WO2016188233A1

WO2016188233A1 - Data packet processing method, device, communication system and computer storage medium

Info

Publication number: WO2016188233A1
Application number: PCT/CN2016/078496
Authority: WO
Inventors: 居文涛
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-29
Filing date: 2016-04-05
Publication date: 2016-12-01
Also published as: CN106658596A

Abstract

Provided in an embodiment of the present invention are a data packet processing method, device, communication system and computer storage medium. The method comprises: acquiring a time window parameter of a transmission channel, and acquiring an offset of a physical channel carrying the transmission channel; according to the time window parameter and the offset, calculating a timing advance of the transmission channel; calculating, according to the timing advance, an arrival time of a frame data packet received via the transmission channel, and processing the frame data packet according to the arrival time.

Description

Data packet processing method, device and communication system, computer storage medium

Technical field

The present invention relates to the field of communications, and in particular, to a data packet processing method and apparatus, a communication system, and a computer storage medium.

Background technique

In a third generation Universal Mobile Telecommunications System (UMTS) mobile communication system, between a Radio Network Controller (RNC) and a NodeB (a wireless base station in a third generation UMTS mobile communication system) The data is transmitted according to the Iub interface protocol. The data may be delayed due to physical factors or other problems during the transmission process. Although the UMTS system considers the time window adjustment, the delay jitter is large, and the adjustment is not timely or adjusted. Deviation may cause a certain amount of packet loss, which in turn affects business performance.

In the UMTS system, the time that the frame data (FP, Frame Packet) packet arrives at the NodeB should be processed in advance (Tproc, Processing time before transmission on air-interface) ms, and the system can process normally. The Tproc is equal to the NodeB processing FP packet. The time is usually set by the system device. In practical applications, when the physical channel has a chip offset (chip offset, referred to as code offset), the arrival time of the FP packet is relatively late, even if the receiving time of the FP packet falls to the receiving window, if the arrival time (TOA) , Time Of Arrival) is small, the data does not arrive at the NodeB in advance Tproc ms, which causes the NodeB to fail to correctly process the packet data. At this time, the NodeB will not adjust the time to the RNC, and the data packet loss will occur. May cause dropped calls.

In summary, how to solve the problem that the system device is used to set Tproc, which causes the FP packet to be processed due to the large code size, has no effective solution.

Summary of the invention

The embodiment of the invention provides a data packet processing method and device, a communication system and a computer storage medium, so as to solve the problem that the FP packet caused by the system device setting Tproc cannot be processed normally due to the large code size.

In a first aspect, an embodiment of the present invention provides a data packet processing method, including:

Obtaining a time window parameter of the transport channel, and acquiring a code offset of a physical channel carrying the transport channel;

Calculating the time advance of the transmission channel (Tproc) according to the time window parameter and the code offset;

The arrival time of the frame data packet received through the transmission channel is calculated according to the timing advance, and the frame data packet is processed according to the arrival time.

Preferably, processing the frame data packet according to the arrival time comprises: determining whether the frame data packet arrives within the time window according to the arrival time, and if not, discarding the frame data packet.

Preferably, after the frame data packet is discarded, the method further includes: transmitting, to the radio network controller, a transmission time adjustment control frame configured to adjust a frame data packet transmission time.

Preferably, the method further includes: when the time window parameter and the code offset change, acquiring the new time advance amount by using the changed time window parameter and the code offset calculation.

Preferably, the method further comprises: when the new timing advance is greater than the timing advance, replacing the timing advance with the new timing advance.

Preferably, the method further includes: acquiring a time T1 from the start of processing a radio frame to the air interface, and a frame length T2 of a radio frame in the communication system; the time window parameter includes a time window start time TOAWS, a time window end time TOAWE, and a code The offset is chipoffset; according to the time window parameter and the code offset, calculating the time advance of the transmission channel includes: calculating the timing advance Tproc by using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE).

Preferably, the method further includes: determining a time margin ΔT3 according to the task period; and calculating a time advance of the transmission channel according to the time window parameter and the code offset, including: using a formula Tproc=MAX(T1, T2) +(T2*ChipOffset/38400)-TOAWE)+ΔT3, calculate the timing advance Tproc.

