CN109005560B

CN109005560B - Data transmission and reception method, network device, user equipment, and storage medium

Info

Publication number: CN109005560B
Application number: CN201710419629.3A
Authority: CN
Inventors: 孙军帅; 王莹莹; 黄学艳
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2017-06-06
Filing date: 2017-06-06
Publication date: 2023-03-31
Anticipated expiration: 2037-06-06
Also published as: CN109005560A

Abstract

The invention discloses a data transmission and receiving method, a network device, a user device and a storage medium, the method comprises the following steps: acquiring data required to be transmitted to at least one user equipment; acquiring identification information of the at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell; and generating a Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) based on the identification information of the at least one user equipment and the data of the at least one user equipment, so as to transmit the data carried in the PDCP PDU to the at least one user equipment.

Description

Data transmission and reception method, network device, user equipment, and storage medium

Technical Field

The invention relates to a data transmission technology in the communication field, and more particularly, to a data transmission and reception method, a network device, a user equipment, and a storage medium.

Background

In the current 5G scheme of 3GPP, two packet services of URLLC and mMTC are introduced, and the packet services may have strong burstiness, namely have the characteristics of high timeliness, low time delay and the like. Certainly, there is a demand for faster data transmission, and there is no requirement for only packet data, and in the future 5G architecture, there is no specific scheme for how to efficiently transmit data over the air interface.

Disclosure of Invention

The present invention is directed to a data transmission and reception method, a network device, a user equipment, and a storage medium, which are used to solve the above problems in the prior art.

In order to achieve the above object, the present invention provides a data transmission method, applied to a network device, including:

acquiring data required to be transmitted to at least one user equipment;

acquiring identification information of the at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

generating a Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) based on the identification information of the at least one user equipment and the data of the at least one user equipment, so as to transmit the data carried in the PDCP PDU to the at least one user equipment

The invention provides a data receiving method, which is applied to user equipment and comprises the following steps:

receive to PDCP PDU;

analyzing the PDCP PDU to obtain the identification information of at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

and acquiring data corresponding to the identification information matched with the identification information of the user equipment based on the identification information of the user equipment.

The present invention provides a network device, comprising:

the data acquisition unit is used for acquiring data required to be transmitted to at least one user equipment;

an identification acquisition unit, configured to acquire identification information of the at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

a processing unit, configured to generate a PDCP PDU based on the identification information of the at least one ue and data of the at least one ue, so as to transmit the data carried in the PDCP PDU to the at least one ue.

The present invention provides a user equipment, comprising:

a receiving unit, configured to receive a PDCP PDU;

an analysis unit, configured to analyze the PDCP PDU to obtain identification information of at least one ue; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell; and acquiring data corresponding to the identification information matched with the identification information of the user equipment based on the identification information of the user equipment.

The invention provides a storage medium having a computer program stored thereon, wherein the computer program is adapted to perform the steps of any of the methods described above when executed by a processor.

The present invention provides a network device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the processor is adapted to perform the steps of any of the methods when executing the computer program.

The present invention provides a user equipment, comprising: a processor and a memory for storing a computer program operable on the processor, wherein the processor is operable to perform the steps of the method when executing the computer program.

Before transmitting PDCP PDU, at least one identification information corresponding to the user equipment is added in the PDU when the PDU is generated; the identification information only needs to characterize the user identity information within the cell in which the device is located. Thus, when transmitting data of the user equipment, especially packet data of the user equipment, since the identity information of the user equipment is added in the PDCP layer and the identity information only requires to be able to identify the identity of the user equipment in the cell, the length of the identity information is shorter than that of the identification information of the general user equipment, thereby reducing the part of content to be transmitted and ensuring efficient transmission of the data of the user equipment.

Drawings

FIG. 1 is a flow chart of a data transmission method according to an embodiment of the present invention;

FIG. 2 is a schematic view of a processing scenario of an embodiment of the present invention 1;

FIG. 3 is a schematic view of a processing scenario of an embodiment of the present invention 2;

FIG. 4 is a schematic illustration of a processing scenario according to an embodiment of the present invention 3;

FIG. 5 is a schematic view of a processing scenario of an embodiment of the present invention 4;

FIG. 6 is a schematic view of a processing scenario according to an embodiment of the present invention;

fig. 7 is a flow chart of a data receiving method according to an embodiment of the present invention;

FIG. 8 is a diagram illustrating a network device structure according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a user equipment composition structure according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The first embodiment,

An embodiment of the present invention provides a data transmission method, which is applied to a network device, and as shown in fig. 1, the method includes:

step 101: acquiring data required to be transmitted to at least one user equipment;

step 102: acquiring identification information of the at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

step 103: generating a Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) based on the identification information of the at least one user equipment and the data of the at least one user equipment, so as to transmit the data carried in the PDCP PDU to the at least one user equipment.

