CN115766909A - Data processing method, device and equipment applied to media access control layer - Google Patents

Abstract

The application discloses a data processing method, device and equipment applied to a medium access control layer, and relates to the field of wireless communication. The method is applied to a terminal device, and the method includes: receiving from the physical layer the i-th code block of the transmission block used to carry the PDU of the media access control layer, the transmission block includes n code blocks, and i is A positive integer not greater than n, where n is a positive integer; parse the i-th code block according to the parsing progress indication of the transport block to obtain a first PDU data segment; update the An indication of the parsing progress of the transport block. This method can process the MAC PDU according to the CB, so as to relieve the memory access pressure.

Description

Data processing method, device and equipment applied to media access control layer

technical field

The present application relates to the field of wireless communication, and in particular to a data processing method, device and equipment applied to a media access control layer.

Background technique

LTE (Long Term Evolution, Long Term Evolution) is a long-term evolution of the Universal Mobile Telecommunications System (UMTS) technical standard formulated by the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GGP) organization.

According to the LTE user plane protocol, the HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) retransmission of the network equipment MAC (Media Access Control, media access control) layer and physical layer (Physical Layer, PHY) is based on CBG (Code Block Group, code block group). In the processing flow of the downlink data packet, the physical layer of the terminal receives a TB (Transport Block, transport block) sent by the network device. When part of the CB (Code Block, code block) in the TB has a transmission error, the physical layer caches the TB and waits for the retransmission of the CB that failed to receive the part. When the TB is completely received, the PHY will submit the TB to the MAC layer. The MAC layer processes TBs. As a result, the peak pressure of DDR (Double Data Rate, double rate) memory access will be generated.

Contents of the invention

The embodiment of the present application provides a data processing method, device and equipment applied to the media access control layer, which can process MAC PDU (Protocol Data Unit, protocol data unit) according to CB, and reduce memory access pressure. Described technical scheme is as follows:

According to one aspect of the present application, a data processing method applied to a media access control layer is provided, the method comprising:

receiving from the physical layer the i-th code block of the transport block for carrying the PDU of the media access control layer, where the transport block includes n code blocks, i is a positive integer not greater than n, and n is a positive integer;

Parsing the ith code block according to the parsing progress indication of the transport block to obtain the first PDU data segment;

updating the parsing progress indication of the transport block according to the first PDU data segment.

According to one aspect of the present application, a data processing device applied to a media access control layer is provided, the device comprising:

A header extraction module, configured to receive from the physical layer the i-th code block of the transmission block used to carry the PDU of the medium access control layer, the transmission block includes n code blocks, and i is a positive value not greater than n Integer, n is a positive integer;

The header extraction module is configured to parse the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment;

The header extraction module is configured to update the parsing progress indication of the transport block according to the first PDU data segment.

According to one aspect of the present application, a terminal device is provided, and the terminal device includes: a processor; wherein,

The processor is configured to receive from the physical layer the i-th code block of the transmission block used to carry the PDU of the media access control layer, the transmission block includes n code blocks, and i is a positive value not greater than n Integer, n is a positive integer;

The processor is configured to parse the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment;

The processor is configured to update the parsing progress indication of the transport block according to the first PDU data segment.

According to one aspect of the present application, a computer-readable storage medium is provided, wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to implement the application described in the above aspect A data processing method at the media access control layer.

According to one aspect of the embodiments of the present application, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a computer device, it is used to implement the application described in the above aspect The data processing method of the media access control layer.

According to one aspect of the present application, a computer program product is provided. When the computer program product runs on a processor of a computer device, the computer device executes the data processing method applied to the medium access control layer described in the above aspect.

The technical solutions provided by the embodiments of the present application at least include the following beneficial effects:

By receiving the CB of the TB carrying the MAC PDU from the PHY, the MAC PDU is analyzed with the CB as the analysis object, and the headers of each layer and the PDCP PDU are obtained. Among them, since the fields contained in the CB may be incomplete, for example, if a field is divided into two parts by two adjacent CBs, when processing the previous CB, the parsing progress indication of the TB is updated according to the processing result of the CB, and parsing The progress indicator is used to store the processing status of the CB. When processing the next CB, read the unparsed fields of the previous CB according to the parsing progress indication, and splicing with the next CB to obtain complete fields for parsing. Therefore, the method provided in the embodiment of the present application can process the CBs of TBs one by one based on the TB parsing progress indication, so that the PHY can transmit a CB to the upper layer every time it receives a CB, reducing the processing pressure on the memory of the terminal device and reducing the data Packet delivery delay and modem power consumption.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a system architecture provided by an exemplary embodiment of the present application;

FIG. 2 is a schematic diagram of a user plane protocol provided by an exemplary embodiment of the present application;

FIG. 3 is a schematic diagram of a MAC PDU provided by an exemplary embodiment of the present application;

FIG. 4 is a schematic diagram of an RLC PDU provided by an exemplary embodiment of the present application;

