WO2009030060A1

WO2009030060A1 - A method and device to control packet transmission in ip-based wireless communication networks

Info

Publication number: WO2009030060A1
Application number: PCT/CN2007/002628
Authority: WO
Inventors: Yan Zhao; Mingli You; Pingping Wen
Original assignee: Alcatel Shanghai Bell Company, Ltd.; Alcatel Lucent
Priority date: 2007-09-03
Filing date: 2007-09-03
Publication date: 2009-03-12
Also published as: CN101785338A

Abstract

A method and device to control packet transmission when a mobile station switches between voice period and silence period in IP-based wireless communication networks is disclosed. In the said networks, both mobile station and base station detect at the same time the type of packet during a voice session. It is needless to inform the type of packet (including voice packet and silence packet) by signal between mobile station and base station. Consequently, the spending of signal is saved, and the veracity to identify voice packet and silence packet is improved.

Description

Method and apparatus for controlling data packet transmission in a wireless voice communication network

The present invention relates to a wireless voice communication network based on the IP protocol, and more particularly to user equipment and a base station in a wireless voice communication network based on the IP protocol. Background technique

In a prior art IP-based wireless voice communication network, after the base station allocates resources for the talk period to the user equipment, the user equipment always occupies the resource regardless of whether it is in the conversation period or the silent period. Specifically, after the user equipment transitions from the conversation period to the silent period, even if the user equipment does not use the resources occupied by the user equipment during the conversation period to transmit the data packet, the user equipment does not release the resource, so that other user equipment cannot be used. This idle resource, therefore, causes a lot of waste of resources.

In order to solve the above problem of resource waste, in the prior art IP-based wireless voice communication network, two solutions are proposed for the above problems:

The first solution: Since during the conversation period, the user equipment periodically generates a voice data packet every 20 ms, and during the silent period, the user equipment periodically generates a silent data packet every 160 ms. Therefore, by detecting the data packet generated by the user equipment, it can be determined whether the current user equipment is in a conversation period or a silent period, and further, the base station can allocate and release resources according to different periods of the current user equipment. Thereby saving resources to a certain extent.

Specifically, in this solution, only the user equipment detects the data packet generated by the user equipment, and the base station does not detect the data packet. When the user equipment changes from the conversation period to the silent period, the user equipment sends a resource release request message to the base station by using a common signaling channel, and after receiving the resource release request message, the base station releases the user equipment during the conversation period. The occupied resource and allocate the resource to other user equipment;

When the user equipment transitions from the silent period to the conversation period, the user equipment sends the resource allocation request message to the base station by using a common signaling channel, and receives a resource allocation response message from the base station, where the resource allocation response message informs the user equipment Which resource should I use? Have a conversation.

The second solution: The user equipment does not detect the data packets it generates, but only the base station detects the data packets. Specifically, when the user equipment is in the conversation period, it uses the resources occupied by the conversation period to send a voice data packet to the base station, and the base station receives the data packet from the user equipment and detects the data packet until the user equipment changes from the conversation period. When the base station detects that the data packet from the user equipment is a silent data packet, the base station notifies the user equipment to stop using the resource allocated for the user equipment by the base station for the conversation period.

When the user equipment is in the silent period, each time the user equipment receives the data packet from the upper layer, the user equipment informs the base station of the size of the data packet in the buffer by signaling, and then the base station according to the data packet in the buffer The size determines the type of the data packet generated in the user equipment, and then the user equipment is allocated signaling resources for transmitting the silent data packet until the user equipment changes from the silent period to the conversation period, and the base station according to the data in the buffer After the size of the packet determines that the data packet generated in the user equipment is a voice data packet, the user equipment is allocated a resource for the conversation period in a signaling manner.

However, the above two prior art solutions also have great drawbacks: For the first solution, only the user equipment detects the voice data packets or silent data packets generated by the user equipment, and the base station does not work on the user equipment. The generated data packet is detected, so that only the user equipment knows whether it is currently in the silent period or the talk period, and the base station is not aware of it. When the base station needs to allocate or release resources to the user equipment, it must communicate with the user equipment to obtain the status information (ie, the talk period or the silent period) of the current user equipment. Specifically, when the user equipment transitions between the conversation period and the silent period, the user equipment communicates with the base station in a signaling manner to implement resource allocation or release. Therefore, this causes a large amount of signaling overhead.

For the second solution, each time the base station detects that the data packet generated by the user equipment is changed from the voice data packet to the silent data packet, the base station notifies the user equipment to stop using the base station as the user equipment. Allocating resources for the talk period, and when the user equipment is in the silent period, the user equipment informs the base station of the size of the data packet in the buffer by signaling manner after the user equipment receives the data packet from the upper layer. Base station The type of data packet generated in the user equipment is determined according to the size of the data packet in the buffer. Therefore, a large amount of signaling overhead is incurred. Summary of the invention

In order to solve the above-mentioned drawbacks in the prior art, the present invention proposes a method and apparatus for controlling data packet transmission during talk session and silent period handover of voice communication in a wireless communication network based on IP protocol.

According to an aspect of the present invention, a method for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a user equipment of a wireless communication network based on an IP protocol is provided, wherein the method includes the following steps : a. when detecting that the to-be-sent packet is converted from the voice packet to the first silent packet, transmitting the first silent packet to the base station via the resource occupied by the session; b. receiving from the a first resource allocation indication message sent by the base station via the common signaling channel; c transmitting the next silent data packet to the base station by using the resource allocated by the first resource allocation indication message, repeating steps b and c above until detected The data packet to be transmitted is converted from a silent data packet to a voice data packet.

According to another aspect of the present invention, there is provided a method for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a base station of a wireless communication network based on an IP protocol, wherein the method comprises the following steps : i. when detecting that the received data packet from the user equipment is converted from the voice data packet to the first silent data packet, releasing the resources occupied by the user equipment during the conversation period; ii. in the next silent data packet Before the arrival, the third resource allocation indication message is sent to the user equipment via the common signaling channel, and the above step ii is repeated until it is detected that the received data packet from the user equipment is converted from the silent data packet to the voice data packet.

According to another aspect of the present invention, there is provided a handover assisting control apparatus for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a user equipment of a wireless communication network based on an IP protocol, wherein The handover assisting control device includes: a first sending device, configured to: when detecting that the to-be-sent data packet is converted from the voice data packet to the first silent data packet, send the first silent number by using resources occupied by the conversation period And a first receiving device, configured to receive a first resource allocation indication message sent by the common base station by using a common signaling channel, and a second sending device, configured to be allocated by using the first resource allocation indication message The resource sends the next quiet data packet to the base station, where the first receiving device is further configured to repeatedly receive the first resource allocation indication message sent by the common base station from the base station, and the second sending device further And transmitting, by the resource allocated by the received first resource allocation indication message, the next silent data packet to the base station, until it is detected that the data packet to be sent is converted from the silent data packet to the voice data packet.

According to another aspect of the present invention, there is provided a handover assist control apparatus for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a base station of a wireless communication network based on an IP protocol, wherein the handover The auxiliary control device includes: a resource release device, configured to: when detecting that the received data packet from the user equipment is converted from the voice data packet to the first silent data packet, release the resource occupied by the user equipment during the conversation period a ninth sending device, configured to repeatedly send a third resource allocation indication message to the user equipment via a common signaling channel, until the received data packet from the user equipment is detected, before the next quiet data packet arrives Transition from silent packets to voice packets.