It should be noted that the network device in this embodiment may be a device having a PDCP function on a network side, for example, a device such as a base station and an eNB.

In step 101, the data of the at least one user equipment is obtained, which may specifically be at least one piece of data for each user equipment in the at least one user equipment. That is, in this embodiment, the number of data transmitted to the user equipment is not limited, and the data transmitted to several user equipments is not limited, and may be multiple pieces of data of one user equipment, or may be one piece of data of each of multiple user equipments. Wherein the plurality may be at least two.

In addition, the acquired data may be downlink transmission data, that is, data that needs to be transmitted from the base station side to the user equipment UE; specifically, the data may be acquired from a radio link control RRC layer.

Further, in the scheme provided in this embodiment, after acquiring data of at least one user equipment, a difference from the PDCP PDU generation method provided in the prior art is that in this embodiment, identification information of the user equipment is also added when generating a PDU. Namely, a UE identification field (UE identifier for PDCP) which can be identified by the PDCP is added in the PDCP PDU.

Specifically, the obtaining the identification information of the at least one ue in step 102 includes:

acquiring cell identification information of a cell in which the at least one user equipment is located; acquiring identity information adopted by the at least one user equipment in a cell in which the user equipment is located; respectively generating identification information of each user equipment in at least one user equipment based on the cell identification information and the identity information;

or,

acquiring identity information adopted by the at least one user equipment in a cell in which the at least one user equipment is located; based on the information on the identity of the user, generating identification information of at least one of the user equipments.

It should be noted that, in order to shorten the length of the UE identifier, it is only necessary to identify the UE identifier in the PDCP protocol layer, and it is not necessary to identify the UE identifier by RLC/MAC, and it is not necessary to identify all base stations, even all networks, so that the length of the UE identifier (identifier) is increased.

Specifically, the length of the UE identifier for PDCP is defined according to the number of users that the PDCP protocol layer needs to process, and is expressed as: PDCP _ UE _ ID.

The PDCP _ UE _ ID may be composed of a plurality of parameters or may be a single parameter. For example, the Cell ID (Cell identification information) + UE Index (intra-Cell identity information) may be combined, or only the UE Index may be used.

Identification of PDCP function (e.g., PID) + identification of user equipment at PDCP function. The identification of the PDCP function module may be defined when the RAN system is implemented, and the identification is not carried in the PDCP PDU any more, and is only used as a route of the PDCP PDU. The PDCP _ UE _ ID may be an identifier of the user in the PDCP function block.

Further, the identity information that is obtained and used by the ue in the cell may be generated in time, for example, the identity information for the ue may be generated based on the number of ues managed by the current cell when the ue accesses to a cell. The specific generation manner may be that, when a current user accesses the cell a, the cell a currently manages M user equipments UE, where M is an integer; then, after excluding the currently occupied digits, randomly or sequentially selecting one digit from the rest digits as the identity information of the user equipment accessing the cell A.

For example, before UE1 accesses, cell a manages 5 UEs, where the identity information corresponding to the 5 UEs is 1, 2 to 5; after UE1 accesses cell a, "6" may be used as the identity information of UE1 in this cell a.

In another case, the bit length of the user-characterized user identity information allocated to each cell is 3 bits, that is, 8 identity information may be represented, and each identity information may be 1 to 8. Before UE1 accesses, cell A manages 5 UEs, and the identity information is 1-5 respectively; before the UE1 accesses, if the UE2 leaves the cell a, deleting the identity information "2" of the UE2 in the cell a, that is, the number "2" is not currently allocated; at this time, UE1 accesses cell a, and at this time, a number may be randomly selected from 2, 6, 7, and 8 as the identity information of UE1 in cell a; alternatively, the first and second images may be arranged in descending order, "2" is chosen as the identity information of UE1 in cell a.

