CN107294923A - Adjust the method and device of video coding rate - Google Patents

Abstract

The present invention provides a method and device for adjusting the video coding rate, wherein the method includes: the base station obtains at least one of the following information about the location of the terminal currently performing video services: channel quality, cell coverage information, system load; the base station according to The information structure is used to indicate an instruction to adjust the video encoding rate; the base station sends a temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing video services. The present invention solves the problem in the related art that it is difficult to ensure the fluency of video calls under limited LTE system bandwidth and changing and fluctuating channel scenarios.

Description

Method and device for adjusting video coding rate

technical field

The present invention relates to the communication field, in particular, to a method and a device.

Background technique

Under the Long Time Evolution (LTE for short) system, the VoLTE (voice over LTE) service is the most basic service service for mobile terminals, and the demand for video calls is imminent. While enjoying the pleasure of high-speed Internet access, people also put forward higher requirements for the quality of video calls. Compared with 3G, people's expectations for videos under LTE are also increasing, clearer, smoother, and free of lag. No mosaics, etc. are what customers expect.

The encoding rate of the video is described in the H264 protocol, which is divided into different levels. See Table 1. The minimum support is 64kbps, and the maximum can be 240Mbps. Different video encoding rates reflect different sensory experiences for users. However, the higher the encoding rate, the greater the required LTE system bandwidth, and because video calls are two-way services, and in the common TD-LTE system, there are too few uplink available subframes. When using a higher video encoding rate, because Resource constraints will lead to untimely scheduling and discarded packets. From the user's point of view, it is reflected in blurred video, freezes, mosaics, and image stops. This not only causes a large waste of system resources, but also does not provide higher For user services, under TDD ratio 2, when the video rate exceeds 1Mbps, the terminal can only stay in the center of the cell to ensure user experience, and if it moves a little farther from the cell, the video image will freeze and blur severely.

Table 1

VoLTE services are divided into voice services and video services, both of which are real-time transport protocol (Real-time Transport Protocol, RTP for short) data packets. Among the types of RTP data packets, there is also a Real-time Transport Control Protocol (RTCP for short) service packet, which is used to send control information of the RTP packet. There are many formats of RTCP packets. The sender (sender report, referred to as SR), the receiver report (referred to as RR), etc. are common RTCP packets, which are used to transmit the number of RTP packets sent, the number of lost packets, etc. . There is also a truncated RTCP packet, Temporary Maximum Media Stream Bit Rate Request (TMMBR for short), refer to the protocol RFC5104.

After receiving the TMMBR rate adjustment request, the terminal responds with a temporary maximum media stream bit rate notification (TemporaryMaximum Media Stream Bit Rate Notification, referred to as TMMBN), and then the terminal will encode and output according to the requested rate. However, in related technologies, how to ensure the smoothness and clarity of video calls on the base station side under the limited LTE system bandwidth and changing and fluctuating channel scenarios has become a top priority. For the above-mentioned problems in related technologies, there is no effective solution at present.

Contents of the invention

The present invention provides a method and device for adjusting the video coding rate, so as to at least solve the problem in the related art that it is difficult to ensure the fluency of video calls under the limited LTE system bandwidth and fluctuating channel scenarios.

According to one aspect of the present invention, a method for adjusting video coding rate is provided, including: the base station obtains at least one of the following information of the terminal currently performing video services: channel quality, cell coverage information, system load; the The base station constructs an instruction for instructing to adjust the video encoding rate according to the information; the base station sends a temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing video services.

Further, the base station constructing the instruction for instructing to adjust the video coding rate according to the information includes: the base station judging whether the information meets one of the following conditions: first condition: no packet loss in the video service of the terminal, And there is no video service scheduling delay, and the distance between the location of the terminal and the base station is less than the first preset distance, and the load of the cell where the terminal is located is less than the first preset threshold; the second condition: the terminal The video service generates packet loss, or the video service scheduling delay, or the distance between the cell where the terminal is located and the base station is greater than the second preset distance, or the cell load where the terminal is located is greater than the second preset threshold ; When judging that the information meets the first condition, the base station constructs a first TMMBR that increases the video coding rate; when judging that the information satisfies the second condition, the base station constructs a first TMMBR that reduces the video coding rate Two TMMBR.

