelligently reading the MTC terminal. When the method is applied to an LTE/LTE-A system, for the Transmission of a large number of MTC service packets, the data of each service packet is small, if the MTC service packets are processed according to the existing LTE/LTE-A protocol, one service packet only needs to use one Transmission Block (TB), and then one TB needs one PDCCH for scheduling Transmission. When a plurality of MTC terminals initiate service transmission at the same time, the blocking situation is greatly increased due to the limited PDCCH capacity of the control channel. The assumed blocking problem can be solved, an Enhanced Physical Downlink Control Channel (EPDCCH) is introduced into the LTE R11 version capacity expansion Control Channel, and Control overhead caused by a large number of Control channels will also adversely affect system efficiency.

The control channels and traffic channels have limited resources in the system and have fixed location areas, as shown in fig. 1. In order to reduce the downlink control information overhead, the following means can be adopted:

the method comprises the steps that firstly, the downlink control information of a plurality of users or the downlink control information of a plurality of PDSCHs/PUSCHs of one user is subjected to joint coding, so that the number of CRC (cyclic redundancy check) is reduced, the downlink control information is shared, and the overhead is reduced;

secondly, scheduling PDSCH/PUSCH is realized by using DCI with smaller overhead aiming at the limitation of special service and scheduling so as to reduce the overhead of downlink control information;

and a third mode adopts a group scheduling mode: the resources of a plurality of users are indicated through the scheduling of a control channel carrying group control information, and each user carries out PDSCH/PUSCH transmission on different resources.

However, because the number of users in MTC communication is large, each service packet needs corresponding control information, and even if the former two methods are used to jointly encode the control information or reduce the overhead, the amount of control information to be transmitted is still large because the amount of service information to be transmitted is too much. For the third mode, although the overhead of control information can be effectively reduced when there are a large number of users, when there are a large number of packet data services transmitted simultaneously, there is a problem that traffic channel resources are limited, and the overhead of control information is also increased due to the addition of group scheduling information. Therefore, it is necessary to provide a method for transmitting service information in a scenario where the number of users is large, a service packet is small, and a transmission bandwidth is limited during MTC communication.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a method, a base station, a terminal, and a system for transmitting machine type communication service information.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the embodiment of the invention provides a transmission method of machine type communication service information, which comprises the following steps:

combining transmission blocks TB of a plurality of user terminals UE by a base station to form a group TB, wherein the group TB is carried on a PDSCH;

wherein the group TB comprises: each UE has a TB and/or TB header exclusively; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the UE in the group or the service type of the TB in the group.

The embodiment of the invention also provides a transmission method of the machine type communication service information, which comprises the following steps:

a user terminal UE receives a group TB carrying a plurality of UE service information, wherein the group TB is carried on a PDSCH;

wherein the group TB comprises: each UE has a TB and/or TB header exclusively; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the user terminals in the group or the service type of the group TB.

combining the TBs of the plurality of UEs by the base station to form a group of TBs, wherein the group of TBs is carried on the PDSCH;

the UE receives the group TB carried on the PDSCH;

An embodiment of the present invention further provides a base station, where the base station includes: the device comprises a setting module and a sending module; wherein,

the setting module is used for combining the transmission blocks TB of a plurality of user terminals UE to form a group TB;

the sending module is configured to carry the group TB on a PDSCH;

An embodiment of the present invention further provides a terminal, where the terminal includes: a receiving module, configured to receive a group TB carrying multiple UE service information, where the group TB is carried on a PDSCH;

The embodiment of the invention also provides a transmission system of the machine type communication service information, which comprises the following steps: the base station and the terminal described above.

According to the transmission method, the base station, the terminal and the system of the machine type communication service information, the base station combines the TBs of the UE to form a group TB, and the group TB is borne on the PDSCH; the UE receives the group TB carried on the PDSCH; wherein the group TB comprises: each UE has a TB and/or TB header exclusively; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the UE in the group or the service type of the TB in the group. By adopting the scheme, the technical problems of control overhead reduction and the like when a large number of users exist and have small service packets in an LTE system can be solved, so that the transmission of a large number of user data can be scheduled and indicated in limited control channel resources on a network side, and the normal communication of the terminal is ensured. By adopting the technical scheme of the invention, the control information overhead in an LTE system can be reduced, the user information transmission efficiency is improved, the control blocking probability under the environment with a large number of machine type terminals is reduced, and the normal communication of terminal equipment is ensured.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.

Fig. 1 is a diagram illustrating distribution of control channels and traffic channels in resource locations in a system according to the related art;

fig. 2 is a schematic flow chart of a method for transmitting machine type communication service information according to an embodiment of the present invention;

FIG. 3 is a diagram of a block transport block according to an embodiment of the present invention;

fig. 4 is a method for transmitting machine type communication service information according to another embodiment of the present invention;

fig. 5 is a flowchart of a method for transmitting multi-user joint service information according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a system according to an embodiment of the present invention.

Detailed Description

In the embodiment of the invention: combining the TBs of the plurality of UEs by the base station to form a group of TBs, wherein the group of TBs is carried on the PDSCH; the UE receives the group TB carried on the PDSCH; wherein the group TB comprises: each UE has a TB and/or TB header exclusively; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the UE in the group or the service type of the TB in the group. The present embodiment can solve the existing problems.

The invention is described in detail below with reference to the drawings and examples.

An embodiment of the present invention provides a method for transmitting machine type communication service information, as shown in fig. 2, the method includes:

step 201: a base station combines Transmission Blocks (TB) of a plurality of user terminals (UE) to form a group TB;

step 202: the base station carries the set of TBs on the PDSCH.

Wherein the group TB comprises: each user terminal has a dedicated TB and/or TB header; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the user terminals in the group or the service type of the group TB.

Specifically, 1bit information may be used to indicate two different service types, or 2 bits may be used to indicate four different service types.

Preferably, the method further comprises: after bearing the group TB on the PDSCH, the base station carries out scheduling through the PDCCH or the EPDCCH; or,

the base station directly transmits the PDSCH carrying the group of TBs without using PDCCH or EPDCCH scheduling indications.

Preferably, the method further comprises: the base station configures group information and informs the user terminal of the group information in a cell, wherein the group information at least comprises one of the following information: group RNTI, serial number of user terminal in group.

Specifically, the group information is configured by the base station and is notified to the terminal through a random access msg2 message or RRC signaling. The group information is added in the RAR when the msg2 message is broadcast to the terminals.