The above field length for representing the user identity information is an example, and actually, a longer field length may be used, for example, 10 bits may be available, but this embodiment is not exhaustive. It can be seen that the processing mode of identifying the user equipment by using the identity information in the cell can reduce the length of the identification information of the UE and the information length for identifying the user equipment, thereby improving the transmission and processing efficiency. UE identification field (UE) identifiable by PDCP identifier for PDCP) length is m bits. It is proposed that m be an integer multiple of bytes, i.e., 8bits,16bits,24bits,32bits, etc. The configuration may be performed in a signaling manner.

In the above step 103, the generating the PDCP PDU based on the identification information of the at least one ue and the data of the at least one ue includes the following two manners:

in a first way,

Generating at least one PDCP PDU for at least one user equipment based on the identification information of the at least one user equipment and the data of the at least one user equipment, respectively.

This way, it is characterized that, for each piece of data of each user equipment, generating a PDCP PDU; this approach is applicable to scenarios where PDCP is not concatenated, or can be understood to be more applicable to scenarios with large packets.

The big data packet may be measured by parameters such as a transmission bandwidth, a transmission rate, or a transmission delay, for example, the transmission bandwidth is greater than a certain bandwidth threshold, the transmission rate is greater than a certain rate threshold, and the transmission delay is less than a certain delay threshold, and the big data packet is determined by using a composition of one or more conditions. Alternatively, the determination may also be made by QCI.

If the PDCP is not concatenated, for example, referring to FIG. 2, a UE identity field (UE identifier for PDCP) that the PDCP can recognize is added between the D/C, R, PDCP SN field and Data field.

The second method,

Generating one PDCP PDU for at least one user equipment based on the identification information of the at least one user equipment and the data of the at least one user equipment.

In this way, at least one piece of data of a plurality of user equipments can be concatenated into one PDCP PDU for transmission.

For example, referring to fig. 3 and fig. 4, when PDCP is concatenated, a UE identification field (UE identifier for PDCP) may be concentrated in a header area of PDCP PDU as shown in fig. 3, and the identification field of the UE and Data of the UE are placed in an adjacent position, in the area, identification information of UE1 and Data (Data) of UE1 — identification information of UE n and Data of UEn may be set;

as shown in fig. 4, the identification information of the UE and the data of the UE may be set respectively, first, n pieces of identification information of the UE1 to UE n are set in a preset identification region, and then, in the data region, the data of the n pieces of UE are set according to the placement order of the identification information of the UE1 to UE n.

It should be further noted that the D/C domain, the R domain, the PDCP SN domain and the Data domain in fig. 2-4 are determined by the existing LTE definition or the definition of the 5G final protocol, and the present invention does not define and constrain them.

In this processing mode, it may also be determined whether the data to be transmitted is packet data, specifically: generating a PDCP PDU based on the identification information of the at least one user equipment and data of the at least one user equipment, so as to transmit the data carried in the PDCP PDU to the at least one user equipment, wherein the method further includes:

acquiring the service characteristics of the data of the at least one user equipment;

and when the data is determined to be packet data based on the service characteristics, generating a PDCP PDU based on the identification information of the at least one user equipment and the data of the at least one user equipment, so as to transmit the data carried in the PDCP PDU to the at least one user equipment.

The service characteristics may be transmission bandwidth, transmission delay, transmission rate, and the like, and may further include QCI, and the like. This embodiment is not limited. That is, in this processing method, it may be determined whether the PDU is small data or not, and if so, a processing method in which a plurality of pieces of data are put in the same PDU in this method may be adopted.

The acquiring data to be transmitted to at least one user equipment includes:

receiving and buffering data to be transmitted to at least one user equipment in each PDCP PDU transmission period; the transmission period may be set according to actual conditions.

Correspondingly, the generating of one PDCP PDU for at least one user equipment based on the identification information of the at least one user equipment and the data of the at least one user equipment comprises:

and at the end of each PDCP PDU transmission period, generating one PDCP PDU aiming at least one user equipment based on the identification information of the at least one user equipment and the data of the at least one user equipment.

Or,

the acquiring data to be transmitted to at least one user equipment includes:

receiving and caching data to be transmitted to at least one user device, and recording the quantity of the cached data;

correspondingly, the generating one PDCP PDU for at least one user equipment based on the identification information of the at least one user equipment and the data of the at least one user equipment includes:

and when the amount of the buffered data reaches a preset amount threshold value and each PDCP PDU transmission period is finished, generating one PDCP PDU aiming at least one user equipment based on the identification information of the at least one user equipment and the buffered data of the at least one user equipment.

