KR20090047943A - Apparatus and method for fast resource allocation in voip service - Google Patents

Abstract

The present invention relates to a voice packet service, in a method of allocating a resource of a base station for a voice packet service, in a method of allocating a resource of a base station for a voice packet service, Receiving at least one of information indicating the start of a voice packet service data generation section received from the terminal, and the scheduler indicates that information included in the voice packet received from the higher layer indicates the start of voice packet service data generation. When information included in the voice packet received from the terminal indicates the start of silence, reassigning downlink resources for voice packet service data and transmitting information about the reassigned downlink resources to the terminal; To include The voice packet service enables the user to know and predict the status of VoIP data generation section and silence generation section to maximize the capacity through efficient allocation of resources and satisfy the requirements of latency-sensitive VoIP service latency. There is an advantage to this.

 VOIP, AMR, RTP, TCP, UDP, IP.

Description

Apparatus and method for fast resource allocation in voice packet service {APPARATUS AND METHOD FOR FAST RESOURCE ALLOCATION IN VOIP SERVICE}

The present invention relates to a voice packet service (VoIP: Voice Over IP, hereinafter referred to as VoIP). The present invention relates to a VoIP data generation interval (Talkspurt Period) and a silence generation (SID: Silent Descriptor) interval in a mobile communication system in which packet scheduling is performed. The present invention relates to an apparatus and a method for enabling a more efficient resource allocation by allowing a base station scheduler to grasp and a base station predicting a VoIP data generation interval and a silence generation interval.

 Today's mobile communication systems are evolving from the initial voice-oriented services to high-speed, high-quality wireless data packet communication systems for providing data and multimedia services.

VoIP refers to voice data generated by a voice codec (IP) / Internet Protocol (UDP) / User Data Protocol (UDP) / Real-time Transport Protocol (hereinafter referred to as 'RTP'). Means a communication technique that creates and transmits packets.

In addition, the VoIP is a technology proposed to provide a voice service provided through a circuit switched network (PSTN) such as a public switched telephone network (PSTN) through a packet network such as an IP network.

In order to perform delay sensitive VoIP service through wireless data packet communication network, it is necessary to satisfy VoIP service requirement for delay.

However, scheduling a VoIP packet in which small data is frequently generated using a scheduling method for an existing packet service has a problem in that it may be impossible to cope due to an increase and a delay of control information informing of resource information. .

In addition, the increase of the control information indicates a decrease in resources for transmitting actual data and causes a decrease in total capacity. In the case of VoIP service, which frequently generates small size data, reducing the amount of control information increased in proportion to the user is essential to improve the quality of service. For this reason, in the case of VoIP service, a method for semi-permanent resource allocation has been discussed to reduce the amount of control information.

1 is a diagram illustrating a general VoIP packet generation cycle.

Referring to FIG. 1, voice data is discontinuously generated according to VoIP data generation periods (Talkspurt Period) 101 and 103 and Silent Descriptor (SID) generation period (silent period) 102. There is this. 1 illustrates an Adaptive Multi-Rate (AMR) codec as an example.

During the VoIP data generation intervals 101 and 103, voice data 104 and 106 are generated once every 20 ms, and seven bytes of data 105 representing silence are generated every 160 ms during the silence generation interval 102. .

If a fixed resource is allocated for the VoIP data generation intervals 101 and 103, there is a problem that waste of resources occurs in the silence generation interval 102 having a long period of eight times.

On the contrary, if resources are allocated for the silence generation section 102, resources for transmitting data in the VoIP data generation sections 101 and 103 are insufficient to satisfy a delay requirement, which is a requirement of a voice service. There is a problem that can not be.

VoIP packets are generated for each layer at each step. That is, a payload of voice data is generated in a codec, and then a header and a UDP checksum are added to the payload in the IP / UDP / RTP layer.

The VoIP packet processed in the IP / UDP / RTP layer may be delivered to a Radio Reource Control / Medium Access Control (RLC / MAC) layer without header compression or compression in the Packet Data Convergence Protocol (PDCP) layer.

There is a method using the size of the packet to distinguish the silence in the VOIP packet processed in the PDCP layer. However, the method using the packet size may not be applicable depending on the data rate in the codec.