In the present invention, the user equipment and the base station respectively detect the data packet generated by the user equipment to obtain the current state (ie, the conversation period or the silent period) of the user equipment. Specifically, the user equipment detects the type of the data packet generated by the user equipment, and sends the data packet to the base station. After receiving the data packet from the user equipment, the base station also detects the data packet, and according to the detection result. To schedule resources allocated to user devices. In this way, the user equipment does not need to communicate with the base station in a signaling manner to inform the base station of its current state, which greatly saves signaling overhead, and the present invention detects the data packet generated by the user equipment in the PDCP sublayer. This greatly improves the accuracy of discriminating voice packets or silent packets. DRAWINGS

A detailed description of non-limiting embodiments made by reading the following figures Other characteristics, objects, and advantages of the present invention will become more apparent. FIG. 1 illustrates control during a talk period and silent period switching of voice communication in an IP protocol based wireless communication network in accordance with the present invention. Schematic diagram of data packet transmission; FIG. 2 is a schematic diagram showing the principle of controlling data packet transmission during a talk period and a silent period handover of a voice communication in an IP protocol-based wireless communication network according to the present invention;

3 illustrates a flow chart of a method for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a user equipment of a wireless communication network based on an IP protocol, in accordance with an embodiment of the present invention;

FIG. 4a shows a specific implementation of the step S15 in FIG. 3, that is, a flowchart of a method for a user equipment to send a voice data packet to a base station by a resource allocated by a base station for a talk period;

FIG. 4b shows another embodiment of the step S15 in FIG. 3, that is, a flowchart of a method for a user equipment to send a voice data packet to the base station by using a resource allocated for a talk period by a base station;

Figure 4c shows a further embodiment of the step S15 of Figure 3, that is, a flowchart of a method for a user equipment to transmit a voice data packet to a base station by a resource allocated for a talk period by a base station;

5 illustrates a flow chart of a method for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a base station of a wireless communication network based on an IP protocol, in accordance with another embodiment of the present invention;

Figure 6a shows a specific embodiment of the step S24 of Figure 5, which is a flow chart of a method for allocating resources for a talk period for the user equipment;

Figure 6b shows another embodiment of the step S24 of Figure 5, which is a flow chart of a method for allocating resources for a talk period for the user equipment;

Figure 6c shows a further embodiment of the step S24 of Figure 5, which is a flow chart of a method for allocating resources for a talk period for the user equipment;

FIG. 7 illustrates a session period and a silent period for voice communication in a user equipment of an IP protocol-based wireless communication network according to an embodiment of the present invention. A schematic diagram of a structure of a handover assist control device for controlling data packet transmission during a change period;

FIG. 8a shows a specific embodiment of the third transmitting device 14 of FIG. 7 for transmitting a voice data packet to a third transmitting device 14 of the base station by a resource allocated for a talk period allocated by a base station. Schematic;

Figure 8b shows another embodiment of the third transmitting device 14 of Figure 7, that is, a third transmitting device 14 for transmitting voice data packets to the base station by resources allocated for the talk period by the base station Schematic diagram of the structure;

Figure 8c shows still another embodiment of the third transmitting device 14 of Figure 7, that is, a third transmitting device 14 for transmitting voice data packets to the base station by resources allocated for the talk period by the base station Schematic diagram of the structure;

FIG. 9 illustrates a handover assist control apparatus for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a base station of a wireless communication network based on an IP protocol according to another embodiment of the present invention. Schematic;

FIG. 10a shows a specific implementation of the first resource allocation device 23 in FIG. 9, that is, a schematic structural diagram of a first resource allocation device 23 for allocating resources for a session period for the user equipment;

FIG. 10b shows another embodiment of the first resource allocation device 23 of FIG. 9, that is, a schematic structural diagram of a first resource allocation device 23 for allocating resources for a session period for the user equipment;

Figure 10c shows a further embodiment of the first resource allocation device 23 of Figure 9, namely a schematic diagram of a first resource allocation device 23 for allocating resources for a talk period for the user equipment. detailed description

The invention is described in detail below with reference to the accompanying drawings:

1 is a diagram showing control of data packet transmission during talk session and silent period handover of voice communication in an IP protocol based wireless communication network in accordance with the present invention.

In the VoIP voice communication according to the present invention, the user equipment 1 and the base station 2 simultaneously detect the data packet. Specifically, when the user equipment 1 is in the conversation period, the user equipment 1 After detecting the generated data packet and transmitting the voice data packet to the base station 2 through its resource for the conversation period, the base station 2 also detects the data packet after receiving the data packet from the user equipment 1 to determine the data packet. The packet is a voice packet.

When the user equipment 1 transitions from the conversation period to the silent period, the user equipment 1 detects that the data packet generated by the user equipment 1 is the first silent data packet, and then sends the data packet to the base station 2 through the resources occupied by the user during the conversation period. At the same time, the resource used for the conversation period is released, and the base station 2 receives the data packet from the user equipment 1 and detects it. After detecting that the data packet is a silent data packet, the user equipment 1 is released for the previous occupation. Resources in the conversation period, and allocate the resources to other users.

When the user equipment 1 is in the silent period, the base station 2 periodically allocates resources for the user equipment 1 for the transmission of the silent data packet by using the signaling method. After receiving the resource allocation message from the base station 2, the user equipment 1 uses the resource. Send a silent packet to base station 2.

When the user equipment 1 transitions from the silent period to the conversation period, the base station 2 assigns the user equipment 1 its resources for the conversation period, and the user equipment 1 uses the resources to transmit the voice data packets to the base station 2.

2 is a schematic diagram showing the principle of controlling packet transmission during talk session and silent period handover of voice communication in an IP protocol based wireless communication network in accordance with the present invention. The invention will now be further described with reference to Figure 2 in conjunction with Figure 1.

As shown in FIG. 2, for the uplink, in the PDCP sublayer, when the detection module 1 in the user equipment 1 detects the data packet generated by the user equipment 1 to determine the type of the data packet, the PDCP sublayer passes through the internal original. The message tells the type of the data packet detected by the detection module 1 by the state synchronizer 1 located in the MAC sublayer. At the same time, the robust header compression module 1 (ROHC 1 ) in the PDCP sublayer performs header compression on the data packet, and then the encryption module 1 (Security 1 ) encrypts the header compressed data packet; In the RLC sublayer, segmentation module 1 (not shown in Figure 2 for simplicity) segments the encrypted packets from the PDCP sublayer; in the MAC sublayer, multiplexing module 1 (for simplicity) The packet from the RLC sublayer is multiplexed by the segmented data packet; finally, the user equipment 1 transmits the data packet subjected to the above processing to the base station 2. After the base station 2 receives the data packet from the user equipment 1, first in the MAC sublayer, the demultiplexing module 2 (not shown in FIG. 2 for the sake of clarity) performs the reception of the data packet from the user equipment 1. Demultiplexing; secondly, in the RLC sublayer, the reassembly module 2 (for simplicity, not shown in FIG. 2) reassembles the demultiplexed data packets in the MAC sublayer, and then decrypts them in the PDCP sublayer. Module 2 (security 2) decrypts the reassembled data packet in the RLC sublayer. Subsequently, the robust header decompression module 2 (ROHC 2) performs packet header decompression on the decrypted data packet. Finally, it is located in the PDCP subsection. The detecting module 2 in the layer detects the header decompressed data packet to determine the type of the data packet. After detecting the type of the data packet, the PDCP sublayer informs the resource allocation scheduling in the MAC sublayer through the internal primitive. Module 2 (Scheduler 2) The type of packet detected by this detection module 2.

Specifically, first, after the detecting module 1 in the user equipment 1 detects the first silent data packet (a data packet before the silent data packet is a voice data packet), the method is sent through the resources occupied by the session during the conversation period. The first silent data packet is sent to the base station 2. After receiving and detecting the first silent data packet from the user equipment 1, the base station 2 puts the resources allocated for the user equipment 1 for the conversation period and starts timing. It should be understood by those skilled in the art that after the user equipment 1 learns that it successfully sends the first silent data packet to the base station 2, it can also release its resources occupied during the conversation period. Further, after the base station 2 releases the resources allocated for the user equipment 1 for the conversation period, the resource may be allocated to other user equipments for use. When the silent period (160ms) expires, the base station 2 transmits a resource allocation indication message to the user equipment 1 via the common signaling channel to allocate resources for transmitting the next data packet to the user equipment 1.

Next, the user equipment 1 receives the resource allocation indication message transmitted from the base station 2 via the common signaling channel. Then, the user equipment 1 sends the next silent data packet to the base station 2 according to the resource allocated by the resource allocation indication message.

The user equipment 1 detects the data packet to be sent each time before sending the data packet, and determines the type of the data packet currently generated. If the detected data packet to be transmitted is still a silent data packet, the user equipment 1 transmits the silent data packet by using the resource allocated by the received resource allocation indication message from the base station 2; if the detected data packet is to be transmitted The data packet is converted from the silent data packet to the voice data packet, and the user equipment 1 transmits the voice data packet to the base station 2 through the resource allocated by the base station 2 for the talk period.

The present invention will be further described in detail below with reference to Figs. 3-10 in conjunction with Fig. 2. 3 illustrates a flow diagram of a method for controlling data packet transmission during a talk session and a silent period switch of a voice communication in a user equipment of an IP-based wireless communication network, in accordance with an embodiment of the present invention.