In a second aspect, an embodiment of the present invention provides a data packet processing apparatus, including:

Obtaining a module, configured to acquire a time window parameter of the transport channel, and obtain a code offset of a physical channel carrying the transport channel;

a calculation module configured to calculate a time advance of the transmission channel according to the time window parameter and the code offset;

The processing module is configured to calculate an arrival time of the frame data packet received through the transmission channel according to the timing advance, and process the frame data packet according to the arrival time.

Preferably, the processing module is configured to determine whether the frame data packet arrives within the time window according to the arrival time, and if not, discard the frame data packet.

Preferably, after the frame data packet is discarded, the processing module is further configured to send, to the radio network controller, a transmission time adjustment control frame configured to adjust a frame data packet transmission time.

Preferably, the calculation module is further configured to acquire a new timing advance by using the changed time window parameter and the code offset calculation when the time window parameter and the code offset change.

Preferably, the calculation module is further configured to replace the timing advance with the new timing advance if the new timing advance is greater than the timing advance.

Preferably, the obtaining module is further configured to acquire a time T1 of the base station from the processing of one radio frame to the air interface, and a frame length T2 of a radio frame in the communication system; the time window parameter includes a time window start time TOAWS and a time window end time TOAWE The code offset is chipoffset; the calculation module is configured to calculate the timing advance Tproc by using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE).

Preferably, the acquisition module is further configured to determine a time margin ΔT3 according to the task period; the calculation module is configured to calculate the timing advance Tproc using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE)+ΔT3.

In a third aspect, an embodiment of the present invention provides a communication system, including a base station and a wireless network. The controller, and the packet processing apparatus provided by the embodiment of the present invention, are configured to process a frame data packet received by the base station from the radio network controller by using a data packet processing apparatus.

In a fourth aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores executable instructions, and the executable instructions are used to execute a data packet processing method provided by an embodiment of the present invention.

Advantageous effects of embodiments of the present invention:

An embodiment of the present invention provides a data packet processing method, which acquires a time window parameter of a transport channel, carries a code offset of a physical channel of a transport channel, and calculates a time advancement Tproc of the transport channel according to a time window parameter and a code offset, such that Tproc is related to the parameters of each transmission channel. The Tproc calculation result will be obtained according to the parameters of different transmission channels, which is more accurate than the existing method of setting Tproc by the system equipment, and solves the problem that the existing system equipment is used to set Tproc. The problem that the FP packet with a large code offset cannot be processed normally.

DRAWINGS

1 is a schematic structural diagram of a data packet processing apparatus according to a first embodiment of the present invention;

2 is a flowchart of a data packet processing method according to a second embodiment of the present invention;

FIG. 3 is a flowchart of a data packet processing method according to a third embodiment of the present invention;

4 is a schematic diagram of Tproc calculation conditions in the 3GPP TS25.402 protocol.

detailed description

The embodiments of the present invention will be further explained by way of specific embodiments in conjunction with the accompanying drawings.

First embodiment:

FIG. 1 is a schematic structural diagram of a data packet processing apparatus according to a first embodiment of the present invention. As shown in FIG. 1 , in the embodiment, the data packet processing apparatus 1 includes:

The obtaining module 11 is configured to acquire a time window parameter of the transport channel and carry the transport channel The code offset of the channel (the mapping relationship between the transport channel and the physical channel);

The calculating module 12 is configured to calculate a timing advance of the transmission channel according to the time window parameter and the code offset;

The processing module 13 is configured to calculate an arrival time of the frame data packet received through the transmission channel according to the timing advance, and process the frame data packet according to the arrival time.

In some embodiments, the processing module 13 in the above embodiment is configured to determine whether the frame data packet arrives within the time window according to the arrival time, and if not, discard the frame data packet.

In some embodiments, after the frame data packet is discarded, the processing module 13 in the foregoing embodiment is further configured to send, to the radio network controller, a transmission time adjustment control frame configured to adjust a frame data packet transmission time.

In some embodiments, the calculation module 12 in the above embodiment is further configured to acquire a new timing advance using the changed time window parameter and the code offset calculation when the time window parameter and the code offset change.

In some embodiments, the calculation module 12 in the above embodiment is further configured to replace the timing advance with the new timing advance if the new timing advance is greater than the timing advance.

In some embodiments, the obtaining module 11 in the foregoing embodiment is further configured to acquire a time T1 from the start of processing a radio frame to the air interface, and a frame length T2 of a radio frame in the communication system; the time window parameter includes a time window. Start time TOAWS, time window end time TOAWE, code offset is chipoffset; calculation module 12 is configured to calculate the timing advance Tproc using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE).

