WO2016061987A1

WO2016061987A1 - Packet processing method and device

Info

Publication number: WO2016061987A1
Application number: PCT/CN2015/074331
Authority: WO
Inventors: 贺保国; 武见; 董建军
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-10-24
Filing date: 2015-03-16
Publication date: 2016-04-28
Also published as: CN105591975A

Abstract

Disclosed are a packet processing method and device, the method comprising: at least two packets used for sending are stored in a cache; it is determined whether the at least two packets satisfy predetermined packet assembly conditions; if the determined result is affirmative, the at least two packets are assembled and sent. The present invention solves the problem in the related art of the capability to process small packets being relatively poor, and effectively improves small-packet processing capacity in a wireless network.

Description

Message processing method and device

Technical field

The present invention relates to the field of communications, and in particular to a packet processing method and apparatus.

Background technique

The Layer 2 user plane protocol stack of LTE consists of three sublayers, which are divided into Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Media Access Control ( Media Access Control, referred to as MAC). The main functions of the PDCP layer include header compression, security functions (integrity protection and encryption), and support for reordering and retransmission at handover. These functions depend on the radio bearer, and each radio bearer has a PDCP entity.

The processing flow of the transmitting end of the PDCP layer: after receiving the Service Data Unit (SDU) from the upper layer, the sequence number (Sequence Number, referred to as SN) is assigned, and if integrity protection is required, the integrity protection process is performed. If the encryption is required, the encryption process is performed; the serial number of the sender and the Hyper Frame Number (HFN) value are maintained, and the Protocol Data Unit (PDU) is sent to the lower layer for processing.

PDCP layer receiving end processing flow: receiving protocol data unit PDU from the lower layer, performing decryption processing if decryption is required; performing integrity protection check if integrity protection processing is required; maintaining local receiving serial number according to receiving serial number SN The SN and superframe number HFN values, the service data unit SDU is delivered to the higher layer processing.

With the rapid development of LTE's large-scale commercial and mobile Internet, the types of services in the network have become more abundant, and various kinds of messages exist, such as many O2O applications, such as WeChat, E-mail, Weibo, etc. There are also ACK feedback messages of the Transmission Control Protocol (TCP). These messages are characterized by small packets, which are very frequent and have a large amount of data.

However, at present, whether it is the terminal side or the network side, the processing of the PDCP protocol is basically a chip of a central processing unit (CPU), and its main feature is linear processing, and the packet processing capability is poor. According to the PDCP protocol, each SDU of the upper layer needs to be processed independently, and processed by the PDCP protocol to form a PDU and sent to a lower layer protocol stack, such as RLC. In this way, the PDCP layer on the terminal or the network side can handle small packets very poorly, and the air interface bandwidth cannot be fully utilized. For example, a Frequency Division Duplex (FDD) 20M bandwidth cell has an air interface capacity of 150 Mbps. It is assumed that the chip can process 10,000 packets per second. If the size of each packet is 1500 bytes, the traffic is 110 Mbps. Left and right; if each message size is 64 bytes, the traffic is only about 5 Mbps. Of course, considering the 1500-byte and 64-byte memory processing factors, it may be higher, but the traffic is still very low, far from meeting the needs of real-life commercial environments.

For the problem of this small packet, the current processing method generally uses a higher speed processor and a larger memory, but basically it is a temporary solution.

In view of the inability of the related art to solve the problem of poor processing capability of small messages, no effective solution has been proposed yet.

Summary of the invention

The present invention provides a packet processing method and apparatus, so as to at least solve the problem that the related art cannot solve the problem that the small message processing capability is poor.

According to an aspect of the present invention, a packet processing method is provided, including: storing at least two messages for sending in a buffer area; determining whether the at least two messages meet a predetermined grouping condition; If the determination result is yes, the at least two messages are sent in a group package.

Preferably, determining whether the at least two messages meet the predetermined grouping condition includes at least one of: determining whether the total number of bytes of the at least two messages is greater than or equal to a first preset value, and determining a result If yes, determining whether to group the at least two packets; determining whether the time waiting to cache the first one of the at least two packets exceeds a second preset value, and determining the result In the case of YES, it is determined that the at least two messages are grouped.