In this embodiment, step S11 is first performed, and the first silent data packet is sent to the base station via the resource occupied by the session;

Secondly, step S12 is performed to detect a data packet to be subsequently sent to determine whether it is converted from a silent data packet to a voice data packet;

If the detected data packet to be transmitted is not converted by the silent data packet to the voice data packet, first step S13 is performed to receive the first resource allocation indication sent from the base station via the common signaling channel.

Step S14, the next static data packet is sent to the base station by using the resource allocated by the first resource allocation indication message;

Then returning to step S12, performing step S12 again;

If the detected data packet to be transmitted is changed from the silent data packet to the voice data packet, first performing step S15, and transmitting a voice data packet to the base station by using the resource allocated by the base station for the conversation period;

Then, step S16 is performed to detect a data packet to be subsequently sent to determine whether it is converted from a voice data packet to a silent data packet;

If the detected data packet to be sent is not converted from the voice data packet to the silent data packet, the process returns to step S15 and the following steps;

If the detected data packet to be transmitted is changed from the voice data packet to the silent data packet, the process returns to step S11 and the following steps.

It should be understood by those skilled in the art that in the specific application, the above steps S11-S1.6 are repeated loop execution.

Specifically, the user equipment 1 first detects the data packet generated by the user equipment 1 to determine the type of the data packet (voice data packet or silent data packet) that is currently generated, thereby judging the data packet. The current state (talk period or silent period). More specifically, the user equipment 1 detects the data packet generated by the user equipment 1 at the PDCP sublayer, and detects the generated data packet by using a detection module 1 designed in advance in the PDCP sublayer to determine the type of the data packet. . The detection module 1 may be located in the robust head compression module 1 (ROHC 1 ) in the PDCP sublayer or on the robust head compression module 1 (ROHC 1 ). It should be understood by those skilled in the art that the step of detecting the data packet generated by the user equipment 1 may be performed before the header compression of the data packet generated by the user equipment 1 is performed, and details are not described herein. Because the header compression of the packet generated by the user equipment 1 once the robust header compression module 1 (ROHC 1 ) is header compressed, the size of the data packet is changed, so that the data packet generated by the user equipment 1 cannot be accurately detected. Type (voice packet or silent packet).

Further, detecting the data packet generated by the user equipment 1 may include detecting the identifier of the data packet, and may also detecting the size of the payload of the data packet. It should be understood by those skilled in the art that the detection of the data packet generated by the user equipment 1 may further include other forms of detection, as long as the type of the data packet generated by the user equipment 1 can be accurately determined by the detection method (voice). Packets or silent packets), you will not repeat them here.

Further, after the detection module 1 receives the data packet generated by the user equipment 1, the relevant identification bits in the data packet are analyzed to determine the type of the data packet. Specifically, in the case where the format of the packet is defined by the RFC3389 standard, the detecting module 1 in the user equipment 1 determines the type of the packet by detecting the RTP payload type bit in the RTP header of the packet from the upper layer. In the case where the format of the packet is defined by the RFC3267 standard, the detecting module 1 in the user equipment 1 determines the type of the packet by detecting the field type bit in the AMR payload of the packet from the upper layer.

It should be understood by those skilled in the art that detecting the data packet generated by the user equipment 1 may further include detecting other related identifiers included in the data packet, and the data may be determined by detecting the identifier. The type of the package can be used, and will not be described here.

In the PDCP sublayer, when the detection module 1 feeds the data packet generated by the user equipment 1 After the row detection determines the type of the data packet, the PDCP sublayer informs the state synchronization module 1 (state synchronizer 1) located in the MAC sublayer by the internal primitive of the type of the data packet detected by the detection module 1. At the same time, first, in the PDCP sublayer, header compression is performed on the data packet, and then the header compressed data packet is encrypted; then, in the RLC sublayer, the PDCP sublayer is encrypted. The data packet is segmented; in the MAC sublayer, the fragmented data packet from the RLC sublayer is multiplexed; finally, the user equipment 1 transmits the data packet subjected to the above processing to the base station 2.

Specifically, first, after the detecting module 1 in the user equipment 1 detects the first silent data packet (a data packet before the silent data packet is a voice data packet), the method is sent through the resources occupied by the session during the conversation period. The first silent data packet is sent to the base station 2. After receiving and detecting the first silent data packet from the user equipment 1, the base station 2 releases the resources allocated for the user equipment 1 for the conversation period and starts timing. It should be understood by those skilled in the art that after knowing that the user successfully transmits the first silent data packet to the base station 2, the user equipment 1 can also release its resources occupied during the conversation period. Further, after the base station 2 releases the resources allocated for the user equipment 1 for the conversation period, the resource may be allocated to other user equipments for use. When the silent period (160ms) expires, the base station 2 sends a first resource allocation indication message to the user equipment 1 via the common signaling channel, where the first resource allocation indication message includes the allocation of the next data packet for the user equipment 1 to be allocated. Resources. It should be understood by those skilled in the art that the base station 2 may also send the first resource allocation indication message to the user equipment 1 via the common signaling channel before the expiration of the silent period (160 ms), as long as the base station 2 can allocate the user equipment 1 to be silent. The resource that can be used to transmit the next data packet when the cycle arrives is not mentioned here.

Next, the user equipment 1 receives the first resource allocation indication message sent by the base station 2 via the common signaling channel, where the first resource allocation indication message includes the resource allocated for the user equipment 1 to transmit the next data packet. Then, the user equipment 1 transmits the next silent data packet to the base station 2 according to the resource allocated by the first resource allocation indication message.

The user equipment 1 detects the data packet to be sent each time before sending the data packet, and determines the type of the data packet currently generated. If the detected data packet to be transmitted is still a silent data packet, the user equipment 1 receives the first received from the base station 2 The resource allocated by the resource allocation indication message transmits the silent data packet; if the detected data packet to be transmitted is converted from the silent data packet to the voice data packet, the user equipment 1 transmits the voice through the resource allocated by the base station 2 for the conversation period. The packet is transmitted to the base station 2, and this step corresponds to step S15 in FIG.

Specifically, in different embodiments, the step S15 may have different implementations. Various specific embodiments of step S15 will now be described with reference to Fig. 3 in conjunction with Figs. 4a, 4b and 4c.

Figure 4a shows a specific embodiment of the step S15 of Figure 3, which is a flow diagram of a method by which a user equipment transmits a voice data packet to a base station by a resource allocated for a talk period by a base station.

In this embodiment, step S151 is performed, and the voice data packet for the session period allocated by the received latest first resource allocation indication message sent by the base station via the common signaling channel is sent to the Said base station.

Specifically, when the user equipment 1 detects that the data packet to be transmitted is converted from the silent data packet to the first voice data packet, the user equipment 1 continues to wait for the first resource allocation indication message sent by the base station 2 via the common signaling channel, The first resource allocation indication message includes the resource allocated to the base station 2 for transmitting the next silent data packet to the user equipment 1, but the next data packet is not the silent data packet but the first voice data packet. When the user equipment 1 extracts the resource originally used for transmitting the next silent data packet from the first resource allocation indication message, uses the resource as a resource of its conversation period, and uses the resource to send the subsequent voice data packet to The base station 2 returns to perform step S11 in FIG. 3 until it detects that the data packet to be transmitted is changed from the voice data packet to the silent data packet.

Figure 4b shows another embodiment of the step S15 of Figure 3, which is a flow diagram of a method by which a user equipment transmits a voice data packet to a base station by a resource allocated for a talk period by a base station.

In this embodiment, step S151 ′ is first performed, and the first voice data packet is sent by using the resource allocated by the latest first resource allocation indication message sent by the base station via the common signaling channel. To the base station;

Secondly, performing step S152, receiving the public signaling signal from the base station a new second resource allocation indication message sent by the channel;

Finally, in step S153, a new resource for the talk period allocated by the new second resource allocation indication message is sent to the base station.

Specifically, when the user equipment 1 detects that the data packet to be transmitted is converted from the silent data packet to the first voice data packet, the user equipment 1 first continues to wait to receive the first resource allocation indication sent by the base station 2 via the common signaling channel. The message, the first resource allocation indication message includes the resource allocated to the base station 2 for transmitting the next silent data packet to the user equipment 1, but the next data packet is not the silent data packet but the first voice data packet. When the user equipment 1 extracts the resource originally used for transmitting the next silent data packet from the first resource allocation indication message, the first voice data packet is sent to the base station 2 by using the resource.