AMR codec mode Payload Size (in byte) Total size in byte (for full header) Total size in byte (for compressed headers) AMR 4.75 kbit / s 14 79 17 to 29 AMR 5.15 kbit / s 15 80 18-30 AMR 5.90 kbit / s 16 81 19 to 31 AMR 6.70 kbit / s (PDC-EFR) 18 83 21 to 33 AMR 7.40 kbit / s (TDMA-EFR) 20 85 23 to 35 AMR 7.95 kbit / s 22 87 25 to 37 AMR 10.2 kbit / s 27 92 30 to 42 AMR 12.2 kbit / s (GSM-EFR) 32 97 35 to 47 AMR SID 7 72 10 to 22

<Table 1> shows the size of VoIP packet according to codec mode. The size of IP / UDP / RTP header is 40 bytes for full header and 60 bytes for IPv6. Compression reduces the size by 3 to 15 bytes.

Accordingly, it can be seen that the PDCP layer is silent when the payload size is 7 bytes using the payload size of the VoIP packet as shown in Table 1 above.

However, the VoIP packet received by the scheduler of the base station is a form in which IP / UDP / RTP header and voice data are combined. Therefore, when header compression is performed in the PDCP layer, separate payload size information may not be provided because data of AMR 4.75 kbit / s to AMR 6.70 kbit / s overlaps with AMR silence data (AMR SID). In this case, there is a problem in that the base station scheduler cannot distinguish only the size of the entire received packet. Therefore, since the base station scheduler cannot accurately distinguish between the VoIP data generation section and the silence generation section, there is a problem in that resources cannot be allocated according to the situation in which the section is changed.

In addition, when the silence occurrence interval cannot be predicted, as shown in FIG. 2, a problem occurs when allocating uplink resources.

2 is a diagram illustrating an existing musk link resource allocation process.

Referring to FIG. 2, in the step, when a small radio resource is allocated every 160ms in the silence generation interval 202 and the terminal is switched to the VoIP data generation interval (203), the chanyang link radio resource is still allocated every 160ms ( 204) There is a problem that the base station can know the VoIP data generation interval only after the next 160ms. This is a very large value considering that the end-to-end delay requirement of voice in the LTE system is within 200 ms.

In addition, if the corresponding item is to be transmitted to the terminal through a control message, the delay time due to the control message transmission can not be ignored. To this end, there is a need for an apparatus and method for predicting a time point for switching from a mute generation section to a VoIP data generation section and pre-allocating radio resources before the VoIP data generation section comes.

An object of the present invention is to provide an apparatus and method for fast resource allocation in a voice packet service.

Another object of the present invention is to be able to know and predict the status of the VoIP data generation section and the silence generation section in the voice packet service to maximize the capacity through efficient allocation of resources and at the same time to delay the latency sensitive VoIP service. The present invention provides an apparatus and a method for ensuring the requirements for the same.

According to a first aspect of the present invention for achieving the above object, in the resource allocation method of the base station for the voice packet service, a voice packet received from a higher layer or a voice packet received from a terminal or a voice packet received from a terminal by a scheduler Receiving at least one of the information indicating the start of the packet service data generation interval and the scheduler is the information contained in the voice packet received from the higher layer indicates the start of voice packet service data generation or received from the terminal When the information included in the packet indicates the start of silence, reassigning downlink resources for voice packet service data, and transmitting information on the reassigned downlink resources to the terminal. .

According to a second aspect of the present invention for achieving the above object, a method of providing a voice packet service state of a terminal and checking whether the size of the voice packet payload is equal to the size of the silent payload and When the size is the same as the silent payload size, the process of transmitting a sounding reference signal multiplied by the existing cell-divided sequence to the base station and when the size of the voice packet payload is not the same as the silent payload size, And transmitting a sounding reference signal multiplied by a cell division sequence to a sequence representing voice data generation to the base station.

The present invention enables to know and predict the status of the VoIP data generation section and the silence generation section in the voice packet service, thereby maximizing capacity through efficient allocation of resources, and at the same time, requirements for latency of a VoIP service sensitive to latency. There is an advantage that can be satisfied.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, the present invention will be described an apparatus and method for fast resource allocation in a voice packet service.

In the present invention, the PDCP layer of the transmitter of the base station and the terminal checks the size of the VOIP packet excluding the IP / UDP / RTP header and the UDP checksum to determine whether it is silent data or voice data. The scheduler of the present invention is basically described as operating in the PDCP layer.

In addition, a 1-bit silence indicator (SID ind) field information indicating silence data is added in front of the header, and a portion indicating the silence data and a silence indicator field of a VoIP packet received from a higher level or received from a terminal by the base station scheduler are allocated. It also uses the configuration to make changes to resources that have been made.