On the basis of the foregoing processing manner, if the user information security is ensured, the UE Identifier for PDCP may be placed before and after the Ciphering, as shown in fig. 5 and 6.

Correspondingly, on the user equipment side, the UE Identifier for PDCP is added before the addition of the PDCP Header, and is removed after the removal of the PDCP Header.

Therefore, by adopting the scheme, before the PDCP PDU is transmitted, the identification information corresponding to at least one user equipment can be added in the PDU when the PDU is generated; the identification information only needs to characterize the identity information within the cell where the user equipment is located. In this way, when transmitting data of the user equipment, especially packet data of the user equipment, since the identity information of the user equipment is added in the PDCP layer, the data of the user equipment can be efficiently transmitted, and a part of content to be transmitted is reduced.

Example II,

An embodiment of the present invention provides a data receiving method, which is applied to user equipment, and as shown in fig. 7, the data receiving method includes:

step 701: receiving a PDCP PDU;

step 702: analyzing the PDCP PDU to obtain the identification information of at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

step 703: and acquiring data corresponding to the identification information matched with the identification information of the user equipment based on the identification information of the at least one user equipment.

It should be noted that the network device in this embodiment may be a device having a PDCP function on a network side, for example, a device such as a base station and an eNB. The user equipment refers to a PDCP-enabled device, and may be a mobile phone, for example.

The obtaining of the PDCP PDU may be analyzing data received through an air interface from the MAC layer or the RLC layer.

In addition, the acquired data may be downlink data, that is, data that needs to be transmitted from the base station side to the user equipment UE.

The analyzing and obtaining the identification information of at least one user equipment from the PDCP PDU comprises:

extracting an identification information field from the PDCP PDU; extracting cell identification information and identity information of at least one user equipment from the identification information field;

or, extracting an identification information field from the PDCP PDU; and directly extracting the identity information of at least one user equipment from the identification information field.

It should be noted that, in order to shorten the length of the UE identifier, it is only necessary to identify the UE identifier in the PDCP protocol layer, and it is not necessary to identify the UE identifier by RLC/MAC, and it is not necessary to identify all base stations, even all networks, so that the length of the UE identifier is increased.

Specifically, the identification information field may be extracted from a preset identification area of the user equipment. Defining the length of the UE identifier for PDCP according to the number of users needing to be processed by the PDCP protocol layer, and expressing that: PDCP _ UE _ ID.

Identification of PDCP function + identification of user equipment at PDCP function. The identification of the PDCP function module may be defined when the RAN system is implemented, and the identification is not carried in the PDCP PDU any more, and is only used as the route of the PDCP PDU. The PDCP _ UE _ ID may be the identity of the user in the PDCP function module.

The parsing of the PDCP PDU to obtain the identification information of at least one ue further comprises:

after the data of at least one user device is decrypted, the identification information of the at least one user device is extracted;

or before the data of the at least one user equipment is subjected to decryption processing, the identification information of the at least one user equipment is extracted.

That is, on the basis of the foregoing processing manner, if the UE Identifier for PDCP may be placed before and after the cryptography in order to ensure the user information security, as shown in fig. 5 and fig. 6. Therefore, on the user equipment side, the UE Identifier for PDCP is added before the addition of the PDCP Header, and is removed after the removal of the PDCP Header.

Therefore, by adopting the scheme, when the PDCP PDU is received, the corresponding data can be identified through the identification information corresponding to at least one user equipment contained in the PDCP PDU; and the identification information only needs to characterize the identity information in the cell where the user equipment is located. In this way, when transmitting data of the user equipment, especially packet data of the user equipment, since the identity information of the user equipment is added in the PDCP layer, the data of the user equipment can be efficiently transmitted, and a part of content to be transmitted is reduced.

Example III,

An embodiment of the present invention provides a network device, as shown in fig. 8, including:

a data obtaining unit 81, configured to obtain data to be transmitted to at least one user equipment;

an identification obtaining unit 82, configured to obtain identification information of the at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

a processing unit 83, configured to generate a PDCP PDU based on the identification information of the at least one ue and data of the at least one ue, so as to transmit the data carried in the PDCP PDU to the at least one ue.