In some embodiments, the acquisition module 11 in the above embodiment is further configured to determine a time margin ΔT3 according to a task period; the calculation module 12 is configured to utilize the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE) +ΔT3, calculate the timing advance Tproc.

Correspondingly, the embodiment of the present invention provides a communication system, which includes a base station and a radio network controller, and the data packet processing apparatus 1 provided by the embodiment of the present invention, which utilizes data packet processing. The device processes the frame data packet received by the base station from the radio network controller. In actual implementation, the data packet processing device 1 can be used as a hardware device independent of the base station and the radio network controller, and can also be coupled to the radio network controller to become a wireless device. A functional module of the network controller for processing frame data packets received by the radio network controller.

Second embodiment:

FIG. 2 is a flowchart of a data packet processing method according to a second embodiment of the present invention. As shown in FIG. 2, in the embodiment, the data packet processing method includes the following steps:

S201: Obtain a time window parameter of a transport channel, and carry a code offset of a physical channel of the transport channel;

S202: Calculate a time advance of the transmission channel according to the time window parameter and the code offset;

S203: Calculate an arrival time of a frame data packet received through the transmission channel according to the timing advance, and process the frame data packet according to the arrival time.

In some embodiments, processing the frame data packet according to the arrival time in the foregoing embodiment includes: determining, according to the arrival time, whether the frame data packet arrives within the time window, and if not, discarding the frame data packet.

In some embodiments, after the method of discarding the frame data packet, the method in the foregoing embodiment further includes: sending, to the radio network controller, a transmission time adjustment control frame configured to adjust a frame data packet transmission time.

In some embodiments, the method in the foregoing embodiment further includes: when the time window parameter and the code offset change, acquiring the new timing advance using the changed time window parameter and the code offset calculation.

In some embodiments, the method in the above embodiment further includes: when the new timing advance is greater than the timing advance, replacing the timing advance with the new timing advance.

In some embodiments, the method in the foregoing embodiment further includes: acquiring a time T1 from the start of processing a radio frame to the air interface, and a frame length T2 of a radio frame in the communication system; the time window parameter includes a time window start time. TOAWS, time window end time TOAWE, code offset is chipoffset; according to the time window parameter and code offset, calculating the time advance of the transmission channel includes: using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE), Count Calculate the time advance Tproc.

In some embodiments, the method in the foregoing embodiment further includes: determining a time margin ΔT3 according to the task period; and calculating a time advance of the transmission channel according to the time window parameter and the code offset, including: using a formula Tproc=MAX(T1, T2+ (T2*ChipOffset/38400)-TOAWE)+ΔT3, calculate the timing advance Tproc.

The embodiments of the present invention are preferably explained in conjunction with specific application scenarios.

The obtaining module 11, the calculating module 12 and the processing module 13 described in the above embodiments are partitioning of the data packet processing device at the functional module level. In actual implementation, the above modules may be implemented by independent hardware and coupled to perform cooperation. The above processing; or, may be implemented by the same hardware, for example, by a microprocessor (MCU), a logic programmable gate array (FPGA), or the like.

Third embodiment:

In view of the problem that the Tproc setting mode existing in the prior art is single and inaccurate, the embodiment provides a method for dynamically calculating Tproc according to TOAWE/TOAWS.

4 is a schematic diagram of Tproc calculation conditions in the 3GPP TS25.402 protocol. In FIG. 4, TOA is Time Of Arrival, LTOA is Latest Time Of Arrival, and TOAWS is TOA window starting endpoint. TOAWE is the end point of the TOA window; according to the calculation condition of the Tproc, in one embodiment, the TACT of each transmission bearer is calculated by using the TOAWS/TOAWE of the dedicated transport channel and the common transport channel, and the chipoffset of the physical channel carrying the transport channel. , including the following steps:

The NodeB records the TOAWS, TOAWE, and chipoffset parameters of each transport channel, and each transport channel corresponds to a LinkId;

For each transport channel, the NodeB calculates Tproc based on the recorded transport channel parameters, which is calculated as:

Tproc=MAX(T1,T2+(T2*ChipOffset/38400)-TOAWE)+Δ T3;

among them,

T1 is the time from the time when the NodeB processes data of one radio frame to the time of sending to the air interface, and the unit is ms;

T2 is equal to 10, which is a frame length of one radio frame in the WCDMA system equal to 10 ms;

ΔT3 is reserved for the NodeB processing. It is necessary to ensure that the data of one slot at the end of each frame may be processed in the next frame header. Therefore, according to the task cycle executed by the software, an additional time margin is required, and the unit is Ms. For example, the task execution period is less than 1ms, calculated by 1ms. If it exceeds 1ms, but less than 2ms, take 2ms. In short, ΔT3 is rounded up.

