KR101481726B1 - Apparatus and method for fast resource allocation in voip service - Google Patents

Abstract

The present invention relates to a voice packet service and a method of allocating resources for a voice packet service in a base station, the method comprising the steps of: Receiving at least one of information informing the start of a voice packet service data generation period received from the terminal, and the scheduler notifying the start of voice packet service data generation when the information included in the voice packet provided from the upper layer indicates start of voice packet service data generation A step of reallocating downlink resources for voice packet service data when information included in a voice packet received from the subscriber station indicates start of silence; and transmitting information on the reallocated downlink resource to the subscriber station Include In the voice packet service, it is possible to know and predict the state of the VoIP data generation period and the silence generation period, thereby maximizing the capacity through efficient allocation of resources, and at the same time, satisfying the requirements of the delay time of the VoIP service sensitive to the delay time There is an advantage to be able to.

 VOIP, AMR, RTP, TCP, UDP, IP.

Description

[0001] APPARATUS AND METHOD FOR FAST RESOURCE ALLOCATION IN VOIP SERVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice over IP (VoIP) system and a VoIP data generation period and a silent descriptor (SID) interval in a mobile communication system in which packet scheduling is performed. A base station scheduler, and a base station to predict a VoIP data generation period and a silence generation period, thereby enabling more efficient resource allocation.

 Today, the mobile communication system is evolving from the initial voice-oriented service provision to a high-speed, high-quality wireless data packet communication system for providing data service and multimedia service.

Voice over Internet Protocol (VoIP) is a method of transmitting voice data generated by a voice codec to an Internet Protocol (IP) / User Datagram Protocol (UDP) / Real-time Transport Protocol (RTP) And generates and transmits a packet.

The VoIP is a technology proposed to provide a voice service provided through a Circuit Switched Network such as a Public Switched Telephone Network (PSTN) through a packet network such as an IP network.

In order to provide delay-sensitive VoIP service through the wireless data packet communication network, the VoIP service requirement for delay should be satisfied.

However, there is a problem that scheduling of a VoIP packet in which small data occurs frequently by using a scheduling method for an existing packet service can not be coped with due to increase and delay of control information for informing resource information .

In addition, the increase of the control information indicates a decrease in resources for transmitting actual data and causes a decrease in the total capacity. In the case of a VoIP service in which small-sized data frequently occurs, it is necessary to reduce the amount of control information that is increased in proportion to the user, in order to improve the service quality. For this reason, in the case of VoIP service, a semi-permanent resource allocation scheme is being 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 characterized in that data is discontinuously generated according to a VoIP data generation period (101, 103) and a silent period (SID) generation period (silent period) . FIG. 1 illustrates an AMR (Adaptive Multi-Rate) codec as an example.

During the VoIP data generation periods 101 and 103, voice data 104 and 106 are generated once every 20 ms and 7 bytes of data 105 indicating silence are generated every 160 ms during the silence period 102 .

If resources fixed according to the VoIP data generation periods 101 and 103 are allocated, resources are wasted in the silence period 102 having a long period of 8 times.

On the other hand, if the resources are allocated to the silence generation period 102, resources for transmitting data in the VoIP data generation periods 101 and 103 are insufficient to meet the delay requirement as a requirement of the voice service There is a problem that can not be done.

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

The VoIP packet processed in the IP / UDP / RTP layer may be delivered to the RLC / MAC layer without being compressed or compressed in the Packet Data Convergence Protocol (PDCP) layer.

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

AMR codec mode Payload Size
(in byte) Total size in byte
(For the Full header) Total size in byte
(For compressed headers) AMR 4.75 kbit / s 14 79 17-29 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 ~ 33 AMR 7.40 kbit / s
(TDMA-EFR) 20 85 23 ~ 35 AMR 7.95 kbit / s 22 87 25 to 37 AMR 10.2 kbit / s 27 92 30 ~ 42 AMR 12.2 kbit / s
(GSM-EFR) 32 97 35 ~ 47 AMR SID 7 72 10 to 22

Table 1 shows the size of the VoIP packet according to the codec mode. The size of the IP / UDP / RTP header is 40 bytes based on IPv4, 60 bytes based on IPv6, When compressed, the size is reduced by 3 to 15 bytes.