FIG. 5 is a schematic diagram of a PDCP PDU provided by an exemplary embodiment of the present application;

FIG. 6 is a schematic diagram of MAC PDU and CB mapping provided by an exemplary embodiment of the present application;

FIG. 7 is a flowchart of a data processing method applied to a media access control layer provided by an exemplary embodiment of the present application;

FIG. 8 is a schematic diagram of a data processing method applied to a media access control layer provided by an exemplary embodiment of the present application;

FIG. 9 is a schematic diagram of a data processing method applied to a media access control layer provided by an exemplary embodiment of the present application;

FIG. 10 is a flowchart of a data processing method applied to a media access control layer provided by an exemplary embodiment of the present application;

FIG. 11 is a schematic diagram of a data processing method applied to a media access control layer provided by an exemplary embodiment of the present application;

Fig. 12 is a schematic diagram of a parsing progress indication of a data processing method applied to a media access control layer provided by an exemplary embodiment of the present application;

Fig. 13 is a structural block diagram of a data processing device applied to a medium access control layer provided by an exemplary embodiment of the present application;

Fig. 14 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

Please refer to FIG. 1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a terminal device 10 and a network device 20 .

The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each network device 20 . The terminal device 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, as well as various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS) and so on. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as terminal devices.

The network device 20 is a device deployed in an access network to provide a wireless communication function for the terminal device 10 . The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points and so on. In systems using different radio access technologies, the names of devices with network device functions may be different, for example, in 5G NR systems, they are called gNodeB or gNB. The term "network equipment" may change as communications technology evolves. For the convenience of description, in the embodiment of the present application, the above-mentioned devices that provide the wireless communication function for the terminal device 10 are collectively referred to as network devices.

The system in the embodiments of the present disclosure may be called an LTE system, a 5G system or an NR system, but those skilled in the art can understand the meaning. The technical solution described in the embodiments of the present disclosure may be applicable to the LTE system, the 5G NR system, or the subsequent evolution system of the 5G NR system.

The LTE user plane protocol stack is shown in Figure 2. In the processing flow of the downlink data packet, the PHY of the terminal device 10 receives the air interface data sent by the network device 20, the PHY submits the air interface data to the MAC layer, and the MAC layer parses the MACSub Header (subheader) from the air interface data to obtain the MAC CE (MAC Control Element, MAC control unit) and MACSDU (ServiceData Unit, service data unit) information, RLC (Radio Link Control, radio link layer control protocol) layer is responsible for parsing RLCHeader (header), RLC PDU (Protocol Data Unit , Protocol Data Units) are sorted and submitted to the PDCP (Packet Data Convergence Protocol, Packet Data Convergence Protocol) layer in sequence. Parse the PDCPHeader at the PDCP layer, then decompress the data packet header, decrypt the data packet, and check the integrity protection, etc., and then submit it to the TCP/IP (Transmission Control Protocol/Internet Protocol) protocol stack .

The format of the MAC PDU submitted by the PHY to the MAC layer in 3GPP (3rd Generation Partnership Project) 36.321 is shown in Figure 3. The MAC PDU includes MAC Header, MAC CE, MAC SDU and Padding.

RLC is the radio link control layer of the user plane of the LTE protocol stack. The RLC header format has multiple formats depending on the mode. FIG. 4 is a format of the RLC PDU of 3GPP36.322AM (Ack Mode, confirmation mode). The Header part is divided into a FixHeader (fixed header) 30 and an extension part 40 . The extension part 40 includes length information of RLC SDUs.

According to 3GPP 36.323, after PDCP receives the RLC SDU submitted by RLC, it needs to parse the PDCP header, obtain the PDCPSN (Serial Number, serial number), and then calculate the HFN (Hyper Frame Number, super frame number) to obtain the count (count) value of PDCP SDU , the decipher (decryption) module of PDCP performs decryption and integrity protection verification based on the count value. One of the formats of PDCPheader (12bitSN) is shown in Figure 5.

In the method in the related art, the HARQ retransmission of the network device MAC layer and the physical layer PHY is based on CBG. Most of the data of a TB may have been received, and only part of the CB has a transmission error, but the entire TB is stored in the PHY. It is not submitted to the MAC layer, so a large amount of cache needs to be reserved in the PHY. When the TB is completely received, the PHY submits the TB to the MAC layer. The MAC layer and the RLC layer decode a batch of data packets and submit them to the cipher (decryption) module of the PDCP layer, thereby generating DDR (Double Data Rate) access. The peak pressure, and caused the packet delivery delay and modem (modem) power consumption.