Preferably, performing packet transmission on the at least two packets includes: adding, after the grouping the at least two packets, a data packet to identify that the data packet is a combination of at least two packets. The package identifier; the data packet to which the group package identifier is added is sent.

Preferably, the group sending of the at least two packets comprises: grouping the at least two packets by using a TLV (Tag, Length, Value) format to distinguish the at least two packets. send.

According to another aspect of the present invention, a packet processing method is provided, including: determining whether a received data packet is a data packet sent by a group packet, wherein the data packet is at least two stored in a buffer area. The combination of the messages; if the result of the determination is YES, the received data packet is parsed by using a group packet format combining the at least two messages.

According to another aspect of the present invention, a packet processing apparatus includes: a storage module configured to store at least two messages for transmission in a buffer area; and a first determining module configured to determine the at least Whether the two packets meet the predetermined grouping condition; the sending module is configured to perform group packet sending on the at least two packets if the determination result is yes.

Preferably, the first determining module includes at least one of the following: a first determining unit, configured to determine whether a total number of bytes of the at least two messages is greater than or equal to a first preset value, and the determination result is And determining, by the second determining unit, whether the waiting time after buffering the first one of the at least two packets exceeds a second preset The value, if the determination result is yes, determines to group the at least two messages.

Preferably, the sending module includes: an adding unit, configured to add a group identifier for identifying that the data packet is a combination of at least two packets after the data packet obtained by grouping the at least two packets a first sending unit configured to transmit the data packet to which the group packet identifier is added.

Preferably, the sending module includes: a second sending unit, configured to perform group sending of the at least two packets in a manner that distinguishes the at least two packets by using a TLV format.

According to another aspect of the present invention, a message processing apparatus is provided, including: a second determining module, configured to determine whether a received data packet is a data packet sent by a group packet, wherein the data packet is a combination of at least two packets stored in the buffer area; and a parsing module configured to parse the received data packet by using a group packet format combining the at least two packets when the determination result is yes deal with.

According to the present invention, at least two messages for transmission are stored in the buffer area; determining whether the at least two messages satisfy a predetermined grouping condition; and if the determination result is yes, the at least two The packets are sent in groups, which solves the problem that the related technologies cannot solve the problem of small packet processing capability, and effectively improves the processing capability of small messages in the wireless network.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart 1 of a message processing method according to an embodiment of the present invention;

2 is a second flowchart of a message processing method according to an embodiment of the present invention;

3 is a block diagram 1 of a message processing apparatus according to an embodiment of the present invention;

Figure 5 is a block diagram 2 of a message processing apparatus in accordance with a preferred embodiment of the present invention;

Figure 6 is a block diagram 3 of a message processing apparatus in accordance with a preferred embodiment of the present invention;

FIG. 7 is a block diagram 2 of a message processing apparatus according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram of a message processing apparatus according to a preferred embodiment of the present invention; FIG.

9 is a schematic diagram of a PDCP packet header related to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a PDCP header according to an embodiment of the present invention; FIG.

11 is a schematic diagram of a PDCP message according to an embodiment of the present invention;

12 is a flowchart 1 of a message processing method according to a preferred embodiment of the present invention;

FIG. 13 is a second flowchart of a message processing method according to a preferred embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

A packet processing method is provided in this embodiment. FIG. 1 is a flowchart 1 of a packet processing method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, storing at least two messages for sending in the buffer area;

Step S104, determining whether the at least two messages meet the predetermined grouping condition;

Step S106: If the determination result is yes, the at least two packets are sent in a group package.

And the at least two packets stored in the buffer area are determined by the foregoing steps to determine whether the at least two packets meet the predetermined grouping condition, and if the two packets are satisfied, the at least two packets are sent to the group to solve the problem. In the related art, the problem that the small message processing capability is poor can not be solved, and the processing capability of the small message in the wireless network is improved.

