WO2013123844A1

WO2013123844A1 - Method, terminal, and base station for multi-terminal competition conflict resolution

Info

Publication number: WO2013123844A1
Application number: PCT/CN2013/071071
Authority: WO
Inventors: 房明; 陈亮; 舒兵
Original assignee: 华为技术有限公司
Priority date: 2012-02-22
Filing date: 2013-01-29
Publication date: 2013-08-29
Also published as: CN103298134B; CN103298134A

Abstract

Disclosed are a method, terminal, and base station for multi-terminal competition conflict resolution. The method for multi-terminal competition conflict resolution comprises: transmitting to the base station an uplink radio block comprising a random temporary logical link identifier (TLLI) of a current terminal; receiving a downlink radio block transmitted by the base station, wherein the downlink radio block carries random TLLIs and temporary flow identities (TFI) corresponding to at least two terminals, and where the random TLLIs and the TFIs corresponding to the at least two terminals comprise the random TLLI and the TFI for the current terminal; parsing the downlink radio block, and, when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI transmitted to the base station by the current terminal, determining that the competition conflict of the current terminal is resolved. The solution provided on the basis of embodiments of the present invention effectively conserves downlink resources and increases communication efficiency.

Description

Multi-terminal competition conflict resolution method, terminal and base station This application is submitted to the Chinese Patent Office on February 22, 2012, and the application number is

201210040604.X, entitled "Multi-Terminal Conflict Resolution Method, Terminal and Base Station", the priority of the Chinese patent application, the entire contents of which is incorporated herein by reference. Technical field

[01] The present invention relates to the field of communications technologies, and in particular, to a multi-terminal contention conflict resolution method, a terminal, and a base station.

Background technique

[02] With the increasing variety of applications for packet services, there has been an application that is characterized by frequent small data transfers, such as those found in Machine to Machine (M2M) and smartphones. In such applications, the amount of data transferred between the client and the server is small, but this interactive transmission is frequent.

[03] In the GSM EDGE Radio Acesss Network (GERAN), packet data transmission is achieved through Temporary Block Flow (TBF). The Temporary Block Flow TBF is a temporary connection between a Mobile Station (MS) and the network. During the data transmission, the network establishes this temporary logical link in the air interface by assigning a message. When the terminal needs to send uplink data, the terminal needs to establish an uplink TBF to implement uplink data transmission by means of one-step access or two-step access or short access. Through the uplink TBF established by the one-step access and the two-step access, the network can dynamically send the Uplink State Flag (USF) to schedule the transmission of the uplink packet data. Through the two-step access and the short access, the network can The uplink packet data is transmitted by the terminal by reserving one or more uplink block resources.

[04] However, whether it is one-step access, two-step access or short access, the competition conflict detection is completed. Only after the conflict resolution is completed, the terminal can successfully establish the uplink TBF and enter the packet transmission mode to transmit data.

[05] In the one-step access mode, after receiving the Immediate Assignment message, the terminal transmits the first uplink radio link control (Radio Link Control, on the Packet Data Channel (PDCH). RLC) At the beginning of the data block, each uplink RLC data block sent will contain a Temporary Logical Link Identifier (TLLI), and the packet uplink response negative response (Packet Uplink) is received until the corresponding random TLLI of the network reply is received. Ack/Nack, PUAN) message, After the two random TLLIs are matched, it is determined that the contention conflict resolution is completed, and then the uplink RLC block sent by the terminal does not need to carry the uplink TLLI. In the multi-block allocation of short access, the process of terminal contention conflict resolution is the same as the one-step access procedure.

[06] In the two-step access mode, after receiving the immediate assignment, the terminal sends an uplink single block, which includes a Packet Resource Request (PRR) message, where the message includes a random TLLI. The network sends a uplink TBF assignment message in response to the PRR message, the uplink packet assignment message containing a corresponding random TLLI. The terminal detects two random TLLI matches before determining that the contention conflict resolution is complete.