Based on the analysis of the methods in the related art, the embodiment of the present application provides a MAC PDU parsing and processing solution based on PHY and submitted by CB. As shown in Figure 6, taking the case where one TB is divided into four CBs as an example, the TB includes CB0, CB1, CB2, and CB3; wherein, CB0 and CB1 divide CCCH (Common Control Channel, common control channel) into Two parts, CB1 and CB2 divide the segment of the RLC SDU into two parts at position 2, and CB2 and CB3 divide the RLC FixHeader into two parts at position 3. Since the PDU can only be parsed according to the protocol format when the CB is in order, if the HARQ retransmission occurs in the CB1, the PDU processing will be pending (waiting) on the CCCH until the CB1 receives it or the TB fails to receive it. Based on the above analysis, the embodiment of the present application will solve the technical problem that the PDU is divided by the CB when parsing the MAC PDU.

Please refer to FIG. 7 , which shows a flow chart of a data processing method applied to a media access control layer provided by an embodiment of the present application. The method can be applied to a terminal device in the system architecture shown in FIG. 1 . The method includes the following steps.

Step 210: Receive the ith CB of the TB used to carry the MAC PDU from the PHY, the TB includes n CBs, i is a positive integer not greater than n, and n is a positive integer.

Terminal equipment includes PHY, MAC layer, RLC layer and PDCP layer. Wherein, a header extraction module (or called "Header extract module") is set in the MAC layer, and a decryption module (or called "decipher module" or "cipher module") is set in the PDCP layer.

Exemplarily, the method may be executed by the MAC layer, or by other higher layers above the PHY.

Exemplarily, the method can be executed by a header extraction module in the MAC layer. Exemplarily, the header extraction module can also be replaced with other modules, protocol stacks, etc. having the same function. The header extraction module is used to extract and analyze the header of the TB or CB transmitted by the PHY to the MAC layer, and obtain at least one of the MAC header, RLC header, PDCP header, PDCP PDU, PDCP Count value, and HFN.

Exemplarily, when the TB is not divided into CBs, the PHY receives the TB carrying the MAC PDU, and transmits the TB to the header extraction module of the MAC layer.

Step 220: Parse the i-th CB according to the parsing progress indication of the TB to obtain the first PDU data segment, and update the parsing progress indication of the TB according to the first PDU data segment.

Exemplarily, the first PDU data segment includes the data segment of the MAC PDU obtained by parsing the i-th CB. The first PDU data segment includes part or all of the data in the MAC PDU. Exemplarily, the MAC PDU includes various fields, for example, the MAC PDU includes at least one field among a MAC header, an RLC header, an RLC PDU, a PDCP header, and a PDCP PDU. The first PDU data segment includes part or all of the above at least one field. For example, the first PDU data segment may include a complete MAC header and a partial RLC header.

The parsing progress indication of the TB is used to indicate the CB processing status of the TB, or indicate the parsing progress of the TB. Exemplarily, the parsing progress indication is used to indicate the end position of the currently processed CB of the TB, that is, the parsing progress indication is used to indicate which field of the MAC PDU the CB processing of the current TB ends. Exemplarily, the parsing progress indication is used to indicate the current parsing progress of the MAC PDU.

Since a complete field of the MAC PDU will be divided into two parts by two adjacent CBs, for example, the RLC Header is divided into the first part and the second part by CB0 and CB1, CB0 contains the first part of the RLC Header, and CB1 contains the The second part of the RLC Header. When parsing CB0, because the RLC Header data is incomplete, parsing cannot be performed, then after processing CB0, update the parsing progress indication of TB to stop at RLC Header, then when CB1 is received, it can be parsed according to TB Progress indication: stop at the RLC Header, read the first part of the unprocessed stop at the RLC Header in CB0, splice with CB1 to obtain a complete stop at the RLC Header, and then analyze and process the spliced CB1 to complete the Parsing and processing of MAC PDU at CB granularity.

Based on the parsing progress indication of the TB, when the header extraction module of the MAC layer receives the i-th CB of the TB, it can determine the intermediate state of the CB processing in the TB according to the current parsing progress indication of the TB, and then obtain the i-th CB The unprocessed fields in 1 CB are spliced with the i-th CB, so that the fields separated by the i-th CB and the i-1th CB are spliced into complete fields, and then the i-1th CB Perform analytical processing.

Exemplarily, the intermediate state refers to the field of the MAC PDU where the CB that the TB has currently processed stops.

Exemplarily, the parsing progress indicator may be a parameter, and the parameter is used to refer to the intermediate state of the CB processing in the TB, and the mapping relationship between the parameter and the intermediate state may be arbitrary.

That is, when the PHY receives a CB, it transmits a CB to the MAC layer, and the MAC layer parses the CB through the header extraction module, obtains MAC PDU data segments, and reports the MAC PDU data segments to the upper layer. In this way, real-time processing of the CB can be realized. Compared with analyzing and processing the complete TB after receiving the complete TB, the method provided by the embodiment of the present application can reduce the memory pressure, reduce the delivery delay of the data packet, and reduce the delay of the modem. power consumption.

