CN104244331B - Data distribution processing method and processing device - Google Patents

Abstract

An embodiment of the present invention provides a data offload processing method and device, the method comprising: acquiring a first load of a 3GPP access network and a second load of a wireless local area network WLAN; according to the first load and the second load, The data to be sent is offloaded between the 3GPP access network and the WLAN. The technical solution of the present invention can realize the dynamic adjustment of the distribution ratio in time according to the air interface status of the 3GPP access network and the WLAN side, thereby improving the efficiency of data distribution.

Description

Data split processing method and device

technical field

Embodiments of the present invention relate to communication technologies, and in particular, to a data distribution processing method and device.

Background technique

With the increasing demand for wireless communication services, more and more wireless communication technologies have entered or are entering the practical stage, for example, the Global System for Mobile communications/General Packet Radio System (GSM) which has been widely used , Universal Mobile Telecommunications System (UMTS for short), Long Term Evolution (LTE for short), which is entering the commercial stage, and Wireless Local Area Network (WLAN for short), etc. With the popularization of smart user equipment, people's demand for data communication surges, resulting in an increasing data load carried by cellular (Cellular) networks (GSM/UMTS/LTE) including LTE systems. Due to its simple network construction, low cost, and mature industry chain, WLAN can be used as a supplement to cellular networks, effectively sharing some data services of cellular networks, and reducing the load of cellular networks.

The main idea of offloading in the prior art is to offload data to the WLAN in the core network, and the offloading policy is configured semi-statically.

However, the prior art has the problem of low data splitting efficiency.

Contents of the invention

Embodiments of the present invention provide a method and device for data offload processing, which are used to dynamically adjust the offload ratio in time according to the air interface status of the 3GPP access network and the WLAN side, thereby improving the efficiency of data offload.

In the first aspect of the present invention, a data shunt processing method is provided, including:

Obtaining a first load of a 3GPP access network and a second load of a wireless local area network WLAN;

According to the first load and the second load, offload processing is performed on the data to be sent between the 3GPP access network and the WLAN.

In a first possible implementation manner of the first aspect, the acquiring the first load of the 3GPP access network and the second load of the WLAN includes:

The user equipment UE acquires the first buffer load corresponding to the 3GPP access network, and acquires the second buffer load corresponding to the WLAN;

According to the first load and the second load, performing offload processing on the data to be sent between the 3GPP access network and the WLAN includes:

The UE performs offloading processing on the data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

According to the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, obtaining the second buffer load corresponding to the WLAN by the UE includes:

The UE acquires the load of the buffer queue with the lowest priority among the buffer queues corresponding to the WLAN, where the load of the buffer queue with the lowest priority is the second buffer load.

According to the first aspect, in a third possible implementation of the first aspect, the acquiring the first load of the 3GPP access network and the second load of the WLAN includes:

The UE acquires the first buffer load corresponding to the 3GPP access network, and acquires the second load of the WLAN from the beacon frame sent by the WLAN access device;

According to the first load and the second load, performing offload processing on the data to be sent between the 3GPP access network and the WLAN includes:

The UE performs offloading processing on the data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second load.

According to the first aspect, in a fourth possible implementation manner of the first aspect, the acquiring the first load of the 3GPP access network and the second load of the WLAN includes:

The 3GPP network access device acquires the first buffer load corresponding to the 3GPP access network, and receives the second buffer load corresponding to the WLAN sent by the WLAN access device;

According to the first load and the second load, performing offload processing on the data to be sent between the 3GPP access network and the WLAN includes:

The 3GPP network access device performs offload processing on the data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

According to the first aspect, in a fifth possible implementation manner of the first aspect, the acquiring the first load of the 3GPP access network and the second load of the WLAN includes:

The WLAN access device receives the first buffer load corresponding to the 3GPP access network sent by the 3GPP network access device, and acquires the second buffer load corresponding to the WLAN;

According to the first load and the second load, performing offload processing on the data to be sent between the 3GPP access network and the WLAN includes:

The WLAN access device performs offloading processing on the data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

With reference to the first aspect or any one of the first to fifth possible implementations of the first aspect, in a sixth possible implementation of the first aspect, according to the first load and the The second load is to offload the data to be sent between the 3GPP access network and the WLAN, including:

If the first load is greater than the first preset threshold and the second load is smaller than the second preset threshold, then shunt the data to be sent to the WLAN for transmission; or,

If the second load is greater than a third preset threshold and the first load is less than a fourth preset threshold, the data to be sent is shunted to the 3GPP access network for transmission.

According to the sixth possible implementation manner of the first aspect, in the seventh possible implementation manner of the first aspect, after the offloading the data to be sent to the WLAN for transmission, further includes:

If the second load is greater than the third preset threshold, then determine the difference between the data entry and exit rates of the WLAN, where the difference between the data entry and exit rates is the difference between the data rate input to the WLAN and the data rate output from the WLAN value;

Returning the data to be sent to the 3GPP access network for transmission until the difference between the data input and output rates is less than or equal to zero.

According to the sixth possible implementation of the first aspect, in the eighth possible implementation of the first aspect, after offloading the data to be sent to the 3GPP access network, further include:

If the first load is greater than the first preset threshold, then determine the difference between the data entry and exit rates of the 3GPP access network, where the difference between the data entry and exit rates is the data rate input to the 3GPP access network and the output The difference in the data rate of the 3GPP access network;

Returning the data to be sent to the WLAN for transmission until the difference between the data in and out rates is less than or equal to zero.