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

However, the VoIP packet received from the scheduler of the base station is a combination of the IP / UDP / RTP header and the voice data. Therefore, when header compression is performed in the PDCP layer, since data of 4.75 kbit / s to 6.70 kbit / s of AMR overlap with AMR silence data (AMR SID), separate payload size information is not provided There is a problem that the base station scheduler can not distinguish only the size of the entire received packet. Therefore, since the base station scheduler can not correctly distinguish the VoIP data generation period and the silence generation period, resources can not be allocated according to the situation in which the interval is changed.

If the silence generation period can not be predicted, a problem occurs in the allocation of uplink resources as shown in FIG.

FIG. 2 is a diagram illustrating a conventional artificial link resource allocation process.

Referring to FIG. 2, when a small radio resource is allocated every 160 ms in the silence period 202 and the terminal is switched to the VoIP data generation period 203, the shangelink radio resources are still allocated every 160 ms 204) and the next 160 ms, the base station can know the VoIP data generation period. This is very large given that the end-to-end delay requirement is less than 200ms in LTE systems.

Also, when the corresponding item is to be transmitted to the UE through the control message, the delay time due to the control message transmission can not be ignored. Accordingly, there is a need for an apparatus and a method capable of predicting a time point of switching from a silence period to a VoIP data generation period and allocating radio resources in advance before a VoIP data generation period.

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

It is another object of the present invention to maximize the capacity through efficient allocation of resources by allowing the VoIP data generation period and the silence period to be known and predicted in the voice packet service, and at the same time, And to provide a device and a method for ensuring the requirements for the system.

According to a first aspect of the present invention, there is provided a method of allocating resources for a base station for a voice packet service, the method comprising: receiving a voice packet received from a higher layer or a voice packet received from the terminal, And a scheduler for receiving at least one of information indicating a start of a packet service data generation period and a scheduler for scheduling a start of a packet service data generation period when the information included in a voice packet provided from the upper layer indicates a start of voice packet service data generation, The method comprising the steps of: reallocating downlink resources for voice packet service data when information included in a packet indicates initiation of silence; and transmitting information on the reallocated downlink resources to the terminal .

According to a second aspect of the present invention, there is provided a method of providing a voice packet service state of a terminal, comprising the steps of: checking whether a size of a voice packet payload is the same as a size of a silence payload; Transmitting a sounding reference signal multiplied by an existing cell separation sequence to a base station when the size of the voice packet payload is equal to the size of the silence payload; And transmitting a sounding reference signal obtained by multiplying a cell separating sequence by a sequence representing the generation of voice data to the base station.

The present invention maximizes the capacity by efficiently allocating resources by allowing the VoIP data generation section and the silence generation section to be known and predicted in the voice packet service, and at the same time, the requirements for the delay time of the VoIP service sensitive to the delay time Can be satisfied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

In the present invention, there is a part for determining whether the VoIP packet is silent data or voice data by checking the size of the VOIP packet excluding the IP / UDP / RTP header and the UDP checksum in the PDCP layer of the transmitter of the base station and the terminal. The scheduler of the present invention operates on the PDCP layer.

A part indicating whether silence data is added by adding 1 bit of a silence indicator (SID ind) field information indicating the silence data in front of the header and a silence indicator field of a VoIP packet descending from the base station scheduler or received from the terminal are checked It also uses a configuration to perform a change of resources.

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, i.e., the payload excluding the IP / UDP / RTP header and the UDP checksum, to determine whether it is silent data or voice data. At the head of the VoIP packet header, 1 bit is added to the silence indicator (SID ind) field information indicating the silence data to indicate whether silence data is present. In the case of a compressed VOIP packet, only a compressed header (ROHC (RObust Header Compression) header) exists as a header.

In addition, the present invention provides a base station scheduler that predicts a transition between a VoIP data generation interval and a silence interval of a downlink / uplink using a reverse link, i.e., uplink / downlink information, And the like.

First, a terminal, a base station apparatus, and a method for notifying a base station of a change in a VoIP data generation period in a silence interval through an uplink resource will be described.

In order to inform the detected state transition information, the UE may establish a separate channel on the uplink to inform the base station of the silence indicator (SID ind). For example, a VoIP user can also be assigned a Scheduling Request Indicator (SRI) for use as a silent indicator (SID ind).

Alternatively, the UE can display the state transition using the existing LTE uplink channel to inform the detected state transition information.

First, a terminal periodically transmits a "Sounding RS" (reference signal), and the base station initially allocates one sequence to be used for cell classification purposes.

