CN107231689B

CN107231689B - Terminal-initiated data transmission method and device

Info

Publication number: CN107231689B
Application number: CN201610173540.9A
Authority: CN
Inventors: 谌丽; 郑方政
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-03-24
Filing date: 2016-03-24
Publication date: 2020-03-24
Anticipated expiration: 2036-03-24
Also published as: WO2017161995A1; TW201735698A; TWI738732B; CN107231689A

Abstract

The invention discloses a data transmission method and a device initiated by a terminal, which comprises the following steps: sending a sequence code associated with a terminal identifier to a network side on a terminal, wherein the terminal identifier and/or the sequence code is a unique identifier of the terminal; after the network side receives the sequence code, the network side uses the sequence code and/or the terminal identification associated with the terminal identification to carry out data transmission. The invention relates to a data transmission scheme with low time delay initiated by a terminal, which can meet the requirement of low time delay of a new generation of 5G system.

Description

Terminal-initiated data transmission method and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for data transmission initiated by a terminal.

Background

In an LTE (Long Term Evolution) system, a network side and a terminal perform data transmission based on a Cell, the Cell under a base station allocates a Cell Radio network temporary Identity (C-RNTI) for the terminal, and the C-RNTI is used for performing data transmission with the terminal. When a terminal actively accesses a network or initiates data transmission with a network side, a random access process is usually initiated first. The random access of the LTE system is divided into two types, contention random access and non-contention random access.

Contention random access is used for five purposes: the terminal is initially accessed; RRC (Radio Resource Control) connection reestablishment; switching; downlink data arrives in an RRC connected state in an asynchronous state; uplink data arrives in the RRC connected state; positioning in RRC connected state.

Fig. 1 is a schematic diagram of a contention random access process, which is shown in fig. 1 and mainly includes four steps:

msg 1: a UE (User Equipment) selects a Random Access preamble and a PRACH (Physical Random Access Channel) resource and transmits the selected Random Access preamble to a base station by using the PRACH resource.

Msg 2: the base station receives the preamble, calculates a Timing Advance (TA), and sends a random access response to the UE, where the random access response includes the timing advance information, an uplink grant (UL grant) for the Msg3, and a temporary C-RNTI allocated by the network side. A Physical Downlink Control Channel (PDCCH) bearing the Msg2 scheduling message is scrambled by using Random Access-Radio network temporary Identity (RA-RNTI), and the RA-RNTI uniquely corresponds to a time-frequency resource for transmitting the Msg1 in a 10ms window; in addition, the Msg2 also carries a preamble ID, and the UE determines that the Msg2 corresponds to the Msg1 sent by the UE through the RA-RNTI and the preamble ID.

Msg 3: the UE sends uplink transmission on the UL grant specified by the Msg2, the content of the uplink transmission is different for different random access reasons Msg3, for example, for initial access, the Msg3 transmits an RRC connection establishment request.

Msg 4: and the UE can judge whether the random access is successful according to the Msg 4. For the initial access UE, after the competition resolving is successful, the temporary C-RNTI is automatically converted into the unique UE identity C-RNTI of the UE in the cell.

Non-contention random access for handover; downlink data arrives; positioning and acquiring uplink timing.

Fig. 2 is a schematic diagram of a non-contention random access process, which is shown in fig. 2 and mainly includes three steps:

msg 0: the base station allocates a dedicated preamble for non-contention random access and a PRACH resource used by random access to the UE.

Msg 1: and the UE sends the appointed special preamble to the base station on the appointed PRACH resource according to the instruction of the Msg 0. And after receiving the Msg1, the base station calculates an uplink timing advance TA according to the Msg 1.

Msg 2: and the base station sends a random access response to the UE, wherein the random access response comprises timing advance information and a subsequent uplink transmission resource allocation (UL grant), and the timing advance is used for the timing relation of the subsequent uplink transmission of the UE.

The prior art is disadvantageous in that in the LTE system, a terminal first needs to perform a random access procedure to initiate transmission in initial access and other situations without uplink transmission resource allocation. When transmission is accessed, the unique identifier C-RNTI in the cell is distributed through a random access process so as to carry out the subsequent data transmission process. The delay of the random access process of the LTE system is not favorable for the requirement of low delay of the new generation 5G system.

Disclosure of Invention

The invention provides a data transmission method and device initiated by a terminal, which are used for providing a data transmission scheme with low time delay initiated by the terminal.

The embodiment of the invention provides a data transmission method initiated by a terminal, which comprises the following steps:

sending a sequence code associated with a terminal identifier to a network side on a terminal, wherein the terminal identifier and/or the sequence code is a unique identifier of the terminal;

after the network side receives the sequence code, the network side uses the sequence code and/or the terminal identification associated with the terminal identification to carry out data transmission.

Preferably, the association relationship between the terminal identifier and the sequence code is predicted by the terminal and the network side;

or the association relation between the terminal identification and the sequence code is known through the interaction between the terminal and the network side.

Preferably, when the association relationship between the terminal identifier and the sequence code is obtained through interaction between the terminal and the network side, one sequence code is selected from a first sequence code selectable resource pool and sent as the first sequence code, the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and the second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier to the terminal after the network side confirms that the terminal is accessed to the network.