In combination with the first aspect or any one of the sixth to eighth possible implementation manners of the first aspect, in the ninth possible implementation manner of the first aspect, the branching of the data to be sent to the Transmission in the above WLAN, including:

determining the access type of the data to be sent;

Put the data to be sent into the buffer queue corresponding to the access type.

With reference to the first aspect or any one of the first to ninth possible implementations of the first aspect, in the tenth possible implementation of the first aspect, the data to be sent is accessed in the 3GPP Perform offload processing between the network and the WLAN, including:

Determine the data flow identifier of the data to be sent;

The data packets in the data flow whose data flow identifier conforms to the preset policy are distributed between the 3GPP access network and the WLAN.

With reference to the first aspect or any one of the first to ninth possible implementation manners of the first aspect, in the eleventh possible implementation manner of the first aspect, the data to be sent is transmitted in the 3GPP interface Perform offload processing between the incoming network and the WLAN, including:

performing offload processing on the data stream to be sent between the 3GPP access network and the WLAN; or,

The session data to be sent is offloaded between the 3GPP access network and the WLAN.

In the second aspect of the present invention, a data split processing device is provided, including:

An acquisition module, configured to acquire the first load of the 3rd Generation Partnership Project 3GPP access network and the second load of the wireless local area network WLAN;

A processing module, configured to perform offload processing on data to be sent between the 3GPP access network and the WLAN according to the first load and the second load.

In a first possible implementation manner of the second aspect, the data offload processing apparatus is a user equipment UE, and the obtaining module is specifically configured to:

acquiring a first buffer load corresponding to the 3GPP access network, and acquiring a second buffer load corresponding to the WLAN;

The processing module is specifically used for:

According to the first buffer load and the second buffer load, offload processing is performed on the data to be sent between the 3GPP access network and the WLAN.

According to the first possible implementation of the second aspect, in the second possible implementation of the second aspect, the acquiring module is further configured to:

Obtain the load of the buffer queue with the lowest priority among the buffer queues corresponding to the WLAN, where the load of the buffer queue with the lowest priority is the second buffer load.

According to the second aspect, in a third possible implementation manner of the second aspect, the data offload processing device is a UE, and the acquiring module is specifically configured to:

Obtain the first buffer load corresponding to the 3GPP access network, and obtain the second load of the WLAN from the beacon frame sent by the WLAN access device;

The processing module is specifically used for:

Perform offloading processing between the 3GPP access network and the WLAN on the data to be sent according to the first buffer load and the second load.

According to the second aspect, in a fourth possible implementation manner of the second aspect, the data offload processing device is a 3GPP network access device, and the obtaining module is specifically configured to:

Acquiring the first buffer load corresponding to the 3GPP access network, and receiving the second buffer load corresponding to the WLAN sent by the WLAN access device;

The processing module is specifically used for:

According to the first buffer load and the second buffer load, offload processing is performed on the data to be sent between the 3GPP access network and the WLAN.

According to the second aspect, in a fifth possible implementation manner of the second aspect, the data offload processing device is a WLAN access device, and the acquiring module is specifically configured to:

receiving a first buffer load corresponding to the 3GPP access network sent by a 3GPP network access device, and acquiring a second buffer load corresponding to the WLAN;

The processing module is specifically used for:

According to the first buffer load and the second buffer load, offload processing is performed on the data to be sent between the 3GPP access network and the WLAN.

In combination with the second aspect or any one of the first to fifth possible implementations of the second aspect, in a sixth possible implementation of the second aspect, the processing module is further configured to:

If the first load is greater than the first preset threshold and the second load is smaller than the second preset threshold, then shunt the data to be sent to the WLAN for transmission; or,

If the second load is greater than a third preset threshold and the first load is less than a fourth preset threshold, the data to be sent is shunted to the 3GPP access network for transmission.

According to the sixth possible implementation of the second aspect, in the seventh possible implementation of the second aspect, the processing module is further configured to:

After the data to be sent is shunted to the WLAN for transmission, if the second load is greater than a third preset threshold, then determine the difference between the data entry and exit rates of the WLAN, and the difference between the data entry and exit rates is the difference between the input data rate of the WLAN and the output data rate of the WLAN;

Returning the data to be sent to the 3GPP access network for transmission until the difference between the data input and output rates is less than or equal to zero.

According to the sixth possible implementation manner of the second aspect, in the eighth possible implementation manner of the second aspect, the processing module is further configured to:

If the first load is greater than a first preset threshold after the data to be sent is distributed to the 3GPP access network, then determine the difference between the data in and out rates of the 3GPP access network, and the data in and out The rate difference is the difference between the data rate input to the 3GPP access network and the data rate output from the 3GPP access network;

Returning the data to be sent to the WLAN for transmission until the difference between the data in and out rates is less than or equal to zero.

In combination with the second aspect or any one of the sixth to eighth possible implementation manners of the second aspect, in the ninth possible implementation manner of the second aspect, the processing module is further configured to:

determining the access type of the data to be sent;

Put the data to be sent into the buffer queue corresponding to the access type.