As a preferred implementation manner, it is determined whether the at least two packets meet the predetermined grouping condition by at least one of the following: determining whether the total number of bytes of the at least two packets is greater than or equal to the first preset value, and determining the result If yes, determine whether to group the at least two packets; determine whether the waiting time after buffering the first one of the at least two packets exceeds a second preset value, and the result is In the case of the case, it is determined that the at least two packets are grouped. In addition, it is emphasized that the waiting time after buffering the first packet exceeds the second preset value, and only one packet is available at this time. In this case, the message can be sent directly. The foregoing two modes are only preferred embodiments, and the packet can be grouped according to other conditions, and details are not described herein again.

In this embodiment, an identifier is added to a data packet obtained after grouping at least two packets, and is used to identify that the data packet is a group identifier of at least two packet combinations, and the group identifier is added. The data packet is sent, and the identifier is added, so that after receiving the data packet, the data packet can be known as the data packet after the group packet, so that the data packet is directly parsed and processed, thereby improving the processing efficiency.

As a preferred implementation, the at least two packets are sent in groups by using the TLV format to differentiate the at least two packets, and the TLV format is used to facilitate each packet in the packet. When parsing the data packet after the rental package, it can accurately distinguish each message. Of course, other formats may be used, as long as the format that can achieve the same effect is within the protection scope of the embodiment of the present invention.

Another aspect of the present invention provides a packet processing method. FIG. 2 is a second flowchart of a packet processing method according to an embodiment of the present invention. As shown in FIG. 2, the method includes:

Step S202, determining whether the received data packet is a data packet sent by the group packet, where the data packet is a combination of at least two messages stored in the buffer area;

Step S204: If the determination result is yes, the received data packet is parsed by using a packet format that combines the at least two messages.

Through the above steps, it is determined whether the received data packet is a data packet sent by the group packet, where the data packet is a combination of at least two messages stored in the buffer area; if the determination result is yes, the combination is adopted. The packet format of the at least two packets parses the received data packet, which solves the problem that the small message processing capability cannot be solved in the related art, and improves the processing capability of the small message in the wireless network.

According to another aspect of the present invention, a message processing apparatus is provided, which is used to implement the above-described embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a block diagram of a message processing apparatus according to an embodiment of the present invention. As shown in FIG. 3, the storage module 32 includes a storage module 32, a first determining module 34, and a sending module 36. The modules are briefly described below.

The storage module 32 is configured to store at least two messages for sending in the buffer area;

The first determining module 34 is configured to determine whether the at least two packets meet the predetermined grouping condition;

The sending module 36 is configured to, when the determination result is yes, perform packet transmission on the at least two packets.

4 is a block diagram 1 of a message processing apparatus according to a preferred embodiment of the present invention. As shown in FIG. 4, the first determining module 34 includes at least one of the following:

The first determining unit 42 is configured to determine whether the total number of bytes of the at least two messages is greater than or equal to the first preset value, and if the determination result is yes, determine to group the at least two packets. ;

The second determining unit 44 is configured to determine whether the time waiting for the first message in the at least two messages to be cached exceeds a second preset value, and if the determination result is yes, determining the at least two The message is grouped.

FIG. 5 is a block diagram 2 of a message processing apparatus according to a preferred embodiment of the present invention. As shown in FIG. 5, the sending module 36 includes:

The adding unit 52 is configured to add, to the data packet obtained after the grouping the at least two packets, a group identifier for identifying that the data packet is a combination of at least two packets;

The first transmitting unit 54 is configured to transmit the data packet to which the group identifier is added.

FIG. 6 is a block diagram 3 of a message processing apparatus according to a preferred embodiment of the present invention. As shown in FIG. 6, the sending module 36 includes:

The second sending unit 62 is configured to perform packet sending of the at least two packets in a manner that distinguishes the at least two packets by using a TLV format.

According to another aspect of the present invention, a packet processing apparatus is provided. FIG. 7 is a block diagram 2 of a message processing apparatus according to an embodiment of the present invention. As shown in FIG. 7, the method includes:

The second determining module 72 is configured to determine whether the received data packet is a data packet sent by the group packet, where the data packet is a combination of at least two messages stored in the buffer area;

The parsing module 74 is configured to parse the received data packet by using a packet format combining the at least two messages when the determination result is YES.

The embodiments of the present invention are further described below in conjunction with the preferred embodiments.