Wherein, the base station combines the TBs of a plurality of user terminals, including:

the base station combines the TBs of the UE in the same group and segments the TB by using the same length; or,

the base station combines the TBs of the UEs in the same group and performs segmentation by default by using the same length (namely, the TB length TB of each UE_UEiSame) and adding the total TB head TB before TB combination_{head j}And/or TB subheaders as shown in fig. 3.

Specifically, there are four types of components of group TB, which are: total TB head TB_{head j}And each TB_UEiTotal TB head TB_{head j}And TB sub-header and individual TB_UEiTB Sum and Individual TB_UEi。

The length of the TB header is of a fixed length, and the fixed length value is the same as the TB length value of each UE or a predefined length value is adopted.

Wherein the TB head is longThe variable length value is an integral multiple of the TB length of each UE, the variable length value is preferably selected in a limited set, and the limited set preferably selects the TBTB of each UE_UEi1, 2, 4 or 8 times the length.

Preferably, the method further comprises: size TB of base station pair TB_GROUPjThe operation of supplementing 0bit is adopted, and at least one of the following modes is included: in TB head TB_{head j}Medium 0, after group TB 0.

Preferably, in said group TB, the TB head TB_{head j}Including information for distinguishing each UE, TB of each UE_UEiService information sent to each UE by a base station;

wherein the TB head TB_{head j}The information comprises at least one of: indicates this TB_GROUPjType, indication TB_UEiAttribution; TBTB for each UE_UEiScrambling with different scrambling sequences is used.

In particular, TB_{head j}Information indication TB_UEiAttribution, indicating each TB behind the TB header by way of bitmap_UEiTo which users within the group;

the different scrambling sequences comprise at least: generating sequences with different modes, generating sequences with the same mode but different configuration parameters, and generating different segments of the same sequence.

Preferably, the method further comprises: base station in group TBTB_GROUPjAdding CRC check bits after generation at least comprises one of the following modes:

to group TBTB_GROUPjCRC check bit added with Kbit, TBTB for each UE_UEiCRC check information of Jbit is added, wherein K is preferably 16 or 24, and J is preferably 8 or 16.

Wherein the PDCCH scheduling the PDSCH carrying the group TB is scrambled by a group RNTI.

Specifically, when RNTI scrambling is used, scrambling is carried out on CRC bits, and the number of the bits of the RNTI is equal to that of the CRC bits. For example: the value range of the group RNTI is as follows: the value FFF4-FFFC when the number of the bits is 16, the value FFFFF4-FFFFFC when the number of the bits is 24 and the value F4-FC when the number of the bits is 8. Wherein, different values or value ranges may represent different PDSCH traffic types.

And the PDSCH of the bearer group TB is transmitted on fixed time-frequency resources without using a PDCCH or EPDCCH indication.

Wherein, the PDSCH carrying the group TB is transmitted on fixed time-frequency resources, including:

the PDSCH is transmitted in a time domain in units of a period M, and is transmitted in a frequency domain using k Physical Resource Blocks (PRBs) in the center of a frequency band or on both sides of the frequency band. And a fixed modulation mode is used, and the CRC of the group TB is scrambled by using the group RNTI.

Specifically, the period M preferably takes values in a set {10ms, 20ms, 40ms, 80ms, 160ms, 640ms, 1s, 1min, 1hour }; k is the value in the set {1, 2, 4, 6, 8, 10, 16 }; the fixed demodulation method is preferably a Quadrature Phase Shift Keying (QPSK) method.

Preferably, the method further comprises: the base station receives TBTB from the UE group_GROUPjCorrect or wrong feedback information after CRC check, wherein the correct or wrong feedback information is fed back by one UE in the group; wherein, one UE in the group selects at least one of the following modes: the serial number of the terminal in the group is minimum, and the serial number of the terminal in the group is maximum.

Preferably, the method further comprises: the base station receives TBTB from the UE group_GROUPjAnd error feedback information after CRC check is carried out, wherein the error feedback information is fed back by each UE which checks errors in the group, and at the moment, each UE in the group uses the same PUCCH resource.

Preferably, the method further comprises: the base station receives TBTB from the UE to each UE_UEiAnd performing ACK/NACK feedback information after CRC check, wherein each UE in the group uses the PUCCH resource of the group.

Preferably, the method further comprises the base station receiving a group TBTB_GROUPjAfter the NACK feedback information, the group TB needs to be retransmitted, and at this time, the TBTB of each UE is transmitted_UEiThe same Redundancy Version (RV) is used.

Preferably, the method further comprises the step that the base station receives the TBTB of the UE_UEiAfter the NACK feedback information is received, the base station forms the TBs of all the UE which feed back the NACK into a new group TB for retransmission, and the TBTB of each UE is transmitted at the moment_UEiThe same RV was used.

The embodiment of the invention also provides another transmission method of the machine type communication service information, which comprises the following steps:

a user terminal (UE) receives a group TB carrying a plurality of UE service information, wherein the group TB is carried on a PDSCH;

Preferably, the UE receives a group TB including: each UE in the group shares the same DCI Format and RNTI, the PDCCH or the EPDCCH is detected in the same search space, and the position of the PDSCH bearing the group TB is determined according to the information of the PDCCH or the EPDCCH; or directly receiving the PDSCH carrying the group TB without receiving a PDCCH or EPDCCH scheduling indication.

Preferably, the method further comprises: the UE receives group information notified by a base station, the group information including at least one of: group RNTI, serial number of UE in the group.

And the PDCCH of the PDSCH of the scheduling bearing group TB is scrambled by a group RNTI.

Preferably, the method further comprises: UE receives PDSCH to obtain group TBTB_GROUPjThen, according to TBTB of each UE_{head j}Determining the TB header, and obtaining the TB belonging to each UE according to the TB header information.

Wherein, in the group TB, the TB head TB_{head j}Including information for distinguishing each UE, TBTB of each UE_UEiIs the service information of each UE; wherein, the TB_{head j}The information comprises at least one of: indicate this group TBTB_GROUPjType of, TBTB indicating each UE_UEiTo which it belongs.

Preferably, the receiving, by the UE, a group TB carrying a plurality of UE service information includes:

the UE receives a group TB which is the same as the UE as a group of users, and the group TB is segmented by default by using the same length (each TB_UEiThe same length); alternatively, the group TBs are segmented using the same length and there is a total TB header TB before TB combining_{head j}And/or TB subheads.

Wherein, the length of the TB header adopts a fixed length, a fixed length value and the TBTB of each UE_UEiThe lengths are the same or a predefined length value is used.