[07] After receiving the Immediate Assignment message, the terminal sends the first upstream block to contain the random TLLI, and each upstream block before the contention resolution is completed contains the random TLLI. Because carrying a 4-byte long random TLLI in the RLC data block in the one-step access mode reduces the amount of information about the payload of the valid data payload carried by the RLC/MAC data block, the network needs to resolve the conflict problem as soon as possible, and only after the contention conflict resolution is completed, The uplink data block sent by the terminal will not carry the random TLLI. Therefore, in most cases, the network receives the first RLC data block and sends the PUAN immediately, and contains the random TLLI carried by the target terminal to resolve the contention conflict, and usually ensures that the target terminal correctly receives the PUAN containing the random TLLI sent by the network. The message will continuously send multiple PUAN messages, further consuming downlink radio resources. A similar problem exists in the two-step access method. Therefore, the conflict resolution process consumes a large amount of downlink resources for transmitting PUAN messages, which results in low utilization of radio resources.

Summary of the invention

In the embodiment of the present invention, a multi-terminal contention conflict resolution method, device, and system are provided to solve the problem of consuming a large amount of downlink resources when solving a competition conflict in the prior art.

On the one hand, the embodiment of the present invention provides a multi-terminal contention conflict resolution method, including: sending an uplink radio block including a random temporary logical link identifier TLLI of a current terminal to a base station; and receiving a downlink radio block sent by the base station. The downlink radio block carries a random TLLI and a temporary block stream indication TFI corresponding to at least two terminals, and the random TLLI and the temporary block stream corresponding to the at least two terminals indicate that the TFI includes a random TLLI and a temporary block for the current terminal. The flow indication TFI; parsing the downlink radio block, when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal to the base station, determining a contention conflict resolution of the current terminal.

On the other hand, the embodiment of the present invention provides a multi-terminal contention conflict resolution method, including: receiving an uplink radio block including a random TLLI of the terminal; and transmitting the downlink radio block to the terminal, where the downlink radio block carries The random TLLI and the temporary block flow corresponding to the at least two terminals indicate the TFI, and the at least two terminals correspond to the random The TLLI and the temporary block flow indication TFI include a random TLLI and a temporary block flow indication TFI for the current terminal, such that when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal, the current The terminal determines its own competitive conflict resolution.

On the other hand, an embodiment of the present invention provides a terminal, including: a sending unit, configured to send an uplink radio block including a random temporary logical link identifier TLLI of a current terminal to a base station; and a receiving unit, configured to receive a downlink radio block that is sent by the base station, where the downlink radio block carries a random TLLI and a temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream indication corresponding to the at least two terminals are included in the TFI for the current terminal. a random TLLI and a temporary block flow indicating TFI; and a parsing unit, configured to parse the downlink radio block, when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal to the base station , to determine the current terminal's competition conflict resolution.

[12] On the other hand, an embodiment of the present invention provides a base station, including: an uplink radio block for receiving a random TLLI including a terminal; and a sending unit, configured to send the downlink radio block to the terminal, where the downlink The radio block carries the random TLLI and the temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream indication corresponding to the at least two terminals include a random TLLI and a temporary block flow indication TFI for the current terminal, such that When the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal, the current terminal determines its own contention conflict resolution.

[13] According to the solution provided by the embodiment of the present invention, a random TLLI and a temporary block flow indication TFI for multiple terminals are transmitted through a small number of downlink radio blocks to resolve a contention conflict, thereby effectively saving downlink resources and improving Communication efficiency.

DRAWINGS

[14] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only Some embodiments of the invention may be obtained by those of ordinary skill in the art from the drawings without departing from the scope of the invention.

[15] FIG. 1 illustrates a multi-terminal contention conflict resolution method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram showing a communication process between a terminal and a base station according to an embodiment of the present invention; FIG.

FIG. 3 is a flowchart of a multi-terminal contention conflict resolution method according to another embodiment of the present invention; FIG. FIG. 4 is a flowchart showing a multi-terminal contention conflict resolution method according to an embodiment of the present invention; [19] FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention; and [20] FIG. 6 shows a schematic structural diagram of a base station according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 illustrates a multi-terminal contention conflict resolution method according to an embodiment of the present invention. It can be seen that the method comprises the following steps:

[22] Step 110: Send an uplink radio block that includes the random temporary logical link identifier TLLI of the current terminal to the base station. Here, the specific type of the uplink radio block is not limited, and may be, for example, an uplink data block or an uplink control block (for example, an uplink control message). The uplink radio block transmits the information of the current terminal for resolving the contention conflict, that is, the random TLLI to the base station.

[24] Step 120: Receive a downlink radio block sent by the base station, where the downlink radio block carries a random TLLI corresponding to at least two terminals and a temporary block stream indication TFI, and the at least two terminals correspond to a random TLLI and a temporary block stream. The indication TFI includes a random TLLI for the current terminal and a temporary block flow indication TFI.