Preferably, further comprising:

and when receiving a command of sending the sequence code from the network side, sending the sequence code, wherein the sequence code is used for the network side to carry out uplink timing estimation.

Preferably, the command is physical layer signaling or layer 2 control signaling.

Preferably, the terminal identifier and/or the sequence code is a unique identifier of the terminal, and is one of the following ways:

the terminal identification is the unique identification of the terminal, and the sequence code is the unique identification of the terminal;

the terminal identification is combined with a sequence code to form a unique identification of the terminal;

the terminal identification is a unique identification of the terminal after being combined with a plurality of sequence codes, and the plurality of sequence codes have an association relation.

Preferably, the terminal identifier is a unique identifier of the terminal, and when the sequence code is the unique identifier of the terminal, the sequence code is used for the network side to identify the terminal identifier of the terminal according to the association relationship, and the terminal identifier is used for the network side to perform data transmission;

when the terminal identification is combined with a sequence code and then is the unique identification of the terminal; the sequence code is used for a network side to allocate a temporarily used terminal identifier for the terminal, and the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier;

the terminal identification is a unique identification of the terminal after being combined with a plurality of sequence codes, and when an association relationship exists among the plurality of sequence codes; the first sequence code is used for a network side to allocate a temporarily used terminal identifier for the terminal, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, and the second sequence code and the terminal identifier are used for the network side to uniquely identify the terminal identifier of the terminal;

the terminal identification is a unique identification of the terminal after being combined with a plurality of sequence codes, and when an association relationship exists among the plurality of sequence codes; the first sequence code is used for determining the appointed resource for transmitting the second sequence code by the network side, and the second sequence code and the first sequence code are used for uniquely identifying the terminal identification of the terminal by the network side.

receiving a sequence code which is sent by a terminal to a network side and is associated with a terminal identifier, wherein the terminal identifier and/or the sequence code is a unique identifier of the terminal;

and after receiving the sequence code at the network side, the terminal transmits data by using the sequence code and/or the terminal identification associated with the terminal identification.

Preferably, when the association relationship between the terminal identifier and the sequence code is known through the interaction between the terminal and the network side:

after receiving a first sequence code sent by a terminal, determining a temporarily used terminal identifier according to the corresponding relation between the first sequence code and the temporarily used terminal identifier;

allocating the terminal transmission terminal identification and the resource of a second sequence code to the terminal according to the temporarily used terminal identification, wherein the first sequence code and the second sequence code have an association relation;

and after receiving the terminal identifier and the second sequence code transmitted by the terminal on the resource, allocating the terminal identifier for the terminal after confirming that the terminal is accessed to the network according to the second sequence code and the temporarily used terminal identifier.

Preferably, after allocating the terminal identifier to the terminal, the method further includes:

releasing the first sequence code, the temporarily used terminal identifier and the second sequence code back to a resource pool; or, releasing the first sequence code and the temporarily used terminal identifier back to the resource pool.

Preferably, further comprising:

and sending the sequence code to a terminal command to trigger the terminal, wherein the sequence code is used for a network side to carry out uplink timing estimation.

The embodiment of the invention provides a data transmission device initiated by a terminal, which comprises:

a sending module, configured to send, to a network side on a terminal, a sequence code associated with a terminal identifier, where the terminal identifier and/or the sequence code is a unique identifier of the terminal;

and the terminal transmission module is used for carrying out data transmission by using the sequence code and/or the terminal identification associated with the terminal identification with the network side after the network side receives the sequence code.

or the association relation between the terminal identification and the sequence code is obtained through the interaction between the terminal and the network side.

Preferably, the sending module is further configured to select a sequence code from a first sequence code selectable resource pool as a first sequence code to be sent when the association relationship between the terminal identifier and the sequence code is obtained through interaction between the terminal and the network side, where the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier to the terminal after confirming that the terminal is accessed to the network.

Preferably, the sending module is further configured to send the sequence code when receiving a command that the network side sends the sequence code, where the sequence code is used for the network side to perform uplink timing estimation.

the terminal comprises a receiving module, a judging module and a sending module, wherein the receiving module is used for receiving a sequence code which is sent by a terminal to a network side and is associated with a terminal identifier, and the terminal identifier and/or the sequence code are/is a unique identifier of the terminal;

and the network side transmission module is used for carrying out data transmission with the terminal by using the sequence code and/or the terminal identification associated with the terminal identification after the network side receives the sequence code.

Preferably, the network side transmission module is further configured to, when the association relationship between the terminal identifier and the sequence code is known through interaction between the terminal and the network side:

Preferably, the network side transmission module is further configured to release the first sequence code, the temporarily used terminal identifier, and the second sequence code back to the resource pool after allocating the terminal identifier to the terminal; or, releasing the first sequence code and the temporarily used terminal identifier back to the resource pool.

Preferably, the network side transmission module is further configured to instruct the terminal to send the sequence code, where the sequence code is used for the network side to perform uplink timing estimation.