In combination with the second aspect or any one of the first to ninth possible implementation manners of the second aspect, in a tenth possible implementation manner of the second aspect, the processing module is further configured to:

Determine the data flow identifier of the data to be sent;

The data packets in the data flow whose data flow identifier conforms to the preset policy are distributed between the 3GPP access network and the WLAN.

In combination with the second aspect or any one of the first to ninth possible implementation manners of the second aspect, in the eleventh possible implementation manner of the second aspect, the processing module is further configured to:

performing offload processing on the data stream to be sent between the 3GPP access network and the WLAN; or,

The session data to be sent is offloaded between the 3GPP access network and the WLAN.

Embodiments of the present invention provide a data offload processing method and device, by obtaining the first load and the second load, and then performing offload processing on the data to be sent between the 3GPP access network and the WLAN according to the first load and the second load, It is possible to dynamically adjust the offloading ratio in time according to the air interface status of the 3GPP access network and the WLAN side, thereby improving the efficiency of data offloading.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flow chart of Embodiment 1 of the data split processing method provided by the present invention;

2 is a schematic diagram of the principle of Embodiment 2 of the data split processing method provided by the present invention;

FIG. 3 is a flow chart of Embodiment 3 of the data split processing method provided by the present invention;

FIG. 4 is a schematic diagram of the principle of Embodiment 3 of the data split processing method provided by the present invention;

FIG. 5 is a flow chart of Embodiment 4 of the data split processing method provided by the present invention;

FIG. 6 is a schematic structural diagram of Embodiment 1 of a data split processing device provided by the present invention;

FIG. 7 is a schematic structural diagram of Embodiment 2 of the data split processing device provided by the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a flowchart of Embodiment 1 of the data offloading processing method provided by the present invention. As shown in Fig. 1, the data offloading processing method in this embodiment includes:

S101. Acquire a first load of a 3GPP access network and a second load of a WLAN.

S102. According to the first load and the second load, perform offloading processing on the data to be sent between the 3GPP access network and the WLAN.

Specifically, the executor of this embodiment may be any user equipment (User Equipment, UE for short), a third generation partnership project (3rd Generation Partnership Project, 3GPP for short) network access device, or a WLAN access device. One, wherein, if the executing subject is UE, the data to be sent is the uplink data sent by the UE to the network side; if the executing subject is a 3GPP network access device or a WLAN access device, the data to be sent is downlink data sent by the network side , the first load may be the load state of the buffer in the 3GPP network access device, and the second load may be the load state of the buffer in the WLAN access device.

After the UE, the 3GPP network access device or the WLAN access device obtains the first load of the 3GPP access network and the second load of the WLAN, according to the first load and the second load, the data to be sent can be transmitted between the 3GPP access network and the second load. The offload processing is performed between the WLANs, specifically by comparing the first load and the second load with a preset threshold, it is determined to offload the data to be sent to the 3GPP access network or the WLAN.

The offload anchor point in the prior art is usually in the core network, such as a packet data network gateway (PDN Gateway, PGW for short) or a gateway GPRS support node (Gateway GPRS Support Node, GGSN for short). Since the core network elements cannot obtain air interface information in time, Therefore, the offload strategy adopted, such as the offload ratio, cannot be adjusted in real time with the air interface conditions on the 3GPP access network and WLAN side. When the air interface on one side is congested or the channel quality changes, this semi-static ratio is still used. There will be a problem of low data shunting efficiency.

The data distribution processing method provided by this embodiment obtains the first load and the second load through the UE, the 3GPP network access device or the WLAN access device, and then according to the first load and the second load, the data to be sent is transmitted in the 3GPP access network The offload processing between the WLAN and the WLAN can realize the dynamic adjustment of the offload ratio according to the air interface status of the 3GPP access network and the WLAN side in time, thereby improving the efficiency of data offload.

Optionally, offloading the data to be sent between the 3GPP access network and the WLAN includes:

Determine the data flow identifier of the data to be sent;

The data packets in the data flow whose data flow identifier conforms to the preset policy are distributed between the 3GPP access network and the WLAN.

Optionally, offloading the data to be sent between the 3GPP access network and the WLAN includes:

Perform offloading processing on the data stream to be sent between the 3GPP access network and the WLAN; or,

The session data to be sent is distributed between the 3GPP access network and the WLAN.

Specifically, the offload processing of the data to be sent between the 3GPP access network and the WLAN may include two scenarios, one is to offload the data from the 3GPP access network to the WLAN for transmission; the other is to offload the data from the WLAN to the 3GPP interface For transmission in the network, the category detection of the data to be sent can be performed through shallow packet inspection (SPI for short) or deep packet inspection (DPI for short), so as to determine the data stream identifier of the data to be sent ( Flow ID, referred to as FID), divides the data packets in the data flow whose data flow identifier conforms to the preset policy between the 3GPP access network and the WLAN. For example, some Flows can not be divided, and some Flows can be According to the priorities of the Flows, the Flows with the lowest priorities 1 to N are distributed to WiFi.

In another possible implementation, a certain flow is offloaded to the WLAN for transmission when the service is established, that is, all data packets in the continuous process of the flow are offloaded to the WLAN for transmission from the establishment of a certain flow, That is, flow with Flow as the granularity. It can be judged whether the data packet is the first packet of Flow by detecting the serial number of the packet. Similarly, this embodiment can also realize offloading based on session (Session) granularity.