In the method provided in the embodiment of the present application, when HARQ retransmission occurs on some CBs in the TB, the PHY does not need to buffer the TB to wait for the CB retransmission. For example, as shown in Figure 8, TB0 includes TB0_CB0, TB0_CB1, TB0_CB2, and TB0_CB3, TB1 includes TB1_CB0 and TB1_CB1, and TB2 is not divided into CBs. When the PHY receives TB0_CB0 and TB0_CB1, it submits TB0_CB0 and TB0_CB1 to the MAC layer, and the header extraction module of the MAC layer parses TB0_CB0 and TB0_CB1 according to the TB0 parsing progress indication, and reports the MAC PDU data to the upper layer in segments. At this time, HARQ retransmission occurs in TB0_CB2 and TB0_CB3. Then the PHY receives TB1_CB0, submits TB1_CB0 to the MAC layer, and the header extraction module of the MAC layer parses TB1_CB0 according to the parsing progress indication of TB1, and reports the MAC PDU data segments to the upper layer. When the PHY receives the retransmission of TB0_CB2 and TB0_CB3, it submits TB0_CB2 and TB0_CB3 to the MAC layer, and the header extraction module of the MAC layer parses TB0_CB2 and TB0_CB3 according to the TB0 parsing progress indication, and reports the MAC PDU data segments to the upper layer .

Exemplarily, the header extracting module reports the i-th MAC PDU data segment to the upper layer.

Exemplarily, based on the i-th MAC PDU data segment including the PDCP Count value and the PDCP PDU, the header extraction module sends the PDCP Count value and the PDCP PDU to the PDCP layer.

For example, as shown in Figure 9, the header extraction module 50 receives the CB from the PHY, analyzes the CB according to the analysis progress indication of the TB, obtains the PDCP information (PDCP PDU and PDCP Count value), and sends the PDCP information to the decryption module of the PDCP layer .

To sum up, the method provided in this embodiment receives the CB of the TB that bears the MAC PDU from the PHY, analyzes the MAC PDU with the CB as the analysis object, and obtains the header of each layer and the PDCP PDU. Among them, since the fields contained in the CB may be incomplete, for example, if a field is divided into two parts by two adjacent CBs, when processing the previous CB, the parsing progress indication of the TB is updated according to the processing result of the CB, and parsing The progress indicator is used to store the processing status of the CB. When processing the next CB, read the unparsed fields of the previous CB according to the parsing progress indication, and splicing with the next CB to obtain complete fields for parsing. Therefore, the method provided in the embodiment of the present application can process the CBs of TBs one by one based on the TB parsing progress indication, so that the PHY can transmit a CB to the upper layer every time it receives a CB, reducing the processing pressure on the memory of the terminal device and reducing the data Packet delivery delay and modem power consumption.

Exemplarily, an exemplary embodiment is given in which the header extraction module parses the CB according to the parsing progress indication.

Please refer to FIG. 10 , which shows a flowchart of a data processing method applied to a media access control layer provided by an embodiment of the present application. The method can be applied to terminal devices in the system architecture shown in FIG. 1 . The method includes the following steps.

Step 210: Receive the ith CB of the TB used to carry the MAC PDU from the PHY, the TB includes n CBs, i is a positive integer not greater than n, and n is a positive integer.

As shown in Figure 11, the PHY submits the in sequence CB (sequential code block) to the Header Extract (header extraction) module, and the header extraction module establishes the context (context) of each TB, which includes the parsing progress indicator. Parameter, the parsing progress indication is used to save the intermediate state of CB processing. Parse the CB according to the parsing progress indication to obtain the header part of the MAC, RLC, and PDCP protocol units, obtain the PDCP Count value through calculation, and then submit the complete PDCP PDU to the Decipher Engine (deciphering engine/deciphering module) of the PDCP layer.

Exemplarily, the header extraction module saves the mapping relationship between Logic channel (logical channel) and DRB (Data Radio Beare, data resource bearer), and configures entity information of MAC, RLC and PDCP. After parsing the CB to obtain the MAC PDU data segment, the header extraction module also saves the information of the MAC Sub header and RLC length (length), and parses the context of the TB. The main functions of the header extraction module include header (header) analysis, RLC window (window) detection, and calculation of HFN (Hyper Frame Number, super frame number) and Count value of PDCP. Wherein, the PDCP Count value is composed of HFN and PDCP SN (PDCP Sequence Number, PDCP sequence number).

Exemplarily, the terminal device configures configuration data for the header extraction module of the MAC layer, and the configuration data includes at least one of a mapping relationship between a logical channel and a data resource bearing DRB, MAC entity information, RLC entity information, and PDCP entity information.

Step 221: Parse the i-th CB according to the parsing progress indication of the TB to obtain the first PDU data segment; update the parsing progress indication based on determining the fields included in the first PDU data segment.

Exemplarily, based on the field of the MAC PDU contained in the first PDU data segment obtained by parsing the i-th CB, the parsing progress indication of the TB is updated.