That is, in the present invention, the PDCP layer of the base station and the transmitter of the terminal determines the size of the VoIP packet, ie, the payload, excluding the IP / UDP / RTP header and the UDP checksum, and determines whether the data is the silent data or the voice data. Then, 1 bit of silence indicator (SID ind) field information indicating silence data is added to the head of the VoIP packet header to indicate whether silence data is present. In the case of a compressed VOIP packet, only a compression header (ROHC header) exists as a header.

In addition, the present invention the base station scheduler to predict the switching between the downlink / uplink VoIP data generation interval and the silent period, using the information of the reverse link, that is, uplink / downlink to reduce the radio resource allocation time Suggest a solution.

First, a description will be given of a terminal, a base station apparatus, and a method for informing a base station of a fact that a terminal is switched from a silent section to a VoIP data generation section through an uplink resource.

The terminal may inform the base station of the silence indicator (SID ind) by configuring a separate channel in the uplink to inform the sensed state transition information. For example, a scheduling request indicator (SRI) can be assigned to a VoIP user and used as a silent indicator (SID ind).

Alternatively, the terminal may display the state transition by using the existing LTE uplink channel to inform the sensed state transition information.

First, the UE periodically multiplies the " Sounding RS (Reference Signal) " transmitted by the UE, and initially allocates one additional sequence for each cell.

The terminal normally multiplies the existing cell division sequence and multiplies the allocated sequence at the moment of transition to the VoIP data generation interval and transmits the multiplication. The base station receives a general "Sounding RS" and detects the state transition and changes the resource allocation when a sequence multiplied by an additionally allocated sequence other than the general cell sequence is received.

Secondly, the UE is included in one of channel quality indicator (CQI) information periodically posted by the UE to inform the base station. The UE normally transmits the CQI value defined only at the moment when the existing CQI is transferred to the VoIP data generation interval. The base station normally receives the existing CQI and detects the state transition and changes the resource allocation when a defined CQI indicating the state transition is received in the VoIP data generation interval.

The base station scheduler of the present invention predicts the state transition between the downlink / uplink VoIP data generation interval / silence period, using the reverse link, that is, uplink / downlink information to reduce the radio resource allocation time It will be described below.

3A illustrates a principle of fast resource allocation in downlink according to an embodiment of the present invention.

Referring to FIG. 3A, the base station scheduler first checks whether the size of voice data corresponds to the size in a silence generation interval (SID) in a VoIP packet received from a higher layer. If the size of the voice data of the VoIP packet is the same as the size of the mute generation interval, it is indicated by '1' in the mute indicator field (SID ind field). If the size of the voice data of the VoIP packet is larger than the size of the silence occurrence interval, it is indicated by '0' in the silence indicator field. When the base station scheduler needs to compress the header of the VoIP packet, after the compression is performed, the silence indicator field 1 bit indicating the silence generation period is added to the beginning of the header.

Subsequently, the base station scheduler uses the mute indicator field in the downlink VoIP packet in case of input 1, the mute indicator field of the VoIP packet transmitted from the terminal through uplink in case of input 2, and uplink in case of input 3 Examine the information indicating whether or not to start the VoIP data generation section transmitted by the terminal.

The base station scheduler is. When the downlink resource is allocated to the silence generation interval, when the input 2 is the start of silence generation or when the input 1 is the start of the VoIP data generation, down from the two cases to fit the VoIP data generation period at the earliest Reallocates the link resource and notifies the terminal (3-1).

Thereafter, when no data indicating that the VoIP data generation section is received from the upper base station for a predetermined time, that is, when there is no data input for the input 1 indicating the VoIP data generation section, the downlink resource is added to the silence generation section. Set accordingly and notify the terminal.

This is a case in which the uplink is the start of a silent section or the downlink is the start of VoIP data generation, and in general, the case in which the counterpart starts to listen when the other party starts speaking. That is to say, in general, one person is talking at a time.

The mute indicator bit is additional information necessary for resource allocation in the base station scheduler and thus may be removed when mapping to the RLC / MAC / PHY.

3B is a state diagram illustrating a principle of fast resource allocation in downlink according to an embodiment of the present invention.

Referring to FIG. 3B, the base station scheduler may include: In the state where downlink resources are allocated according to the silence occurrence interval, when the upper base station starts to generate VoIP data, the downlink resources are reassigned to notify the terminal according to the VoIP data generation interval.