Further, S101 may include:

The UE acquires the first buffer load corresponding to the 3GPP access network, and acquires the second buffer load corresponding to the WLAN.

S102 may include:

According to the first buffer load and the second buffer load, the UE performs offloading processing on the data to be sent between the 3GPP access network and the WLAN.

Figure 2 is a schematic diagram of the principle of Embodiment 2 of the data offloading processing method provided by the present invention. As shown in Figure 2, the executive body of this embodiment is UE, and the UE can be a dual-mode terminal (LTE+WLAN), and the 3GPP buffer in the UE The buffer load of UE0 wireless data bearer (Data Radio bearer, DRB) 0 in the Buffer pool exceeds the preset offload threshold, and the Buffer load corresponding to WLAN does not exceed the preset threshold, so the data to be sent in UE0 DRB0 is transferred from 3GPP The access network is distributed to the WLAN for transmission.

Optionally, acquiring the second buffer load corresponding to the WLAN by the UE may include:

The UE acquires the load of the buffer queue with the lowest priority among the buffer queues corresponding to the WLAN, and the load of the buffer queue with the lowest priority is the second buffer load.

Specifically, if the WLAN supports IEEE 802.11e, the 802.11e revision provides an extension to the basic Distributed Coordination Function (DCF) to support Quality of Service (QoS) with priority. The Enhanced Distributed Channel Access (EDCA) mechanism defines 4 access categories (AC for short), namely AC_BK, AC_BE, AC_VI and AC_VO, and their priorities are from low to high. Each AC is defined by a specific assignment of a set of access parameters, which statistically specify the priority of each AC for channel access. Under EDCA, outgoing communications are logically sorted into 4 queues, each corresponding to an AC . Run an EDCA access function on each non-empty queue according to the access parameters of the AC to achieve contention access, so the UE can obtain the load of the buffer queue with the lowest priority among the buffer queues corresponding to the WLAN, and compare The load of the buffer queue with the lowest priority in the buffer queue corresponding to the WLAN and the preset threshold determine the busy status of the WLAN. Here, the main consideration is that if the buffer corresponding to the AC with high priority data is full, it can be sent to the low priority queue. Filling, so if AC_BK is full, it means that there is no available Buffer on the WLAN side.

Further, S101 may include:

The UE acquires the first buffer load corresponding to the 3GPP access network, and acquires the second load of the WLAN from the beacon frame sent by the WLAN access device;

S102 may include:

According to the first buffer load and the second load, the UE performs offloading processing on the data to be sent between the 3GPP access network and the WLAN.

The executor of this embodiment is still the UE. In this embodiment, the UE acquires the second load in the following manner: the UE acquires the second load of the WLAN from the beacon frame sent by the WLAN access device.

Specifically, the UE can obtain the load condition of the WLAN through the load of the Base Station Subsystem (BSS) in the beacon frame (Beacon) delivered by the Access Point (AP for short), instead of Based on the UE's own WLAN Buffer status.

Further, S101 may include:

The 3GPP network access device obtains the first buffer load corresponding to the 3GPP access network, and receives the second buffer load corresponding to the WLAN sent by the WLAN access device;

S102 may include:

The 3GPP network access device performs offload processing on the data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

The executor of this embodiment is a 3GPP network access device, and the 3GPP network access device may be, for example, an evolved node B (Evolved NodeB, eNB for short) of a base station of an LTE network, a Base Transceiver Station (Base Transceiver Station, BTS for short) of a GSM network. ), the NodeB of the UMTS network, etc., the 3GPP network access device can obtain the first buffer load, and receive the second buffer load corresponding to the WLAN sent by the WLAN access device.

Further, S101 may include:

The WLAN access device receives the first buffer load corresponding to the 3GPP access network sent by the 3GPP network access device, and acquires the second buffer load corresponding to the WLAN;

S102 may include:

The WLAN access device performs offloading processing on the data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

The executor of this embodiment is the WLAN access device, and the WLAN access device can obtain the second buffer load corresponding to the WLAN, and receive the first buffer load corresponding to the 3GPP access network sent by the 3GPP network access device.

Fig. 3 is a flow chart of the third embodiment of the data offload processing method provided by the present invention. As shown in Fig. 3, the data offload processing method in this embodiment, on the basis of the embodiment shown in Fig. Scenarios for offloading to WLAN transmission may include:

S301. Acquire a first load of a 3GPP access network and a second load of a WLAN.

S302. If the first load is greater than the first preset threshold and the second load is smaller than the second preset threshold, offload the data to be sent to the WLAN for transmission.

It can be understood that, if the first load is less than the first preset threshold, then there is no need to offload the current data to be sent, and if the second load is greater than the second preset threshold, it indicates that the Buffer status on the WLAN side is busy ( BUSY).

Optionally, splitting the data to be sent to the WLAN for transmission may include:

Determine the access type of the data to be sent;

Put the data to be sent into the buffer queue corresponding to the access type.