Wherein the TB header length adopts a variable length, and the variable length value is the TBTB of each UE_UEiInteger multiples of the length are preferably taken in a finite set, preferably TB_UEi1, 2, 4 or 8 times the length.

Preferably, the method further comprises: receiving a group TBTB at a UE_GROUPjAnd then performing CRC check, wherein the CRC check at least comprises one of the following modes: to group TBTB_GROUPjPerforming CRC check of Kbit to the TBTB of the UE_UEiAnd performing CRC check of Jbit, wherein K is 16 or 24, and J is 8 or 16.

Preferably, the method further comprises: the UE in the group receives PDSCH carrying the group TB on fixed time-frequency resources.

Wherein the UE receiving the PDSCH on fixed time-frequency resources includes:

and the UE receives the data in a time domain by taking the period M as a unit, fixedly receives k PRBs in a frequency domain at the center of a frequency band or at two sides of the frequency band, demodulates the data by adopting a fixed modulation mode, and descrambles the CRC of the group TB by using the group RNTI.

Specifically, the period M preferably takes values in a set {10ms, 20ms, 40ms, 80ms, 160ms, 640ms, 1s, 1min, 1hour }; k is the value in the set {1, 2, 4, 6, 8, 10, 16 }; the fixed demodulation method is preferably a QPSK method.

Preferably, the method further comprises: TBTB in UE group_GROUPjAfter CRC check, information which is received correctly or incorrectly needs to be fed back, and the information which is received correctly or incorrectly is fed back by one UE in the group;

wherein the selection of one UE in the group at least comprises one of the following modes: the UE serial number in the group is minimum, and the UE serial number in the group is maximum.

Preferably, the method further comprises: TBTB in UE group_GROUPjAfter CRC check, it is necessary to feed back information of reception errors, where the information of reception errors is fed back by each UE checking errors in the group, and at this time, each UE in the group uses the same PUCCH resource.

Preferably, the method further comprises: TBTB of UE to each UE_UEiAfter CRC check, ACK/NACK feedback information needs to be fed back, and at the moment, each UE in the group uses the PUCCH resource of the group.

In particular, configured by higher layer signallingBy the formulaAnd determining the position of the PUCCH resource, wherein i is the number of each user in the group. Wherein, theNumber n indicating user using PUCCH channel_CCEWhich is indicative of the number of control channel elements,to representA group PUCCH resource sequence number.

Preferably, the method further comprises: UE feedback group TBTB_GROUPjAfter the NACK, the group TB needs to be received again, and at this time, the TBTB of each UE is received again_UEiThe same RV was used.

Preferably, the method further comprises: UE feeds back TB of UE_UEiAfter NACK, a new group TB needs to be received, and at this time, the TBTB of each UE is received_UEiThe same RV was used.

As shown in fig. 4, an embodiment of the present invention further provides a method for transmitting machine type communication service information, where the method includes:

step 401: combining the TBs of the plurality of UEs by the base station to form a group of TBs, wherein the group of TBs is carried on the PDSCH;

step 402: the UE receives the group TB carried on the PDSCH.

The embodiment of the invention solves the technical problems of low control overhead and the like when a large number of users exist and have small service packets in an LTE system, thereby realizing that the network side can schedule and indicate the sending of a large number of user data in limited control channel resources and ensuring the normal communication of the terminal. By adopting the technical scheme of the invention, the control information overhead in an LTE system can be reduced, the user information transmission efficiency is improved, the control blocking probability under the environment with a large number of machine type terminals is reduced, and the normal communication of terminal equipment is ensured.

Fig. 5 is a flowchart of a method for transmitting multi-user joint service information according to an embodiment of the present invention, as shown in fig. 5, including:

step 501: a base station sends the joint service information of multiple users;

step 502: the terminal receives the joint service information of the multiple users;

step 503: the terminal feeds back correct/wrong receiving information;

step 504: and after receiving the feedback information, the base station finishes the transmission or transmits the multi-user joint service information again.

The method of the present invention is further described in detail below with respect to different application scenarios in conjunction with the flow chart of fig. 5.

Example 1

Before the following steps, the base station configures group information, and notifies the group information to the terminal in the cell, and when the group information is notified to the terminal in the msg2 message in the random access, the group information is added to the RAR, and the group information includes the number of the terminal in the group.

Step 501, the base station sends the joint service information of multiple users.

The base station combines the TBs of a plurality of users to form a group of TBs, and the group of TBs is loaded on a PDSCH and scheduled through a PDCCH or an EPDCCH. The PDCCH is scrambled by a group RNTI, the value of the PDCCH is FFFC, and only users in the group can demodulate the PDCCH. The group TB includes a TB header and user-specific TBs. Wherein the TB header is used to identify the user information within the group. For example: the multi-user group scheduled by the base station has 10 UEs, TBs_{head j}The allocation of 10 bits "1001011111" indicates that the next 7 TBUEi are data for the 1 st, 4 th, 6 th, 7 th, 8 th, 9 th, 10 th UEs within the group. Each TB_UEiAre of the same length and TB_{head j}And adopting a predefined length value, namely the number of users of the multi-user group. And the group TB is supplemented with 0 to meet the TB size specified by the LTE/LTE-A system, and if the group TB is just suitable, the group TB is not supplemented with 0. Group TBTB_GROUPjThe addition of 24-bit CRC check bits is performed after the generation. Optionally, each TB_UEiAnd scrambling by using different segments of the same scrambling sequence, and adjusting the channel to a PDSCH channel indicated by PDCCH or EPDCCH scheduling after channel coding.

Step 502, the terminal receives the joint service information of the multiple users.

The terminal firstly receives the PDCCH, descrambles the RNTI, confirms that the multi-user joint service information is sent to the terminal after the CRC is checked to be correct, and demodulates the PDSCH on corresponding resources after the DCI is obtained. Demodulating PDSCH according to MCS indicated in DCI to obtain group TBTB_GROUPjThen, first according to TB_{head j}Determining the length of a TB header, and when confirming that the information of the user exists according to the TB header information, optionally operating as follows: obtaining TB belonging to the UE according to descrambling of one segment of the same scrambling sequence_UEi. And when the TB header information confirms that no information of the user exists, ending the receiving and waiting for the next receiving of the joint service information of the multiple users.

In step 503, the terminal feeds back the correct/incorrect information.