Further, the base station constructing the first TMMBR to increase the video encoding rate includes: the base station receives the RTCP packet sent by the terminal currently performing video services; the base station learns the packet sending rules of the RTCP packet, and performs RTP packet header filtering, which will be used for The information for increasing the encoding rate is added to the first TMMBR; the base station constructing the second TMMBR for increasing the video encoding rate includes: the base station receives the RTCP packet sent by the terminal currently performing video services; the base station learns the RTCP packet The packet sending rule is to perform RTP packet header filtering, and add the information of reducing the encoding rate to the second TMMBR.

Further, the base station sending the temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing the video service includes: the base station sending the TMMBR to the second terminal currently performing the video service through the core network. The first TMMBR, and sending a temporary maximum media stream bit rate notification TMMBN to the first terminal through the second terminal, wherein the first terminal sends SIP UPDATE information to the second terminal to renegotiate a new rate; or, The base station sends the second TMMBR to the second terminal currently performing video services through the core network, and sends the TMMBN to the first terminal through the second terminal, wherein the first terminal sends the second TMMBN to the first terminal. The two terminals send SIPUPDATE information to renegotiate the new rate.

Further, after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing the video service, the method includes: the base station receiving the terminal currently performing the video service The TMMBN sent in response to the TMMBR.

Further, after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing video services, the method includes: not receiving the current video service within a predetermined time When the terminal of the service responds to the TMMBN sent by the TMMBR, the base station repeatedly sends the TMMBR for a predetermined number of times.

According to another aspect of the present invention, a method for adjusting the video coding rate is provided, including: the first terminal currently performing video services receives the temporary maximum media stream bit sent by the second terminal currently conducting video services in response to TMMBR A rate request TMMBN, wherein the TMMBR carries a target encoding rate for the base station to adjust the video encoding rate according to the information; the first terminal sends SIP UPDATE information to the second terminal according to the TMMBN to renegotiate a new rate; wherein, The information includes at least one of the following: channel quality, cell coverage information, and system load.

According to another aspect of the present invention, there is provided a device for adjusting the video encoding rate, which is applied to the base station side, and includes: an acquisition module, configured to acquire at least one of the following information about the location of the terminal currently performing video services: channel quality , cell coverage information, system load; an adjustment module, configured to construct an instruction for instructing to adjust the video coding rate according to the information; a first sending module, configured to send the instruction carrying the instruction to a terminal currently performing video services Temporary maximum media stream bitrate request TMMBR.

Further, the adjusting module includes: a judging unit, configured to judge whether the information satisfies one of the following conditions: the first condition: the video service of the terminal has no packet loss, and there is no video service scheduling delay, and all The distance between the location of the cell where the terminal is located and the base station is less than a first preset distance, and the load of the cell where the terminal is located is smaller than a first preset threshold; the second condition: packet loss occurs in the video service of the terminal, or the Video service scheduling delay, or the distance between the location of the cell where the terminal is located and the base station is greater than a second preset distance, or the load of the cell where the terminal is located is greater than a second preset threshold; the lifting unit is used to determine the When the information satisfies the first condition, construct a first TMMBR that increases the video coding rate; a reducing unit, configured to construct a second TMMBR that reduces the video coding rate when judging that the information satisfies the second condition.

Further, the upgrading unit includes: a first receiving subunit, configured to receive RTCP packets sent by a terminal currently performing video services; a first processing subunit, configured to learn packet sending rules of RTCP packets, and perform RTP packet header filtering , adding information for increasing the encoding rate to the first TMMBR; the reducing unit includes: a second receiving subunit, configured to receive the RTCP packet sent by the first terminal among the terminals currently performing video services; The second processing subunit is configured to learn the packet sending rule of the RTCP packet, perform RTP packet header filtering, and add the adjusted second target coding rate to the second TMMBR.