Next, the user equipment 1 transmits the first voice data packet to the base station 2 by using the resource allocated by the latest first resource allocation indication message (equivalent to sending a resource request message to the base station 2); the base station 2 receives and detects the user equipment from the user equipment. After the first voice data packet (corresponding to a resource request message), the user equipment 1 is allocated a new resource for the conversation period, and the second resource allocation indication message is sent to the user equipment 1, wherein The resource allocation indication message includes a new resource allocated for the user equipment 1 for the conversation period; finally, the user equipment 1 receives the new second resource allocation indication message sent from the base station 2 via the common signaling channel, and utilizes The resource allocated for the conversation period by the second resource allocation indication message sends the subsequent voice data packet to the base station 2, until it is detected that the data packet to be transmitted is changed from the voice data packet to the silent data packet, and then returns to perform FIG. Step S1 l.

Figure 4c shows a further embodiment of the step S15 of Figure 3, which is a flow diagram of a method by which a user equipment transmits a voice data packet to a base station by a resource allocated for a talk period by a base station.

In this embodiment, step S151 is first performed, and the first resource request message is sent to the base station via the common signaling channel;

Secondly, executing step S152", receiving a first resource allocation response message sent by the base station via the common signaling channel;

Finally, step S153 is performed, and is allocated by the first resource allocation response message. The resource for the talk period sends a voice data packet to the base station.

Specifically, after the user equipment 1 detects that the data packet to be transmitted is converted from the silent data packet to the first voice data packet, the user equipment 1 first sends the first resource request message to the base station 2 via the common signaling channel. Different from FIG. 4a, the waiting base station 2 described in FIG. 4b allocates resources for transmitting the first voice data packet by using a first resource allocation indication message; after receiving the first resource request message from the user equipment 1, the base station 2 receives the first resource request message. Allocating a new resource for the session, and sending a first resource allocation response message to the user equipment 1 via the common signaling channel, where the first resource allocation response message includes the user equipment 1 allocated New resources for the conversation period,

Second, the user equipment 1 receives the first resource allocation response message sent by the base station 2 via the common signaling channel, and sends the voice data packet to the base station 2 through the resource allocated for the conversation period by the first resource allocation response message, until When it is detected that the data packet to be transmitted is converted from the voice data packet to the silent data packet, the process returns to step S11 in FIG. 3.

Figure 5 is a flow chart showing a method for controlling packet transmission during talk session and silent period handover of voice communication in a base station of an IP protocol based wireless communication network in accordance with another embodiment of the present invention.

In this embodiment, step S21 is first performed to release resources occupied by the user equipment during the conversation period;

Next, in step S22, before the next silent data packet arrives, the third resource allocation indication message is sent to the user equipment via the common signaling channel;

Then, step S23 is performed to detect the received data packet from the user equipment to determine whether it is converted from a silent data packet to a voice data packet;

If it is detected that the received data packet from the user equipment is not converted from the silent data packet to the voice data packet, returning to step S22 and the following steps;

If it is detected that the received data packet from the user equipment is changed from the silent data packet to the voice data packet, step S24 is first performed, and the user equipment is allocated resources for the conversation period for transmitting the voice data packet;

Then, step S25 is performed to detect the received data packet from the user equipment to determine whether it is converted from a voice data packet to a silent data packet; If it is detected that the received data packet from the user equipment is changed from the voice data packet to the silent data packet, the process returns to step S21 and the following steps.

It should be understood by those skilled in the art that in a specific application, the above steps S21-S25 are repeated loop execution.

Specifically, the base station 2 receives the data packet sent by the user equipment 1 and detects the data packet to determine the type of the currently received data packet (a voice data packet or a silent data packet), thereby determining the current user equipment 1 The state of the conversation (talk period or silent period). More specifically, the base station 2 detects the received data packet from the user equipment 1 at the PDCP sublayer, and receives the received data packet from the user equipment 1 through a detection module 2 designed in advance in the PDCP sublayer. A test is performed to determine the type of the packet. The detection module 2 can be located in the robust head decompression module 2 (ROHC 2) in the PDCP sublayer or on the robust head decompression module 2 (ROHC 2). It should be understood by those skilled in the art that the step of detecting the received data packet from the user equipment 1 may occur after header decompression of the received packet header from the user equipment 1 Do not repeat them. Because only the robust header decompression module 2 (ROHC 2) decompresses the header of the received packet from the user equipment 1 to recover the original data packet, so that the detection module 2 can accurately detect the received data. The type of packet of user device 1.

Further, detecting the received data packet from the user equipment 1 may include detecting the identification bit of the data packet, and may also include detecting the size of the payload of the data packet. Those skilled in the art should understand The detection of the received data packet from the user equipment 1 may also include other forms of detection, as long as the type of the received data packet from the user equipment 1 can be accurately determined by the detection method (voice data packet or silence). The data packet can be, and will not be described here.

Further, after the detection module 2 located in the base station 2 receives the data packet from the user equipment 1, the relevant identification bits in the data packet are analyzed to determine the type of the data packet. Specifically, in the case where the format of the data packet is defined by the RPC3389 standard, the detecting module 2 in the base station 2 determines the type of the data packet by detecting the RTP payload type bit in the RTP header of the data packet from the user equipment 1. For data packets In the case where the format is defined by the RFC3267 standard, the detection module 2 in the base station 2 determines the type of the data packet by detecting the field type bit in the AMR payload of the data packet from the user equipment 1.

It should be understood by those skilled in the art that the detection of the received data packet from the user equipment 1 may further include detecting other related identification bits included in the data packet, as long as the identifier is detected. The type of the data packet is optional and will not be described here.

After receiving the data packet from the user equipment 1, the base station 2 first demultiplexes the data packet received from the user equipment 1 in the MAC sublayer; secondly, in the RLC sublayer, the solution in the MAC sublayer The multiplexed data packet is reassembled, and then the data packet reconstructed in the RLC sublayer is decrypted in the PDCP sublayer, and then the decrypted data packet is decompressed by the packet header; finally, located in the PDCP sub The detection module 2 in the layer detects the header decompressed data packet.

After the detecting module 2 detects the received data packet from the user equipment 1 to determine the type of the data packet, the PDCP sublayer informs the resource allocation scheduling module 2 (Scheduler 2) located in the MAC sublayer by the internal primitive. The type of data packet detected by the detection module 2.

Specifically, after the detecting module 2 in the base station 2 detects the first silent data packet (a data packet before the silent data packet is a voice data packet), the base station 2 first releases the previously allocated content for the user equipment 1. The resource in the conversation period starts to be timed. Secondly, when the silent period (160ms) expires, the base station 2 sends a third resource allocation indication message to the user equipment 1 via the common signaling channel (wherein the third resource allocation indication message is The first resource allocation indication message mentioned in FIG. 3 is the same resource allocation indication message, and the third resource allocation indication message includes the resource allocated for the user equipment 1 to transmit the next data packet. It should be understood by those skilled in the art that the base station 2 can also send the third resource allocation indication message to the user equipment 1 via the common signaling channel before the expiration of the silent period (160 ms), as long as the base station 2 can allocate the user equipment 1 to it. The resource that can be used to transmit the next data packet when the silent period arrives is not mentioned here.

The base station 2 detects the received data packet from the user equipment 1 every time, To determine the type of data packet currently received from user equipment 1. If the received data packet from the user equipment 1 is still a silent data packet, the base station 2 sends a third resource allocation indication message to the user equipment 1 via the common signaling channel before the next silent data packet arrives; The received data packet from the user equipment 1 is converted from the silent data packet to the voice data packet, and the base station 2 allocates resources for the conversation period for the user equipment 1 to transmit the voice data packet. This step is the same as the step in FIG. S24 corresponds.

Specifically, in different embodiments, the step S24 may have different implementations. Various specific embodiments of step S24 are described below with reference to FIG. 5 in conjunction with FIGS. 6a, 6b, and 6c. '

Figure 6a shows a specific embodiment of the step S24 of Figure 5, which is a flow chart of a method for allocating resources for a talk period for the user equipment.

In this embodiment, step S241 is performed to reserve, for the user equipment, resources allocated by the latest third resource allocation indication message sent via the public signaling channel, for transmission of the voice data packet in the subsequent session.