For example, based on determining that the first PDU data segment includes part or all of the fixed header of the radio link layer control protocol, update the parsing progress indication to the first state;

Based on determining that the first PDU data segment includes part or all of the extended header of the radio link layer control protocol, updating the parsing progress indication to the second state;

Based on determining that the first PDU data segment includes part or all of the header of the packet data convergence protocol, updating the parsing progress indication to a third state;

Based on determining that the first PDU data segment includes part or all of the valid data of the service data unit of the radio link layer control protocol, update the parsing progress indication to the fourth state;

Based on determining that the first PDU data segment includes part or all of the valid data of the medium access control unit, updating the parsing progress indication to the fifth state;

Based on determining that the parsing object of the MAC layer is the transport block, updating the parsing progress indicator to the sixth state.

Exemplarily, based on the data carried by the i-th CB ending in the target field of the PDU (MAC PDU), the parsing progress indication is updated based on the target field. Or, based on the target field of the PDU (MAC PDU) where the first PDU data segment ends, the parsing progress indication is updated based on the target field.

Exemplarily, based on determining that the parsing object of the MAC layer is a TB, updating the parsing progress indication of the TB to the sixth state;

Based on determining that the target field is a fixed header of the radio link layer control protocol RLC, updating the parsing progress indication of the TB is the first state;

Based on determining that the target field is the extended header of the RLC, updating the parsing progress indication of the TB to the second state;

updating the parsing progress indication of the TB to a third state based on determining that the target field is the header of the PDCP;

Based on determining that the target field is valid data of the RLC SDU, updating the parsing progress indication of the TB is the fourth state;

Based on determining that the target field is the valid data of the MAC CE, updating the parsing progress indication of the TB to the fifth state.

In an optional implementation manner, the mapping relationship between the target field and the parsing progress indication is as follows:

Parsing progress indication: 0 (sixth state) corresponds to: no parsing progress indication: that is, the object of parsing is TB, and there is no parsing progress indication;

Parsing progress indication: 1 (first state) corresponds to: RLC fix header: that is, the current CB ends in the RLC Fix header part;

Parsing progress indication: 2 (second state) corresponds to: RLC LI header: that is, the current CB ends at the length information (length information) part of the RLC extension header;

Parsing progress indication: 3 (third state) corresponding to: PDCP Header: that is, the current CB ends at the part of the PDCP header (when the PDCP header is more than 1Byte);

Parsing progress indication: 4 (the fourth state) corresponds to: RLC SDU Payload: that is, the current CB ends at the payload (effective data) part of the RLC SDU. The payload may be: PDCP's Control PDU (control PDU), or SRB (Signalling Radio Bearers, signaling wireless bearer message), or the header or data (data) part of IP Packet (IP packet);

Parsing progress indication: 5 (fifth state) corresponds to: MAC CE Payload: that is, the current CB ends in the payload part of the MAC CE.

For example, as shown in FIG. 12 , based on determining that the currently parsed CB stops at the valid data of the MAC CE of the MAC PDU, the TBCS (TB Context State, TB parsing progress indication state) of the TB is TBCS-5. Based on the determination that the currently parsed CB stops at the RLC Fix Header field of the MAC PDU, the TBCS of the TB is TBCS-1. Based on the determination that the currently parsed CB stops at the RLC Li Header field of the MAC PDU, the TBCS of the TB is TBCS-2. Based on the determination that the currently parsed CB stops at the PDCP Header field of the MAC PDU, the TBCS of the TB is TBCS-3. Based on the determination that the currently parsed CB stops at the valid data of the RLC SDU of the MAC PDU, the TBCS of the TB is TBCS-4.

In another optional implementation, based on determining that the data carried by the i-th CB ends in the target field of the MAC PDU, and the data in the target field in the i-th CB is incomplete, update the parsing progress of the TB according to the target field instruct. Based on determining that the data carried by the i-th CB ends in the target field of the MAC PDU, and the data in the target field in the i-th CB is complete, update the parsing progress indication of the TB according to the next field of the target field in the MAC PDU.

Exemplarily, the first PDU data segment includes at least one of a MAC header, an RLC header, a PDCP header, a PDCP Count value, and a PDCP PDU.

Exemplarily, when the i-th CB contains a PDCP header, the header extraction module reads the cached data of the PDCP header according to the parsing progress indication of the TB; the header extraction module parses the cached data of the PDCP header and the i-th CB CB, calculate the PDCP Count value based on the PDCP header obtained by parsing, and obtain the i-th MAC PDU data segment, where the i-th MAC PDU data segment includes the PDCP Count value.

Exemplarily, the header extraction module parses the PDCP header to obtain the PDCP SN, calculates the HFN according to the PDCP SN, and obtains the PDCP Count value according to the HFN and the PDCP SN.

Exemplarily, based on the fact that the last bit carried by the i-th CB belongs to the target field of the MAC PDU, the parsing progress indication of the TB is updated based on the target field.