11. The apparatus of claim 10, wherein:

The first sending module is used for the core network to send the first TMMBR to the second terminal currently performing video services, and send a temporary maximum media stream bit rate notification TMMBN to the first terminal through the second terminal , wherein the first terminal sends SIP UPDATE information to the second terminal to renegotiate a new rate; or, sends the second TMMBR to the second terminal currently performing video services through the core network, and through the The second terminal sends TMMBN to the first terminal, wherein the first terminal sends SIP UPDATE information to the second terminal to renegotiate a new rate.

Further, after the base station sends the temporary maximum media stream bit rate request TMMBR carrying the adjusted target rate to the terminal currently performing the video service, the device includes: a first receiving module, configured to receive the currently ongoing video service The terminal of the video service responds to the TMMBN sent by the TMMBR.

Further, after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing video services, the device includes: a second sending module, configured to: When not receiving the TMMBN sent in response to the TMMBR by the terminal that is currently performing video services, repeat sending the TMMBR for a predetermined number of times.

According to another aspect of the present invention, there is provided a device for managing and adjusting the video encoding rate, which is applied to the first terminal side that is currently conducting video services, including: a second receiving module, configured to receive the second terminal that is currently conducting video services The terminal responds to the temporary maximum media stream bit rate request TMMBN sent by the TMMBR, wherein the TMMBR carries an instruction for instructing to adjust the video encoding rate; a third sending module is configured to send the SIP to the second terminal according to the TMMBN UPDATE information to renegotiate a new rate; wherein, the information includes at least one of the following: channel quality, cell coverage information, and system load.

Through the present invention, the base station acquires at least one of the following information of the terminal currently performing video services: channel quality, cell coverage information, system load, and then the base station constructs an instruction for instructing to adjust the video encoding rate according to the information; therefore , the base station sends a temporary maximum media stream bit rate request TMMBR carrying this instruction to the terminal currently performing video services, thereby solving the problem of the difficulty in ensuring the smoothness of video calls in the related art under limited LTE system bandwidth and fluctuating channel scenarios and improved the stability of video calls.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a flowchart one of a method for adjusting a video coding rate according to an embodiment of the present invention;

FIG. 2 is a second flow chart of a method for adjusting a video coding rate according to an embodiment of the present invention;

FIG. 3 is a structural block diagram 1 of a device for adjusting a video coding rate according to an embodiment of the present invention;

FIG. 4 is a second structural block diagram of a device for adjusting a video coding rate according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a TMMBR packet format according to an optional embodiment of the present invention;

FIG. 6 is a flow chart of uplink speed regulation performed by a base station according to an optional embodiment of the present invention;

Fig. 7 is a flowchart of downlink speed regulation performed by a base station according to an optional embodiment of the present invention;

Fig. 8 is a schematic diagram of a relationship between a base station and a core network terminal according to an alternative embodiment of the present invention.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

In this embodiment, a method for adjusting a video coding rate is provided. FIG. 1 is a flow chart 1 of a method for adjusting a video coding rate according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:

Step S102: the base station obtains at least one of the following information of the terminal currently performing video services: channel quality, cell coverage information, system load;

Step S104: the base station constructs an instruction for instructing to adjust the video coding rate according to the information;

Step S106: the base station sends a temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing video services.

Through steps S102 to S106 of this embodiment, the base station obtains at least one of the following information of the terminal currently performing video services: channel quality, cell coverage information, and system load, and then the base station constructs instructions for adjustment based on the information An instruction of the video encoding rate; therefore, the base station sends a temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing video services, thereby solving the problem of limited LTE system bandwidth and fluctuating channel scenarios in related technologies It is difficult to guarantee the smoothness of video calls under the environment, which improves the stability of video calls.

In an optional implementation of this embodiment, for the manner in which the base station involved in step S104 constructs an instruction for instructing to adjust the video encoding rate according to the information, in this embodiment it may be:

Step S104-1: The base station judges whether the information satisfies one of the following conditions: First condition: the video service of the terminal has no packet loss, and there is no video service scheduling delay, and the cell where the terminal is located is less than the first preset distance from the base station The distance, and the load of the cell where the terminal is located is less than the first preset threshold; the second condition: the video service of the terminal has packet loss, or the video service scheduling delay, or the distance between the cell where the terminal is located and the base station is greater than the second preset distance, or the load of the cell where the terminal is located is greater than the second preset threshold;

Step S104-2: When judging that the information satisfies the first condition, the base station constructs a first TMMBR that improves the video coding rate;

Step S104-3: When judging that the information satisfies the second condition, the base station constructs a second TMMBR that reduces the video coding rate.