[25] After the base station receives the uplink radio block sent by the terminal in step 110, in order to resolve the contention conflict, the downlink radio block for resolving the contention conflict needs to be sent to the terminal. As mentioned in the background section above, if the corresponding downlink radio block is sent separately for each terminal, a large amount of downlink resources are consumed. Therefore, in order to reduce the occupation of the downlink resources, in the embodiment of the present invention, the downlink radio block sent by the base station carries the random TLLI and the temporary block stream indication TFI corresponding to the at least two terminals, for example, the TLLI 1 and the TFI 1 for the terminal 1 And TLLI2 and TFI2 for terminal 2. The downlink radio block can be simultaneously transmitted by the base station to a plurality of terminals that have transmitted the uplink radio block to the base station. Correspondingly, the terminal receives the downlink radio block sent by the base station.

FIG. 2 is a schematic diagram showing a communication process between a terminal and a base station according to an embodiment of the present invention. It can be seen that the terminal 1 and the terminal 2 can respectively send the uplink radio block including the random TLLI to the base station, and after receiving the uplink radio block sent by the terminal, the base station sends the same downlink radio block to the terminal 1 and the terminal 2, where The downlink radio block carries a pin The information required to resolve the contention conflict between terminal 1 and terminal 2. For example, the downlink radio block carries a random TLLI 1 for the terminal 1 and a temporary block flow indication TFI 1, and a random TLLI2 and TFI2 for the terminal 2.

[27] According to an implementation form, the downlink radio block may further carry Ack/Nack response information, a starting sequence number (SSN) and a bit bitmap bitmap for the uplink radio block. The Ack/Nack response information is used to respond to whether the uplink radio block is correctly received. The SSN and bitmap are described in detail below.

[28] In addition, an uplink modulation coding command may be further included in the downlink radio block, so that the base station can modify the uplink modulation coding mode of the corresponding terminal by using the uplink modulation coding command to implement an optimal communication effect. It should be noted that, when the uplink modulation and coding command is included in the downlink radio block, the uplink modulation and coding command is not required to be sent to all the terminals, but may be delivered only to the terminal that needs to modify the uplink modulation and coding mode.

[29] Step 130: The downlink radio block is parsed. When the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal to the base station, the contention conflict resolution of the current terminal is determined. Specifically, the terminal determines whether the corresponding random TLLI is for the current terminal according to the TFI, and compares the corresponding random TLLI with the random TLLI of the current terminal. For example, the terminal 1 determines from the TFI 1 that the random TLLI 1 is for the current terminal 1, and accordingly compares the random TLLI 1 with its own TLLI 1. When the comparison result is a match, it is determined that the contention conflict of the terminal 1 is resolved.

[30] As can be seen from the above description, in the embodiment of the present invention, the random TLLI and the temporary block flow indication TFI for multiple terminals are transmitted through a small number of downlink radio blocks to resolve the contention conflict, thereby effectively saving downlink resources. , improve communication efficiency.

[31] According to an implementation form, the downlink radio block is a separately constructed message or a message obtained by extending an existing PACCH message, such as a packet uplink acknowledgement negative acknowledgement PUAN message. This will be described in detail below.

[32] A new message can be constructed as a downlink radio block to indicate the TLLI of the uplink TBF for multiple terminals.

[33] For example, a downstream radio block including the following message parameters can be constructed:

< PAGE MODE: bit (2) >

1{< UPLINK TFI: bit (5) >

< CONTENTION_RESOLUTION_TLLI : bit

(32) > _ _

{0 I 1 <SSN: bit (11)> }

<Bitmap: bit (8)>

}**0 [34] As can be seen above, the paging mode (PAGE MODE) occupies 2 bits, and the selection bit for the uplink TFI occupies 1 bit, and the part for the TFI (UPLINK_TFI) occupies 5 bits, the part for TLLI

(C0NTENTI0N_RES0LUTI0N_TLLI) occupies 32 bits, the selection bit for the Starting Sequence Number (SSN) occupies 1 bit, and the bit bitmap (bitmap) occupies 8 bits. It can be seen that the 2-bit PAGE MODE parameter and the 1-bit loop indication parameter are removed, and the remaining parameters occupy a total of 1+5+32+1+8=47 bits. Therefore, CS-1 encoded (176 bit) messages can support 3 terminals simultaneously

(47*3+2+1<176) The conflict of competition is resolved.