Thereafter, when data indicating that the VoIP data generation section is not received from the upper base station for a predetermined time, the downlink resource is set according to the silence generation section again.

Alternatively, the base station scheduler reassigns downlink resources according to the VoIP data generation interval and notifies the terminal when data transmitted from the terminal indicates the silence occurrence interval while downlink resources are allocated according to the silence occurrence interval. do.

Subsequently, when data indicating that the silence is generated from the terminal is not received for a predetermined time, the downlink resource is set according to the silence generation interval.

4A illustrates a principle of fast resource allocation in a singular link according to an embodiment of the present invention.

Referring to FIG. 4, the PDCP layer of the terminal checks the size of voice data in the VoIP packet generated in the upper layer and checks whether it corresponds to the size in the silence generation interval. If the size of the voice data is the same as the size in the silence generation interval, it is indicated by '1' in the silence indicator field. If the size of the voice data is larger than the SID size, the voice indicator field is marked as '0'. When header compression of the VoIP packet is required in the PDCP layer, after the compression is performed, a silence indicator field 1 bit indicating a silence generation period is added to the beginning of the header. Thereafter, the terminal transmits the VoIP packet to the base station via the RLC / MAC / PHY layer.

Subsequently, the base station scheduler uses the mute indicator field in the downlink VoIP packet in case of input 1, the mute indicator field of the VoIP packet transmitted from the terminal through uplink in case of input 2, and uplink in case of input 3 Examine the information indicating whether or not to start the VoIP data generation section transmitted by the terminal.

The base station scheduler is. When the uplink resource is allocated and the input 1 is the start of silence generation or the input 3 is the start of the VoiP traffic generation in accordance with the silence generation period, the uplink is adapted to the VoIP data generation interval at one of two cases. Reallocating link resources and notifying the terminal (4-1).

Thereafter, when data indicating that the VoIP data generation period is not received from the terminal for a predetermined time, that is, when there is no data input for the input 3 that is the start of the VoIP data generation, the uplink resource is set according to the silence generation period again. To notify the terminal.

This is a case in which the downlink is the start of silence or the uplink is the start of VoIP data generation. In general, when the user starts speaking, the other party considers the case of starting listening. That is to say, in general, one person is talking at a time.

Since the silence indicator bit is additional information necessary for resource allocation in the base station scheduler, it may be removed when mapping to the RLC / MAC / PHY.

4B is a state diagram illustrating a principle of fast resource allocation in uplink according to an embodiment of the present invention.

Referring to FIG. 4B, the base station scheduler may include: When the uplink resource is allocated for the silence generation section and the data from the base station is the start of the silence generation, the mobile station reassigns the uplink resource for the VoIP data generation section and notifies the terminal.

After that, when data indicating that the silence generation period is not received from the upper base station for a predetermined time, the uplink resource is set according to the silence generation period again.

Alternatively, the base station scheduler reassigns uplink resources to the mobile station by reassigning uplink resources to the mobile station if the data sent from the terminal indicates the VoIP data generation section while the uplink resources are allocated according to the silence occurrence section. Notify.

Thereafter, when data indicating that the VoIP data generation section is not received from the terminal for a predetermined time, the uplink resource is set according to the silence generation section again.

5 is a flowchart illustrating a downlink resource allocation process of a base station according to an embodiment of the present invention.

Referring to FIG. 5, the scheduler of the base station receives an input for at least one of the cases of input 1, input 2, and input 3 described above with reference to FIG. 3 (S510).

Thereafter, the base station scheduler, when downlink resources are allocated according to the silence generation interval, when the input 2 is the start of silence generation or when the input 1 is the start of VoIP data generation (step 515), two cases In the early stage, downlink resources are re-allocated according to the VoIP data generation interval (step 520) and the terminal is notified (step 525).

Thereafter, when the input 2 is the start of silence generation or the input 1 when the input 1 is the start of VoIP data generation for a predetermined time, the downlink resource is allocated again according to the silence generation interval.

This is a case where the uplink is the start of silence or the downlink is the start of the generation of VoIP data. In general, when the other party starts speaking, the user considers the case where he starts to listen. That is to say, in general, one person is talking at a time. Since the silence indicator bit is additional information necessary for resource allocation in the base station scheduler, it may be removed when mapping to the RLC / MAC / PHY.

6 is a flowchart illustrating an uplink resource allocation process of a base station according to an embodiment of the present invention.