It should be noted that, in a specific application scenario, step S104-2 may be: the base station constructs the first TMMBR to increase the video coding rate, including: the base station receives the RTCP packet sent by the terminal currently performing video services; the base station learns the sending of the RTCP packet The rule is to perform RTP packet header filtering, and add information for improving the encoding speed to the first TMMBR;

Step S104-3 may be in a specific application scenario: the base station constructs the second TMMBR to increase the video encoding rate, including: the base station receives the RTCP packet sent by the terminal currently performing video services; the base station learns the packet sending rules of the RTCP packet, and performs RTP packet filtering, and adding the information for reducing the encoding rate to the second TMMBR.

In another optional implementation of this embodiment, the base station involved in step S106 of this embodiment sends a temporary maximum media stream bit rate request TMMBR carrying the adjusted target rate to the terminal currently performing video services It can be implemented in the following way: the base station sends the first TMMBR to the second terminal currently performing video services through the core network, and sends the temporary maximum media stream bit rate notification TMMBN to the first terminal through the second terminal, wherein, the second A terminal sends SIP UPDATE information to the second terminal to renegotiate the new rate; or, the base station sends a second TMMBR to the second terminal currently performing video services through the core network, and sends TMMBN to the first terminal through the second terminal, wherein , the first terminal sends a SIP UPDATE message to the second terminal to renegotiate a new rate.

Optionally, after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing the video service, the method in this embodiment includes: the base station receiving a response from the terminal currently performing the video service TMMBN sent in TMMBR.

Based on this, after the base station sends a temporary maximum media stream bit rate request TMMBR carrying the adjusted target rate to the terminal currently performing video services, the method of this embodiment includes: not receiving the current video service within a predetermined time When the service terminal responds to the TMMBN sent by the TMMBR, the base station repeatedly sends the TMMBR for a predetermined number of times.

Fig. 2 is a flow chart 2 of a method for adjusting a video coding rate according to an embodiment of the present invention. As shown in Fig. 2, the steps of the method include:

Step S202: the first terminal currently performing video services receives the temporary maximum media stream bit rate request TMMBN sent by the second terminal currently conducting video services in response to the TMMBR, wherein the TMMBR carries the video encoding rate adjusted by the base station according to the information;

Step S204: The first terminal sends SIP UPDATE information to the second terminal according to the TMMBN to renegotiate the new rate to the target coding rate; wherein, the information includes at least one of the following: channel quality, cell coverage information, and system load.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

In this embodiment, a device for adjusting video encoding rate is also provided, and the device is used to implement the above embodiments and preferred implementation modes, and what has been explained will not be repeated here. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 3 is a structural block diagram 1 of a device for adjusting a video encoding rate according to an embodiment of the present invention. The device is applied to the base station side. As shown in Fig. 3 , the device includes: an acquisition module 32 for acquiring the current At least one of the following information where the terminal is located: channel quality, cell coverage information, system load; the adjustment module 34, coupled with the acquisition module 32, is used to adjust the video encoding rate according to the information; the first sending module 36, and the adjustment module 34 The coupling connection is used to send a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to a terminal currently performing a video service.

Optionally, the adjustment module 34 includes: a judging unit, configured to judge whether the information satisfies one of the following conditions: the first condition: the video service of the terminal has no packet loss, and there is no video service scheduling delay, and the cell where the terminal is located The distance between the location and the base station is less than the first preset distance, and the load of the cell where the terminal is located is less than the first preset threshold; the second condition: the video service of the terminal has packet loss, or the video service scheduling delay, or the cell where the terminal is located is far from the The base station distance is greater than the second preset distance, or the load of the cell where the terminal is located is greater than the second preset threshold; the lifting unit is used to construct the first TMMBR that improves the video encoding rate when the judgment information meets the first condition; the reducing unit uses When the judging information satisfies the second condition, construct a second TMMBR that reduces the video coding rate.