Figure 4 is a schematic diagram of the principle of Embodiment 3 of the data offloading processing method provided by the present invention. As shown in Figure 4, the 3GPP network access device in this embodiment is an eNB, and the WLAN access device is an AP. UE0 and UE1 with offload conditions correspond to bearers DRB0 and DRB1 that meet the offload conditions respectively. You can judge whether the UE and the bearers meet the offload conditions according to the subscription data and service type of the UE. In this embodiment, the AP in the WLAN can include 4 types of access types corresponding to 4 buffer queues, the buffer load of UE0DRB0 and UE1DRB1 exceeds the preset offload threshold, and it is determined that the data to be sent needs to be sent to the WLAN. First, according to the UE and the bearer priority of the arriving data packet, determine the AC to which the data packet is attached type. If the queue of the AC is full, it will be placed in the queue of the lower priority AC. In this embodiment, the data packet of UE0DRB0 is hung into the buffer queue of AC type VO, and the data packet of UE1DRB1 is hung into the buffer queue of AC type VI. buffer queue.

Among them, for judging the AC type of the data distributed to the WLAN, there are the following two implementation methods:

Method 1: Through the newly added IP header of the IP IN IP tunnel, use the existing Differentiated Services Code Point (DSCP for short) and WLAN AC mapping to complete the binding of DRB and AC, as shown in Table 1 :

Table 1

DSCP 802.11e (User Priority) Access type (AC) 56-63 7 Voice 48-55 6 Voice 40-47 5 video 32-39 4 video 24-31 3 Best-effort 16-23 0 Best-effort 8-15 2 background 0-7 1 background

Method 2: Mapping is performed according to a custom mapping method. For example, the QoS Class Identifier (QoS Class Identifier, QCI for short) of the DRB is directly mapped to the WLAN AC. The QCI types defined in 3GPP are shown in Table 2.

Table 2

It should be pointed out that the above are only two possible implementation manners of mapping, and other mapping manners may be used during specific implementation, and this embodiment is not limited thereto.

S303. If the second load is greater than the third preset threshold, determine the difference between the data entry and exit rates of the WLAN, where the difference between the data entry and exit rates is the difference between the data rate of the input WLAN and the data rate of the output WLAN.

S304. Return the data to be sent to the 3GPP access network for transmission, until the difference between the data input and output rates is less than or equal to zero.

Specifically, after the data to be migrated is distributed to the WLAN for transmission, if the second load is greater than the third preset threshold, that is, the Buffer on the WLAN side exceeds the preset threshold, set the Buffer status of the WLAN to BUSY, and calculate the The data in and out rate difference (Rate Gap), the service is returned to the 3GPP access network according to the priority.

The purpose of judging whether the second load of the WLAN is greater than the third preset threshold is to prevent the data corresponding to the new bearer from being offloaded to the WLAN when the load on the WLAN side is already high. The purpose of data backflow is to backflow part of the bearer data to the 3GPP access network when the data transmission rate on the WLAN side cannot support the bearer that has been offloaded to the WLAN.

The WLAN Rate Gap is calculated only when the WLAN Buffer is in the BUSY state. The Rate Gap indicates the difference between the current data rate entering the WLAN and the transmission rate of the WLAN air interface (generally a positive value). Since the WLAN Buffer is in the BUSY state, although the data rate entering the WLAN will not continue to increase, the Buffer amount may continue to increase due to exceeding the transmission capacity of the current WLAN air interface, which will eventually cause the WLAN side Buffer to overflow.

Therefore, after the Buffer of the WLAN is in the BUSY state, the rate difference between the incoming and outgoing buffers is periodically counted in real time. The statistical method is as follows:

Rate Gap＝[N(t+Period)-N(t)]/Period

Among them, N is the cache amount of Buffer, t is the starting time of statistics, the first calculation is the time t just entering the BUSY state, and after the nth time, it is t+n*Period, and Period is the statistical period of Rate Gap.

After the Rate Gap is calculated, according to the priority of the offloaded bearers, switch the offloaded bearers to the WLAN back to the 3GPP access network in order to reduce the amount of data offloaded to the WLAN side until the Rate Gap<=0 on the WLAN side.

After the data flows back to the 3GPP access network, the Buffer on the 3GPP side may continue to increase. If the first preset threshold is exceeded again, the offload request sent at this time may be rejected. As the Buffer continues to increase, the Buffer on the 3GPP side will be triggered. Congestion packet loss, backend speed limit and other mechanisms.

In the data offloading processing method provided in this embodiment, by obtaining the first load of the 3GPP access network and the second load of the WLAN, if the first load is greater than the first preset threshold and the second load is smaller than the second preset threshold, the The data to be sent is shunted to the WLAN for transmission. If the second load is greater than the third preset threshold, the difference between the data in and out of the WLAN is determined, and the data to be sent is returned to the 3GPP access network for transmission until the difference in the data in and out rate is reached. If it is less than or equal to zero, it is possible to dynamically adjust the distribution ratio in time according to the air interface status of the 3GPP access network and the WLAN side, thereby improving the efficiency of data distribution.

Figure 5 is a flow chart of Embodiment 4 of the data offloading processing method provided by the present invention. As shown in Figure 5, the data offloading processing method of this embodiment, on the basis of the embodiment shown in Figure 1, further illustrates the data to be sent Scenarios for offloading to the 3GPP access network for transmission may include:

S501. Acquire a first load of a 3GPP access network and a second load of a WLAN.