The invention has the following beneficial effects:

in the technical solution provided in the embodiment of the present invention, after the sequence code associated with the terminal identifier is sent to the network side on the terminal, the network side returns the resource allocated for data transmission, and the terminal can initiate data transmission on the resource. In the process, a random access process is not needed any more, and a unique identifier C-RNTI in a cell is not needed to be allocated to the terminal through the random access process during transmission access, so that the method is a data transmission scheme initiated by the terminal and with low time delay. Furthermore, the scheme can meet the requirement of a new generation of 5G system on low time delay.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a diagram illustrating a contention random access procedure in the background art;

FIG. 2 is a diagram illustrating a non-contention random access procedure in the background art;

fig. 3 is a schematic flow chart illustrating an implementation of a data transmission method initiated by a terminal at a terminal side in an embodiment of the present invention;

fig. 4 is a schematic flow chart illustrating an implementation of a data transmission method initiated by a terminal on a network side in an embodiment of the present invention;

FIG. 5 is a schematic flow chart of example 1 according to the present invention;

FIG. 6 is a schematic flow chart of example 2 according to the present invention;

FIG. 7 is a schematic flow chart illustrating an embodiment 3 of the present invention;

FIG. 8 is a schematic flow chart of an embodiment 4 of the present invention;

fig. 9 is a schematic diagram of an implementation flow of obtaining an association relationship through interaction when a terminal initially accesses in the embodiment of the present invention;

FIG. 10 is a sequence code and uplink and downlink transmission timing diagram according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a data transmission device initiated by a terminal on the terminal side in the embodiment of the present invention;

fig. 12 is a schematic structural diagram of a data transmission device initiated by a terminal on a network side in an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a base station in an embodiment of the present invention.

Detailed Description

In the LTE system, a terminal initiates transmission when initially accessing and other situations without uplink transmission resource allocation, and first needs to perform a random access procedure. During transmission access, the unique identifier C-RNTI in the cell is distributed through a random access process to carry out a subsequent data transmission process, and the time delay of the random access process of the LTE system is particularly not favorable for the requirement of low time delay of a new generation of 5G systems. Based on this, the embodiment of the present invention provides a data transmission scheme initiated by a terminal, where the terminal sends a sequence code associated with a terminal identifier to a network side, and after receiving the sequence code, the network side and the terminal use the sequence code associated with the terminal identifier and/or the terminal identifier to perform data transmission. The following describes embodiments of the present invention with reference to the drawings.

In the process of description, the implementation of the terminal and the network side will be described separately, and then an example of the implementation of the terminal and the network side in cooperation will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such an explanation does not mean that the two must be implemented in cooperation or separately, and actually, when the terminal and the network are implemented separately, the problems on the terminal side and the network side are solved separately, and when the two are used in combination, a better technical effect is obtained.

Fig. 3 is a schematic diagram of an implementation flow of a terminal-initiated data transmission method at a terminal side, as shown in the figure, including:

step 301, sending a sequence code associated with a terminal identifier to a network side on a terminal, wherein the terminal identifier and/or the sequence code is a unique identifier of the terminal;

step 302, after receiving the sequence code at the network side, the network side performs data transmission by using the sequence code and/or the terminal identifier associated with the terminal identifier.

Fig. 4 is a schematic diagram of an implementation flow of a data transmission method initiated by a terminal on a network side, as shown in the figure, the method includes:

step 401, receiving a sequence code associated with a terminal identifier sent by a terminal to a network side, wherein the terminal identifier and/or the sequence code is a unique identifier of the terminal;

step 402, after receiving the sequence code at the network side, the terminal uses the sequence code and/or the terminal identifier associated with the terminal identifier to perform data transmission.

In the implementation of

steps

302 and 402, after receiving the sequence code, the network side performs data transmission with the terminal using the sequence code and/or the terminal identifier associated with the terminal identifier, where the data transmission includes uplink and downlink transmission.

In case of uplink transmission, after the terminal side transmits the sequence code, the terminal side receives uplink resource allocation of the network side and transmits uplink transmission on the allocated resource. This scheme will be illustrated by examples 2, 3, 4, etc.

In the case of downlink transmission, if the base station directly identifies the terminal, downlink transmission can be immediately initiated, and the scheme will be described by embodiment 1 and the like;

it is also possible that the base station directly schedules and transmits downlink transmission, for example, in embodiment 6, the transmission of TA is only one downlink transmission.

The following description will first describe a terminal identifier and a sequence code in implementation.

And (3) terminal identification: the identifier of the terminal in a certain network area is different from the C-RNTI which can be recognized by the LTE system in a cell area, and the identifier of the terminal may be an identifier recognized in the whole network or under a specific operator or in an area containing a plurality of TPs (transmission points). The terminal identification is divided into a high-level terminal identification and a physical-layer terminal identification (for example, C-RNTI is the physical-layer terminal identification of the LTE system), the length of the high-level terminal identification (high layer UE ID) is larger, and the high-level terminal identification is unique in the specified range; the physical layer identity (physical UE ID) is limited in its length and may be unique within the above specified range or need to uniquely identify the terminal together with other information.

The physical layer terminal identifier (physical UE ID) may also be an air interface terminal identifier or other similar name, as long as the purpose is to identify the terminal in an air interface transmission in a similar manner provided by the embodiment of the present invention. And is not limited to only the above-mentioned several terminal identifications.