[35] In addition, the inventor noticed that the random TLLI used for collision resolution has a total of 32 bits, but in fact, only the 0-26 bits are used for the terminal to fill the random value, so the TLLI length can be compressed, that is, the TLLI is also The length of the parameter portion is reduced from 32 bits to 27 bits. Further, if the tolerance for collision probability is further increased, i.e., if more collisions can be allowed, the TLLI can be further compressed, for example, to 16 bits.

[36] Thus, a downlink radio block including the following message parameters can be designed:

< PAGE MODE: bit (2) >

1{< UPLINK TFI: bit (5) >

< CONTENTION_RESOLUTION_TLLI: bit (16) >

{ ~ ~

{0 I 1 <SSN: bit (11)>}

<Bitmap: bit (8)>

}**0

[37] It can be seen that the 2-bit PAGE MODE parameter and the 1-bit loop indication parameter are removed, and the remaining parameters occupy a total of 1+5+16+1+8=31 bits. Therefore, CS-1 encoded (176-bit) messages can simultaneously support contention resolution for 5 terminals (31*5+2+1<176).

[38] In addition, the network needs to resolve the conflict as soon as possible, so the reply message is answered from the beginning of the RLC window, that is, the serial number of the SSN is always 0. This can further omit the selection bit for the SSN, thereby omitting the SSNo. For example, it can be designed to omit the SSN as long as the PUAN containing the random TLLI, or the SSN if the PUAN without the random TLLI is included.

[39] Further, after the contention conflict is resolved, the network may need to adjust the modulation and coding mode of the uplink data block sent by the terminal that does not include the random TLLI. Therefore, in the constructed new downlink radio block, the uplink may also be set for each terminal. Modulation coding method. The modulation and coding mode is used to indicate which modulation coding method the terminal uses, such as one of MSC-1 to MSC-9, to transmit an uplink data block that does not include a random TLLI. < PAGE MODE: bit (2) >

1{< UPLINK TFI: bit (5) >

< CONTENTION_RESOLUTION_TLLI: bit (32) >

{ ~ ~

{0 I 1 <SSN: bit (11)>}

<Bitmap: bit (8)>

{0 I 1 < EGPRS—CHA 丽 EL CODING—SCHEME: bit (4) >

}**0

[40] It can be seen that the 2-bit PAGE MODE parameter and the 1-bit loop indication parameter are removed, and the remaining parameters occupy a total of 1+5+32+1+8+1+4=52 bits. Therefore, the CS-1 encoded (176-bit) message can simultaneously support the contention resolution of 3 terminals (52*3+2+1<176).

The compression of the parameters proposed above is merely exemplary, and those skilled in the art will readily appreciate that different degrees of compression can be performed according to actual needs. In addition, although in the above example, multiple TFI information, TLLI information and bitmap, EGPRS_CHANNEL_CODING_SCHEME are respectively designed together, those skilled in the art can easily think that the corresponding TFI information, TLLI information, bitmap and EGPRS_CHANNEL_CODING_SCHEME, this does not change the essence of the invention. In addition, the parameters designed for each terminal may be independent of each other, for example, only one bitmap may be set for one terminal, and only EGPRS_CHANNEL_CODING_SCHEME may be set for another terminal, which is within the scope of the embodiments of the present invention.

[42] Through the newly constructed downlink radio block described above, the random TLLI and the temporary block flow indication TFI for multiple terminals transmitted by a small number of downlink radio blocks are proposed to solve the contention conflict in the embodiment of the present invention. Therefore, the downlink resources are effectively saved and the communication efficiency is improved.

[43] Alternatively, the downlink radio block may be obtained by extending an existing message, such as a Packet Associated Control Channel (PACCH) control message, where the PACCH control message may be, for example, a packet uplink acknowledgement negation. The response PUAN message may also be a packet uplink temporary block flow assignment message to indicate the TLLI of the uplink TBF of the multiple terminals.