Referring to FIG. 6, the scheduler of the base station receives an input for at least one of the cases of input 1, input 2, and input 3 described above with reference to FIG. 4 (S610).

Thereafter, the base station scheduler. In the case where the input 1 is the start of silence generation or the input 3 is the start of VoIP data generation, in a state where an uplink resource is allocated according to the silence generation interval (step 615). In one of two cases, an uplink resource is reallocated according to the VoIP data generation interval (step 620) and notified to the terminal (step 625).

Subsequently, when the input 1 is the start of silence generation or the input 3 when the input 3 is the start of VoIP data generation for a predetermined time, the uplink resource is allocated according to the silence generation interval.

This is a case in which the downlink is the start of silence or the uplink is the start of VoIP data generation. In general, when the user starts speaking, the other party considers the case of starting listening. That is to say, in general, one person is talking at a time.

Since the silence indicator bit is additional information necessary for resource allocation in the base station scheduler, it may be removed when mapping to the RLC / MAC / PHY.

7 is a flowchart illustrating a process of transmitting a state of a silent section or a VoIP data generation section of a terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the PDCP layer of the terminal checks the size of the payload of the VoIP packet provided from the higher layer (step 710). If the payload size is equal to the size of the silent data (7 bytes) (step 715), the silent indicator bit is set and transmitted to the base station (step 720). If the size of the payload is not equal to the size of the silent data (step 715), the silent indicator bit is transmitted to the base station without setting the silent indicator bit (step 725).

As described above, the terminal may transmit the silent indicator bit to the base station by setting the silent indicator bit.

The terminal may indicate a state transition by using the existing LTE uplink channel as follows to inform the detected state information (mute or VoIP data generation information).

First, the base station is multiplied by the " Sounding RS (Reference Signal) " periodically transmitted by the terminal, and the base station initially allocates one additional sequence for each cell. The terminal normally multiplies the existing cell division sequence and multiplies the allocated sequence at the moment of transition to the VoIP data generation interval and transmits the multiplication.

The base station receives a general " Sounding RS " and detects the state transition and changes the resource allocation when an additional allocated sequence is received instead of the general cell sequence. That is, by multiplying and transmitting the cell division sequence to the existing cell division sequence, the silent indicator bit ratio setting process (step 725) may be substituted.

In addition, a method of multiplying the allocated sequence at the moment of transition to the silent section may be transmitted.

Secondly, the mobile station informs the base station on one of channel quality indicator (CQI) information that is periodically posted by the user equipment. The UE normally transmits the CQI value defined only at the moment when the existing CQI is transferred to the VoIP data generation interval. The base station normally receives the existing CQI and detects the state transition and changes the resource allocation when a defined CQI indicating the state transition is received in the VoIP data generation interval.

That is, by transmitting the defined CQI indicating the state transition in the VoIP data generation interval, the silent indicator bit ratio setting process (step 725) may be substituted.

Alternatively, a method of transmitting the defined CQI at the moment of transition to the silent section may be possible.

8A is a block diagram of a terminal according to an embodiment of the present invention.

Referring to FIG. 8A, the terminal includes a communication interface 810, a controller 820, a storage 830, a silence indicator setting unit 840, and a voice packet service manager 850.

The communication interface 810 is a module for communicating with other nodes, and includes a radio processor and a baseband processor. The wireless processor converts the signal received through the antenna into a baseband signal to provide to the baseband processor, and converts the baseband signal from the baseband processor into a radio signal to transmit the baseband signal on an actual wireless path. Send via

The controller 820 controls the overall operation of the terminal. Then, according to the present invention, the voice packet service manager 840 and the mute indicator setter 850 are controlled.

The storage unit 830 functions to store a program for controlling the overall operation of the apparatus and temporary data generated during program execution.

The mute indicator setting unit 840 checks the payload size of the VoIP packet provided by the upper layer, and sets the mute indicator bit to the base station when the payload size is the same as the mute data size (7 bytes). If the size of the payload is not equal to the size of the silent data, it is transmitted to the base station without setting the silent indicator bit.

The voice packet service manager 850 checks the payload size of the VoIP packet provided from the upper layer, and if the payload size is not equal to the size of the silent data (7 bytes), that is, the VoIP data is generated. In this case, the signal is periodically multiplied by "Sounding RS (Reference Signal)", and is multiplied by a sequence used for cell division, and then transmitted by multiplying the allocated sequence.