Step 230: Receive the i+1th CB of the TB from the PHY.

Step 240: Parse the i+1th CB to obtain the second PDU data segment, and update the parsing progress indication of the TB according to the first PDU data segment and the second PDU data segment.

Exemplarily, continue to receive the next CB of the TB, and parse the next CB, and update the parsing progress indication of the TB according to the parsing result of the CB.

Exemplarily, after parsing the i-th CB, the bit sequence of the first PDU data segment is cached; after parsing the i+1th CB, the bit sequence of the second PDU data segment is extracted; the first PDU The bit sequence of the data segment is spliced with the bit sequence of the second PDU data segment, and the TB parsing progress indication is updated according to the splicing result.

In an optional embodiment, after parsing the i-th CB, if the i-th CB contains an incomplete field, the incomplete field needs to be cached so that the i+1-th CB When , it is spliced with the i+1th CB to obtain a complete field. That is, based on the fact that the i-th CB does not carry a complete target field, the bit sequence belonging to the target field in the i-th CB is buffered into the data of the target field.

Exemplarily, the target field is carried in at least two CBs. For example, the target field is carried on the i-th CB and the i+1-th CB, where i is a positive integer smaller than n.

Since the target field is divided into a first field part and a second field part by the i-th CB and the i+1-th CB. When the header extraction module parses the i-th CB, because the target field is incomplete, the part of the first field that cannot be parsed will be cached by the header extraction module. CBs are analyzed together.

In an optional embodiment, before parsing the i+1th CB, the target cache data in the target field is read according to the parsing progress indication of the TB.

Based on determining that the i+1th CB of the TB has been received, the header extraction module reads the parsing progress indication of the TB, and reads the target cache data of the target field based on the parsing progress indication of the TB.

Exemplarily, the second PDU data segment includes a MAC PDU data segment obtained by parsing the target buffer data and the i+1th CB.

Exemplarily, the target buffer data is spliced with the i+1th CB, and the spliced i+1th CB is analyzed to obtain the second PDU data segment.

Exemplarily, based on determining that the data carried by the i+1th CB ends in field X, and the i+1th CB does not carry a complete field X, the bit sequence belonging to field X in the +1th CB is buffered in the field X's cached data. Exemplarily, field X and the aforementioned target field may be the same field, or may be different fields. The target field is the field to which the first bit carried by the i+1th CB belongs, and field X is the field to which the last bit carried by the i+1th CB belongs to.

Exemplarily, since the target field in the header of the i+1th CB is incomplete, it is necessary to read the cached data of the previous target field, splicing it with the i+1th CB and then parsing it. Since the field X at the end of the i+1th CB is incomplete, the bit sequence of the field X in the i+1th CB needs to be cached so that the cached data of the field X can be read during subsequent CB processing to splicing to obtain a complete The field X is parsed.

Exemplarily, the i+1th code block of the transport block is received from the physical layer; the i+1th code block is parsed to obtain the second PDU data segment; and the parsing progress indication of the transport block is updated according to the second PDU data segment.

Exemplarily, the j-th code block of the transport block is parsed based at least in part on the parsing progress indication, where j is another positive integer different from i and not greater than n.

Exemplarily, the method provided in the embodiment of this application is not limited to the CB-based delivery processing of LTEMAC PDU, but can also be applied to the CB-based delivery processing of 5G MAC PDU, and can also be applied to subsequent evolution systems, such as 6G, 7G, 8G system.

To sum up, the method provided in this embodiment reads the unparsed fields in the previous CB parsing according to the parsing progress indication of the TB, and splices them with the current CB to make the fields in the CB complete, and then realizes based on Analysis of each field of the MAC PDU when CB is submitted. Realize LTE CB-based MAC PDU parsing, data packet onthefly (fast) processing, reduce DDR cache and on-chip memory required by the physical layer, RLC and the entire system, and save costs. The processing pressure of the decryption module is averaged, and the DDR bandwidth will be reduced by about two times compared with the data transmission peak bandwidth, thereby improving the immediacy of data packet delivery and reducing the power consumption of the modem.

Fig. 13 shows a structural block diagram of a data processing device applied to the media access control layer provided by an exemplary embodiment of the present application. The device can be implemented as a terminal device, or can be implemented as a part of the terminal device. The device includes :

The header extraction module 50 is configured to receive from the physical layer the i-th code block of the transmission block used to carry the PDU of the medium access control layer, the transmission block includes n code blocks, and i is not greater than n positive integer, n is a positive integer;

The header extraction module 50 is configured to parse the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment;

The header extraction module 50 is configured to update the parsing progress indication of the transport block according to the first PDU data segment.

In an optional embodiment, the header extraction module 50 is configured to parse the jth code block of the transmission block based at least in part on the parsing progress indication, where j is different from i and not greater than n Another positive integer of .