[44] The following exemplarily shows an extension of an existing PUAN message to obtain a message capable of supporting contention resolution resolution of a plurality of terminals. < PAGE MODE: bit (2) >

{ 00 < UPLINK TFI: bit (5) >

0 -message escape

|1 -message escape

{ 00 -message escape

I 01

<N_mobile: bit (2)>

< TFI: bit (5) > * (val(N_mobile) + 1)

< CONTENTION RESOLUTION TLLI: bit (32) > * (val(N_mobile) + 1) <bitmap: bit (8)> * (val(N_mobile) + 1)

{ 0|1 < EGPRS—CHA 丽 L CODING—SCHEME: bit (4) >}*(val(N mobile) + 1) _ _ _ _ _

< padding bits >

! < Non-distribution part error: bit (*) = <no string> > }

! < Message escape : { 10 | 11 } bit (*) = <no string> > } } ― Extended for future changes

! < Address information part error: bit (*) = <no string> > }

! < Distribution part error: bit (*) = <no string> >;

[45] In the extension of the existing PUAN message exemplarily cited above, the portion of the existing message extension is indicated by a bold font. Because the existing PUAN message is designed with four message escape message branches, respectively, four different parameter modules are indicated, and respectively indicated by 00, 01, 10, and 11, respectively, the current PUAN message only uses the branch of 00, and 01 The three branches of 10, 11 have not been used yet. It can be seen here that the extensible part "01" which has not been used in the prior art is utilized exemplarily, the "00" part has been used in the prior art, and the "10" and "11" parts are still reserved here. Possible extensions in the future.

[46] In the extension part, information including the number of terminals of 2 bits (N_mobil _e ), TFI information (TFI) of the corresponding number of terminals, and TLLI information (CONTENT 10N_RES0LUT 10N_TLL I ) bitmap information (bitmap). It should be noted that since the number of terminals N_mobil _{e is} calculated from 0, the corresponding number is N_mobil plus 1, that is, _Va l (N_mobil _e ) + 1. Therefore, in the case of supporting 3 terminals, the TFI information of each terminal is 5 bits, the TLLI information is 32 bits, the bitmap is 8 bits, and the EGPRS_CHANNEL_C0D I NG_SCHEME is 5 bits, for a total of 12+2+ (5 + 32 + 8 + 5) X 3 = 164 bits, wherein the choice bit is 12 bits, that is, the number of bits before the above "01" is reached according to the provisions of the existing PUAN message. "01" further takes up 2 bits. Therefore, the total is 164 bits. In the case of supporting 5 terminals, if the EGPRS_CHANNEL_CODING_SCHEME is not considered, the TLLI information is compressed, and the TFI information of each terminal occupies 5 bits, the TLLI information accounts for, for example, 16 bits, and the bitmap occupies 8 bits, for a total of 12+2+ (5) + 16 + 8 + 1 ) X 5=164 bits, if EGPRS_CHANNEL_CODING_SCHEME is considered, the TLLI information is compressed, the TFI information of each terminal occupies 5 bits, and the TLLI information is, for example, 16 bits, bitmap It occupies 8 bits and totals 12+2+ (5 + 16 + 8+5) X 4=150 bits. It can be seen that in both cases the total is less than the upper limit of 176 bits of the CS-1 code, which is achievable.

[47] Although in the above extension of the PUAN message, a plurality of TFI information, TLLI information and bitmap, EGPRS_CHANNEL_COD I NG_SCHEME are respectively designed together, those skilled in the art easily think that they can also be separately set for each terminal. Corresponding TFI information, TLLI information, bitmap and EGPRS_CHANNEL_COD I NG_SCHEME do not change the essence of the invention.

[48] And although the above example is an extension of the PUAN message, in fact, those skilled in the art can understand that the PACCH message sent by the network to the terminal, such as a packet resource assignment message (for example, a packet downlink TBF assignment, a packet uplink TBF assignment, etc.) Can be used to extend, to achieve this function.

FIG. 3 is a flow chart showing a multi-terminal contention conflict resolution method according to another embodiment of the present invention. It can be seen that, in the method, before the terminal sends the uplink radio block that includes the random temporary logical link identifier TLLI of the current terminal to the base station, the method further includes: Step 300: Information supporting the multi-terminal contention conflict resolution method is sent to the base station. Therefore, the network side can obtain the capability information of the terminal in advance, that is, whether the terminal supports the multi-terminal conflict resolution method, and correspondingly deliver the downlink radio block to the terminal having the capability. The terminal may transmit the information to the base station through an access request message, an uplink radio block of a random TLLI, or a separate uplink control message. That is, although the capability information is transmitted to the base station in step 300 in FIG. 3, and the uplink radio block including the random TLLI is transmitted to the base station in step 310, it is entirely possible to actually perform these two steps in actual work. The merging is performed by using the uplink radio block to simultaneously transmit the capability information of the terminal and the random TLLI, or using an uplink PACCH control message to send the terminal capability to the network. The embodiment of the present invention does not limit this, as long as the network side knows in advance. The capability information of the terminal can be. In addition, each terminal can select the desired mode by itself. For example, the terminal 1 may include its own capability information in an access request message and send it to the base station, and the terminal 2 may include its own capability message in a new uplink control message and send it to the base station, etc., The scope of the disclosure of the embodiments of the invention.