In addition, the voice packet service management unit 850 checks the payload size of the VoIP packet provided from the upper layer, and if the payload size is not equal to the size of the silent data (7 bytes), that is, the VoIP data is In case of occurrence, the defined CQI value is transmitted instead of the existing CQI value.

In the above-described block configuration, the controller 820 may perform the functions of the silence indicator setting unit 840 and the voice packet service manager 850. In the present invention, it is shown to configure them separately to explain each function separately.

Therefore, when the product is actually implemented, the controller 820 may configure all of the functions of the mute indicator setting unit 840 and the voice packet service manager 750, and only a part of the functions may be processed. It may be configured to process at 820.

8B is a block diagram illustrating a sounding RS transmission of a terminal voice packet service management unit according to an exemplary embodiment of the present invention.

Referring to FIG. 8B, the Talkspurt transition unit 857 checks the payload size of the VoIP packet provided by the upper layer, and if the payload size is not equal to the size of the silent data (7 bytes), that is, When VoIP data occurs, the switch 859 is controlled so that an additionally allocated transition sequence is transmitted through the sounding RS transmitter 855. At this time, the multiplier 860 may further multiply the power offset to transmit. The reason for considering the power offset is that the state transition information may require higher accuracy than receiving conventional " Sounding RS " information because it requires higher accuracy.

8C is a block diagram for CQI transmission of a terminal voice packet service management unit according to an exemplary embodiment of the present invention.

Referring to FIG. 8C, the Talkspurt transition unit 864 checks the payload size of the VoIP packet provided by the upper layer, and if the payload size is not equal to the size of the silent data (7 bytes), that is, When VoIP data is generated, the switch 866 is controlled so that the transition CQI, which is not general CQI information from the CQI measurement unit 870, is transmitted through the CQI transmission unit 862. At this time, the multiplier 868 may further multiply the power offset to transmit. The reason for considering the power offset is that the state transition information may require a higher accuracy than receiving the existing CQI information because it may require a higher output.

9A is a block diagram of a base station according to an embodiment of the present invention.

Referring to FIG. 9A, the base station includes a communication interface 910, a controller 920, a storage 930, and a voice packet service manager 950.

The communication interface 910 is a module for communicating with other nodes, and includes a wireless processor, a wireless baseband processor, a wired processor, and a wired baseband processor.

The wireless processor converts a signal received through an antenna into a baseband signal and provides the baseband signal to the wireless baseband processor, and converts the baseband signal from the wireless baseband processor into a wireless signal so as to be transmitted over an actual wireless path. Transmit through an antenna.

The wired processor converts a signal received through a wired path into a baseband signal, provides the wired baseband processor, and converts a baseband signal from the wired baseband processor into a wireless signal so as to be transmitted on an actual wired path. Transmit via the wired path.

The controller 920 controls the overall operation of the terminal. The voice packet service manager 950 is controlled according to the present invention.

The storage unit 930 stores a program for controlling the overall operation of the apparatus and temporary data generated during program execution.

The voice packet service manager 950 is a silent indicator field in the downlink VoIP packet in the case of input 1, a silent indicator field of the VoIP packet transmitted from the terminal through the uplink in the case of input 2, and in the case of input 3 Examine the information indicating whether the start of the VoIP data generation section transmitted by the terminal through the uplink.

The voice packet service manager 950 may be configured to perform VoIP at the earliest time point when the input 2 is the start of silence or the input 1 is the start of VoIP data in the state where downlink resources are allocated according to the silence generation interval traffic. Reallocates resources according to the data generation section and notifies the terminal.

Thereafter, when the input 2 is the start of silence generation or the input 1 when the input 1 is the start of VoIP data generation for a predetermined time, the downlink resource is allocated again according to the silence generation interval.

This is a case in which the uplink is the start of a silent section or the downlink is the start of VoIP data generation, and in general, the case in which the counterpart starts to listen when the other party starts speaking. That is to say, in general, one person is talking at a time.

The voice packet service manager 950 may be configured to perform VoIP at the earliest time point when the input 1 is the start of muting or the input 3 is the start of VoiP traffic while the uplink resource is allocated to the muting generation section traffic. Reallocates resources in the data generation section and notifies the terminal.

Subsequently, when the input 1 is the start of silence generation or the input 3 when the input 3 is the start of VoIP data generation for a predetermined time, the uplink resource is allocated according to the silence generation interval.

This is a case in which the downlink is the start of silence or the uplink is the start of VoIP data generation. In general, when the user starts speaking, the other party considers the case of starting listening. That is to say, in general, one person is talking at a time.