S502. If the second load is greater than the third preset threshold and the first load is less than the fourth preset threshold, offload the data to be sent to the 3GPP access network for transmission.

S503. If the first load is greater than the first preset threshold, determine the difference between the data entry and exit rates of the 3GPP access network, where the difference between the data entry and exit rates is the ratio of the data rate input to the 3GPP access network and the data rate output from the 3GPP access network difference.

S504. Return the data to be sent to the WLAN for transmission, until the difference between the data input and output rates is less than or equal to zero.

In this embodiment, the data to be sent is first distributed to the 3GPP access network for transmission, and when the first load is greater than the first preset threshold, the difference between the data in and out of the 3GPP access network is determined, and then the data to be sent is returned to the WLAN During transmission, until the difference between the data in and out rates is less than or equal to zero, the calculation method of the data in and out rate difference in the 3GPP access network is similar to the calculation method of the data in and out rate difference in the WLAN.

It should be noted that the first preset threshold in the implementation example shown in Figure 3 and Figure 5 can be a high threshold Thd_High_3GPP, and the fourth preset threshold can be a low threshold Thd_Low_3GPP, wherein the first preset threshold and the fourth preset threshold The setting of Thd_High_3GPP can be different for each UE and each DRB. One possible setting criterion is: Thd_High_3GPP should be smaller than the threshold for triggering congestion control and DRB admission on the 3GPP side. The setting of Thd_Low_3GPP mainly considers minimizing data transfer from the 3GPP side to the WLAN side "ping-pong" toggle. Certainly, other setting criteria may also be adopted in a specific implementation process.

The third preset threshold in the implementation example shown in Fig. 3 and Fig. 5 can be the high threshold Thd_High_WLAN, the second preset threshold can be the low threshold Thd_Low_WLAN, and the setting rules can also be set according to actual needs, and there is no limitation here.

In the data offloading processing method provided in this embodiment, by obtaining the first load of the 3GPP access network and the second load of the WLAN, if the second load is greater than the third preset threshold and the first load is less than the fourth preset threshold, the The data to be sent is shunted to the 3GPP access network for transmission. If the first load is greater than the first preset threshold, the difference between the data in and out of the 3GPP access network is determined, and the data to be sent is returned to the WLAN for transmission until the data in and out The rate difference is less than or equal to zero, which can dynamically adjust the distribution ratio according to the air interface status of the 3GPP access network and the WLAN side in time, thereby improving the efficiency of data distribution.

FIG. 6 is a schematic structural diagram of Embodiment 1 of the data offload processing device provided by the present invention. As shown in FIG. Obtain the first load of the 3GPP access network and the second load of the WLAN; the processing module 62 is configured to perform offload processing on the data to be sent between the 3GPP access network and the WLAN according to the first load and the second load.

Further, the data offload processing device is UE, and the obtaining module 61 is specifically used for:

Obtain a first buffer load corresponding to the 3GPP access network, and obtain a second buffer load corresponding to the WLAN;

The processing module 62 is specifically used for:

According to the first buffer load and the second buffer load, the data to be sent is distributed between the 3GPP access network and the WLAN.

Optionally, the obtaining module 61 is also used for:

The load of the buffer queue with the lowest priority among the buffer queues corresponding to the WLAN is acquired, and the load of the buffer queue with the lowest priority is the second buffer load.

Further, the data offload processing device is UE, and the obtaining module 61 is specifically used for:

Obtain the first buffer load corresponding to the 3GPP access network, and obtain the second load of the WLAN from the beacon frame sent by the WLAN access device;

The processing module 62 is specifically used for:

According to the first buffer load and the second load, the data to be sent is distributed between the 3GPP access network and the WLAN.

Further, the data offload processing device is a 3GPP network access device, and the obtaining module 61 is specifically used for:

Obtain the first buffer load corresponding to the 3GPP access network, and receive the second buffer load corresponding to the WLAN sent by the WLAN access device;

The processing module 62 is specifically used for:

According to the first buffer load and the second buffer load, the data to be sent is distributed between the 3GPP access network and the WLAN.

Further, the data distribution processing device is a WLAN access device, and the obtaining module 61 is specifically used for:

receiving the first buffer load corresponding to the 3GPP access network sent by the 3GPP network access device, and acquiring the second buffer load corresponding to the WLAN;

The processing module 62 is specifically used for:

According to the first buffer load and the second buffer load, the data to be sent is distributed between the 3GPP access network and the WLAN.

The device of this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 1 , and its implementation principle and technical effect are similar, and will not be repeated here.

Further, the processing module 62 is also used for:

If the first load is greater than the first preset threshold and the second load is smaller than the second preset threshold, the data to be sent is shunted to the WLAN for transmission; or,

If the second load is larger than the third preset threshold and the first load is smaller than the fourth preset threshold, the data to be sent is shunted to the 3GPP access network for transmission.

Optionally, the processing module 62 is also used for:

After shunting the data to be sent to the WLAN for transmission, if the second load is greater than the third preset threshold, then determine the difference between the data entry and exit rates of the WLAN, where the difference between the data entry and exit rates is the data rate of the input WLAN and the data rate of the output WLAN the difference;

Return the data to be sent to the 3GPP access network for transmission until the difference between the incoming and outgoing data rates is less than or equal to zero.