The key to the embodiment of the present invention is to add a packet buffer area between the PDCP protocol layer and the upper layer. FIG. 8 is a schematic diagram of a message processing apparatus according to a preferred embodiment of the present invention. As shown in FIG. 8, the buffer area is mainly used for : If the number of bytes in the buffer area is greater than or equal to N bytes, or the first message in the buffer area waits for more than T time; all the packets in the buffer area are sent together to the PDCP protocol layer as a SUD. Send; otherwise, wait in the buffer area. After the buffer area is added, the packet is packaged into an SDU and processed in the PDCP layer. Therefore, the format of the current PDCP protocol packet is changed. The standard PDCP protocol packet needs to be extended to some extent. Leave the field to indicate whether it is enabled.

FIG. 9 is a schematic diagram of a PDCP packet header related to an embodiment of the present invention. As shown in FIG. 9 , after the Flag flag is enabled, the format of the small packet in the Data field is TLV format in the packet format, such as As shown in Figure 10 and Figure 11, the T flag occupies 1 bit, indicating whether there is still a message at the end of the message; if it is, it is 1, if it is not, it is 0; if there is only one message, it is 0; the Length field is 7 bit, the most The length indicates the length of the long message of 128; the data field is the upper layer message; if there are multiple messages, the plurality of small messages are arranged in the order of the TLV.

After the buffer area is added, the existing PDCP protocol process is modified. For the PDCP sender process, the high-level packet first arrives in the buffer area, and the buffer area determines whether the message can be sent to the PDCP protocol layer. The packet in the buffer area is sent to the PDCP protocol layer; if not, the message is buffered in the packet buffer area; when there is more than one packet in the PDCP layer protocol processing, the Flag flag is set. Enable; otherwise, the flag is not enabled; all packets are grouped into one SDU according to the above TLV format, and the PDCP protocol is processed. For the PDCP receiving end process, after the PDCP receiving end processes the PDCP protocol process, it determines the Flag flag; if the Flag flag is not enabled, it directly delivers to the upper layer; if the Flag flag is enabled, it is opened according to the packet function; The packet parsing is performed according to the above TLV format, and each parsed message is delivered to the upper layer separately.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail in conjunction with specific embodiments.

Embodiment 1: Timer timeout scenario

FIG. 12 is a flowchart 1 of a packet processing method according to a preferred embodiment of the present invention. As shown in FIG. 12, the method includes the following steps:

Step S1202, the message arrives;

Step S1204, the message is added to the middle layer queue;

In step S1206, it is determined whether the packet in the middle layer queue is greater than N? If the determination result is no, step S1208 is performed, and if the determination result is yes, step S1210 is performed;

Step S1208: Determine whether the waiting time of the first packet in the packet in the middle layer queue is greater than T? If the determination result is no, the message processing ends, and if the determination result is yes, step S1210 is performed;

Step S1210: all the intermediate layer queue buffer messages are taken out;

In step S1212, all the packets buffered by the middle-layer packet queue are taken out, that is, sent to the receiving end, and the PDCP protocol stack of the receiving end is processed normally, and the SDU is parsed;

Step S1214, the PDCP layer processes, and sets the Flag flag.

Specifically, it is assumed that the sender-side algorithm N is set to 120 bytes and T is 100 ms. The upper layer of the sending end sends a packet P1, the length of the packet is less than N, P1 enters the buffer area and waits for the timeout locator T; the upper layer of the sending end sends the second packet P2, and the length of P1+P2 is still less than N, then P2 also Waiting in the buffer area; if the timer expires, the packets P1 and P2 are sent to the PDCP protocol stack, and the flag is enabled to indicate that multiple packets need to be sent; the PDCP protocol stack sends P1 and P2 as a whole SDU. To the lower layer protocol stack, and set the Flag flag to be enabled; after the PDCP protocol stack is processed normally, the SDU is parsed to determine the Flag flag; if the Flag flag is enabled, the message is parsed according to the above TLV format, and the message is sent. P1 and P2 are parsed and delivered to the high-level protocol.