Receiving the users in the group of multi-user joint transmission, and checking the TBTB_GROUPjThe following 24bit CRC determines whether the reception is correct or incorrect. At this time, the user is the user with the smallest serial number of the terminals in the group, so the user feeds back the ACK/ANCK information and feeds back the ACK/NACK information through the PUCCH. After the other users verify, the feedback of the ACK/NACK information is not carried out because the users with the minimum terminal serial number in the group are not.

Step 504, after receiving the feedback information, the base station ends the transmission or performs the transmission of the multi-user combined service information again.

And the base station acquires the ACK/NACK information by receiving the PUCCH, and when the ACK information is the ACK information, the base station confirms that the transmission of the multi-user combined service information is correct at this time, and the process is finished. When the information is NACK information, the first-transmitted group TB data needs to be repeatedly transmitted, and the same RV version is used for retransmission.

Through the preferred embodiment, the service data of a plurality of users can be transmitted in a centralized way, the control channel overhead is saved, and the normal communication of each user in the same group is ensured through a multi-user combined transmission method.

Example 2

Step 501, the base station sends the joint service information of multiple users. The base station combines the TBs of a plurality of users to form a group of TBs, and the group of TBs is loaded on a PDSCH and scheduled through a PDCCH or an EPDCCH. The PDCCH is scrambled by the group RNTI, which takes the value of FFF4, and only the users in the group can demodulate the PDCCH. The group TB includes a TB header and user-specific TBs. The TB header is used to identify user information within the group. This multi-user group, e.g. scheduled by the base station, has 5 UEs, TBs_{head j}Allocating 5 bits "10111" to indicate the following 4 TBs_UEiIs the data of the 1 st, 3 rd, 4 th, 5 th UEs within the group. Each TB_UEiAre of the same length and TB_{head j}And adopting a predefined length value, namely the number of users of the multi-user group. And the group TB is supplemented with 0 to meet the TB size specified by the LTE/LTE-A system, and if the group TB is just suitable, the group TB is not supplemented with 0. Group TBTB_GROUPjAfter generation, 16-bit CRC check bit is added, 4 TBs_UEiThe addition of CRC check bits of 8 bits is performed, respectively. Optional operation, each TB_UEiDifferent segments of the same scrambling sequence are used for scrambling. And after channel coding, adjusting the channel to a PDSCH channel indicated by PDCCH or EPDCCH scheduling.

Step 502, the terminal receives the joint service information of the multiple users. The terminal firstly receives the PDCCH, descrambles the RNTI, confirms that the multi-user joint service information is sent to the terminal after the CRC is checked to be correct, and demodulates the PDSCH on corresponding resources after the DCI is obtained. Demodulating PDSCH according to MCS indicated in DCI to obtain group TBTB_GROUPjThen, first according to TB_{head j}Determining the length of a TB header, and optionally descrambling one of the segments of the same scrambling sequence to obtain the TB belonging to the UE when the information of the user is confirmed according to the TB header information_UEi. When confirming that no information of the user exists according to the TB header information, ending the receiving and waiting for the next time for moreAnd (4) receiving by the user.

In step 503, the terminal feeds back the correct/incorrect information. Receiving the users in the group of multi-user joint transmission, and checking the TBTB_GROUPjThe following 16-bit CRC determines for the first time whether the reception is correct or incorrect. When error is checked, each user in the group is respectively corresponding to TB_UEiThe following 8-bit crc determines the reception is correct or incorrect for the second time. At this time, each user receiving data in the group carries out ACK/ANCK information feedback, ACK/NACK information is fed back through the PUCCH of the group, and the PUCCH logical channel position of the user is obtained through high-level signaling and the number in the group.

Step 504, after receiving the feedback information, the base station ends the transmission or performs the transmission of the multi-user combined service information again. And the base station acquires the ACK/NACK information by receiving the PUCCH, and when the ACK information is fed back by the user, the multi-user joint transmission is confirmed to be correct, and the process is finished. When the user feeds back NACK information, it needs to be transmitted again in the group TB manner or separately. The transmission mode needs to be determined by combining the number of retransmission users and the situation of control channel resources. For example, if a large amount of control resources are available in the network and the number of UEs requiring retransmission is small, individual transmission can be performed for each user; when the control resources in the network are in shortage and the number of the UE needing to be retransmitted is large, the retransmission can be continuously carried out in a group transmission mode; when the control resources in the network are in shortage and the number of the UE needing to be retransmitted is small, proper time delay can be carried out and independent transmission can be carried out; when a large amount of control resources are available in the network and there are many UEs requiring retransmission at the same time, the group transmission method is preferred to perform retransmission.

Through the preferred embodiment, the service data of a plurality of users can be transmitted in a centralized way, and the retransmission can adopt multi-user transmission different from the first transmission, thereby further saving the control channel overhead, and ensuring the normal communication of each user in the same group through a multi-user combined transmission method.

Example 3

Before the following steps, the base station firstly configures group information, informs the group information to the terminal in a cell, and sends the group information to a user through RRC signaling, wherein the group information comprises a serial number of the terminal in the group.

Step 501, the base station sends the joint service information of multiple users. The base station combines the TBs of a plurality of users to form a group of TBs, and the group of TBs is loaded on a PDSCH and scheduled through a PDCCH or an EPDCCH. The PDCCH is scrambled by the group RNTI, which takes the value of FFF5, and only the users in the group can demodulate the PDCCH. The group TB includes a TB header and user-specific TBs. The TB header is used to identify user information within the group and the TB service type of the group. The TB head adopts a variable length, and the variable length value is TB_UEiInteger multiples of the length are preferably taken in a finite set, preferably TB_UEiLength 1, 2, 4 or 8 times. The multi-user group, e.g. scheduled by the base station, has 10 users, each TB_UEiLength of same and Kbit, TB head TB_{head j}Length of TB_UEi1 time of length is also Kbit, TB_{head j}Allocation of 10 bits "1000011111" indicates the next 6 TBs_UEiIs the data of 1 st, 6 th, 7 th, 8 th, 9 th, 10 th UEs in the group, each TB_UEiSame length, TB_{head j}The allocation (K-10) bit indicates that this group of TB services is a periodic service. And the group TB is supplemented with 0 to meet the TB size specified by the LTE/LTE-A system, and if the group TB is just suitable, the group TB is not supplemented with 0. Group TBTB_GROUPjAfter generation, 16-bit CRC check bit is added, 4 TBs_UEiThe addition of CRC check bits of 8 bits is performed, respectively. Optional operation, each TB_UEiDifferent segments of the same scrambling sequence are used for scrambling. And after channel coding, adjusting the channel to a PDSCH channel indicated by PDCCH or EPDCCH scheduling.