Sequence code associated with the terminal identity: the sequence code is used for initiating transmission to a network side, and is different from a preamble code shared by LTE system UE and randomly selected and a special preamble code needing network side special signaling indication allocation, and the sequence code is designed to be directly associated with a terminal identifier. There are several possible uses for:

1. the terminal identification is the unique identification of the terminal, and the sequence code is the unique identification of the terminal;

the physical layer terminal identification and the sequence code sync1 are both terminal-specific, and the network side can identify the terminal uniquely by any one;

2. the terminal identification is combined with a sequence code to form a unique identification of the terminal;

the physical layer terminal identification + sequence code sync1 is combined to form a terminal unique identification, and the network side uniquely identifies the terminal by detecting sync1 and the physical layer terminal identification;

3. the terminal identification is a unique identification of the terminal after being combined with a plurality of sequence codes, and the plurality of sequence codes have an association relation.

A plurality of sequence codes are associated with the terminal identification, and the sequence codes are associated with each other, such as sync1 used for initial sequence code transmission and sync3 used for transmission together with subsequent uplink transmission.

In implementation, the association relation between the terminal identifier and the sequence code may be predicted by the terminal and the network side; or the association relation between the terminal identification and the sequence code is known through the interaction between the terminal and the network side.

The following describes the implementation of these two modes with reference to examples. In the description, the temporarily used physical UE ID is simply referred to as a temporary physical UE ID for convenience, and when the correspondence between the physical UE ID and the sequence code is expressed more appropriately, the corresponding physical UE ID is also expressed.

1. The association relationship between the terminal identification and the sequence code is predicted by the terminal and the network side.

1) The terminal identification is the unique identification of the terminal, when the sequence code is the unique identification of the terminal, the sequence code is used for identifying the terminal identification of the terminal according to the incidence relation by the network side, and the terminal identification is used for data transmission by the network side;

specifically, the physical UE ID and sync1 are both terminal-specific, and the network side can uniquely identify the terminal by any one of them.

When a terminal needs to initiate transmission, a sync1 sequence is sent on an uplink channel; and the network side transmission point receives and identifies the sync1, determines the corresponding physical UE ID, and then performs data transmission with the terminal by using the physical UE ID.

Example 1:

in this embodiment, the physical UE ID and sync1 are both terminal-specific. Fig. 5 is a schematic flow chart of the embodiment 1, and as shown in the figure, the method may include the following steps:

step 501: the terminal sends sync1 on the uplink channel.

The sync1 uniquely identifies a terminal and corresponds to a physical UE ID;

step 502: and the network side transmission point identifies the terminal and determines the corresponding physical UE ID.

The network side transmission point receives and identifies sync1 and determines the corresponding physical UE ID.

Step 503: the network side transmission point uses the physical UE ID and sync1 (possibly including sync3) to carry out air interface transmission with the terminal.

And the subsequent network side and the terminal use the physical UE ID for data scheduling and transmission.

2) When the terminal identification is combined with a sequence code and then is the unique identification of the terminal; the sequence code is used for the network side to allocate a temporarily used terminal identifier for the terminal, and the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier;

specifically, when the physical UE ID and sync1 are combined to uniquely determine the terminal, the terminal sends a sync1 sequence on an uplink channel when needing to initiate transmission; a network side transmission point receives and identifies sync1 and allocates uplink resources by using a temporary physical UE ID; the terminal carries out uplink transmission on uplink resources distributed by a network side and carries a physical UE ID; the network side transmission point receives the uplink transmission and uniquely identifies the terminal, and necessary feedback can be performed on the terminal in specific implementation.

Example 2

In this embodiment, the terminal is determined by combining the physical UE ID and sync1. Fig. 6 is a schematic flow chart of the embodiment 2, as shown in the figure, the following steps may be included:

step 601: the terminal sends sync1 on the uplink channel.

For a terminal, the sync1 is combined with one physical UE ID to uniquely identify the terminal, but the sync1 itself may correspond to multiple physical UE IDs.

Step 602: and the network side transmission point uses the temporary physical UE ID to allocate uplink resources.

A network side transmission point receives and identifies sync1 and allocates uplink resources by using temporary physical UE IDs, wherein the temporary physical UE IDs can be associated with sync1 and/or a sending time-frequency resource position thereof, for example, one of the physical UE IDs possibly corresponding to sync1 is randomly selected as the temporary physical UE ID;

step 603: the terminal carries out uplink transmission on uplink resources distributed by a network side, carries a physical UE ID of the terminal, and can also send sync3 corresponding to the physical UE ID in specific implementation;

step 604: the network side transmission point receives the uplink transmission and uniquely identifies the terminal through sync1 and the physical UE ID sent by the terminal, and the network side transmission point can also perform necessary feedback on the terminal in specific implementation. For example, feedback confirmation or failure.

Step 605: the network side transmission point uses the physical UE ID and sync1 (possibly including sync3) to carry out air interface transmission with the terminal.

3) The terminal identification is a unique identification of the terminal after being combined with a plurality of sequence codes, and when an association relationship exists among the plurality of sequence codes; the first sequence code is used for the network side to allocate a terminal identifier used temporarily for the terminal, the terminal identifier used temporarily is used for the network side to allocate resources for transmitting the terminal identifier and the second sequence code, and the second sequence code and the terminal identifier are used for the network side to uniquely identify the terminal identifier of the terminal;

specifically, when the physical UE ID and sync3 are combined to uniquely determine the terminal, the terminal sends a sync1 sequence on an uplink channel when needing to initiate transmission; a network side transmission point receives and identifies sync1 and allocates uplink resources by using a temporary physical UE ID, wherein sync1 and sync3 have a corresponding relation; the terminal carries out uplink transmission on uplink resources distributed by a network side, carries a physical UE ID and simultaneously sends an uplink sequence sync 3; the network side transmission point receives the uplink transmission, uniquely identifies the terminal according to the combination of the physical UE ID and the sync3, and can perform necessary feedback on the terminal.