Specifically, after the base station 2 detects that the received data packet transmitted by the user equipment 1 via the latest third resource allocation indication message is changed from the silent data packet to the first voice data packet, the user equipment is 1 Retaining the resource allocated by the latest third resource allocation indication message, where the latest third resource allocation indication message includes the resource allocated to the base station 2 for transmitting the next silent data packet to the user equipment 1.

Figure 6b shows another embodiment of the step S24 of Figure 5, which is a flow diagram of a method for the user equipment to allocate resources for the talk period.

In this embodiment, step S241 is first performed, and the user equipment is allocated a new resource for the conversation period;

Next, in step S242, a fourth resource allocation indication message is sent to the user equipment, where the fourth resource allocation indication message includes indication information for indicating a new resource for the conversation period.

Specifically, after the base station 2 detects that the received data packet from the user equipment 1 is changed from the silent data packet to the first voice data packet, first, the user equipment 1 is allocated a new resource for the conversation period, and secondly, Sending a fourth resource allocation indication message to the user equipment 1 (wherein the fourth resource allocation indication message is the same resource allocation indication message as the second resource allocation indication message mentioned in FIG. 4b), where the fourth resource allocation indication message includes a new indication for the conversation period. Information about the resource. The user equipment 1 receives the fourth resource allocation indication message from the base station 2, extracts the resource allocated by the base station 2 to the user equipment 1, and uses the resource as the resource of the conversation period, and uses the resource to send the subsequent voice data packet. To base station 2.

Figure 6c shows a further embodiment of the step S24 of Figure 5, which is a flow diagram of a method for the user equipment to allocate resources for the talk period.

In this embodiment, step S241" is first performed, and receiving a second resource request message sent by the user equipment via a common signaling channel;

Secondly, step S242" is performed, and the user equipment is allocated a new resource for the conversation period;

Finally, step S243" is performed to send a second resource allocation response message to the user equipment, where the second resource allocation response message includes indication information for indicating resources allocated to the user equipment for the conversation period.

Specifically, when the user equipment 1 detects that the data packet to be transmitted is converted from the silent data packet to the voice data packet, immediately sends the second resource request message to the base station 2 via the common channel (the second resource request message is mentioned in FIG. 4c And the first resource request message is the same resource request message; the base station 2 first receives the second resource request message sent by the user equipment 1 via the common signaling channel, where the second resource request message is used to request the user from the base station 2 The device 1 is used for the resources of the subsequent conversation period; secondly, after receiving the second resource request message from the user equipment 1, the base station 2 allocates a new resource for the conversation period for the user equipment 1; subsequently, the base station 2 transmits the second a resource allocation response message to the user equipment 1 (wherein the second resource allocation response message is the same resource allocation response message as the first resource allocation response message mentioned in FIG. 4c:), the second resource allocation response message includes The indication information indicating the resource for the conversation period allocated to the user equipment 1 is indicated.

FIG. 7 illustrates a handover assist control apparatus for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a user equipment of an IP protocol-based wireless communication network according to an embodiment of the present invention. Schematic. Switching aid The assist control device 1 includes a first transmitting device 11, a first receiving device 12, a second transmitting device 13, and a third transmitting device 14.

In this embodiment, the first sending device 11 is configured to send the first silent data packet to the base station via the resource occupied by the conversation period;

Next, the judging device 10 (not shown in FIG. 7 for simplicity) is configured to detect a data packet to be subsequently sent to determine whether it is converted from a silent data packet to a voice data packet;

If the detected data packet to be transmitted is not converted by the silent data packet to the voice data packet, the first receiving device 12 is configured to receive a first resource allocation indication message sent by the common base station via the common signaling channel;

The second sending device 13 is configured to send the next silent data packet to the base station by using the resource allocated by the first resource allocation indication message;

Then, the judging device 10 (for simplicity, not shown in the figure) continues to detect the next data packet to be transmitted to determine whether it is converted from the silent data packet to the voice data packet;

If the detected data packet to be transmitted is changed from the silent data packet to the voice data packet, the third transmitting device 14 is configured to send the voice data packet to the base station by using the resource allocated for the session during the base station;

Then, the judging device 10 (not shown in FIG. 7 for simplicity) is further configured to detect a data packet to be transmitted to determine whether it is converted from a voice packet to a silent packet; if the detected packet to be transmitted is detected If the voice data packet is not converted to the silent data packet, the user equipment continues to send the subsequent voice data packet to the base station by using the resource allocated by the base station for the conversation period;

If the detected data packet to be transmitted is converted from a voice data packet to a silent data packet, the user equipment transmits the first silent data packet to the base station via resources occupied by the conversation period.

Specifically, the detecting module 1 in the user equipment 1 first detects the data packet generated by the user equipment 1 to determine the type of the data packet (voice data packet or silent data packet) that is currently generated, thereby determining the current state ( Talk period or silent period). More specifically, The detecting module 1 in the user equipment 1 detects the data packet generated by the detecting module 1 in the PDCP sublayer, and detects the generated data packet by using a detecting module 1 designed in advance in the PDCP sublayer to determine the data packet. Types of. The detection module 1 may be located in the robust head compression module 1 (ROHC 1 ) in the PDCP sublayer or on the robust head compression module 1 (ROHC 1 ). It should be understood by those skilled in the art that the detection of the data packet generated by the user equipment 1 may be performed before the header compression of the data packet generated by the user equipment 1 is performed, and details are not described herein. Because the header compression of the packet generated by the user equipment 1 once the robust header compression module 1 (ROHC 1 ) is header compressed, the size of the data packet is changed, so that the data packet generated by the user equipment 1 cannot be accurately detected. Type (voice packet or silent packet).

Further, after the detecting module 1 receives the data packet generated by the user equipment 1, the relevant identification bits in the data packet are analyzed to determine the type of the data packet. Specifically, in the case where the format of the packet is defined by the RJFC3389 standard, the detecting module 1 in the user device 1 determines the type of the packet by detecting the RTP payload type bit in the RTP header of the packet from the upper layer. In the case where the format of the data packet is defined by the RFC3267 standard, the detection module 1 in the user equipment 1 should be understood by those skilled in the art from the upper layer, and the user equipment ι

The measurement may also include detecting other related identifiers included in the data packet, and the type of the data packet may be determined by detecting the identifier, which is not described herein.

In the PDCP sublayer, after the detection module 1 detects the data packet generated by the user equipment 1 to determine the type of the data packet, the PDCP sublayer informs the location through the internal primitive. State synchronizer 1 in the MAC sublayer The type of packet detected by the detection module 1. At the same time, the robust header compression module 1 (ROHC 1 ) in the PDCP sublayer performs header compression on the data packet, and then the encryption module 1 (Security 1 ) encrypts the header compressed data packet; In the RLC sublayer, the segmentation module 1 segments the encrypted data packet from the PDCP sublayer; in the MAC sublayer, the multiplexing module 1 multiplexes the segmented data packets from the RLC sublayer; Finally, the user equipment 1 transmits the data packet subjected to the above processing to the base station 2.

Specifically, after the detecting module 1 in the user equipment 1 detects the first silent data packet (a data packet before the silent data packet is a voice data packet), first, the first transmitting device in the auxiliary control device 1 is switched. 11 transmitting the first silent data packet to the base station 2 via its resources occupied during the conversation period, and after receiving and detecting the first silent data packet from the user equipment 1, the base station 2 releases the previous user equipment 1 The resources allocated for the conversation period are started and timed. It should be understood by those skilled in the art that after the user device 1 knows that it successfully sent the first silent data packet to the base station 2, it can also release its own during the conversation period. The resources used. Further, after the base station 2 has released the resources for the talk period that it previously allocated for the user equipment 1, the resources may be allocated to other user equipments for use. When the quiet period (160ms) expires, the base station 2 sends a first resource allocation indication message to the user equipment 1 via the common signaling channel, where the first resource allocation indication message includes the allocation of the next data packet for the user equipment 1 to be allocated. Resources. It should be understood by those skilled in the art that the base station 2 may also send the first resource allocation indication message to the user equipment 1 via the common signaling channel before the expiration of the silent period (160 ms), as long as the base station 2 can allocate the user equipment 1 to be silent. The resource that can be used to transmit the next data packet when the cycle arrives is not mentioned here.