Step 502, the terminal receives the joint service information of the multiple users. The terminal firstly receives the PDCCH, descrambles the RNTI, confirms that the multi-user joint service information is sent to the terminal after the CRC is checked to be correct, and demodulates the PDSCH on corresponding resources after the DCI is obtained. Demodulating PDSCH according to MCS indicated in DCI to obtain group TBTB_GROUPjThen, first in the finite set TB_UEiBlind detection in length of 1, 2, 4 or 8 times, demodulation based on TB header information is attempted, and the user is confirmedWhen the information is available, the operation can be selected to obtain the TB belonging to the UE according to the descrambling of one segment of the same scrambling sequence_UEi. And when confirming that no information of the user exists according to the TB header information, finishing receiving and waiting for next multi-user receiving.

In step 503, the terminal feeds back the correct/incorrect information. Receiving the users in the group of multi-user joint transmission, and checking the TBTB_GROUPjThe following 16-bit CRC determines for the first time whether the reception is correct or incorrect. When error is checked, each user in the group is respectively corresponding to TB_UEiThe following 8-bit crc determines the reception is correct or incorrect for the second time. And at the moment, each user receiving data in the group carries out ACK/ANCK information feedback, ACK/NACK information is fed back through a PUCCH, and the position of the PUCCH logical channel used for multi-user transmission is obtained through high-level signaling.

Example 4

Step 501, the base station sends the joint service information of multiple users. The base station combines the TBs of a plurality of users to form a group of TBs, and the group of TBs is loaded on a PDSCH and scheduled through a PDCCH or an EPDCCH. The PDCCH is scrambled by a group RNTI, the value of the PDCCH is FFFC, and only users in the group can demodulate the PDCCH. Each user-specific TB is included in the group TB. Each TB_UEiThe lengths are the same. And the group TB is supplemented with 0 to meet the TB size specified by the LTE/LTE-A system, and if the group TB is just suitable, the group TB is not supplemented with 0. Group TBTB_GROUPjThe addition of 24-bit CRC check bits is performed after the generation. Optional operation, each TB_UEiDifferent segments of the same scrambling sequence are used for scrambling. And after channel coding, adjusting the channel to a PDSCH channel indicated by PDCCH or EPDCCH scheduling.

Step 502, the terminal receives the joint service information of the multiple users. The terminal firstly receives the PDCCH, descrambles the RNTI, confirms that the multi-user joint service information is sent to the terminal after the CRC is checked to be correct, and demodulates the PDSCH on corresponding resources after the DCI is obtained. Demodulating PDSCH according to MCS indicated in DCI to obtain group TBTB_GROUPjThen, the TB sequences are obtained according to the same length_UEiOptionally, the operation is to obtain TB belonging to the UE according to descrambling of one segment of the same scrambling sequence_UEi。

In step 503, the terminal feeds back the correct/incorrect information. Receiving the users in the group of multi-user joint transmission, and checking the TBTB_GROUPjThe following 24bit CRC determines whether the reception is correct or incorrect. And at the moment, each user with NACK check result in the group feeds back, and NACK information is fed back through a PUCCH. And the result after the verification of other users is ACK, so that no feedback is carried out.

Step 504, after receiving the feedback information, the base station ends the transmission or performs the transmission of the multi-user combined service information again. And the base station obtains NACK information by receiving the PUCCH channel, and when the feedback information is not received, the multi-user joint transmission is confirmed to be correct, and the process is finished. When the information is NACK information, the first-transmitted group TB data needs to be repeatedly transmitted, and the same RV version is used for retransmission.

Through the preferred embodiment, the service data of a plurality of users can be simultaneously and intensively transmitted, the control channel overhead is saved, only NACK information is fed back during feedback, and the reliability of the feedback is ensured and the feedback overhead is saved. And ensuring normal communication of each user in the same group by a multi-user joint transmission method.

Example 5

Before the following steps, the base station configures group information, notifies the group information to the terminal in the cell, and notifies the group information to the terminal through RRC signaling, wherein the group information includes the serial number of the terminal in the group.

Step 501, the base station sends the joint service information of multiple users. The base station combines the TBs of a plurality of users to form a group of TBs, and the group of TBs is loaded on a PDSCH and scheduled through a PDCCH or an EPDCCH. The PDCCH is scrambled by a group RNTI, the value of the PDCCH is FFFC, and only users in the group can demodulate the PDCCH. The group TB includes a total TB header, a TB subheader, and each user-specific TB. The TB header is used to identify user information in the group, and the TB subheader is used to indicate the TB_UEiThe type of service of (2). This multi-user group, e.g. scheduled by the base station, has 10 UEs, TBs_{head j}Allocation of 10 bits "1001011111" indicates the next 7 TBs_UEiIs the data of the 1 st, 4 th, 6 th, 7 th, 8 th, 9 th, 10 th UEs within the group. Each TB_UEiSame length, TB sub-header 1bit, and TB_{head j}And adopting a predefined length value, namely the number of users of the multi-user group. And the group TB is supplemented with 0 to meet the TB size specified by the LTE/LTE-A system, and if the group TB is just suitable, the group TB is not supplemented with 0. Group TBTB_GROUPjThe addition of 24-bit CRC check bits is performed after the generation. Optional operation of eachTB_UEiDifferent segments of the same scrambling sequence are used for scrambling. And after channel coding, adjusting the channel to a PDSCH channel indicated by PDCCH or EPDCCH scheduling.

Step 502, the terminal receives the joint service information of the multiple users. The terminal firstly receives the PDCCH, descrambles the RNTI, confirms that the multi-user joint service information is sent to the terminal after the CRC is checked to be correct, and demodulates the PDSCH on corresponding resources after the DCI is obtained. Demodulating PDSCH according to MCS indicated in DCI to obtain group TBTB_GROUPjThen, first according to TB_{head j}Determining the length of a TB header, and optionally descrambling one of the segments of the same scrambling sequence to obtain a TB subheader and a TB belonging to the UE when the information of the user is confirmed according to the TB header information_UEi. And when confirming that no information of the user exists according to the TB header information, finishing receiving and waiting for next multi-user receiving.

Through the preferred embodiment, the service data of different service types of a plurality of users can be transmitted in a centralized manner, the control channel overhead is saved, and the normal communication of each user in the same group is ensured through a multi-user combined transmission method.