Example 3

In this embodiment, the physical UE ID and sync3 are combined to uniquely determine the terminal. Fig. 7 is a schematic flow chart of the embodiment 3, as shown in the figure, the following steps may be included:

step 7001: the terminal sends sync1 on the uplink channel;

step 702: and the network side transmission point uses the temporary physical UE ID to allocate uplink resources.

A network side transmission point receives and identifies sync1 and allocates uplink resources by using a temporary physical UE ID, wherein the temporary physical UE ID can be associated with sync1 and/or a sending time-frequency resource position thereof, for example, sync1 is uniquely corresponding to one temporary physical UE ID;

step 703: the terminal performs uplink Transmission on the uplink resource allocated by the network side, carries the physical UE ID of the terminal, and sends the uplink sequence sync3 on the uplink TTI (Transmission Time Interval).

Step 704: the network side transmission point receives the uplink transmission, uniquely determines the terminal through the physical UE ID carried by the uplink transmission and the sync3 sent on the uplink TTI at the same time, and can also perform necessary feedback on the terminal in specific implementation. For example, feedback confirmation or failure.

In steps 703 and 704, the TTI is expressed as one uplink transmission unit, and may be understood as "one uplink subframe" similar to that described in LTE. The purpose of this is mainly to emphasize that the uplink transmission and sync3 are sent in the same uplink transmission unit.

Step 705: the network side transmission point uses the physical UE ID and sync1 (possibly including sync3) to carry out air interface transmission with the terminal.

4) The terminal identification is a unique identification of the terminal after being combined with a plurality of sequence codes, and when an association relationship exists among the plurality of sequence codes; the first sequence code is used for determining the appointed resource for transmitting the second sequence code by the network side, and the second sequence code and the first sequence code are used for uniquely identifying the terminal identification of the terminal by the network side.

When the terminal is uniquely determined by combining sync1 and sync3 and corresponds to one physical UE ID, the terminal sends a sync1 sequence on an uplink channel when needing to initiate transmission; the network side transmission point receives and identifies sync1, (the network side may or may not allocate uplink transmission resources as required); the terminal sends sync3 (possibly sending uplink data transmission as required) at a position (such as uplink TTI at least two TTIs apart) with an agreed timing relationship with the transmission position of sync 1; the network side transmission point receives sync3 and uniquely identifies the terminal according to the combination of sync1 and sync 3.

Example 4

In the present embodiment, sync1 and sync3 are combined to uniquely determine a terminal, and correspond to one physical UE ID. Fig. 8 is a schematic flow chart of the embodiment 4, as shown in the figure, the following steps may be included:

step 801: the terminal sends sync1 on the uplink channel;

step 802: and the network side transmission point uses the temporary physical UE ID to allocate uplink resources.

After the network side transmission point receives and identifies sync1, the following two ways are possible:

mode 1: a network side transmission point uses a temporary physical UE ID to allocate uplink resources for a terminal, wherein the temporary physical UE ID can be associated with sync1 and/or a sending time-frequency resource position thereof, for example, one of the physical UE IDs possibly corresponding to sync1 is randomly selected as the temporary physical UE ID, and the mode is a mode illustrated in the figure;

mode 2: the network side does not allocate uplink resources to the terminal;

step 803 a: corresponding to the method 1: the terminal carries out uplink transmission on uplink resources distributed by a network side and carries the physical UE ID of the terminal, and simultaneously sends an uplink sequence sync3 on the uplink TTI;

step 803 b: for mode 2: the terminal transmits sync3 at an uplink TTI having a determined timing relationship with sync1, e.g., an uplink TTI two TTIs apart.

In the implementation, the network side transmission point can also perform necessary feedback on the terminal. For example, feedback confirmation or failure.

In this step, the TTI is expressed as one uplink transmission unit, and may be understood as "one uplink subframe" similar to that described in LTE. The purpose of this is mainly to emphasize that the uplink transmission and sync3 are sent in the same or different uplink transmission units but with a timing relationship.

Step 804: the network side transmission point receives sync3, uniquely identifies the terminal according to the combination of sync1 and sync3, and can further determine the physical UE ID of the terminal through the mode 1 of steps 802 and 803, and release the temporary physical UE ID in step 802.

2. The association relation between the terminal identification and the sequence code is obtained through the interaction between the terminal and the network side.

On the terminal side, when the association relationship between the terminal identifier and the sequence code is known through interaction between the terminal and the network side, the terminal selects a sequence code from a first sequence code selectable resource pool to be sent as a first sequence code, the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier for the terminal after the network side is confirmed that the terminal is accessed to the network.

Correspondingly, on the network side, when the association relationship between the terminal identifier and the sequence code is known through the interaction between the terminal and the network side:

In this embodiment, the network side and the terminal do not establish a consensus of the corresponding relationship between the physical UE ID, the sequence code and the terminal. In this case, the physical UE ID and the sequence code used by the terminal need to be determined through interaction between the network side and the terminal.