Next, the first receiving device 12 in the handover assisting control device 1 receives the first resource allocation indication message sent by the base station 2 via the common signaling channel, where the first resource allocation indication message is included and transmitted for the user equipment 1 The resource allocated by a packet. Then, the second transmitting device 13 in the handover assisting control device 1 transmits the next silent data packet to the base station 2 according to the resource allocated by the first resource allocation indication message.

The detection module 1 in the user equipment 1 is to be sent each time before sending a data packet. The packet is tested to determine the type of packet it is currently generating. If the detected data packet to be transmitted is still a silent data packet, the second transmitting device 13 in the handover assisting control device 1 transmits the silent data packet through the resource allocated by the received first resource allocation indication message from the base station 2. If the detected data packet to be transmitted is converted from the silent data packet to the voice data packet, the third transmitting device 14 in the handover assisting control device 1 transmits the voice data packet to the base station through the resource allocated for the talk period allocated by the base station 2. 2.

In particular, in a different embodiment, the third transmitting device 14 can have different implementations. Various embodiments of the third transmitting device 14 are described below with reference to FIG. 7 in conjunction with FIGS. 8a, 8b, and 8c.

FIG. 8a shows a specific embodiment of the third transmitting device 14 of FIG. 7 for transmitting a voice data packet to a third transmitting device 14 of the base station by a resource allocated for a talk period allocated by a base station. Schematic. The third transmitting device 14 includes a fourth transmitting device 141.

In this embodiment, the fourth sending device 141 in the third sending device 14 is configured to send a voice for the resource allocated for the conversation period by the latest first resource allocation indication message received by the first receiving device 12. The packet is sent to the base station.

Specifically, when the detecting module 1 in the user equipment 1 detects that the data packet to be transmitted is changed from the silent data packet to the first voice data packet, the first receiving device 12 in the handover assisting control device 1 continues to wait for receiving from the base station 2 a first resource allocation indication message sent by using a common signaling channel, where the first resource allocation indication message includes a resource allocated to the base station 2 for transmitting the next silent data packet to the user equipment 1, but the next data packet is not The silent packet is the first voice packet. When the extracting means in the user equipment 1 (not shown in FIG. 7 for clarity) extracts the resource originally used for transmitting the next silent data packet from the first resource allocation indication message, the resource is used as the resource The resource of the conversation period, then, the fourth transmitting device 141 uses the resource to send the subsequent voice data packet to the base station 2 until the detecting module 1 in the user equipment 1 detects that the data packet to be transmitted is changed from the voice data packet to the silent data packet. .

Figure 8b shows another embodiment of the third transmitting device 14 of Figure 7, that is, for transmitting a voice packet to a resource allocated for a talk period by a base station to the A schematic diagram of the structure of the third transmitting device 14 of the base station. The third transmitting device 14 includes a fifth transmitting device 14A, a second receiving device 142, and a sixth transmitting device 143. The third transmitting device 14 in FIG. 8b has the same function as the third transmitting device 14 in FIG. 8a.

In this embodiment, the fifth transmitting device 14 is configured to send the first voice data packet to the base station by using the resource allocated by the latest first resource allocation indication message received by the first receiving device 12;

Next, the second receiving device 142 is configured to receive a new second resource allocation indication sent by the base station via the common signaling channel;

Finally, the sixth transmitting means 143 is configured to send the subsequent voice data packet to the base station by using the new resource allocated for the conversation period by the new second resource allocation indication message.

Specifically, when the detecting module 1 in the user equipment 1 detects that the data packet to be transmitted is changed from the silent data packet to the first voice data packet, the first receiving device 12 in the handover assisting control device 1 continues to wait for receiving from the base station 2 a first resource allocation indication message sent via a common signaling channel, where the first resource allocation indication message includes a resource allocated to the base station 2 for transmitting the next silent data packet to the user equipment 1, but the next data packet is not The silent packet is the first voice packet. When the extracting means in the user equipment 1 (not shown in FIG. 7 for simplicity) extracts the resource originally used for transmitting the next silent data packet from the first resource allocation indication message, the fifth transmitting means 141, The first voice data packet is sent to the base station 2 using the resource.

When the fifth transmitting device 141 transmits the first voice data packet to the base station 2 (equivalent to transmitting a resource request message to the base station 2) by using the resource allocated by the latest first resource allocation indication message; the base station 2 receives and detects Go to the first voice data packet from the user equipment 1 (equivalent to a resource request message), then allocate a new resource for the talk period for the user equipment 1, and send a second resource allocation indication message to the user equipment 1, The second resource allocation indication message includes a new resource allocated for the user equipment 1 for the conversation period; after the base station 2 sends the second resource allocation indication message to the user equipment 1, the second receiving device 142 first receives a new second resource allocation indication message sent from the base station 2 via the common signaling channel, and then the sixth transmitting means 143, utilizing the second resource The resource for the talk period allocated by the indication message transmits the subsequent voice data packet to the base station 2 until the detection module in the user equipment 1 detects that the data packet to be transmitted is converted from the voice data packet to the silent data packet.

Figure 8c shows still another embodiment of the third transmitting device 14 of Figure 7, that is, a third transmitting device 14 for transmitting voice data packets to the base station by resources allocated for the talk period by the base station Schematic diagram of the structure. The third transmitting device 14" includes a seventh transmitting device 141", a third receiving device 142, and an eighth transmitting device 143". wherein the third transmitting device 14" in FIG. 8c and the third transmitting device in FIG. 8a The device 14 and the third transmitting device 14 in Fig. 8b have the same function.

In this embodiment, the seventh transmitting device 141" is configured to send the first resource request message to the base station via the common signaling channel;

The third receiving device 142" is configured to receive a first resource allocation response message sent by the base station via the common signaling channel;

Finally, the eighth transmitting device 143" is configured to send a voice data packet to the base station by using the resource allocated for the talk period by the first resource allocation response message.

Specifically, when the detecting module 1 in the user equipment 1 detects that the data packet to be transmitted is converted from the silent data packet to the first voice data packet, the seventh transmitting device 141 in the user equipment 1 immediately transmits the common signaling. The channel sends a first resource request message to the base station 2, which is different from the waiting base station 2 described in FIG. 8b by using the first resource allocation indication message to allocate resources for transmitting the first voice data packet; After the first resource request message from the user equipment 1, the user is allocated a new resource for the talk period, and the first resource allocation response message is sent to the user equipment 1 via the common signaling channel, where the first resource The allocation response message includes a new resource for the talk period allocated for the user equipment 1; after the base station 2 sends the first resource allocation response message to the user equipment 1, the third receiving device 142 in the user equipment 1 first receives a first resource allocation response message sent from the base station 2 via the common signaling channel, and then the eighth transmitting means 143" is allocated by the first resource allocation response message The resource in the conversation period sends a voice data packet to the base station 2 until the detection module 1 detects that the data packet to be transmitted is converted from the voice data packet to the silent data packet. FIG. 9 illustrates a handover assist control apparatus for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a base station of a wireless communication network based on an IP protocol according to another embodiment of the present invention. Schematic. The handover assist control device 2 includes a resource release device 21, a ninth transmission device 22, and a first resource allocation device 23.

In this embodiment, the resource release device 21 is configured to release resources occupied by the user equipment during the conversation period;

Next, the ninth sending device 22 is configured to send a third resource allocation indication message to the user equipment via the public signaling channel before the next silent data packet arrives;

The determining device 20 (not shown in Figure 9 for simplicity) is configured to detect the received data packet from the user equipment to determine whether it is transitioned from a silent data packet to a voice data packet;

If it is detected that the received data packet from the user equipment is not converted by the silent data packet to the voice data packet, the ninth sending device 22 is configured to send the third resource via the common signaling channel before the next silent data packet arrives. Assigning an indication message to the user equipment;

If it is detected that the received data packet from the user equipment is changed from a silent data packet to a voice data packet, first the first resource allocation device 23 is configured to allocate resources for the user equipment for the conversation period for transmission. Voice data packet

The determining device 20 (not shown in FIG. 9 for simplicity) is configured to detect the received data packet from the user equipment to determine whether it is transitioned from a voice data packet to a silent data packet;

If it is detected that the received data packet from the user equipment is changed from a voice data packet to a silent data packet, the resource release device 21 is configured to release resources occupied by the user equipment during the conversation period.