Example 6

Step 501, the base station sends the joint service information of multiple users. The base station combines the TBs of a plurality of users to form a group of TBs, and the group of TBs are carried on the PDSCH and are not scheduled through the PDCCH or the EPDCCH. The group TB includes a TB header and user-specific TBs. The TB header is used to identify user information within the group. This multi-user group, e.g. scheduled by the base station, has 5 UEs, TBs_{head j}Allocating 5 bits "10111" to indicate the following 4 TBs_UEiIs the data of the 1 st, 3 rd, 4 th, 5 th UEs within the group. Each TB_UEiAre of the same length and TB_{head j}And adopting a predefined length value, namely the number of users of the multi-user group. And the group TB is supplemented with 0 to meet the TB size specified by the LTE/LTE-A system, and if the group TB is just suitable, the group TB is not supplemented with 0. Group TBTB_GROUPjAfter generation, 16-bit CRC check bits are added, and the CRC check bits are scrambled by the group RNTI, which is set to FFF4, and only the users in the group can demodulate the PDSCH. 4 TB_UEiThe addition of CRC check bits of 8 bits is performed, respectively. Optional operation, each TB_UEiDifferent segments of the same scrambling sequence are used for scrambling. And carrying out channel coding and then modulating the coded signals to a PDSCH channel with a fixed position. The period M =80ms and the frequency domain position are each composed of one PRB on both sides of the band, and the QPSK modulation scheme is used for the fixed use.

Step 502, the terminal receives the joint service information of the multiple users. And the terminal receives the PDSCH of the bearer group TB at a fixed frequency domain position according to the period M, descrambles the RNTI, and confirms that the information is the multi-user combined service information sent to the terminal after the CRC is checked correctly. Demodulating PDSCH to obtain a group TBTB_GROUPjThen, first according to TB_{head j}Determining the length of a TB header, and optionally descrambling one of the segments of the same scrambling sequence to obtain the TB belonging to the UE when the information of the user is confirmed according to the TB header information_UEi. And when confirming that no information of the user exists according to the TB header information, finishing receiving and waiting for next multi-user receiving.

In step 503, the terminal feeds back the correct/incorrect information. Receiving the users in the group of multi-user joint transmission, and checking the TBTB_GROUPjThe following 16-bit CRC determines for the first time whether the reception is correct or incorrect. When error is checked, each user in the group is respectively corresponding to TB_UEiThe following 8-bit crc determines the reception is correct or incorrect for the second time. At this time, each user receiving data in the group carries out ACK/ANCK information feedback, ACK/NACK information is fed back through a PUCCH, and the position of the PUCCH of the user is obtained through high-level signaling and the number in the group.

Through the preferred embodiment, the service data of a plurality of users can be transmitted in a centralized way, meanwhile, a control channel is not used for scheduling indication, the control channel overhead is further saved, and the normal communication of each user in the same group is ensured through a multi-user combined transmission method.

An embodiment of the present invention further provides a base station, as shown in fig. 6, where the base station includes: a setting module 601 and a sending module 602; wherein,

the setting module 601 is configured to combine the transport blocks TB of multiple user equipments UE to form a group TB;

the sending module 602, configured to carry the group TB on a PDSCH;

Preferably, the sending module 602 is further configured to perform scheduling through a PDCCH or an EPDCCH after the group TB is carried on the PDSCH; or,

for directly transmitting a PDSCH carrying the group TB.

Preferably, the sending module 602 is further configured to configure group information and notify the UE of the group information in a cell, where the group information at least includes one of: group RNTI, serial number of UE in the group.

Preferably, the setting module 601 is further configured to adopt an operation of supplementing 0bit to the size of the group TB, and at least includes one of the following manners:

0 is added to the TB head and the group TB.

Preferably, the setting module 601 is further configured to add CRC check bits after the group TB is generated, and at least one of the following modes is included:

adding CRC (cyclic redundancy check) bits of Kbit to the group TB, and adding CRC check information of Jbit to the TB of each UE, wherein K is 16 or 24, and J is 8 or 16.

Preferably, the base station further includes: a receiving module 603, configured to receive correct or incorrect feedback information from the UE after performing CRC check on the group TB, where the correct or incorrect feedback information is fed back by one UE in the group;

Preferably, the base station further includes: a receiving module 603, configured to receive error feedback information from the UE after performing CRC check on the group TB, where the error feedback information is fed back by each UE that checks an error in the group, and at this time, each UE in the group uses the same PUCCH resource.

Preferably, the base station further includes: a receiving module 603, configured to receive ACK/NACK feedback information obtained by CRC checking, from the UE, a TB of each UE, where each UE in the group uses a group PUCCH resource.

The base station further comprises: the receiving module 603 is configured to notify the sending module to retransmit the group TB after receiving the NACK feedback information of the group TB, where the TBs of the UEs use the same redundancy version RV at this time.

Preferably, the base station further includes: the receiving module 603 is configured to, after receiving NACK feedback information of TBs of UEs, form a new group of TBs from all the TBs of UEs that feed back the NACK feedback information, and send the new group of TBs to the sending module for retransmission, where the TBs of the UEs use the same RV.

An embodiment of the present invention further provides a terminal, as shown in fig. 7, where the terminal includes: a receiving module 701, configured to receive a group TB carrying multiple UE service information, where the group TB is carried on a PDSCH;

Preferably, the receiving module 701 is further configured to receive group information notified by a base station, where the group information at least includes one of: group RNTI, serial number of UE in the group.

Preferably, the receiving module 701 is further configured to determine a TB header according to the length of the TB of each UE after receiving the PDSCH to obtain a group TB, and then obtain the TBs belonging to each UE according to the TB header information.

Preferably, the receiving module 701 is further configured to perform a CRC check after receiving the group TB, where the CRC check at least includes one of the following manners:

performing CRC check of Kbit on the group TB, and performing CRC check of Jbit on the TB of the UE, wherein K is 16 or 24, and J is 8 or 16.

Preferably, the receiving module 701 is further configured to receive the PDSCH carrying the group TB on a fixed time-frequency resource.

Preferably, the terminal further includes a sending module 702, configured to feed back information of correct or incorrect reception after the receiving module 701 performs CRC check on the group TB, where the information of correct or incorrect reception is fed back by one UE in the group;

Preferably, the terminal further includes a sending module 702, configured to feed back information of a reception error after the receiving module 701 performs CRC check on the group TB, where the information of the reception error is fed back by each UE that performs check on the error in the group, and at this time, each UE in the group uses the same PUCCH resource.

Preferably, the terminal further includes a sending module 702, configured to feed back ACK/NACK feedback information after the receiving module 701 performs CRC check on the TB of each UE, where each UE in the group uses a group PUCCH resource.