The data obtaining unit 81 is configured to obtain at least one piece of data for each piece of user equipment in at least one piece of user equipment. That is, in this embodiment, the number of data transmitted to the user equipment is not limited, and data transmitted to several user equipments is not limited, and may be multiple pieces of data of one user equipment, or may be one piece of data of each of multiple user equipments. Wherein the plurality may be at least two.

Specifically, the identifier obtaining unit 82 is configured to obtain cell identifier information of a cell in which the at least one ue is located; acquiring identity information adopted by the at least one user equipment in a cell in which the at least one user equipment is located; respectively generating identification information of each user equipment in at least one user equipment based on the cell identification information and the identity information;

or,

acquiring identity information adopted by the at least one user equipment in a cell in which the at least one user equipment is located; and generating identification information of at least one user equipment based on the identity information.

The PDCP _ UE _ ID may be composed of a plurality of parameters or may be a single parameter. For example, the Cell ID (Cell identification information) + UE Index (intra-Cell identity information) may be compositely formed, or only the UE Index may be formed.

Identification of PDCP function + identification of user equipment at PDCP function. The identification of the PDCP function module may be defined when the RAN system is implemented, and the identification is not carried in the PDCP PDU any more, and is only used as a route of the PDCP PDU. The PDCP _ UE _ ID may be the identity of the user in the PDCP function module.

Further, the identity information adopted by the user equipment in the cell in which the user equipment is located may be generated in time, for example, the identity information for the user equipment may be generated based on the number of user equipments managed by the current cell when the user equipment is accessed to one cell. The specific generation manner may be that, when a current user accesses the cell a, the cell a currently manages M user equipments UE, where M is an integer; then, after excluding the currently occupied digits, randomly or sequentially selecting one digit from the rest digits as the identity information of the user equipment accessing the cell A.

For example, before UE1 accesses, cell a manages 5 UEs, where the identity information corresponding to the 5 UEs is 1, 2-5; after UE1 accesses cell a, "6" may be used as the identity information of UE1 in this cell a.

In another case, the bit length of the identity information of the user that can be used and is allocated to each cell to characterize the user is 3 bits, that is, 8 pieces of identity information may be represented, and may be 1 to 8, respectively. Before UE1 accesses, cell A manages 5 UEs, and the identity information is 1-5 respectively; before UE1 accesses, UE2 leaves the cell A, then the identity information "2" of UE2 in the cell A is deleted, that is, the number "2" is not currently allocated; at this time, UE1 accesses cell a, and at this time, a number may be randomly selected from 2, 6, 7, and 8 as the identity information of UE1 in cell a; alternatively, "2" may be selected as the identity information of UE1 in cell a in order from small to large.

The above field length for representing the user identity information is an example, and actually, a longer field length may be used, for example, 10 bits may be available, but this embodiment is not exhaustive. It can be seen that the processing mode of identifying the user equipment by using the identity information in the cell can reduce the length of the identification information of the UE and the information length for identifying the user equipment, thereby improving the transmission and processing efficiency. The UE identification field (UE identifier for PDCP) that the PDCP can identify is m bits long. It is proposed that m be an integer multiple of bytes, i.e., 8bits,16bits,24bits,32bits, etc. The configuration may be performed in a signaling manner.

The processing unit 83 is configured to execute the following two modes:

in a first way,

Generating at least one PDCP PDU for at least one user equipment based on the identification information of the at least one user equipment and data of the at least one user equipment, respectively.

The method is characterized in that a PDCP PDU is generated for each piece of data of each piece of user equipment; this approach is applicable to scenarios where PDCP is not concatenated, or can be understood to be more applicable to scenarios with large packets.

The big data packet may be measured by parameters such as a transmission bandwidth, a transmission rate, or a transmission delay, for example, the transmission bandwidth is greater than a certain bandwidth threshold, the transmission rate is greater than a certain rate threshold, and the transmission delay is less than a certain delay threshold, and the big data packet is determined by using a combination of one or more conditions. Alternatively, the determination may also be made by QCI.

The second method,

For example, referring to fig. 3 and 4, when PDCP is concatenated, a UE identification field (UE identifier for PDCP) may be concentrated in a header area of PDCP PDU as shown in fig. 3, and the identification field of the UE and Data of the UE are placed in adjacent positions, in the area, identification information of UE1 and Data (Data) of UE1 — identification information of UE n and Data of UE n may be set;

as shown in fig. 4, the identification information of the UE and the data of the UE may also be set separately, where n pieces of identification information of the UEs 1 to n are set in a preset identification region first, and the data of the n pieces of UE are set in the data region successively according to the placement order of the identification information of the UEs 1 to n.