Optionally, the upgrading unit includes: a first receiving subunit, configured to receive an RTCP packet sent by a terminal currently performing video services; a first processing subunit, configured to learn a packet sending rule of an RTCP packet, and perform RTP packet header filtering, Add the information for improving the encoding speed to the first TMMBR; the reducing unit includes: a second receiving subunit, used to receive the RTCP packet sent by the first terminal in the terminals currently performing video services; the second processing subunit , for learning the packet sending rule of the RTCP packet, performing RTP packet header filtering, and adding the adjusted second target encoding rate to the second TMMBR.

Optionally, the first sending module is used for the core network to send the first TMMBR to the second terminal currently performing video services, and send the temporary maximum media stream bit rate notification TMMBN to the first terminal through the second terminal, wherein, The first terminal sends SIP UPDATE information to the second terminal to renegotiate the new rate; or, send the second TMMBR to the second terminal currently performing video services through the core network, and send the TMMBN to the first terminal through the second terminal, wherein , the first terminal sends a SIP UPDATE message to the second terminal to renegotiate a new rate.

Optionally, after the base station sends the temporary maximum media stream bit rate request TMMBR carrying the adjusted target rate to the terminal currently performing the video service, the device includes: a first receiving module, configured to receive the terminal currently performing the video service The terminal responds to the TMMBN sent by the TMMBR.

In this optional implementation mode, after the base station sends the temporary maximum media stream bit rate request TMMBR carrying the adjusted target rate to the terminal currently performing the video service, the device may further include: a second sending module The method is used to repeatedly send the TMMBR for a predetermined number of times when the TMMBN sent by the terminal currently performing video services in response to the TMMBR is not received within a predetermined time.

Fig. 4 is a structural block diagram 2 of a device for adjusting a video coding rate according to an embodiment of the present invention. The device is applied to the first terminal side currently performing video services. As shown in Fig. 4 , the device includes: a second receiving module 42 , for receiving the temporary maximum media stream bit rate request TMMBN sent by the second terminal currently performing video services in response to the TMMBR, wherein the TMMBR carries the target encoding rate for the base station to adjust the video encoding rate according to the information; the third sending module 44, Coupled with the second receiving module 42, it is used to send SIP UPDATE information to the second terminal according to TMMBN to renegotiate a new rate; wherein, the information includes at least one of the following: channel quality, cell coverage information, and system load.

It should be noted that each of the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following manner, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are respectively located in multiple in the processor.

The present invention is illustrated below in conjunction with optional embodiments of the present invention;

This optional embodiment provides a system and method for adaptively adjusting a video rate. The system and method according to this optional embodiment can adaptively adjust the video encoding rate according to channel quality, cell coverage, system load, etc., allowing customers to adjust video encoding in real time without perception, improve customer experience, and enhance video LTE coverage, saving system bandwidth.

In this optional embodiment, the base station determines whether the current video rate of the terminal satisfies the following conditions (1) or (2) in combination with the channel quality of the terminal, cell coverage, system load, etc. It should be noted that in this implementation In the example, the uplink and downlink are independently judged:

(1), if it is determined that there is no packet loss in the video service, and there is no scheduling delay, and the location of the terminal is optimal, and the cell load is light, it can be determined that the video user can properly increase the video encoding rate and improve the user experience.

(2) If it is determined that packet loss occurs in the video service, or the scheduling is not timely, or the location of the terminal is poor, or the cell is congested, it can be determined that the video user can appropriately reduce the video encoding rate to ensure user experience.

Based on the above (1) and (2), the base station analyzes the RTCP packet sent by the terminal, learns the packet sending rules of the RTCP packet, performs RTP packet header filtering, constructs a TMMBR, and fills the target rate of the video into the TMMBR packet. FIG. 5 is a schematic diagram of a TMMBR packet format according to an optional embodiment of the present invention. As described in FIG. 5 , refer to the protocol RFC5104.