[00] The other steps 310, 320, and 330 in the flowchart of FIG. 3 are identical to those of 110, 120, and 130 in FIG. 1, and are not described herein again.

[51] In order to further improve the number of terminals capable of resolving the contention conflict, the base station may divide one logical subchannel into two independent channels, that is, transmit two different information through two different training sequences in one radio block period, and the terminal The logical channel can be decoded using one of the predetermined training sequences to solve the information corresponding to the training sequence. In this way, the information transmitted in one radio block period can be doubled, that is, the two independent channels can simultaneously deliver multi-terminal contention resolution messages, so that the number of supporting terminals can also be doubled. [52] When a logically independent two-channel channel is used to deliver a multi-terminal contention conflict resolution message, the training sequence used by the terminal may be specified, and the terminal may decode the corresponding information on the corresponding logical channel, or may not specify the terminal to use. Which of the two training sequences is trained, but the terminal is required to perform busy detection, that is, the terminal needs to use two training sequences to decode the information of the same block period to determine which way contains its own contention resolution information.

[53] Due to the use of blind detection, the terminal needs to consume more power and computing resources. In order to minimize the consumption of computing resources and power of the terminal, the terminal can only be required to detect two channels during the conflict resolution process, that is, the terminal competes. Before the conflict resolution is completed, two channels are decoded, and after the conflict is completed, only one way can be decoded. Specifically, the terminal starts to perform busy detection on the two channels starting from the first uplink data block containing the random TLLI, and stops the two downlinks until the corresponding random TLLI sent by the network is received. Busy detection. In this way, the power consumption of the terminal and the consumption of computing resources are not increased, and the number of terminals supporting the conflict resolution is further improved.

[54] In practice, it is entirely possible to use more training sequences to divide a logical subchannel into more independent logical subchannels. The principle is exactly the same, and will not be described here.

Accordingly, according to an embodiment of the present invention, a multi-terminal competition conflict resolution method is also proposed from the network side. FIG. 4 is a flow chart showing a multi-terminal contention conflict resolution method according to an embodiment of the present invention. As can be seen, the method comprises the following steps:

[56] Step 410: Receive an uplink radio block including a random TLLI of the terminal.

[57] Step 420: Send the downlink radio block to the terminal, where the downlink radio block carries the random TLLI and the temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream corresponding to the at least two terminals Instructing the TFI to include a random TLLI and a temporary block flow indication TFI for the current terminal, such that when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal, the current terminal determines its own contention. Conflict resolution.

According to an implementation form, the method further includes: receiving information of whether the terminal supports the multi-terminal contention conflict resolution method, and determining whether to send the downlink radio block to the current terminal based on the information. This step may be performed prior to step 410 or concurrently with step 410. The information may be, for example, that the terminal transmits to the base station through an access request message, an uplink radio block of the random TLLI, or a separate uplink control message.

According to an implementation form, the downlink radio block is a separately constructed message or a message obtained by extending a packet uplink acknowledgement negative acknowledgement PUAN message. [0] According to an implementation form, sending the downlink radio block to the terminal specifically includes: sending the downlink radio block to and from the at least two independent logical subchannels by using different training sequences.

According to an implementation form, the downlink radio block further carries Ack/Nack response information, a start block sequence number SSN, and a bit bitmap bitmap, where the Ack/Nack response information is used to correctly receive the online line. The wireless block responds.

According to an implementation form, the downlink radio block further comprises an uplink modulation coding command for changing an uplink modulation coding mode of the terminal as necessary.

According to an implementation form, the downlink radio block is a separately constructed message or a message obtained by extending a PACCH control message.

[64] According to an implementation form, the PACCH control message is a packet uplink acknowledgement negative acknowledgement PUAN message, or a packet uplink temporary block flow assignment message.