Since the silence indicator bit is additional information necessary for resource allocation in the base station scheduler, it may be removed when mapping to the RLC / MAC / PHY.

The voice packet service manager 950 may perform a function of a scheduler.

In the above-described block configuration, the controller 920 may perform a function of the voice packet service manager 950. In the present invention, it is shown to configure them separately to explain each function separately.

Accordingly, when the product is actually implemented, all of the functions of the voice packet service manager 950 may be processed by the controller 920, and only some of the functions may be configured to be processed by the controller 920. have.

9B is a block diagram illustrating a sounding RS reception of a base station voice packet service management unit according to an exemplary embodiment of the present invention.

9B, the multiplier 956 multiplies the transition sequence by the data stored in the “Sounding RS Data Store” 958 and received from the terminal, and then the transition detector 957 detects the transition signal. In this case, the uplink scheduler 952 determines that the terminal is a VOIP data generation section.

9C is a block diagram for receiving a CQI of a base station voice packet service management unit according to an embodiment of the present invention.

Referring to FIG. 9C, when the transition detector 962 detects the transition CQI by receiving the CQI from the terminal, the uplink scheduler 960 determines that the terminal is the VOIP data generation section. do.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

1 is a diagram illustrating a typical VoIP packet generation cycle,

2 is a diagram illustrating an existing musk link resource allocation process;

3A is a diagram illustrating a fast resource allocation principle in downlink according to an embodiment of the present invention;

3b is a state diagram illustrating a high speed resource allocation principle in downlink according to an embodiment of the present invention;

4A is a diagram illustrating a fast resource allocation principle in a singular link according to an embodiment of the present invention;

4b is a state diagram illustrating a high speed resource allocation principle in uplink according to an embodiment of the present invention;

5 is a flowchart illustrating a downlink resource allocation process of a base station according to an embodiment of the present invention;

6 is a flowchart illustrating an uplink resource allocation process of a base station according to an embodiment of the present invention;

7 is a flowchart illustrating a process of transmitting a state of a silent section or a VoIP data generation section of a terminal according to an embodiment of the present invention;

8A is a block diagram of a terminal according to an embodiment of the present invention;

8B is a block diagram for sounding RS transmission of a terminal voice packet service management unit according to an embodiment of the present invention;

8C is a block diagram for CQI transmission of a terminal voice packet service management unit according to an embodiment of the present invention;

9A is a block diagram of a base station according to an embodiment of the present invention.

9B is a block diagram for receiving a sounding RS of a base station voice packet service management unit according to an embodiment of the present invention; and

9C is a block diagram for receiving a CQI of a base station voice packet service management unit according to an embodiment of the present invention;

Claims (20)