Embodiment 2: The accumulated message exceeds the maximum value

FIG. 13 is a second flowchart of a message processing method according to a preferred embodiment of the present invention. As shown in FIG. 13, the method includes the following steps:

Step S1302, low-level delivery PDU;

Step S1304, PDCP layer protocol processing;

Step S1306, determining whether Flag is set in the PDCP header, if the determination result is yes, step S1308 is performed, and if the determination result is no, step S1312 is performed;

Step S1308, parsing according to the TLV format;

Step S1310: each data parsed is delivered separately;

Step S1312, delivery to the upper level.

Specifically, it is assumed that the algorithm N of the transmitting end is 120 bytes, and T is 100 ms; the upper layer of the transmitting end sends a packet P1, the length of the packet is less than N, and P1 enters the buffer area to wait, and the timeout locator T is started; the transmitting end sends the second one. If the length of the packet P2 and P1+P2 is greater than N, the packets P1 and P2 are sent to the PDCP protocol stack, and the flag is set, indicating that multiple packets in the buffer area need to be sent together; meanwhile, the timer T is killed. The PDCP protocol stack sends the PDUs as P1 and P2 as a whole to the lower layer protocol stack, and sets the Flag flag to be enabled. After the PDCP protocol stack is processed normally, the SDU is parsed and the Flag flag is determined. If the Flag flag is enabled, the Flag flag is enabled. Then, parsing according to the above TLV format, parsing the messages P1 and P2, and delivering them to the higher layer protocol respectively.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the above embodiments and the preferred embodiments solve the problem that the processing capability of the small message cannot be solved poorly in the related art, and the processing capability of the small message in the wireless network is effectively improved.

Claims

A packet processing method includes:

Storing at least two messages for transmission in a buffer area;

Determining whether the at least two messages meet a predetermined grouping condition;

If the result of the determination is yes, the at least two messages are sent in groups.
The method of claim 1, wherein determining whether the at least two messages satisfy a predetermined grouping condition comprises at least one of the following:

Determining whether the total number of bytes of the at least two packets is greater than or equal to a first preset value, and if the determination result is yes, determining to group the at least two packets;

Determining whether the time waiting for the first one of the at least two packets to be cached exceeds a second preset value, and if the determination result is yes, determining to group the at least two packets.
The method of claim 1, wherein the group sending the at least two messages comprises:

Adding, to the data packet obtained after the grouping the at least two packets, a packet identifier for identifying that the data packet is a combination of at least two packets;

The data packet to which the group package identifier is added is transmitted.
The method of claim 1, wherein the group sending the at least two messages comprises:

The at least two packets are group-sently transmitted in a manner that distinguishes the at least two packets by using a TLV format.
A packet processing method includes:

Determining whether the received data packet is a data packet sent by the group packet, where the data packet is a combination of at least two messages stored in the buffer area;

If the determination result is yes, the received data packet is parsed by using a group packet format that combines the at least two messages.
A message processing device comprising:

a storage module, configured to store at least two messages for sending in a buffer area;

a first determining module, configured to determine whether the at least two messages meet a predetermined grouping condition;

The sending module is configured to perform group packet sending on the at least two packets if the determination result is yes.
The apparatus of claim 6, wherein the first determining module comprises at least one of:

The first determining unit is configured to determine whether the total number of bytes of the at least two packets is greater than or equal to a first preset value, and if the determination result is yes, determine to group the at least two packets package;

a second determining unit, configured to determine whether a time waiting for buffering the first one of the at least two messages exceeds a second preset value, and if the determination result is yes, determining at least two Packets are grouped.
The apparatus of claim 6, wherein the transmitting module comprises:

Adding a unit, configured to add, to the data packet obtained after the grouping the at least two packets, a group identifier for identifying that the data packet is a combination of at least two packets;

The first sending unit is configured to send the data packet to which the group packet identifier is added.
The apparatus of claim 6, wherein the transmitting module comprises:

The second sending unit is configured to perform packet sending of the at least two packets in a manner that distinguishes the at least two packets by using a TLV format.
A message processing device comprising:

a second determining module, configured to determine whether the received data packet is a data packet sent by the group packet, where the data packet is a combination of at least two messages stored in the buffer area;

The parsing module is configured to parse the received data packet by using a group packet format combining the at least two messages when the determination result is yes.