Specifically, when the terminal does not acquire the unique high-level UE ID, the unique high-level UE ID is not acquired before the network side successfully authenticates the terminal.

After the network side successfully authenticates the terminal, the network side allocates a unique high-level UE ID for the terminal, the high-level UE ID has a direct corresponding relation with a specific physical UE ID and a sequence code, the corresponding physical UE ID and the sequence code are used for subsequent data transmission, and the association relation between the terminal identifier and the sequence code in 1 can be specifically referred to as a implementation mode predicted by the terminal and the network side. That is, what can be referred to in the subsequent use is different only in the acquisition manner of the association relationship, 1 is a priori known, and 2 is known by interaction.

The specific process can be as follows: a terminal selects a sequence code from a sync1 sequence selectable resource pool as sync1 to send, wherein the sync1 code corresponds to a temporary physical UE ID; after the network side transmission point receives sync1, if the sync1 and the corresponding physical UE ID are not occupied by other terminals, the physical UE ID corresponding to the sync1 is used for carrying out data scheduling and transmission on the terminal, if the physical UE ID is occupied, a conflict indication is replied, and the conflict indication can carry a backoff parameter for delaying the initiation of access. After the network side allocates the unique high-level UE ID for the terminal or the terminal fails to access the network, the sync1 code used by the access and the corresponding physical UE ID are released back to the resource pool for the competitive use of other terminals.

Alternatively, the sync1 corresponds one-to-one to another sequence code sync 3. The terminal can carry the physical UE ID and send sync3 when sending the uplink transmission, so that the network side can identify the terminal.

Example 5

Fig. 9 is a schematic diagram of an implementation flow of obtaining association relationship through interaction when a terminal initially accesses, as shown in the figure, the implementation flow may include the following steps:

step 901: the terminal sends sync1 on the uplink channel.

The terminal selects one sequence code from the sync1 sequence selectable resource pool as sync1 to send to the network side.

Step 902: and the network side transmission point uses the temporary physical UE ID to allocate uplink resources.

The network side transmission point TP receives the sync1 and uses the temporary physical UE ID corresponding to the sync1 to allocate uplink resources for the terminal, the physical UE ID can be implicitly or explicitly carried in the resource allocation command, the explicit means that the physical UE ID is directly a domain of the uplink resource allocation command, the implicit means that the physical UE ID is added in the resource allocation command as a scrambling code and the like, and the terminal restores the resource allocation command in a mode of matched filtering.

Step 903: the terminal carries out uplink transmission on uplink resources distributed by a network side, carries a temporary physical UE ID of the terminal, and can also send sync3 corresponding to the physical UE ID in specific implementation;

the terminal initiates uplink transmission on uplink resources distributed by a network side, the uplink transmission carries a temporary physical UE ID corresponding to the sync1, the uplink transmission content comprises a request and identity information required by the terminal to access the network, and the like, the terminal optionally sends the sync3 in the same TTI of the uplink transmission, and the sync3 has corresponding relations with the sync1 and the physical UE ID;

in step 903, the TTI is expressed as one uplink transmission unit, and may be understood as "one uplink subframe" similar to that described in LTE. The purpose of this is mainly to emphasize that the uplink transmission and sync3 are sent in the same uplink transmission unit.

Step 904: the network side authenticates the terminal authentication and distributes a unique high-level UE ID;

the network side transmission point identifies the terminal initiating transmission through the temporary physical UE ID and/or sync3, resolves the uplink transmission content sent by the terminal, performs operations such as authentication and authorization, confirms that the terminal accesses the network, and allocates a high-level UE ID, wherein the high-level UE ID corresponds to the determined physical UE ID, sync1 and sync3 (optional).

Step 905: the network side and the terminal use the physical UE ID, sync1 and sync3 (optional) obtained in step 904 for data transmission.

In practice, the temporary physical UE ID and corresponding sync1, sync3 may be released back to the resource pool. That is, after allocating the terminal identifier to the terminal, the method may further include:

In the implementation, on the network side, the method may further include:

Correspondingly, on the terminal side, the method can further comprise the following steps:

In particular, the command may be physical layer signaling or layer 2 control signaling.

Example 6:

under the scene that a network side triggers a terminal to send an uplink sequence code to acquire uplink timing, the network side mainly needs to estimate the uplink timing by using an uplink signal or data sent by the terminal. This can be implemented as follows:

the method comprises the following steps: a network side transmission point sends a command to a terminal to trigger the terminal to send a sync1, wherein the command can be physical layer signaling or layer 2 control signaling, and the signaling carries a physical UE ID and/or a downlink UE specific sequence code (DL sync);

step two: the terminal sends sync 1;

step three: the network side receives sync1 and utilizes sync1 to perform uplink timing estimation, and sends an uplink timing command TA to the terminal.

In practice, transmission of a plurality of sequence codes or the like is involved, and in particular practice, it may be implemented as follows.

Fig. 10 is a schematic diagram of sequence codes and uplink and downlink transmission timing sequences, and as shown in the figure, it is assumed that a terminal sends uplink sync1 transmission at a first sync1 position, a network side transmission point sends necessary uplink resource allocation to the terminal at a position corresponding to a first arrow, and the terminal sends uplink transmission and/or sync3 at a third uplink TTI.