In an optional embodiment, the header extraction module 50 is configured to update the parsing progress indication based on determining that the first PDU data segment includes part or all of the fixed header of the radio link layer control protocol is the first state;

The header extraction module 50 is configured to update the parsing progress indicator to a second state based on determining that the first PDU data segment includes part or all of the extended header of the radio link layer control protocol;

The header extraction module 50 is configured to update the parsing progress indicator to a third state based on determining that the first PDU data segment includes part or all of the header of the packet data convergence protocol;

The header extraction module 50 is configured to update the parsing progress indicator to a fourth state based on determining that the first PDU data segment includes part or all of the valid data of the service data unit of the radio link layer control protocol;

The header extraction module 50 is configured to update the parsing progress indicator to a fifth state based on determining that the first PDU data segment includes part or all of the valid data of the MAC unit. In an optional embodiment, the header extraction module 50 is configured to update the parsing progress indicator to a sixth state based on determining that the parsing object of the medium access control layer is the transport block.

In an optional embodiment, the header extraction module 50 is configured to receive the i+1th code block of the transport block from the physical layer;

A header extraction module 50, configured to parse the i+1th code block to obtain a second PDU data segment;

The header extraction module 50 is configured to update the parsing progress indication of the transport block according to the first PDU data segment and the second PDU data segment.

In an optional embodiment, the header extraction module 50 is configured to buffer the bit sequence of the first PDU data segment;

A header extraction module 50, configured to extract the bit sequence of the second PDU data segment;

A header extraction module 50, configured to splice the bit sequence of the first PDU data segment with the bit sequence of the second PDU data segment

In an optional embodiment, the header extraction module 50 is configured to receive the i+1th code block of the transport block from the physical layer;

A header extraction module 50, configured to parse the i+1th code block to obtain a second PDU data segment;

The header extraction module 50 is configured to update the parsing progress indication of the transport block according to the second PDU data segment.

In an optional embodiment, the first PDU data segment includes: the header of the media intervention control layer, the header of the radio link layer control protocol, the header of the packet data convergence protocol, the packet data convergence protocol At least one of a count value and a PDU of a packet data convergence protocol.

In an optional embodiment, the first PDU data segment includes the packet data convergence protocol count value;

A header extraction module 50, configured to read the cached data of the header of the packet data convergence protocol according to the parsing progress indication of the transport block;

The header extraction module 50 is configured to analyze the cached data of the header of the packet data convergence protocol and the i-th code block, and calculate the packet data convergence protocol based on the header of the packet data convergence protocol obtained by parsing The count value is used to obtain the first PDU data segment.

In an optional embodiment, the header extraction module 50 is configured to, based on the first PDU data segment including the PDU count value of the packet data convergence protocol and the PDU of the packet data convergence protocol, send to the packet data convergence protocol The protocol layer sends the packet data convergence protocol count value and the packet data convergence protocol PDU.

In an optional embodiment, the header extraction module 50 is configured to configure configuration data, the configuration data includes the mapping relationship between logical channels and data resource bearers, entity information of the media access control layer, radio link layer At least one of the entity information of the control protocol and the entity information of the packet data convergence protocol.

FIG. 14 shows a schematic structural diagram of a communication device (terminal device or network device) provided by an exemplary embodiment of the present application. The communication device includes: a processor 101 , a receiver 102 , a transmitter 103 , a memory 104 and a bus 105 .

The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.

The receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.

The memory 104 is connected to the processor 101 through the bus 105 .

The memory 104 may be used to store at least one instruction, and the processor 101 is used to execute the at least one instruction, so as to implement various steps in the foregoing method embodiments.

In addition, the memory 104 can be implemented by any type of volatile or non-volatile storage device or their combination. The volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Electrically-Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read-Only Memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).

Wherein, when the communication device is implemented as a terminal device, the processor and the transceiver in the communication device involved in the embodiment of the present application can perform the steps performed by the terminal device in any of the above-mentioned methods, which will not be repeated here. .

In a possible implementation manner, when the communication device is implemented as a terminal device,

The processor is configured to receive from the physical layer the i-th code block of the transmission block used to carry the PDU of the medium access control layer, the transmission block includes n code blocks, and i is a positive number not greater than n Integer, n is a positive integer;

The processor is configured to parse the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment;

The processor is configured to update the parsing progress indication of the transport block according to the first PDU data segment.

In an exemplary embodiment, a computer-readable storage medium is also provided, the computer-readable storage medium stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the At least one section of program, the code set or instruction set is loaded and executed by the processor to implement the data processing method applied to the media access control layer executed by the communication device and provided by the above method embodiments.

In an exemplary embodiment, there is also provided a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a computer device, it is used to implement the above-mentioned application medium The data processing method of the access control layer.

In an exemplary embodiment, a computer program product is also provided. When the computer program product runs on a processor of a computer device, the computer device executes the data processing method applied to the medium access control layer described in the above aspect .