Preferably, the terminal further includes a sending module 702, configured to feed back NACK information of the group TB, and then notify the receiving module 701 to re-receive the group TB, where the TBs of the UEs use the same RV.

Preferably, the terminal further includes a sending module 702, configured to feed back NACK information of TBs of UEs, and then notify the receiving module 701 to receive a new group TB, where the TBs of the UEs use the same RV.

An embodiment of the present invention further provides a system, as shown in fig. 8, the system includes: the base station of fig. 6 and the terminal of fig. 7.

It can be seen from the foregoing embodiments that, the machine type communication methods provided by the foregoing embodiments, preferred embodiments, and preferred embodiments of the present invention solve the technical problems of reducing control overhead when a large number of users exist and have small service packets in an LTE system, so as to implement scheduling and indicating transmission of a large number of user data in limited control channel resources on a network side, and ensure normal communication of such terminals. By adopting the technical scheme of the invention, the control information overhead in an LTE system can be reduced, the user information transmission efficiency is improved, the control blocking probability under the environment with a large number of machine type terminals is reduced, and the normal communication of terminal equipment is ensured.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A method for transmitting machine type communication service information is characterized in that the method comprises the following steps:

after bearing a group TB on a PDSCH, a base station carries out scheduling through a PDCCH or an EPDCCH, or directly sends the PDSCH bearing the group TB;

2. The method of claim 1, further comprising:

the base station configures group information and notifies the group information to the UE in a cell, wherein the group information at least comprises one of the following information: group RNTI, serial number of UE in the group.

3. The method of claim 1, wherein the base station combines the TBs of the UEs, comprising:

the base station combines the TBs of the UEs in the same group, segments the TBs using the same length, and adds a total TB header and/or a TB subheader before the TB combination.

4. The method according to any of claims 1-3, wherein the length of the TB header is a fixed length, the fixed length being the same as the TB length value of each UE, or a predefined length value.

5. The method of any of claims 1-3, wherein the length of the TB header is a variable length, and wherein the variable length value is an integer multiple of the TB length of each UE.

6. The method of claim 5, wherein the variable length value is 1, 2, 4, or 8 times a TB length of each UE.

7. A method according to any of claims 1-3, characterized in that the method further comprises:

the base station adopts the operation of supplementing 0bit to the size of the group TB, and at least comprises one of the following modes:

0 is added to the TB head and the group TB.

8. The method according to any of claims 1-3, wherein in the group of TBs, the TB header contains information that distinguishes each UE, and the TB of each UE is service information sent by a base station to each UE;

wherein the TB header information comprises at least one of: indicating the type of the TB of the group and indicating the attribution of the TB of each UE; the TBs of each UE are scrambled with a different scrambling sequence.

9. A method according to any of claims 1-3, characterized in that the method further comprises: the base station adds CRC check bits after the generation of the group TB, and the method at least comprises one of the following modes:

10. The method of claim 1, wherein the PDCCH scheduling the PDSCH carrying the group TB is scrambled by a group RNTI.

11. The method according to any of claims 1-3, wherein the PDSCH carrying the group TB is sent on fixed time-frequency resources.

12. The method of claim 11, wherein the PDSCH carrying the group TB is transmitted on fixed time-frequency resources, comprising:

the PDSCH is transmitted in a time domain by taking a period M as a unit, is fixedly transmitted in a frequency domain by using k PRBs at the center of a frequency band or at two sides of the frequency band, adopts a fixed modulation mode, and scrambles CRC of the group TB by using the group RNTI.

13. The method of claim 9, further comprising:

the base station receives correct or wrong feedback information from the UE after CRC check on the group TB, and the correct or wrong feedback information is fed back by one UE in the group;

14. The method of claim 9, further comprising:

and the base station receives error feedback information from the UE after CRC check on the group TB, the error feedback information is fed back by each UE which checks errors in the group, and at the moment, each UE in the group uses the same PUCCH resource.

15. The method of claim 9, further comprising:

and the base station receives ACK/NACK feedback information after CRC check of the TB of each UE from the UE, and each UE in the group uses the PUCCH resource of the group at the moment.

16. The method of claim 9, further comprising:

after receiving the NACK feedback information of the group TB, the base station needs to retransmit the group TB, and at this time, the TBs of the UEs use the same redundancy version RV.

17. The method of claim 9, further comprising:

and after receiving the NACK feedback information of the TBs of the UE, the base station retransmits the TBs of all the UE which feed back the NACK feedback information after forming a new group of TBs, wherein the TBs of all the UE use the same RV.

18. A method for transmitting machine type communication service information is characterized in that the method comprises the following steps:

wherein the UE receiving a group TB comprises: each UE in the group shares the same DCI Format and RNTI, each UE detects the PDCCH or the EPDCCH in the same search space, and determines the position of the PDSCH bearing the group TB according to the information of the PDCCH or the EPDCCH; or, directly receiving a PDSCH carrying a group TB;

the group TB includes: each UE has a TB and/or TB header exclusively; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the user terminals in the group or the service type of the group TB.

19. The method of claim 18, further comprising:

the UE receives group information notified by a base station, the group information including at least one of: group RNTI, serial number of UE in the group.

20. The method of claim 18, wherein the PDCCH scheduling the PDSCH carrying the group TB is scrambled by a group RNTI.

21. The method of claim 18, further comprising:

after the UE receives the PDSCH to obtain a group TB, determining a TB header according to the length of the TB of each UE, and then obtaining the TB belonging to each UE according to the TB header information.

22. The method of claim 18, wherein in the group TB, a TB header contains information for distinguishing each UE, and the TB of each UE is service information of each UE;

wherein the TB header information comprises at least one of: indicating the type of the TB of the group and indicating the attribution of the TB of each UE.

23. The method of claim 18, wherein the UE receives a group TB carrying a plurality of UE traffic information, comprising:

the UE receives a group TB which is the same as the UE as a group of users, and the group TB uses the same length for segmentation; alternatively, the group of TBs are segmented using the same length and there is a total TB header and/or a TB subheader before TB combining.

24. The method according to any of claims 18-23, wherein the TB header length is a fixed length, wherein the fixed length value is the same as the TB length of each UE, or wherein a predefined length value is used.

25. The method of any of claims 18-23, wherein the TB header length is of variable length, and wherein the variable length value is an integer multiple of the TB length of each UE.

26. The method according to any one of claims 18-23, further comprising:

performing CRC check after the UE receives the group TB, wherein the CRC check at least comprises one of the following modes:

27. The method according to any one of claims 18-23, further comprising:

the UE in the group receives PDSCH carrying the group TB on fixed time-frequency resources.