In various embodiments, the TTI is expressed as one uplink transmission unit, and may be understood as "one uplink subframe" similar to that described in LTE. The purpose of this is mainly to emphasize that the uplink transmission and sync3 are sent in the same or different uplink transmission units but with a timing relationship.

Based on the same inventive concept, the embodiment of the present invention further provides a data transmission device initiated by a terminal, and because the principles of solving the problems of these devices are similar to the data transmission method initiated by a terminal, the implementation of these devices can refer to the implementation of the method, and the repeated parts are not described again.

Fig. 11 is a schematic structural diagram of a terminal-initiated data transmission apparatus on a terminal side, as shown in the figure, the apparatus may include:

a sending module 1101, configured to send, to a network side, a sequence code associated with a terminal identifier on a terminal, where the terminal identifier and/or the sequence code is a unique identifier of the terminal;

the terminal transmission module 1102 is configured to perform data transmission with the network side using the sequence code and/or the terminal identifier associated with the terminal identifier after the network side receives the sequence code.

In implementation, the association relationship between the terminal identifier and the sequence code is predicted by the terminal and the network side;

In implementation, the sending module is further configured to select a sequence code from a first sequence code selectable resource pool as a first sequence code to be sent when the association relationship between the terminal identifier and the sequence code is obtained through interaction between the terminal and the network side, where the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier to the terminal after confirming that the terminal is accessed to the network.

In implementation, the sending module is further configured to send the sequence code when receiving a command that the network side sends the sequence code, where the sequence code is used for the network side to perform uplink timing estimation.

In an implementation, the command is physical layer signaling or layer 2 control signaling.

In implementation, the terminal identifier and/or the sequence code is a unique identifier of the terminal, and is one of the following modes:

In implementation, the terminal identifier is a unique identifier of the terminal, and when the sequence code is the unique identifier of the terminal, the sequence code is used for the network side to identify the terminal identifier of the terminal according to the association relationship, and the terminal identifier is used for the network side to perform data transmission;

Fig. 12 is a schematic structural diagram of a data transmission device initiated by a terminal on a network side, as shown in the figure, the data transmission device may include:

a receiving module 1201, configured to receive a sequence code associated with a terminal identifier and sent by a terminal to a network side, where the terminal identifier and/or the sequence code is a unique identifier of the terminal;

a network side transmission module 1202, configured to perform data transmission with the terminal by using the sequence code and/or the terminal identifier associated with the terminal identifier after the network side receives the sequence code.

In an implementation, the network side transmission module is further configured to, when the association relationship between the terminal identifier and the sequence code is known through interaction between the terminal and the network side:

In implementation, the network side transmission module is further configured to release the first sequence code, the temporarily used terminal identifier, and the second sequence code back to the resource pool after allocating the terminal identifier to the terminal; or, releasing the first sequence code and the temporarily used terminal identifier back to the resource pool.

In implementation, the network side transmission module is further configured to instruct the terminal to send the sequence code, where the sequence code is used for the network side to perform uplink timing estimation.

In implementation, the terminal identifier and/or the sequence code is a unique identifier of the terminal, and is one of the following ways:

For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.

When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.

Fig. 13 is a schematic structural diagram of a terminal, and as shown in the figure, the terminal may include:

a processor 1300, for reading the program in the memory 1320, for executing the following processes:

determining a sequence code associated with the terminal identifier;

a transceiver 1310 for transmitting data under the control of the processor 1300, performing the following processes:

In implementation, when the association relationship between the terminal identifier and the sequence code is obtained through interaction between the terminal and the network side, one sequence code is selected from a first sequence code selectable resource pool and sent as the first sequence code, the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier to the terminal after the network side confirms that the terminal is accessed to the network.

In an implementation, the method further comprises the following steps:

In fig. 13, among other things, the bus architecture may include any number of interconnected buses and bridges with various circuits being linked together, particularly one or more processors represented by processor 1300 and memory represented by memory 1320. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1310 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. User interface 1330 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1300 in performing operations.

Fig. 14 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

the processor 1400 is used for reading the program in the memory 1420 and executing the following processes:

determining a sequence code associated with the terminal identifier;

a transceiver 1410 for transmitting data under the control of the processor 1400, performing the following processes:

In implementation, when the association relationship between the terminal identifier and the sequence code is known through interaction between the terminal and the network side:

In the implementation, after allocating the terminal identifier to the terminal, the method further includes:

In an implementation, the method further comprises the following steps:

Where in fig. 14 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors, represented by the processor 1400, and various circuits of memory, represented by the memory 1420, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1410 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

In summary, in the technical solution provided in the embodiment of the present invention, the terminal sends the sequence code associated with the terminal identifier to the network side, and after receiving the sequence code, the network side and the terminal use the sequence code associated with the terminal identifier and/or the terminal identifier to perform data transmission. Further, the corresponding relation among the physical UE ID, the sync1 and the sync3 and several ways for determining the terminal, and a specific implementation example are provided.

By the technical scheme provided by the embodiment of the invention, the transmission initiated by the terminal and the network side can be faster than the LTE random access process.