Fig. 6 is a flow chart of the base station performing uplink speed regulation according to an optional embodiment of the present invention. As shown in Fig. 6, when the uplink of the video terminal UE1 satisfies the condition in (1) or (2), the base station On the downlink of UE1, a TMMBR requesting speed up or down is sent. After the terminal UE1 receives the TMMBR sent by the base station, it parses out that it is the RTCP information requesting speed change, and then the terminal UE1 sends the video RTP packet after the rate adjustment on the uplink. or,

Fig. 7 is a flow chart of the base station performing downlink speed regulation according to an optional embodiment of the present invention. As shown in Fig. 7, when the downlink of the video terminal UE1 satisfies the conditions in (1) or (2), the base station in the terminal On the uplink of UE1, a TMMBR requesting speed up or down is sent. After receiving the TMMBR forwarded by the core network to itself, the terminal UE2 of the other party parses out that it is the RTCP information requesting speed change, and then the terminal UE2 of the other party sends the video RTP packet after the rate adjustment on the uplink. What UE1 receives will be the video RTP packet after UE2 adjusts the rate.

Through this optional embodiment, the video user will adaptively adjust the video rate according to the location of the cell and the load of the cell itself. Guarantee the user experience of the video terminal, no freeze, no mosaic, and smooth images. It also improves LTE coverage for video users. When the cell load is light and the terminal moves closer to the center of the cell, the video encoding rate can be appropriately increased to provide a clearer and more comfortable video experience.

Fig. 8 is a schematic diagram of the relationship between a base station and a core network terminal according to an optional embodiment of the present invention. As shown in Fig. 8, eNodeB1 belongs to a first operator, and eNodeB2 is a base station of a second operator. The following embodiments are all performed on eNodeB1. A volte UE1 is connected under eNodeB1, and another terminal is placed under eNodeB2 of another operator far away, which is volte UE2. It should be noted that the processing that both terminals are under the same base station is consistent.

Example 1:

The steps of this program are as follows:

Step S302: the eNodeB1 cell is idle. Two terminals make a video call, and the video rate is 1Mbps. Control UE1 to be in the very close point of the cell of eNodeB1. After the call is made, the handheld UE1 moves slowly from the center of the cell to the edge of the cell.

Step S304: The condition determination module of eNodeB1 finds that UE1 has lost packets in the uplink, and the delay has also increased, and notifies the downlink user plane of eNodeB1, constructs a TMMBR RTCP packet with reduced speed, fills in the video rate in TMMBR as 384kbps, and the header size as the filter value 40B.

Step S306: UE1 replies TMMBN to UE2 after receiving the reduced-speed TMMBR, and then UE1 sends uplink video packets at a rate of 384 kbps. The uplink rate of UE1 is decelerated.

Example 2:

The steps of this program are as follows:

Step S402: the eNodeB1 cell is idle. Two terminals make a video call with a video rate of 64kbps. The UE1 is controlled to be in the far point of the eNodeB1 cell. After the call is made, the handheld UE1 moves slowly from the edge of the cell to the center of the cell.

Step S404: The condition determination module of eNodeB1 finds that there is no packet loss, no delay, no congestion, and low load in the uplink of UE1, and notifies the downlink user plane of eNodeB1, constructs a speed-up TMMBR RTCP packet, fills in the video rate in TMMBR as 128kbps, and the header Size is filter value 40B.

Step S406: After receiving the speed-up TMMBR, UE1 replies TMMBN to UE2, and then UE1 sends uplink video packets at a rate of 128 kbps. The uplink rate of UE1 is increased.

Example 3:

The steps of this program are as follows:

Step S502: the eNodeB1 cell is idle. Two terminals make a video call, and the video rate is 1Mbps. Control UE1 to be in the very close point of the cell of eNodeB1. After the call is made, the handheld UE1 moves slowly from the center of the cell to the edge of the cell.

Step S504: The condition judgment module of eNodeB1 finds that UE1 has lost packets in the downlink, and the delay has also increased, and notifies the uplink user plane of eNodeB1, constructs a TMMBR RTCP packet with reduced speed, fills in the video rate in TMMBR as 384kbps, and the header size is the filter value 40B.