It should be further noted that the D/C domain, the R domain, the PDCP SN domain, and the Data domain in fig. 2-4 are determined by the definition of the existing LTE or the definition of the 5G final protocol, which is not defined or restricted by the present invention.

In this processing mode, the processing unit 83 is configured to obtain a service feature of data of the at least one ue;

The data acquisition unit is used for receiving and buffering data to be transmitted to at least one user equipment in each PDCP PDU transmission period; the transmission period may be set according to actual conditions.

Correspondingly, the processing unit is configured to generate one PDCP PDU for at least one user equipment based on the identification information of the at least one user equipment and the data of the at least one user equipment at the end of each PDCP PDU transmission period.

Or,

the data acquisition unit is used for receiving and caching data to be transmitted to at least one piece of user equipment, and recording the quantity of the cached data;

correspondingly, the processing unit is configured to generate one PDCP PDU for the at least one ue based on the identification information of the at least one ue and the buffered data of the at least one ue when the amount of buffered data reaches a preset amount threshold and each PDCP PDU transmission cycle ends.

Correspondingly, on the user equipment side, the UE Identifier for PDCP is added before the PDCP Header is added, and is removed after the PDCP Header is removed.

Example four,

An embodiment of the present invention provides a user equipment, as shown in fig. 9, including:

a receiving unit 91, configured to receive a PDCP PDU;

an analyzing unit 92, configured to analyze the PDCP PDU to obtain identification information of at least one ue; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell; and acquiring data corresponding to the identification information matched with the identification information of the user equipment based on the identification information of the user equipment.

The parsing unit 92 is configured to extract an identification information field from the PDCP PDU; extracting cell identification information and identity information of at least one user equipment from the identification information field;

The parsing unit 92 is configured to extract the identification information of the at least one ue after performing decryption processing on the data of the at least one ue;

That is, on the basis of the foregoing processing manner, if the UE Identifier for PDCP entity is to ensure the user information security, it can be placed before and after the Ciphering, as shown in fig. 5 and 6. Therefore, on the user equipment side, the UE Identifier for PDCP is added before the addition of the PDCP Header, and is removed after the removal of the PDCP Header.

Therefore, by adopting the scheme, when the PDCP PDU is received, the corresponding data of the PDCP PDU can be identified through the identification information corresponding to at least one user equipment contained in the PDCP PDU; and the identification information only needs to characterize the identity information in the cell where the user equipment is located. In this way, when transmitting data of the user equipment, especially packet data of the user equipment, since the identity information of the user equipment is added in the PDCP layer, the data of the user equipment can be efficiently transmitted, and a part of content to be transmitted is reduced.

Embodiments of the present invention can also provide a storage medium having a computer program stored thereon, wherein the computer program is configured to implement the steps of any one of the methods described above when executed by a processor.

In an exemplary embodiment, the present invention further provides a computer readable storage medium, for example, a memory including a computer program, which is executable by a processor to perform the steps of the foregoing method. The computer readable storage medium can be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM; or may be a variety of devices including one or any combination of the above memories, such as a mobile phone, computer, tablet device, personal digital assistant, etc.

A storage medium of an embodiment of the present invention has a computer program stored thereon, and when executed by a processor, executes:

acquiring data to be transmitted to at least one user equipment;

acquiring identification information of each user equipment in the at least one user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

and generating a Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) based on the identification information of the at least one user equipment and the data of the at least one user equipment, so as to transmit the data carried in the PDCP PDU to the at least one user equipment.

The foregoing storage medium may be applied to a network device, and the processing that can be executed by the storage medium may further include all the processing described in the first embodiment, which is not described herein again. A (c)

In another scenario, the storage medium is applied to a user equipment, and specifically:

a storage medium having stored thereon a computer program which, when executed by a processor, performs:

receiving a PDCP PDU;

The program that can be stored in the storage medium at this time enables the processing performed by the processing to be as described in embodiment two, and the description thereof is not repeated here.

the processor is used for executing and acquiring data required to be transmitted to at least one user device when the computer program is run;

The present invention provides a user equipment, comprising: a processor and a memory for storing a computer program operable on the processor, wherein the processor is operable when executing the computer program to perform:

receiving a PDCP PDU;