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 an entirely hardware embodiment, an entirely 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.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A data transmission method initiated by a terminal is characterized by comprising the following steps:

after receiving the sequence code, the network side transmits data by using the sequence code and/or the terminal identification associated with the terminal identification;

the method further comprises the following steps:

2. The method of claim 1, wherein the association relationship between the terminal identifier and the sequence code is predicted by the terminal and the network side;

3. The method of claim 2, wherein when the association relationship between the terminal identifier and the sequence code is obtained through interaction between the terminal and the network side, a sequence code is selected from a first resource pool selectable by the sequence code and sent as a first sequence code, the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier to the terminal after confirming that the terminal accesses the network.

4. The method of claim 1, wherein the command is physical layer signaling or layer 2 control signaling.

5. The method according to any of claims 1 to 4, wherein the terminal identity and/or the sequence code is a unique identity of the terminal, in one of the following ways:

6. The method according to claim 5, wherein the terminal identifier is a unique identifier of the terminal, and when the sequence code is the unique identifier of the terminal, the sequence code is used for the network side to identify the terminal identifier of the terminal according to the association relationship, and the terminal identifier is used for the network side to perform data transmission;

7. A data transmission method initiated by a terminal is characterized by comprising the following steps:

after receiving the sequence code at the network side, the network side transmits data with the terminal by using the sequence code and/or the terminal identification associated with the terminal identification;

the method further comprises the following steps:

8. The method of claim 7, wherein the association relationship between the terminal identifier and the sequence code is predicted by the terminal and the network side;

9. The method of claim 8, wherein when the association relationship between the terminal identifier and the sequence code is known through the interaction between the terminal and the network side:

10. The method of claim 9, wherein after assigning the terminal identification to the terminal, further comprising:

11. The method of claim 7, wherein the command is physical layer signaling or layer 2 control signaling.

12. A method according to any one of claims 7 to 11, wherein the terminal identity and/or the sequence code is a unique identity of the terminal, in one of the following ways:

13. The method according to claim 12, wherein the terminal identifier is a unique identifier of the terminal, and when the sequence code is the unique identifier of the terminal, the sequence code is used for the network side to identify the terminal identifier of the terminal according to the association relationship, and the terminal identifier is used for the network side to perform data transmission;

14. A terminal-initiated data transmission apparatus, comprising:

the terminal transmission module is used for carrying out data transmission by using the sequence code and/or the terminal identification associated with the terminal identification with the network side after the network side receives the sequence code;

the sending module is further configured to send the sequence code when receiving a command that the network side sends the sequence code, where the sequence code is used for the network side to perform uplink timing estimation.

15. The apparatus of claim 14, wherein the association relationship between the terminal identifier and the sequence code is predicted by the terminal and the network side;

16. The apparatus of claim 15, wherein the sending module is further configured to select a sequence code from a first resource pool selectable by the sequence code as a first sequence code to be sent when the association relationship between the terminal identifier and the sequence code is obtained through interaction between the terminal and the network side, where the first sequence code corresponds to a temporarily used terminal identifier, the temporarily used terminal identifier is used for the network side to allocate resources for transmitting the terminal identifier and a second sequence code, the association relationship exists between the first sequence code and the second sequence code, and the second sequence code and the temporarily used terminal identifier are used for the network side to allocate the terminal identifier for the terminal after confirming that the terminal accesses the network.

17. The apparatus of claim 14, wherein the command is physical layer signaling or layer 2 control signaling.

18. The apparatus according to any of claims 14 to 17, wherein the terminal identity and/or the sequence code is a unique identity of the terminal, and is one of:

19. The apparatus of claim 18, wherein the terminal identifier is a unique identifier of the terminal, and when the sequence code is the unique identifier of the terminal, the sequence code is used for the network side to identify the terminal identifier of the terminal according to the association relationship, and the terminal identifier is used for the network side to perform data transmission;

20. A terminal-initiated data transmission apparatus, comprising:

the network side transmission module is used for carrying out data transmission with the terminal by using the sequence code and/or the terminal identification associated with the terminal identification after the network side receives the sequence code;

the network side transmission module is further configured to instruct a terminal to send the sequence code, where the sequence code is used for the network side to perform uplink timing estimation.

21. The apparatus of claim 20, wherein the association relationship between the terminal identifier and the sequence code is predicted by the terminal and the network side;

22. The apparatus of claim 21, wherein the network side transmission module is further configured to, when the association relationship between the terminal identifier and the sequence code is known through terminal interaction with the network side:

23. The apparatus of claim 22, wherein the network side transmission module is further configured to release the first sequence code, the temporarily used terminal identifier, and the second sequence code back to a resource pool after allocating a terminal identifier to the terminal; or, releasing the first sequence code and the temporarily used terminal identifier back to the resource pool.

24. The apparatus of claim 20, wherein the command is physical layer signaling or layer 2 control signaling.

25. The apparatus according to any of claims 20 to 24, wherein the terminal identity and/or the sequence code is a unique identity of the terminal, and is one of:

26. The apparatus of claim 25, wherein the terminal identifier is a unique identifier of the terminal, and when the sequence code is the unique identifier of the terminal, the sequence code is used for the network side to identify the terminal identifier of the terminal according to the association relationship, and the terminal identifier is used for the network side to perform data transmission;