According to an implementation form, sending the downlink radio block to the terminal in step 420 specifically includes: transmitting the downlink radio block to the at least two independent logical subchannels through different training sequences.

[66] For the specific content of the foregoing embodiment, refer to the corresponding part of the method embodiment on the terminal side, and the description is not repeated here.

Accordingly, a terminal is also proposed in accordance with an embodiment of the present invention. Fig. 5 shows a schematic structural diagram of a terminal according to an embodiment of the present invention. It can be seen that the terminal 500 includes: a sending unit 510, configured to send, to the base station, an uplink radio block that includes a random temporary logical link identifier TLLI of the current terminal, and a receiving unit 520, configured to receive a downlink radio block sent by the base station, where The downlink radio block carries the random TLLI and the temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream indication corresponding to the at least two terminals include a random TLLI and a temporary block flow indication TFI for the current terminal; And the parsing unit 530 is configured to parse the downlink radio block. When the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal to the base station, determine a contention conflict resolution of the current terminal.

According to an implementation form, the sending unit 510 further sends information about whether the current terminal supports the multi-terminal contention conflict resolution method to the base station, so that the base station can determine whether to send the downlink radio block to the current based on the information. terminal.

According to an implementation form, the receiving unit 520 is specifically configured to decode the logical channel by using a predetermined training sequence. According to an implementation form, the receiving unit 520 separately decodes the at least two independent logical subchannels by using a predetermined training sequence during contention conflict resolution, and only for the current after the contention conflict is completed. The logical subchannel of the terminal is decoded.

[71] Those skilled in the art can understand that when there are multiple terminals in the communication system, downlink resources can be effectively saved and communication efficiency can be improved.

Accordingly, a base station is also proposed in accordance with an embodiment of the present invention. Fig. 6 shows a schematic structural diagram of a base station according to an embodiment of the present invention. It can be seen that the base station 600 includes: a receiving unit 610, configured to receive an uplink radio block including a random TLLI of the terminal; and a sending unit 620, configured to send the downlink radio block to the terminal, where the downlink radio block carries at least two The random TLLI and the temporary block flow corresponding to the terminal indicate the TFI, and the random TLLI and the temporary block flow corresponding to the at least two terminals indicate that the TFI includes a random TLLI for the current terminal and a temporary block flow indication TFI, such that when the downlink radio block When the random TLLI carried in the current terminal is the random TLLI sent by the current terminal, the current terminal determines its own contention conflict resolution.

According to an implementation form, the receiving unit 610 is further configured to receive information about whether the terminal supports the multi-terminal contention conflict resolution method, and determine, according to the information, whether to send the downlink radio block to the current terminal.

According to an implementation form, the sending unit 610 uplinks and downlinks the downlink radio blocks through at least two independent logical subchannels through different training sequences.

[75] For specific details of the above apparatus embodiments, reference may be made to the relevant parts of the foregoing method embodiments, and details are not described herein.

It should be understood by those skilled in the art that the division of the device modules in the embodiments of the present invention is functional division, and the actual specific structure may be the splitting or merging of the above functional modules.

[77] The foregoing serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. [78] The solution described in the content of the claims is also the scope of protection of the embodiments of the present invention.

[79] It will be understood by those of ordinary skill in the art that all or part of the processing in the above embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

A multi-terminal competition conflict resolution method, comprising:

And sending, to the base station, an uplink radio block that includes a random temporary logical link identifier TLLI of the current terminal; receiving, by the base station, a downlink radio block, where the downlink radio block carries random corresponding to at least two terminals

The TLLI and the temporary block flow indicate TFI, and the random TLLI and the temporary block flow corresponding to the at least two terminals indicate that the TFI includes a random TLLI and a temporary block flow indication TFI for the current terminal;

The downlink radio block is parsed. When the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal to the base station, the contention conflict resolution of the current terminal is determined.

2. The method according to claim 1, wherein the downlink radio block further carries Ack/Nack response information for responding to whether the uplink radio block is correctly received, wherein the response information includes a starting block sequence number. SSN and / or bit bitmap bitmap.

3. The method of claim 1, wherein the downlink radio block further comprises an uplink modulation coding command for changing an uplink modulation coding mode of the terminal as necessary.

4. The method according to claim 1, further comprising: transmitting information of whether the current terminal supports the multi-terminal contention conflict resolution method to the base station, so that the base station can determine whether to send the downlink radio block to the current based on the information. terminal.