28. The method of claim 27, wherein the UE receives the PDSCH on fixed time-frequency resources, comprising:

29. The method of claim 26, further comprising:

after the UE performs CRC on the group TB, feeding back information which is received correctly or incorrectly, wherein the information which is received correctly or incorrectly is fed back by one UE in the group;

30. The method of claim 26, further comprising:

and after the UE performs CRC on the group TB, feeding back the information of the receiving error, wherein the information of the receiving error is fed back by each UE which performs CRC in the group, and at the moment, each UE in the group uses the same PUCCH resource.

31. The method of claim 26, further comprising:

and after CRC (cyclic redundancy check) is carried out on the TB of each UE by the UE, feeding back ACK/NACK (acknowledgement/negative acknowledgement) feedback information, wherein each UE in the group uses the PUCCH (physical uplink control channel) resource of the group.

32. The method of claim 26, further comprising:

and after the UE feeds back the NACK information of the group TB, the group TB is received again, and the TB of each UE uses the same RV.

33. The method of claim 26, further comprising:

after the UE feeds back NACK information of the TBs of the UE, the UE receives a new group TB, and at this time, the TBs of the UEs use the same RV.

34. A method for transmitting machine type communication service information is characterized in that the method comprises the following steps:

the UE receives the group TB carried on the PDSCH;

wherein after the base station carries a group TB on the PDSCH, the method further comprises: scheduling the PDSCH carrying the group TB through the PDCCH or the EPDCCH, or directly sending the PDSCH carrying the group TB by the base station; accordingly, the UE receiving the group TB carried on PDSCH includes: each UE in the group shares the same DCI Format and RNTI, each UE detects the PDCCH or the EPDCCH in the same search space, and determines the position of the PDSCH bearing the group TB according to the information of the PDCCH or the EPDCCH, or the UE directly receives the PDSCH bearing the group TB from the base station;

the group TB includes: each UE has a TB and/or TB header exclusively; the TB head at least comprises one of the following components: a total TB header and a TB subheader, wherein the TB header is used for identifying the service information of the UE in the group or the service type of the TB in the group.

35. A base station, comprising: the device comprises a setting module and a sending module; wherein,

the sending module is configured to carry the group TB on a PDSCH, and schedule the group TB through a PDCCH or an EPDCCH, or directly send the PDSCH carrying the group TB;

36. The base station of claim 35, wherein the sending module is further configured to configure group information and notify the UE of the group information in a cell, and the group information at least includes one of the following: group RNTI, serial number of UE in the group.

37. The base station of any of claims 35 to 36, wherein the setting module is further configured to perform an operation of supplementing 0bit for the size of the group TB, and at least one of the following manners is included:

0 is added to the TB head and the group TB.

38. The base station according to any of claims 35-36, wherein the setting module is further configured to perform CRC check bit addition after group TB generation, and the CRC check bit addition comprises at least one of:

39. The base station of claim 38, wherein the base station further comprises: a receiving module, configured to receive correct or incorrect feedback information from a UE after performing CRC check on a group TB, where the correct or incorrect feedback information is fed back by one UE in the group;

40. The base station of claim 38, wherein the base station further comprises: and the receiving module is used for receiving error feedback information from the UE after CRC check on the group TB, the error feedback information is fed back by each UE which checks errors in the group, and at the moment, each UE in the group uses the same PUCCH resource.

41. The base station of claim 38, wherein the base station further comprises: and the receiving module is used for receiving ACK/NACK feedback information after CRC check of the TB of each UE from the UE, and each UE in the group uses the PUCCH resource of the group at the moment.

42. The base station of claim 38, wherein the base station further comprises: and the receiving module is used for informing the sending module to retransmit the group TB after receiving the NACK feedback information of the group TB, and the TB of each UE uses the same redundancy version RV at the moment.

43. The base station of claim 38, wherein the base station further comprises: and the receiving module is used for forming a new group TB from the TBs of all the UEs feeding the NACK feedback information after receiving the NACK feedback information of the TBs of the UEs and then sending the new group TB to the sending module for retransmission, wherein the TBs of all the UEs use the same RV at the moment.

44. A terminal, characterized in that the terminal comprises: a receiving module, configured to receive a group TB carrying multiple UE service information, where the group TB is carried on a PDSCH;

the receiving module is specifically configured to receive group information notified by the base station, determine, according to the group information, a location of a PDSCH carrying the group TB, and receive the PDSCH carrying the group TB, or directly receive the PDSCH carrying the group TB;

45. The terminal of claim 44, wherein the receiving module is further configured to receive group information notified by the base station, and the group information includes at least one of: group RNTI, serial number of UE in the group.

46. The terminal of claim 44, wherein the receiving module is further configured to determine a TB header according to the length of the TB of each UE after receiving the PDSCH to obtain a group TB, and then obtain the TB belonging to each UE according to the TB header information.

47. The terminal of any one of claims 44-46, wherein the receiving module is further configured to perform a CRC check after receiving a group TB, wherein the CRC check at least comprises one of the following ways:

48. The terminal of any one of claims 44-46, wherein the receiving module is further configured to receive the PDSCH carrying the group TB on fixed time-frequency resources.

49. The terminal of claim 48, wherein the terminal further comprises a sending module, configured to feed back information about correct or incorrect reception after the receiving module performs CRC check on the group TB, and the information about correct or incorrect reception is fed back by one UE in the group;

50. The terminal of claim 48, wherein the terminal further comprises a sending module, configured to feed back information of a reception error after the receiving module performs CRC check on the group TB, and the information of the reception error is fed back by each UE that performs check on the error in the group, where each UE in the group uses the same PUCCH resource.

51. The terminal of claim 48, further comprising a sending module, configured to feed back ACK/NACK feedback information after the receiving module performs CRC check on the TB of each UE, where each UE in the group uses a group PUCCH resource.

52. The terminal of claim 48, wherein the terminal further comprises a sending module, configured to feed back NACK information of the group TBs, and then notify the receiving module to re-receive the group TBs, where the TBs of the UEs use the same RV.

53. The terminal of claim 48, wherein the terminal further comprises a sending module, configured to feed back NACK information of the TBs of the UEs, and then notify the receiving module to receive a new group TB, where the TBs of the UEs use the same RV.

54. A system for transmitting machine type communication service information, the system comprising: the base station of any of claims 35-43 and the terminal of any of claims 44-53.