In the resource allocation method of the base station for the voice packet service, Receiving, by the scheduler, at least one of a voice packet provided from a higher layer, a voice packet received from a terminal, or information indicating a start of a voice packet service data generation section received from the terminal; The scheduler is configured for voice packet service data when information included in the voice packet received from the upper layer indicates the start of voice packet service data generation or information contained in the voice packet received from the terminal indicates the start of silence generation. Reallocating downlink resources; And transmitting information on the reallocated downlink resource to a terminal. The method of claim 1, The scheduler indicates voice packet service data when information included in the voice packet received from the upper layer indicates the start of silence generation or information included in the voice packet received from the terminal indicates the start of voice packet service data generation. Reallocating uplink resources for And transmitting information on the reallocated uplink resource to the terminal. The method of claim 1, The process of reallocating the downlink resource, And performing downlink resources allocated to the silent section. The method of claim 2, The process of reallocating the uplink resources, And performing uplink resources allocated to the silent section. The method of claim 1, After the process of transmitting the information on the reallocated downlink resources to the terminal, When the scheduler fails to receive a voice packet including information indicating the start of voice packet service data generation from the upper layer or including information indicating the start of silence generation from the terminal for a predetermined time, the scheduler re-reduces downlink resources for silence. Assigning process, And transmitting the information on the reallocated downlink resource to the terminal. The method of claim 2, After the process of transmitting the information on the reallocated uplink resources to the terminal, If the scheduler fails to receive a voice packet including information indicating the start of silence generation from the higher layer or including information indicating the start of voice packet service data generation from the terminal for a predetermined time, the scheduler reallocates an uplink resource for silence. Process, Transmitting the information on the reallocated uplink resource to the terminal. In the apparatus of the base station for performing scheduling for voice packet service, Receives at least one of a voice packet received from a higher layer, a voice packet received from a terminal, or information indicating a start of a voice packet service data generation section received from the terminal, and included in the voice packet provided from the upper layer. Indicates the start of voice packet service data generation or when the information contained in the voice packet received from the terminal indicates the start of silence generation, voice for reallocating downlink resources for voice packet service data generation and transmitting the same to the terminal. And a packet service management unit. The method of claim 7, wherein The voice packet service management unit, If the information contained in the voice packet received from the upper layer indicates the start of silence generation, or if the information contained in the voice packet received from the terminal indicates the start of voice packet service data generation, the information is increased to generate voice packet service data. And reallocating link resources and transmitting information on the reallocated uplink resources to the terminal. The method of claim 7, wherein The voice packet service management unit, And reassigning uplink resources while the downlink resources are allocated according to the silent period. The method of claim 8, The voice packet service management unit, And reassigning uplink resources while the uplink resources are allocated for the silent period. The method of claim 7, wherein The voice packet service management unit, After transmitting the information on the reallocated downlink resource to the terminal, receiving a voice packet containing information indicating the start of voice packet service data generation from the upper layer or from the terminal for a predetermined time If not, reallocating a downlink resource for silence, and transmitting information on the reassigned downlink resource to the terminal. The method of claim 8, The voice packet service management unit, After transmitting the information on the reassigned uplink resource to the terminal, the scheduler may receive a voice packet including information indicating the start of silence generation from the upper layer or including the start of voice packet service data generation from the terminal. If it does not receive for a predetermined time, the device is characterized by reallocating uplink resources for silence, and transmitting information on the reassigned uplink resources to the terminal. In the voice packet service state providing method of the terminal, Checking whether the size of the voice packet payload is the same as the size of the silent payload, When the size of the voice packet payload is equal to the size of the silent payload, transmitting a sounding reference signal multiplied by an existing cell division sequence to a base station; If the size of the voice packet payload is not equal to the size of the silent payload, transmitting a sounding reference signal obtained by multiplying an existing cell division sequence by a sequence representing voice data generation to the base station; How to. The method of claim 13, If the size of the voice packet payload is the same as the silence payload size, transmitting a sounding reference signal to the base station by multiplying a cell sequence indicating silence by an existing cell division sequence; If the size of the voice packet payload is not the same as the silence payload size, transmitting a sounding reference signal multiplied by an existing cell division sequence to the base station. The method of claim 13, If the size of the voice packet payload is the same as the silence payload size, transmitting the existing channel quality identifier information to the base station; If the size of the voice packet payload is not the same as the silent payload size, transmitting channel quality identifier information indicating voice data generation to the base station. The method of claim 13, When the size of the voice packet payload is equal to the size of the silent payload, transmitting channel quality identifier information indicating generation of voice data to the base station; If the size of the voice packet payload is not the same as the silent payload size, transmitting the existing channel quality identifier information to the base station. A device of a terminal for providing a voice packet service state, If the size of the voice packet payload is equal to the size of the silent payload, and if the size of the voice packet payload is the same as the size of the silent payload, a sounding reference signal multiplied by the existing cell division sequence is transmitted to the base station. If the size of the voice packet payload is not the same as the silence payload size, the voice packet service management unit for transmitting a sounding reference signal obtained by multiplying a conventional cell division sequence by a cell sequence indicating voice data generation to the base station Apparatus comprising a. The method of claim 17, The voice packet service management unit, When the size of the voice packet payload is equal to the size of the silent payload, a sounding reference signal obtained by multiplying an existing cell division sequence by a cell sequence indicating silence is transmitted to the base station, and the size of the voice packet payload is equal to the size of the voice packet payload. And if it is not equal to the silence payload size, transmitting a sounding reference signal multiplied by an existing cell discrimination sequence to the base station. The method of claim 17, The voice packet service management unit, If the size of the voice packet payload is the same as the silent payload size, the existing channel quality identifier information is transmitted to the base station, and if the size of the voice packet payload is not the same as the silent payload size, the voice And transmitting channel quality identifier information indicating data generation to the base station. The method of claim 17, The voice packet service management unit, If the size of the voice packet payload is the same as the silent payload size, channel quality identifier information indicating voice data generation is transmitted to the base station, and the size of the voice packet payload is not the same as the silent payload size. In the case, the existing channel quality identifier information, characterized in that for transmitting to the base station.

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