In principle, in the case of a small chipoffset, Tproc can be set smaller, it is a value according to chipoffset changes. In the case of a large chipoffset, the FP packet with the arrival time of TOA Late cannot be processed. Only the packet adjustment time is used to make the RNC retransmit the packet time. In the case where the chipoffset is small, the TOA Late packet is Can be processed normally, and will also be accompanied by time adjustment frame transmission. Calculate the Tproc value according to the formula, plus the margin of ΔT3ms. As long as the calculated Tproc is greater than the preset value, the Tproc is updated immediately to ensure that the data that falls on the edge of the time window can be processed correctly without Causes packet loss.

In practical applications, the variable Tproc is recorded under each transport bearer. When each transport bearer is established, the Tproc value is calculated and then the data falling within the time window is processed according to the actual transmission situation.

Specifically, as shown in FIG. 3, the data packet processing method provided in this embodiment includes the following steps:

S301: The base station acquires a transmission channel parameter.

The NodeB saves the transmission channel related parameters in the received NBAP (NodeB Application Part, Node B Application Part Protocol) signaling, TOAWS, TOAWE, Chipoffset, each transport channel corresponds to a transport bearer line identifier.

S302: The NodeB calculates a Tproc of the transport channel.

According to the calculation method of Tproc provided by this embodiment, the TNB=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE)+ΔT3 sequentially calculates the value of Tproc of each transmission channel.

For example, the relevant parameters of a certain transmission channel are: T1=11ms, T2=10ms, ΔT3=1ms, TOAWE=4ms, chipoffset=27904, then the calculated Tproc=14ms. Then, after the NodeB receives the packet sent from the Iub interface for each transport channel, the time from the start of the downlink encoding process to the transmission to the air interface is 14 ms.

In practical applications, if you do not add chipoffset to use the dynamic calculation method, forcing Tproc=T1, then the TOA is larger than the actual one, then the packet that theoretically falls outside the time window TOAWE, in fact, the CFN in the air interface time has actually exceeded, still As the effective data processing, it will overlap with the normally reached data packet CFN, causing the air interface to have two frames of data in the same CFN. After receiving the data, the terminal parses the error and affects the service. If the chipoffset is added, Tproc=14ms, the packet arrival time is judged more accurately, and the oo packet that has reached the late (Too late) is discarded, which does not affect the normal data transmission. At the same time, after detecting the arrival time of the data packet in the Toa Late interval, the NodeB sends a time adjustment control frame to the RNC in time to ensure that the subsequent data is adjusted forward and falls within the time window as much as possible.

S303: The NodeB dynamically calculates the Tproc of the transport channel.

If the traffic channel parameters between the RNC and the NodeB change due to service changes, the NodeB updates TOAWS, TOAWE, and chipoffset, and needs to recalculate the value of Tproc.

S304: The NodeB processes the data packet according to the Tproc.

When receiving the FP packet of the Iub interface, the NodeB calculates the arrival time of the data packet according to the Tproc, and determines whether the received data packet is in the time window; if yes, it processes normally; if in the Late interval, the NodeB sends the time adjustment to the RNC in time. Control the frame to ensure that the subsequent data is adjusted forward and try to fall. Within the time window; if in the Too late interval, the NodeB discards the FP packet without affecting normal data transmission.

The embodiment of the invention provides a computer storage medium, which can be implemented as: a mobile storage device, a random access memory (RAM), a read-only memory (ROM), a magnetic disk or a magnetic disk. And other various media that can store program code, the computer storage medium storing executable instructions for causing the processor to execute the data packet processing method shown in FIG. 2 or FIG.

In summary, through the embodiments of the present invention, at least the following beneficial effects exist:

Obtaining the time window parameter of the transmission channel, carrying the code offset of the physical channel of the transmission channel, and calculating the time advancement Tproc of the transmission channel according to the time window parameter and the code offset, so that Tproc is related to the parameters of each transmission channel, and Tproc is calculated. The result is obtained according to the parameters of different transmission channels, which is more accurate than the existing method of setting Tproc by the system equipment, and solves the problem that the existing FP packet with large code offset caused by the system device setting Tproc cannot be processed normally. problem.