Optionally, the processing module 62 is also used for:

After splitting the data to be sent to the 3GPP access network, if the first load is greater than the first preset threshold, then determine the difference between the data entry and exit rates of the 3GPP access network, and the difference between the data entry and exit rates is the data rate of the input 3GPP access network and the difference between the data rate of the outgoing 3GPP access network;

Return the data to be sent to the WLAN for transmission until the difference between the data input and output rates is less than or equal to zero.

Optionally, the processing module 62 is also used for:

Determine the access type of the data to be sent;

Put the data to be sent into the buffer queue corresponding to the access type.

Optionally, the processing module 62 is also used for:

Determine the data flow identifier of the data to be sent;

The data packets in the data flow whose data flow identifier conforms to the preset policy are distributed between the 3GPP access network and the WLAN.

Optionally, the processing module 62 is also used for:

Perform offloading processing on the data stream to be sent between the 3GPP access network and the WLAN; or,

The session data to be sent is distributed between the 3GPP access network and the WLAN.

The device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 3 or FIG. 5 , and its implementation principles and technical effects are similar, and details are not repeated here.

Fig. 7 is a schematic structural diagram of Embodiment 2 of the data offloading processing device provided by the present invention. As shown in Fig. 7, the data offloading processing device of this embodiment includes: a transmitter 71, a receiver 72, a memory 73, and a transmitter 71 respectively. 71. A processor 74 connected to a receiver 72 and a memory 73. Of course, the data offload processing device may also include general components such as antennas, baseband processing components, intermediate radio frequency processing components, input and output devices, etc., which are not limited in this embodiment of the present invention.

Wherein, a group of program codes are stored in the memory 73, and the processor 74 is used to call the program codes stored in the memory 73 to perform the following operations:

Obtaining the first load of the 3GPP access network and the second load of the WLAN;

According to the first load and the second load, the data to be sent is distributed between the 3GPP access network and the WLAN.

It should be noted that the data offload processing apparatus shown in FIG. 4 and FIG. 5 may be used to implement any method provided in the above method embodiments.

The structural diagrams corresponding to the above-mentioned embodiments are only illustrative, and the connection relationship of each part or module is not limited to the form shown in the figure, and may be based on the situation in actual application.

In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) to execute the methods described in various embodiments of the present invention. partial steps. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example for illustration. The internal structure of the system is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (18)

1. A data distribution processing method is characterized by comprising the following steps:

acquiring a first load of a third generation partnership project (3 GPP) access network and a second load of a Wireless Local Area Network (WLAN);

according to the first load and the second load, carrying out shunting processing on data to be sent between the 3GPP access network and the WLAN;

the offloading processing of the data to be transmitted between the 3GPP access network and the WLAN according to the first load and the second load includes:

if the first load is greater than a first preset threshold and the second load is less than a second preset threshold, shunting the data to be sent to the WLAN for transmission; or,

if the second load is greater than a third preset threshold and the first load is less than a fourth preset threshold, shunting the data to be sent to the 3GPP access network for transmission;

after the offloading the data to be sent to the WLAN for transmission, the method further includes:

if the second load is greater than a third preset threshold, determining a data access rate difference value of the WLAN, wherein the data access rate difference value is a difference value between a data rate of the input WLAN and a data rate of the output WLAN;

refluxing the data to be sent to the 3GPP access network for transmission until the difference value of the data access rate is less than or equal to zero;

after the offloading the data to be sent to the 3GPP access network, the method further includes:

if the first load is greater than a first preset threshold, determining a data access rate difference value of the 3GPP access network, wherein the data access rate difference value is a difference value between a data rate input into the 3GPP access network and a data rate output from the 3GPP access network;

and refluxing the data to be sent to the WLAN for transmission until the difference value of the data in and out rates is less than or equal to zero.

2. The method of claim 1, wherein obtaining the first load of the 3GPP access network and the second load of the WLAN comprises:

user Equipment (UE) acquires a first buffer load corresponding to the 3GPP access network and acquires a second buffer load corresponding to the WLAN;

the offloading processing of the data to be transmitted between the 3GPP access network and the WLAN according to the first load and the second load includes:

and the UE performs shunting processing on data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

3. The method of claim 2, wherein the obtaining, by the UE, the second buffer load corresponding to the WLAN comprises:

and the UE acquires the load of the buffer queue with the lowest priority in the buffer queues corresponding to the WLAN, wherein the load of the buffer queue with the lowest priority is the load of the second buffer.

4. The method of claim 1, wherein obtaining the first load of the 3GPP access network and the second load of the WLAN comprises:

the method comprises the steps that UE obtains a first buffer load corresponding to a 3GPP access network, and obtains a second load of the WLAN from a beacon frame sent by WLAN access equipment;

the offloading processing of the data to be transmitted between the 3GPP access network and the WLAN according to the first load and the second load includes:

and the UE performs shunting processing on data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second load.