Specifically, the base station 2 receives the data packet sent by the user equipment 1 and detects the data packet to determine the type of the currently received data packet (a voice data packet or a silent data packet), thereby determining the current user equipment 1 The state of the conversation (talk period or silent period). More specifically, the base station 2 detects the received data packet from the user equipment 1 At the PDCP sublayer, the received data packet from the user equipment 1 is detected by a detection module 2 designed in advance in the PDCP sublayer to determine the type of the data packet. The detection module 2 may be located in the robust head decompression module 2 (ROHC 2 ) in the PDCP sublayer or on the robust head decompression module 2 (ROHC 2 ). It should be understood by those skilled in the art that the detection of the received data packet from the user equipment 1 may occur after the header decompression of the received data packet from the user equipment 1 is performed, and details are not described herein. Because only the robust header decompression module 2 (ROHC 2) decompresses the header of the received packet from the user equipment 1 to recover the original data packet, so that the detection module 2 can accurately detect the received data from The type of packet of user device 1.

Further, detecting the received data packet from the user equipment 1 may include detecting the identification bit of the data packet, and may also detecting the size of the payload of the data packet. It should be understood by those skilled in the art that the detection of the received data packet from the user equipment 1 may also include other forms of detection, as long as the received data packet from the user equipment 1 can be accurately determined by the detection method. Type (voice packet or silent packet) can be omitted here.

Further, after the detecting module 2 located in the base station 2 receives the data packet from the user equipment 1, the relevant identification bits in the data packet are analyzed to determine the type of the data packet. Specifically, in the case where the format of the data packet is defined by the RFC3389 standard, the detecting module 2 in the base station 2 determines the type of the data packet by detecting the RTP payload type bit in the RTP header of the data packet from the user equipment 1. In the case where the format of the packet is defined by the RFC3267 standard, the detecting module 1 in the base station 2 determines the type of the packet by detecting the field type bit in the AMR payload of the packet from the user device 1.

After the base station 2 receives the data packet from the user equipment 1, first at the MAC sublayer The demultiplexing module 2 demultiplexes the data packet received from the user equipment 1; secondly, in the RLC sublayer, the reassembly module 2 reassembles the data packet demultiplexed in the MAC sublayer, and then In the PDCP sublayer, the decryption module 2 (security 2) decrypts the reassembled data packet in the RLC sublayer, and then the robust header decompression module 2 (ROHC 2) performs packet header decompression on the decrypted data packet. Finally, the detection module 2 located in the PDCP sublayer detects the header decompressed data packet.

Specifically, when the detecting module 2 in the base station 2 detects the first silent data packet (a data packet before the silent data packet is a voice data packet), the resource releasing device 21 in the switching assist control device 2 releases its previous The resource allocated for the user equipment 1 for the talk period and starting timing, when the silent period (160 ms) expires, the ninth transmitting device 22 in the handover assisting control device 2 transmits the third resource allocation indication via the common signaling channel. a message to the user equipment 1 (wherein the third resource allocation indication message is the same resource allocation indication message as the first resource allocation indication message mentioned in FIG. 7), where the third resource allocation indication message is included as the user equipment 1 Transfer the resources allocated by the next packet. It should be understood by those skilled in the art that the ninth transmitting device 22 in the handover assisting control device 2 may also send the third resource allocation indication message to the user equipment 1 via the common signaling channel before the expiration of the silent period (160 ms), as long as The first resource allocation device 23 in the handover assisting control device 2 can allocate the resources for transmitting the next data packet that can be used by the user equipment 1 when the silent period is reached, and details are not described herein.

The detection module 2 in the base station 2 detects the received data packet from the user equipment 1 each time to determine the type of data packet currently received from the user equipment 1. If the received data packet from the user equipment 1 is still a silent data packet, the ninth transmitting device 22 in the handover assisting control device 2 transmits the third resource allocation via the common signaling channel before the next silent data packet arrives. Instructing the message to the user equipment 1; if the received packet from the user equipment 1 is detected to be converted from the silent data packet to the voice data In the packet, the first resource allocation device 23 in the handover assist control device 2 allocates resources for the talk period for the user equipment 1 for transmitting voice data packets.

Specifically, in different embodiments, the first resource allocation device 23 can have different implementations. Various embodiments of the first resource allocation device 23 are described below with reference to FIG. 9 in conjunction with FIGS. 10a, 10b, and 10c.

Figure 10a shows a specific implementation of the first resource allocation means 23 of Figure 9, namely a schematic diagram of a first resource allocation means 23 for allocating resources for a talk period for a user equipment. The first resource allocation device 23 includes a resource reservation device 231.

In this embodiment, the resource reservation device 231 is configured to reserve, for the user equipment, the resource allocated by the latest third resource allocation indication message sent by the ninth sending device 22, for the voice data packet in the subsequent session. transmission.

Specifically, when the detecting module 2 in the base station 2 detects the received third resource allocation indication from the user equipment 1, the data packet transmitted by the allocated resource is changed from the silent data packet to the first voice. After the data packet, the resource reservation device 231 reserves, for the user equipment 1, the resource allocated by the latest third resource allocation indication message, where the latest third resource allocation indication message includes transmitting the next silence data packet to the user equipment 1 to the base station. 2 allocated resources.

Figure 10b shows another embodiment of the first resource allocation means 23 of Figure 9, namely a schematic diagram of a first resource allocation means 23 for allocating resources for a talk period for the user equipment 1. The first resource allocating device 23 includes a second resource allocating device 231 and a tenth transmitting device 232. The first resource allocating device 23 in Fig. 10b has the same function as the first resource allocating device 23 in Fig. 10a.

In this embodiment, the second resource allocating device 23 用于 is configured to allocate a new resource for the user equipment for the conversation period;

Next, the tenth sending device 232 is configured to send a fourth resource allocation indication message to the user equipment, where the fourth resource allocation indication message includes indication information for indicating a new resource for the conversation period.

Specifically, after the detecting module 2 in the base station 2 detects that the received data packet from the user equipment 1 is changed from the silent data packet to the first voice data packet, the second resource is first. The allocating means 231 allocates a new resource for the conversation period for the user equipment 1, and then the tenth transmitting means 232 sends a fourth resource allocation indication message to the user equipment 1 (wherein the fourth resource allocation indication message is in FIG. 8b The second resource allocation indication message mentioned is the same resource allocation indication message, and the fourth resource allocation indication message includes indication information for indicating a new resource for the conversation period. The second receiving device 142 in the user equipment 1 first receives the fourth resource allocation indication message from the base station 2, and then the extracting device in the user equipment 1 extracts the base station 2 to allocate to the user equipment 1 from the fourth resource allocation indication message. After the resource is used, the resource is used as a resource for the conversation period, and the subsequent voice data packet is transmitted to the base station 2 by using the resource.

Figure 10c shows a further embodiment of the first resource allocation device 23 of Figure 9, namely a schematic diagram of a first resource allocation device 23 for allocating resources for a talk period for the user equipment. The first resource allocating device 23" includes a fourth receiving device 231", a third resource allocating device 232" and an eleventh transmitting device 233". The first resource allocating device 23 in Fig. 10c has the same function as the first resource allocating device 23 in Fig. 10b and the first resource allocating device 23 in Fig. 10a.

In this embodiment, the fourth receiving device 231" is configured to receive a second resource request message sent by the user equipment via the common signaling channel;

Next, a third resource allocation device 232" is configured to allocate a new resource for the user equipment for the conversation period;

The last eleventh transmitting device 233" is configured to send a second resource allocation response message to the user equipment, where the second resource allocation response message includes indication information for indicating resources allocated to the user equipment for the session.

Specifically, after the detecting module 1 in the user equipment 1 detects that the data packet to be transmitted is converted from the silent data packet to the voice datagram, the seventh sending device 141 in the user equipment 1 immediately transmits the second resource request message via the common channel. (wherein the second resource request message is the same resource request message as the first resource request message mentioned in FIG. 8c) to the base station 2; the fourth receiving device 231 in the base station 2 receives the user equipment 1 via the common signaling a second resource request message sent by the channel, where the second resource request message is used to request the user equipment 1 for the resource of the subsequent conversation period; the fourth receiving device in the base station 2 231" after receiving the second resource request message from the user equipment 1, first the third resource allocating means 232" allocates a new resource for the talk period for the user equipment 1; subsequently, the eleventh transmitting apparatus in the base station 2 233: Send a second resource allocation response message to the user equipment 1 (where the second resource allocation response message is the same resource allocation response message as the first resource allocation response message mentioned in FIG. 8c), where the The two resource allocation response message includes indication information indicating a resource for the conversation period allocated to the user equipment 1.