Step S506: After receiving the reduced-speed TMMBR, UE2 replies TMMBN to UE1, and then UE2 sends uplink video packets at a rate of 384 kbps. The downlink rate of UE1 is reduced.

Example 4:

The steps of this program are as follows:

Step S602: the eNodeB1 cell is idle. Two terminals make a video call with a video rate of 64kbps. The UE1 is controlled to be in the far point of the eNodeB1 cell. After the call is made, the handheld UE1 moves slowly from the edge of the cell to the center of the cell.

Step S604: The condition determination module of eNodeB1 finds that there is no packet loss, no delay, no congestion, and low load in the downlink of UE1, and notifies the uplink user plane of eNodeB1, constructs a speed-up TMMBR RTCP packet, fills in the video rate in TMMBR as 128kbps, and the header Size is filter value 40B.

Step S606: After receiving the speed-up TMMBR, UE2 replies TMMBN to UE1, and then UE2 sends uplink video packets at a rate of 128 kbps. The downlink rate of UE1 is increased.

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

Step S1: the base station acquires at least one of the following information about the location of the terminal currently performing video services: channel quality, cell coverage information, system load;

Step S2: The base station constructs an instruction for instructing to adjust the video coding rate according to the information;

Step S3: the base station sends a temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing video services.

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

Step S1: the first terminal currently performing video services receives the temporary maximum media stream bit rate request TMMBN sent by the second terminal currently conducting video services in response to the TMMBR, wherein the TMMBR carries the video encoding rate adjusted by the base station according to the information;

Step S2: The first terminal sends SIP UPDATE information to the second terminal according to the TMMBN to renegotiate the new rate to the target coding rate; wherein, the information includes at least one of the following: channel quality, cell coverage information, and system load.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details are not repeated in this embodiment.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (14)