5. The method of claim 1, wherein obtaining the first load of the 3GPP access network and the second load of the WLAN comprises:

the method comprises the steps that 3GPP network access equipment obtains a first buffer load corresponding to a 3GPP access network and receives a second buffer load corresponding to a WLAN sent by WLAN access equipment;

the offloading processing of the data to be transmitted between the 3GPP access network and the WLAN according to the first load and the second load includes:

and the 3GPP network access equipment performs shunting processing on data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

6. The method of claim 1, wherein obtaining the first load of the 3GPP access network and the second load of the WLAN comprises:

receiving, by a WLAN access device, a first buffer load corresponding to a 3GPP access network sent by a 3GPP network access device, and acquiring a second buffer load corresponding to the WLAN;

the offloading processing of the data to be transmitted between the 3GPP access network and the WLAN according to the first load and the second load includes:

and the WLAN access equipment performs shunting processing on data to be sent between the 3GPP access network and the WLAN according to the first buffer load and the second buffer load.

7. The method of claim 1, wherein offloading the data to be sent to the WLAN for transmission comprises:

determining the access type of the data to be sent;

and hanging the data to be sent into a buffer queue corresponding to the access type.

8. The method according to any of claims 1 to 7, wherein the offloading the data to be sent between the 3GPP access network and the WLAN includes:

determining a data stream identifier of the data to be sent;

and carrying out shunting processing on the data packet in the data flow with the data flow identification conforming to the preset strategy between the 3GPP access network and the WLAN.

9. The method according to any of claims 1 to 7, wherein the offloading the data to be sent between the 3GPP access network and the WLAN includes:

distributing data flow to be sent between the 3GPP access network and the WLAN; or,

and carrying out shunting processing on the session data to be sent between the 3GPP access network and the WLAN.

10. A data distribution processing apparatus, comprising:

the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring a first load of a third generation partnership project (3 GPP) access network and a second load of a Wireless Local Area Network (WLAN);

a processing module, configured to perform, according to the first load and the second load, offloading processing on data to be sent between the 3GPP access network and the WLAN;

the processing module is further configured to:

if the first load is greater than a first preset threshold and the second load is less than a second preset threshold, shunting the data to be sent to the WLAN for transmission; or,

if the second load is greater than a third preset threshold and the first load is less than a fourth preset threshold, shunting the data to be sent to the 3GPP access network for transmission;

the processing module is further configured to:

after shunting the data to be transmitted to the WLAN for transmission, if the second load is greater than a third preset threshold, determining a data access rate difference of the WLAN, where the data access rate difference is a difference between a data rate input to the WLAN and a data rate output to the WLAN;

refluxing the data to be sent to the 3GPP access network for transmission until the difference value of the data access rate is less than or equal to zero;

the processing module is further configured to:

determining a data access rate difference of the 3GPP access network if the first load is greater than a first preset threshold after the data to be sent is shunted to the 3GPP access network, wherein the data access rate difference is a difference between a data rate input into the 3GPP access network and a data rate output from the 3GPP access network;

and refluxing the data to be sent to the WLAN for transmission until the difference value of the data in and out rates is less than or equal to zero.

11. The apparatus of claim 10, wherein the data offloading processing apparatus is a user equipment UE, and the obtaining module is specifically configured to:

acquiring a first buffer load corresponding to the 3GPP access network and acquiring a second buffer load corresponding to the WLAN;

the processing module is specifically configured to:

and according to the first buffer load and the second buffer load, carrying out shunting processing on data to be sent between the 3GPP access network and the WLAN.

12. The apparatus of claim 11, wherein the obtaining module is further configured to:

and acquiring the load of the buffer queue with the lowest priority in the buffer queues corresponding to the WLAN, wherein the load of the buffer queue with the lowest priority is the load of the second buffer.

13. The apparatus of claim 10, wherein the data offloading processing apparatus is a UE, and the obtaining module is specifically configured to:

acquiring a first buffer load corresponding to a 3GPP access network, and acquiring a second load of the WLAN from a beacon frame sent by the WLAN access equipment;

the processing module is specifically configured to:

and according to the first buffer load and the second load, carrying out shunting processing on data to be sent between the 3GPP access network and the WLAN.

14. The apparatus according to claim 10, wherein the data offloading processing apparatus is a 3GPP network access device, and the obtaining module is specifically configured to:

acquiring a first buffer load corresponding to the 3GPP access network, and receiving a second buffer load corresponding to the WLAN sent by WLAN access equipment;

the processing module is specifically configured to:

and according to the first buffer load and the second buffer load, carrying out shunting processing on data to be sent between the 3GPP access network and the WLAN.

15. The apparatus according to claim 10, wherein the data offloading processing apparatus is a WLAN access device, and the obtaining module is specifically configured to:

receiving a first buffer load corresponding to the 3GPP access network sent by a 3GPP network access device, and acquiring a second buffer load corresponding to the WLAN;

the processing module is specifically configured to:

and according to the first buffer load and the second buffer load, carrying out shunting processing on data to be sent between the 3GPP access network and the WLAN.

16. The apparatus of claim 10, wherein the processing module is further configured to:

determining the access type of the data to be sent;

and hanging the data to be sent into a buffer queue corresponding to the access type.

17. The apparatus of any one of claims 10-16, wherein the processing module is further configured to:

determining a data stream identifier of the data to be sent;

and carrying out shunting processing on the data packet in the data flow with the data flow identification conforming to the preset strategy between the 3GPP access network and the WLAN.

18. The apparatus of any one of claims 10-16, wherein the processing module is further configured to:

distributing data flow to be sent between the 3GPP access network and the WLAN; or,

and carrying out shunting processing on the session data to be sent between the 3GPP access network and the WLAN.