In addition, the specific functions that can be executed by the processor in the user equipment and the network equipment are the same as those in the first embodiment and are not described again.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, an apparatus, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A data transmission method is applied to network equipment, and is characterized in that the method comprises the following steps:

acquiring data required to be transmitted to a plurality of user equipment; the data of the user equipment are obtained from a radio link control RRC layer;

acquiring identification information of each user equipment in the plurality of user equipments; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

acquiring service characteristics of data of the plurality of user equipment; when the data is determined to be packet data based on the service characteristics, generating a Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) based on the identification information of the plurality of user equipment and the data of the plurality of user equipment, transmitting at least one piece of data of the plurality of user equipment through one PDCP PDU, and transmitting the data carried in the PDCP PDU to the plurality of user equipment through an air interface;

the data carried in the PDCP PDU at least comprises identification information of the user equipment added in a PDCP protocol layer; the identification information of the user equipment is a UE identification field which can be identified by a PDCP protocol layer and cannot be identified by a radio link layer control RLC layer or a medium access control MAC layer; the length of the UE identification field is determined according to the number of users needing to be processed by the PDCP protocol layer.

2. The method of claim 1, wherein the obtaining identification information of each of the plurality of user equipments comprises:

acquiring cell identification information of cells in which the plurality of user equipment are located; acquiring identity information adopted by the user equipment in a cell where the user equipment is located; respectively generating identification information of each user equipment in a plurality of user equipments based on the cell identification information and the identity information;

or,

acquiring identity information adopted by the user equipment in a cell where the user equipment is located; and generating identification information of a plurality of user equipment based on the identity information.

3. The method of claim 1, wherein generating the PDCP PDU based on the identification information of the plurality of user equipments and the data of the plurality of user equipments comprises:

generating a plurality of PDCP PDUs for a plurality of user equipments based on the identification information of the plurality of user equipments and the data of the plurality of user equipments, respectively;

or,

generating one PDCP PDU for a plurality of user equipments based on the identification information of the plurality of user equipments and the data of the plurality of user equipments.

4. The method of claim 3, wherein obtaining data required to be transmitted to a plurality of user equipments comprises:

receiving and buffering data to be transmitted to a plurality of user equipment in each PDCP PDU transmission period;

generating one PDCP PDU for a plurality of user equipments based on the identification information of the plurality of user equipments and the data of the plurality of user equipments, including:

and at the end of each PDCP PDU transmission period, generating one PDCP PDU aiming at a plurality of user equipment based on the identification information of the plurality of user equipment and the data of the plurality of user equipment.

5. The method of claim 3, wherein obtaining data to be transmitted to a plurality of user devices comprises:

receiving and caching data to be transmitted to a plurality of user equipment, and recording the quantity of the cached data;

and when the number of the buffered data reaches a preset number threshold value and each PDCP PDU transmission period is finished, generating one PDCP PDU aiming at a plurality of user equipment based on the identification information of the plurality of user equipment and the buffered data of the plurality of user equipment.

6. A data receiving method is applied to user equipment, and is characterized in that the method comprises the following steps:

receiving a PDCP PDU through an air interface, wherein the PDCP PDU is generated by network equipment based on identification information of a plurality of user equipment and data of the plurality of user equipment, at least one piece of data of the plurality of user equipment is transmitted through one PDCP PDU, and the data of the plurality of user equipment is data acquired from an RRC layer; the data carried in the PDCP PDU at least comprises identification information of the user equipment added in a PDCP protocol layer;

analyzing and obtaining identification information of a plurality of user equipment from the PDCP PDU; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell; the identification information of the user equipment is a UE identification field which can be identified by a PDCP protocol layer and cannot be identified by a radio link layer control RLC layer or a medium access control MAC layer; the length of the UE identification domain is determined according to the number of users needing to be processed by a PDCP protocol layer;

7. The method as claimed in claim 6, wherein the parsing the identification information of the plurality of user equipments from the PDCP PDU comprises:

extracting an identification information field from the PDCP PDU; extracting cell identification information and identity information of a plurality of user equipment from the identification information field;

or, extracting an identification information field from the PDCP PDU; and directly extracting the identity information of the plurality of user equipment from the identification information field.

8. The method according to claim 6 or 7, wherein the parsing the identification information of the plurality of user equipments from the PDCP PDU further comprises:

extracting identification information of a plurality of user equipment after performing decryption processing on data of the plurality of user equipment;

alternatively, before performing decryption processing on data of a plurality of user equipments, identification information of the plurality of user equipments is extracted.