1. A method for adjusting video coding rate, characterized in that, comprising: The base station acquires at least one of the following information of the terminal currently performing the video service: channel quality, cell coverage information, system load; The base station constructs an instruction for instructing to adjust the video coding rate according to the information; The base station sends a temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing a video service. 2. The method according to claim 1, wherein the base station constructing an instruction for instructing to adjust the video coding rate according to the information comprises: The base station judges whether the information meets one of the following conditions: The first condition: the video service of the terminal has no packet loss, and there is no video service scheduling delay, and the distance between the cell where the terminal is located and the base station is less than the first preset distance, and the cell where the terminal is located is loaded less than a first preset threshold; The second condition: the terminal’s video service generates packet loss, or the video service scheduling delay, or the distance between the cell where the terminal is located and the base station is greater than the second preset distance, or the cell where the terminal is located the load is greater than a second preset threshold; When judging that the information satisfies the first condition, the base station constructs a first TMMBR that increases the video coding rate; When judging that the information satisfies the second condition, the base station constructs a second TMMBR that reduces a video encoding rate. 3. The method of claim 2, wherein, The construction of the base station to improve the first TMMBR of the video coding rate includes: the base station receives the RTCP packet sent by the terminal that is currently performing video services; The information of is added to the first TMMBR; The base station constructing the second TMMBR for improving the video coding rate includes: the base station receives the RTCP packet sent by the terminal currently performing video services; the base station learns the packet sending rules of the RTCP report, performs RTP packet header filtering, and reduces the information of the coding rate added to the second TMMBR. 4. The method according to claim 3, wherein the base station sending the temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing video services includes: The base station sends the first TMMBR to the second terminal currently performing video services through the core network, and sends a temporary maximum media stream bit rate notification TMMBN to the first terminal through the second terminal, wherein the first The terminal sends SIP UPDATE information to the second terminal to renegotiate a new rate; or, The base station sends the second TMMBR to the second terminal currently performing video services through the core network, and sends the TMMBN to the first terminal through the second terminal, wherein the first terminal sends the second TMMBN to the first terminal. The two terminals send SIP UPDATE information to renegotiate the new rate. 5. The method according to claim 1, wherein after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing video services, the method comprises : The base station receives the TMMBN sent by the terminal currently performing the video service in response to the TMMBR. 6. The method according to claim 5, wherein after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing video services, the method comprises : When the TMMBN sent by the terminal currently performing video services in response to the TMMBR is not received within a predetermined time, the base station repeats sending the TMMBR for a predetermined number of times. 7. A method for adjusting the video encoding rate, comprising: The first terminal currently performing video services receives the temporary maximum media stream bit rate request TMMBN sent by the second terminal currently conducting video services in response to the TMMBR, wherein the TMMBR carries the target encoding for the base station to adjust the video encoding rate according to the information rate; The first terminal sends SIP UPDATE information to the second terminal according to the TMMBN to renegotiate a new rate; Wherein, the information includes at least one of the following: channel quality, cell coverage information, and system load. 8. A device for adjusting video encoding rate, applied to the base station side, characterized in that it comprises: An acquisition module, configured to acquire at least one of the following information of the terminal currently performing video services: channel quality, cell coverage information, system load; An adjustment module, configured to construct an instruction for instructing to adjust the video coding rate according to the information; The first sending module is configured to send the temporary maximum media stream bit rate request TMMBR carrying the instruction to the terminal currently performing the video service. 9. The device according to claim 8, wherein the adjustment module comprises: A judging unit, configured to judge whether the information satisfies one of the following conditions: The first condition: the video service of the terminal has no packet loss, and there is no video service scheduling delay, and the distance between the cell where the terminal is located and the base station is less than the first preset distance, and the cell where the terminal is located is loaded less than the first preset threshold; The second condition: the terminal’s video service generates packet loss, or the video service scheduling delay, or the distance between the cell where the terminal is located and the base station is greater than the second preset distance, or the cell where the terminal is located the load is greater than a second preset threshold; A boosting unit, configured to construct a first TMMBR that boosts the video coding rate when judging that the information satisfies the first condition; A reducing unit, configured to construct a second TMMBR that reduces the video encoding rate when judging that the information satisfies the second condition. 10. The apparatus of claim 9, wherein: The lifting unit includes: a first receiving subunit, used to receive the RTCP packet currently being sent in a terminal that is performing video services; a first processing subunit, used to learn the packet sending rules of the RTCP report, perform RTP packet header filtering, and use Adding the information for improving the encoding speed to the first TMMBR; The reducing unit includes: a second receiving subunit, used to receive the RTCP packet sent by the first terminal among the terminals currently performing video services; a second processing subunit, used to learn the packet sending rules of the RTCP packet, and perform RTP packet header filtering, adding the adjusted second target coding rate to the second TMMBR. 11. The apparatus of claim 10, wherein: The first sending module is used for the core network to send the first TMMBR to the second terminal currently performing video services, and send a temporary maximum media stream bit rate notification TMMBN to the first terminal through the second terminal , wherein the first terminal sends SIP UPDATE information to the second terminal to renegotiate a new rate; or, sends the second TMMBR to the second terminal currently performing video services through the core network, and through the The second terminal sends TMMBN to the first terminal, wherein the first terminal sends SIPUPDATE information to the second terminal to renegotiate a new rate. 12. The device according to claim 10, wherein after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing video services, the device comprises: : The first receiving module is configured to receive the TMMBN sent by the terminal currently performing video services in response to the TMMBR. 13. The device according to claim 12, wherein after the base station sends a temporary maximum media stream bit rate request TMMBR carrying an adjusted target rate to the terminal currently performing video services, the device includes : The second sending module is configured to repeatedly send the TMMBR for a predetermined number of times when the TMMBN sent by the terminal currently performing video services in response to the TMMBR is not received within a predetermined time. 14. A device for adjusting the video encoding rate, applied to the first terminal side currently conducting video services, characterized in that it includes: The second receiving module is used to receive the temporary maximum media stream bit rate request TMMBN sent by the second terminal currently performing video services in response to the TMMBR, wherein the TMMBR carries an instruction for instructing to adjust the video encoding rate; A third sending module, configured to send SIP UPDATE information to the second terminal according to the TMMBN to renegotiate a new rate; Wherein, the information includes at least one of the following: channel quality, cell coverage information, and system load.