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above embodiments can be completed by hardware, and can also be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.

The above are only optional embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection of the application. within range.

Claims (15)

1. A data processing method applied to a media access control layer, characterized in that the method comprises: receiving from the physical layer the i-th code block of the transport block for carrying the PDU of the media access control layer, where the transport block includes n code blocks, i is a positive integer not greater than n, and n is a positive integer; Parsing the ith code block according to the parsing progress indication of the transport block to obtain the first PDU data segment; updating the parsing progress indication of the transport block according to the first PDU data segment. 2. The method according to claim 1, characterized in that the method further comprises: A jth code block of the transport block is parsed based at least in part on the parsing progress indication, where j is another positive integer different from i and not greater than n. 3. The method according to claim 2, wherein updating the parsing progress indication of the transport block according to the first PDU data segment comprises at least one of the following steps: updating the parsing progress indication to a first state based on determining that the first PDU data segment includes a fixed header of a radio link layer control protocol; updating the parsing progress indicator to a second state based on determining that the first PDU data segment includes an extended header of a radio link layer control protocol; updating the parsing progress indicator to a third state based on determining that the first PDU data segment includes a packet data convergence protocol header; updating the parsing progress indicator to a fourth state based on determining that the first PDU data segment includes valid data of a service data unit of a radio link layer control protocol; Updating the parsing progress indicator to a fifth state based on determining that the first PDU data segment includes valid data of a MAC element. 4. The method according to claim 2, characterized in that the method further comprises: Based on determining that the parsing object of the medium access control layer is the transport block, updating the parsing progress indicator to a sixth state. 5. The method according to claim 2, characterized in that the method further comprises: receiving the i+1th code block of the transport block from the physical layer; Analyzing the i+1th code block to obtain a second PDU data segment; updating the parsing progress indication of the transport block according to the first PDU data segment and the second PDU data segment. 6. The method according to claim 5, wherein the updating the parsing progress indication of the transport block according to the first PDU data segment and the second PDU data segment comprises: buffering the bit sequence of the first PDU data segment; extracting the bit sequence of the second PDU data segment; splicing the bit sequence of the first PDU data segment and the bit sequence of the second PDU data segment. 7. The method according to claim 2, further comprising: receiving the i+1th code block of the transport block from the physical layer; Analyzing the i+1th code block to obtain a second PDU data segment; updating the parsing progress indication of the transport block according to the second PDU data segment. 8. The method according to any one of claims 1 to 7, wherein the first PDU data segment comprises: a header of a media access control layer, a header of a radio link layer control protocol, a packet data aggregation Part or all of at least one field in the header of the protocol, the count value of the packet data convergence protocol, and the PDU of the packet data convergence protocol. 9. The method according to claim 8, wherein the first PDU data segment comprises the packet data convergence protocol count value; The parsing of the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment includes: reading the cached data in the header of the packet data convergence protocol according to the parsing progress indication of the transport block; Analyzing the cached data in the header of the packet data convergence protocol and the i-th code block, calculating the count value of the packet data convergence protocol based on the analyzed header of the packet data convergence protocol, to obtain the first PDU data segmentation. 10. The method according to claim 8, further comprising: Sending the packet data convergence protocol count value and the packet data convergence protocol layer to the packet data convergence protocol layer based on the PDU of the first PDU data segment including the packet data convergence protocol count value and the packet data convergence protocol PDUs. 11. The method according to any one of claims 1 to 7, characterized in that the method further comprises: Configure configuration data, the configuration data includes at least one of the mapping relationship between logical channels and data resource bearers, the entity information of the media access control layer, the entity information of the radio link layer control protocol, and the entity information of the packet data convergence protocol . 12. A data processing device applied to a medium access control layer, characterized in that the device comprises: A header extraction module, configured to receive from the physical layer the i-th code block of the transmission block used to carry the PDU of the medium access control layer, the transmission block includes n code blocks, and i is a positive value not greater than n Integer, n is a positive integer; The header extraction module is configured to parse the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment; The header extraction module is configured to update the parsing progress indication of the transport block according to the first PDU data segment. 13. A terminal device, characterized in that the terminal device comprises: a processor; wherein, The processor is configured to receive from the physical layer the i-th code block of the transmission block used to carry the PDU of the media access control layer, the transmission block includes n code blocks, and i is a positive value not greater than n Integer, n is a positive integer; The processor is configured to parse the i-th code block according to the parsing progress indication of the transport block to obtain the first PDU data segment; The processor is configured to update the parsing progress indication of the transport block according to the first PDU data segment. 14. A computer-readable storage medium, characterized in that executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to implement any one of claims 1 to 11. The data processing method applied to the media access control layer. 15. A chip, characterized in that the chip includes a programmable logic circuit or program, and the chip is used to implement the data processing method applied to the media access control layer according to any one of claims 1 to 11 .

Images