5. The method of claim 4, wherein the information is transmitted to a base station by an access request message or an uplink radio block or an uplink control message comprising a random TLLI.

6. The method of claim 1, wherein the downlink radio block is a separately constructed message or a message obtained by extending a packet associated channel control channel PACCH control message.

7. The method of claim 6, wherein the PACCH control message is a packet uplink acknowledgement negative acknowledgement PUAN message, or a packet resource assignment message.

8. The method according to claim 1, wherein receiving the downlink radio block sent by the base station comprises: decoding the logical channel by using a predetermined training sequence.

9. The method according to claim 8, wherein the logical channel is entered using a predetermined training sequence The row decoding specifically includes: separately decoding the at least two independent logical subchannels by using a predetermined training sequence during the contention conflict resolution, and decoding only the logical subchannels for the current terminal after the contention conflict is completed.

10. A multi-terminal competition conflict resolution method, including:

Receiving an uplink radio block including a random TLLI of the terminal;

Transmitting a downlink radio block to the terminal, where the downlink radio block carries a random TLLI and a temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream indication corresponding to the at least two terminals are included in the TFI The random TLLI and the temporary block flow of the terminal indicate the TFI, so that when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal, the current terminal determines its own contention conflict resolution.

The method according to claim 10, wherein the downlink radio block further carries Ack/Nack response information for responding to whether the uplink radio block is correctly received, wherein the response information includes a starting block sequence number. SSN and / or bit bitmap bitmap -

12. The method of claim 11, wherein the downlink radio block further comprises an uplink modulation coding command for changing an uplink modulation coding mode of the terminal as necessary.

13. The method according to claim 10, further comprising: receiving information of whether the terminal supports the multi-terminal contention conflict resolution method, and determining whether to send the downlink radio block to the current terminal based on the information.

14. The method of claim 13, wherein the information is sent by an access request message, an uplink radio block comprising a random TLLI, or an uplink control message.

15. The method according to claim 10, wherein the downlink radio block is a separately constructed message or a message obtained by extending a PACCH control message.

16. The method according to claim 15, wherein the PACCH control message is a packet uplink acknowledgement negative response PUAN message, or a packet resource assignment message.

The method of claim 10, wherein the transmitting the downlink radio block to the terminal comprises: transmitting the downlink radio block to the at least two independent logical subchannels through different training sequences.

18. A terminal, including:

a sending unit, configured to send, to the base station, an uplink radio block that includes a random temporary logical link identifier TLLI of the current terminal;

a receiving unit, configured to receive a downlink radio block sent by the base station, where the downlink radio block carries a random TLLI and a temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream indication corresponding to the at least two terminals The TFI includes a random TLLI for the current terminal and a temporary block flow indication TFI;

The parsing unit is configured to parse the downlink radio block, and when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal to the base station, determine a contention conflict resolution of the current terminal.

The terminal according to claim 18, wherein the sending unit further transmits information about whether the current terminal supports the multi-terminal contention conflict resolution method to the base station, so that the base station can determine whether the downlink radio block is to be determined based on the information. Send to the current terminal.

20. The terminal according to claim 18, wherein the receiving unit is specifically configured to decode a logical channel by using a predetermined training sequence.

21. The terminal according to claim 20, wherein the receiving unit separately decodes the at least two independent logical subchannels by using a predetermined training sequence during contention conflict resolution, after the contention conflict is completed only Decoding the logical subchannel for the current terminal.

22. A base station comprising:

a receiving unit, configured to receive an uplink radio block including a random TLLI of the terminal; and

a sending unit, configured to send a downlink radio block to the terminal, where the downlink radio block carries a random TLLI and a temporary block stream indication TFI corresponding to the at least two terminals, and the random TLLI and the temporary block stream indication corresponding to the at least two terminals The TFI includes a random TLLI and a temporary block flow indication TFI for the current terminal, so that when the random TLLI for the current terminal carried in the downlink radio block is the random TLLI sent by the current terminal, the current terminal determines its own contention conflict. solve.

The base station according to claim 22, wherein the receiving unit is further configured to: receive information about whether the terminal supports the multi-terminal contention conflict resolution method, and determine, according to the information, whether to send the downlink radio block to the current terminal. .

24. The base station of claim 22, wherein the transmitting unit uplinks and downlinks the downstream radio blocks over at least two independent logical subchannels through different training sequences.