It can be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be completed by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage medium includes: a mobile storage device, a random access memory (RAM), a read-only memory (ROM), a magnetic disk, or an optical disk. A medium that can store program code.

Alternatively, the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for making A computer device (which may be a personal computer, server, or network device, etc.) performs all of the methods described in various embodiments of the present invention or section. The foregoing storage medium includes various media that can store program codes, such as a mobile storage device, a RAM, a ROM, a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A data packet processing method includes:

Obtaining a time window parameter of the transport channel, and acquiring a code offset of a physical channel carrying the transport channel;

Calculating a timing advance of the transmission channel according to the time window parameter and the code offset;

Calculating an arrival time of a frame data packet received through the transmission channel according to the timing advance, and processing the frame data packet according to the arrival time.
The data packet processing method according to claim 1, wherein the processing the frame data packet according to the arrival time comprises: determining, according to the arrival time, whether the frame data packet arrives within a time window, and if not, Then the frame data packet is discarded.
The data packet processing method according to claim 2, further comprising, after discarding the frame data packet, transmitting, to the radio network controller, a transmission time adjustment control frame configured to adjust a transmission time of the frame data packet.
The data packet processing method according to claim 1, further comprising: obtaining a new timing advance by using the changed time window parameter and the code offset calculation when the time window parameter and the code offset change.
The packet processing method according to claim 4, further comprising: replacing said timing advance with said new timing advance if said new timing advance is greater than said timing advance.
The data packet processing method according to any one of claims 1 to 5, further comprising:

Obtaining a time T1 of the base station from processing a radio frame to being sent to the air interface, and a frame length T2 of a radio frame in the communication system; the time window parameter includes a time window start time TOAWS and a time window end time TOAWE, where the code offset is Chipoffset;

Calculating the time advance of the transmission channel according to the time window parameter and the code offset includes: using a formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)- TOAWE), the time advance amount Tproc is calculated.
The data packet processing method according to claim 6, further comprising: determining a time margin ΔT3 according to the task period; calculating the time advance amount of the transmission channel according to the time window parameter and the code offset, The time advance amount Tproc is calculated using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE)+ΔT3.
A data packet processing apparatus includes:

An acquiring module, configured to acquire a time window parameter of a transport channel, and obtain a code offset of a physical channel that carries the transport channel;

a calculation module, configured to calculate a timing advance of the transmission channel according to the time window parameter and the code offset;

And a processing module, configured to calculate, according to the timing advance, an arrival time of a frame data packet received through the transport channel, and process the frame data packet according to the arrival time.
The packet processing apparatus according to claim 8, wherein said processing module is configured to determine whether said frame data packet arrives within a time window based on said arrival time, and if not, discard said frame data packet.
The packet processing apparatus according to claim 9, wherein said processing module, after discarding said frame data packet, is further configured to transmit to said radio network controller a transmission time adjustment configured to adjust said frame data packet transmission time Control frame.
The packet processing apparatus according to claim 8, wherein said calculation module is further configured to acquire a new time by using the changed time window parameter and the code offset calculation when said time window parameter and said code offset change Advance quantity.
The packet processing device according to claim 11, wherein said calculation module is further configured to: when said new timing advance is greater than said timing advance, replace said timing advance with said new timing advance .
A packet processing device according to any one of claims 8 to 12, wherein said obtaining The fetching module is further configured to acquire a time T1 of the radio frame from the start of processing a radio frame to the air interface, and a frame length T2 of a radio frame in the communication system; the time window parameter includes a time window start time TOAWS and a time window end time TOAWE, The code offset is chipoffset; the calculation module is configured to calculate the timing advance Tproc by using the formula Tproc=MAX(T1, T2+(T2*ChipOffset/38400)-TOAWE).
The packet processing apparatus according to claim 13, wherein said acquisition module is further configured to determine a time margin ΔT3 according to a task period; said calculation module being configured to utilize a formula Tproc=MAX(T1, T2+(T2*ChipOffset/) 38400) - TOAWE) + ΔT3, the time advance amount Tproc is calculated.
A communication system comprising a base station and a radio network controller, and the packet processing apparatus according to any one of claims 8 to 14.
A computer storage medium having stored therein executable instructions for performing the data packet processing method of any one of claims 1 to 7.