The present invention has been described with respect to the specific embodiments thereof, and it is understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications and changes within the scope of the appended claims.

Claims

Claim

A method for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a user equipment of a wireless communication network based on an IP protocol, wherein the method comprises the following steps:

a. when detecting that the to-be-sent data packet is converted from the voice data packet to the first silent data packet, sending the first silent data packet to the base station via the resource occupied by the conversation period;

b. receiving a first resource allocation indication message sent by the base station via a common signaling channel;

Passing, by the resource allocated by the first resource allocation indication message, the next silent data packet to the base station,

Repeat steps b and c above until it is detected that the packet to be transmitted is changed from a silent packet to a voice packet.

2. The method according to claim 1, further comprising the steps of: A. when detecting that the data packet to be transmitted is converted from the silent data packet to the first voice data packet, allocated by the base station for The resources of the conversation period send voice data packets to the base station until it is detected that the data packets to be transmitted are converted from voice data packets to silent data packets.

The method according to claim 2, wherein the step A further comprises: when detecting that the data packet to be sent is converted from the silent data packet to the first voice data packet, by the step b The resource for the talk period allocated by the latest first resource allocation indication message received in the message sends a voice data packet to the base station until it is detected that the data packet to be transmitted is converted from the voice data packet to the silent data packet.

The method according to claim 2, wherein the step A further comprises the following steps:

- when it is detected that the data packet to be transmitted is converted from the silent data packet to the first voice data packet, the first one is transmitted by the resource allocated by the latest first resource allocation indication message received in the step b Voice data packets to the base station;

Receiving a new second asset transmitted from the base station via the common signaling channel Source allocation indication message;

Transmitting a subsequent voice data packet to the base station by the new resource allocated for the talk period by the new second resource allocation indication message until it is detected that the data packet to be transmitted is changed from the voice data packet to the silence data package.

- transmitting a first resource request message to the base station via the common signaling channel when it is detected that the data packet to be transmitted is converted from the silent data packet to the first voice data packet;

Receiving, by the base station, a first resource allocation response message transmitted via the common signaling channel;

- transmitting a voice data packet to the base station by the resource for the talk period allocated by the first resource allocation response message until it is detected that the data packet to be transmitted is converted from the voice data packet to the silent data packet.

A method for controlling data packet transmission during a talk period and a silent period handover of a voice communication in a base station of a wireless communication network based on an IP protocol, wherein the method comprises the following steps:

i. releasing the resource occupied by the user equipment during the conversation period when it is detected that the received data packet from the user equipment is changed from the voice data packet to the first silent data packet;

Ii. sending a third resource allocation indication message to the user equipment via a common signaling channel before the next silent data packet arrives;

The above step ii is repeated until it is detected that the received data packet from the user equipment is converted from a silent data packet to a voice data packet.

7. The method according to claim 6, comprising the steps of:

I. When it is detected that the received data packet from the user equipment is changed from the silent data packet to the first voice data packet, the user equipment is allocated resources for the conversation period for transmitting the voice data packet.

The method according to claim 7, wherein the step I further comprises the following steps: - when it is detected that the received data packet from the user equipment is changed from the silent data packet to the first voice data packet, retaining the latest third resource allocation indication message sent in the step ii for the user equipment The allocated resources are used for the transmission of voice packets in subsequent sessions.

9. The method according to claim 7, wherein the step I further comprises the following steps:

- assigning a new resource for the talk period to the user equipment when it is detected that the received data packet from the user equipment is converted from the silent data packet to the first voice data packet;

- transmitting a fourth resource allocation indication message to the user equipment, the fourth resource allocation indication message containing indication information indicating the new resource for the conversation period.

10. The method according to claim 7, wherein the step I further comprises the following steps:

Receiving a second resource request blank sent by the user equipment via a common signaling channel

- allocating a new resource for the talk period for the user equipment;

- transmitting a second resource allocation response message to the user equipment, the second resource allocation response message containing indication information indicating a resource for the conversation period allocated to the user equipment.

A handover assist control apparatus for controlling data packet transmission during a talk period and a silent period of a voice communication in a user equipment of a wireless communication network based on an IP protocol, wherein the handover assist control apparatus comprises:

a first sending device, configured to: when detecting that the to-be-sent data packet is converted from the voice data packet to the first quiet data packet, send the first static data packet to the base station by using resources occupied by the session;

a first receiving device, configured to receive a first resource allocation indication message sent by the base station via a common signaling channel;

a second sending device, configured to send, by using the resource allocated by the first resource allocation indication message, a next silent data packet to the base station,

Wherein the first receiving device is further configured to repeatedly receive the public from the base station a first resource allocation indication message sent by the signaling channel, and the second sending device is further configured to repeatedly send the next silent data packet to the base station by using the resource allocated by the received first resource allocation indication message, until the detection is detected. The data packet to be transmitted is converted from a silent data packet to a voice data packet.

The device according to claim 11, further comprising: a third sending device, configured to: when detecting that the data packet to be sent is converted from the silent data packet to the first voice data packet, allocated by the base station The resource for the talk period sends a voice data packet to the base station until it is detected that the data packet to be transmitted is converted from the voice data packet to the silent data packet.

The device according to claim 12, wherein the third transmitting device further comprises:

a fourth sending device, configured to: when detecting that the data packet to be sent is converted from the silent data packet to the first voice data packet, by using the latest first resource allocation indication message received by the first receiving device The resource in the conversation period sends a voice data packet to the base station until it detects that the data packet to be transmitted is converted from the voice data packet to the silent data packet.

a fifth sending device, configured to: when detecting that the data packet to be sent is converted from the silent data packet to the first voice data packet, the resource allocated by the latest first resource allocation indication message received by the first receiving device Transmitting the first voice data packet to the base station;

a second receiving device, configured to receive a new second resource allocation indication message sent by the base station via the common signaling channel;

a sixth sending device, configured to send a subsequent voice data packet to the base station by using a new resource allocated for the talk period by the new resource allocation indication message, until the data packet to be sent is detected by the voice The packet is converted to a silent packet.

a seventh sending device, configured to: when detecting that the data packet to be sent is changed by the silent data packet Up to a first voice data packet, sending a first resource request message to the base station via the common signaling channel;

a third receiving device, configured to receive, by the base station, a first resource allocation response message sent by using the common signaling channel;

And an eighth sending device, configured to send a voice data packet to the base station by using the resource allocated for the conversation period by the first resource allocation response message, until detecting that the data packet to be sent is changed from the voice data packet to the silence data package.

16. A handover assist control device for controlling data packet transmission during a talk period and a silent period of voice communication in a base station of a wireless communication network based on an IP protocol, wherein the handover assist control device comprises:

a resource release device, configured to: when detecting that the received data packet from the user equipment is converted from the voice data packet to the first silent data packet, release the resource occupied by the user equipment during the conversation period;

a ninth sending device, configured to repeatedly send a third resource allocation indication message to the user equipment via a common signaling channel before the next silent data packet arrives, until the received data packet from the user equipment is detected by the The silent packet is converted to a voice packet.

17. The device according to claim 16, comprising:

a first resource allocation device, configured to: when detecting that the received data packet from the user equipment is changed from a silent data packet to a first voice data packet, allocate, for the user equipment, a resource for a conversation period, to transmit the voice data pack.

The device according to claim 17, wherein the first resource allocation device further comprises:

a resource retention device, configured to: when detecting that the received data packet from the user equipment is changed from the silent data packet to the first voice data packet, retain the latest third content sent by the ninth sending device for the user equipment The resource allocation indicates the resources allocated for the talk period by the message for transmission of voice packets in subsequent talk periods.

The device according to claim 17, wherein the first resource allocation device further comprises: a second resource allocation device, configured to: when detecting that the received data packet from the user equipment is changed from the silent data packet to the first voice data packet, allocate the new resource for the conversation period to the user equipment;

And a tenth sending device, configured to send a fourth resource allocation indication message to the user equipment, where the fourth resource allocation indication message includes indication information for indicating the new resource for the conversation period.

a fourth receiving device, configured to receive a second resource request message sent by the user equipment via a common signaling channel;

a third resource allocation device, configured to allocate, to the user equipment, a new resource for a conversation period;

And an eleventh transmitting device, configured to send a second resource allocation response message to the user equipment, where the second resource allocation response message includes indication information for indicating a resource allocated to the user equipment for a session.