9. A network device, comprising:

the data acquisition unit is used for acquiring data required to be transmitted to a plurality of user equipment; the data of the user equipment are obtained from a radio link control (RRC) layer;

an identification acquisition unit configured to acquire identification information of each of the plurality of user equipments; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell;

the processing unit is used for acquiring the service characteristics of the data of the plurality of user equipment; when the data is determined to be packet data based on the service characteristics, generating a PDCP PDU based on the identification information of the plurality of user equipments and the data of the plurality of user equipments, transmitting at least one piece of data of the plurality of user equipments through one PDCP PDU, and transmitting the data carried in the PDCP PDU to the plurality of user equipments through an air interface; the data carried in the PDCP PDU at least comprises identification information of the user equipment added in a PDCP protocol layer;

the identification information of the user equipment is a UE identification field which can be identified by a PDCP protocol layer and cannot be identified by a radio link layer control RLC layer or a medium access control MAC layer; the length of the UE identification field is determined according to the number of users needing to be processed by the PDCP protocol layer.

10. The network device according to claim 9, wherein the identifier obtaining unit is configured to obtain cell identifier information of a cell in which the plurality of user equipments are located; acquiring identity information adopted by the user equipment in a cell where the user equipment is located; respectively generating identification information of each user equipment in a plurality of user equipments based on the cell identification information and the identity information;

or,

11. The network device of claim 9, wherein the processing unit is configured to generate a plurality of PDCP PDUs for a plurality of user equipments based on the identification information of the plurality of user equipments and the data of the plurality of user equipments, respectively;

or,

generating one PDCP PDU for a plurality of user equipments based on the identification information of the plurality of user equipments and data of the plurality of user equipments.

12. The network device of claim 11, wherein the data obtaining unit is configured to receive and buffer data to be transmitted to a plurality of user equipments in each PDCP PDU transmission period;

correspondingly, the processing unit is configured to generate one PDCP PDU for the multiple user equipments based on the identification information of the multiple user equipments and the data of the multiple user equipments at the end of each PDCP PDU transmission period.

13. The network device according to claim 11, wherein the data obtaining unit is configured to receive and buffer data that needs to be transmitted to a plurality of user devices, and record the amount of the buffered data;

correspondingly, the processing unit is configured to generate one PDCP PDU for the multiple user equipments based on the identification information of the multiple user equipments and the buffered data of the multiple user equipments when the number of buffered data reaches a preset number threshold and each PDCP PDU transmission cycle ends.

14. A user device, comprising:

a receiving unit, configured to receive a PDCP PDU through an air interface, where the PDCP PDU is generated by a network device based on identification information of multiple user equipment and data of the multiple user equipment, at least one piece of data of the multiple user equipment is transmitted through one PDCP PDU, and the data of the multiple user equipment is data obtained from an RRC layer; the data carried in the PDCP PDU at least comprises identification information of the user equipment added in a PDCP protocol layer;

the analysis unit is used for analyzing the PDCP PDU to obtain the identification information of a plurality of user equipment; the identification information of the user equipment is used for identifying the identity of the user equipment in the current cell; the identification information of the user equipment is a UE identification field which can be identified by a PDCP protocol layer and cannot be identified by a radio link layer control RLC layer or a medium access control MAC layer; the length of the UE identification domain is determined according to the number of users needing to be processed by a PDCP protocol layer; and acquiring data corresponding to the identification information matched with the identification information of the user equipment based on the identification information of the user equipment.

15. The UE of claim 14, wherein the parsing unit is configured to extract an identification information field from the PDCP PDUs; extracting cell identification information and identity information of a plurality of user equipment from the identification information field;

16. The UE of claim 14 or 15, wherein the parsing unit is configured to extract identification information of a plurality of UEs after performing decryption processing on data of the UEs;

alternatively, before decryption processing is performed on data of a plurality of user equipments, identification information of the plurality of user equipments is extracted.

17. A storage medium having a computer program stored thereon, the computer program, when being executed by a processor, performing the steps of the method as set forth in any one of the claims 1 to 8.

18. A network device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the processor is adapted to perform the steps of the method of any one of claims 1 to 5 when running the computer program.

19. A user device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the processor is adapted to perform the steps of the method of any one of claims 6 to 8 when running the computer program.