The terminal typically multiplies the existing cell sort sequence, multiplies the additional allocated sequence at the instant of transition to the VoIP data generation period, and transmits the multiplied sequence. The base station receives a general "Sounding RS" and detects a state transition when a sequence multiplied by a sequence which is not a general cell sequence is received, and changes the resource allocation.

Secondly, the UE informs the base station of the CQI (Channel Quality Indicator) information that the UE periodically raises. The UE transmits the CQI value defined only at the moment of transition to the VoIP data generation period after transmitting the existing CQI. The base station usually receives the existing CQI, and when a defined CQI indicating the state transition is received in the VoIP data generation period, the base station detects the state transition and changes the resource allocation.

The base station scheduler of the present invention predicts the state transition between the VoIP data generation interval and the silence interval of the downlink / uplink using a reverse link, i.e. uplink / downlink information, to shorten the radio resource allocation time A description will be given below.

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

Referring to FIG. 3A, the BS scheduler checks whether a size of voice data in a VoIP packet received from an upper layer corresponds to a size of a silence period (SID). If the size of the voice data of the VoIP packet is equal to the size in the silence period, the silence indicator field (SID ind field) is displayed as '1'. If the size of the voice data of the VoIP packet is larger than the size in the silence period, the silence indicator field displays '0'. If the header scheduling of the VoIP packet is required, the BS scheduler adds 1 bit of the mute indicator field indicating that the header is a silence period after the header is compressed.

Hereinafter, the base station scheduler is assumed to be a silent indicator field in the downlink VoIP packet in the case of the input 1, a silence indicator field in the VoIP packet transmitted in the terminal in the uplink in the case of the input 2, The information indicating whether the VoIP data generation section transmitted by the terminal is started or not is checked.

Wherein the base station scheduler comprises: In the case where the input 2 is at the start of silence or the input 1 is at the start of VoIP data generation in a state where the downlink resources are allocated in accordance with the silence occurrence period, And reassigns the link resource to notify the terminal (3-1).

Thereafter, when data indicating that a VoIP data generation period is not received from the base station for a predetermined time period, that is, when there is no data input for the input 1 indicating a VoIP data generation period, the downlink resource is again transmitted to the silence generation period And informs the terminal of the setting.

This is a case where the uplink is the start of the silence period or the downlink is the start of VoIP data generation. In general, when the other party starts to talk, the user himself / herself starts listening. That is, in the general case, one person is talking at a time.

The mute indicator bit may be removed at the time of mapping to the RLC / MAC / PHY since it is additional information necessary for resource allocation in the BS scheduler.

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

Referring to FIG. 3B, the base station scheduler includes: In a state where the downlink resources are allocated in accordance with the silence occurrence period, when the base station has started generating VoIP data, the downlink resources are reassigned to the terminal according to the VoIP data generation period.

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

Alternatively, the BS scheduler may reallocate the downlink resources according to the VoIP data generation period, when the data sent from the terminal indicates the silence period in a state where downlink resources are allocated in accordance with the silence period, do.

Thereafter, when data indicating that the silence period is not received from the terminal for a predetermined period of time, the downlink resource is set again according to the silence period.

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

Referring to FIG. 4, in the PDCP layer of the UE, the size of the voice data in the VoIP packet generated in the upper layer is checked to determine whether it corresponds to the size in the silence period. If the size of the voice data is the same as the size in the silence period, '1' is displayed in the silence indicator field. If the size of the voice data is larger than the size of the SID, '0' is displayed in the mute indicator field. If the header compression of the VoIP packet is required in the PDCP layer, a 1-bit mute indicator field is added to the head of the header to indicate that it is a silence period after the header is compressed. Then, the UE transmits the VoIP packet to the base station via the RLC / MAC / PHY layer.

Hereinafter, the base station scheduler is assumed to be a silent indicator field in the downlink VoIP packet in the case of the input 1, a silence indicator field in the VoIP packet transmitted in the terminal in the uplink in the case of the input 2, The information indicating whether the VoIP data generation section transmitted by the terminal is started or not is checked.

Wherein the base station scheduler comprises: In the case where the input 1 is at the start of silence or the input 3 is at the start of the VoiP traffic generation in the state where the uplink resources are allocated in accordance with the silence occurrence period, And reassigns the link resources to notify the terminal (4-1).

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

This is a case where the downlink is the start of mute or the uplink is the start of VoIP data generation. Therefore, in general, when the user starts talking, the other party starts to listen. That is, in the general case, one person is talking at a time.

The mute indicator bit can be removed at the time of mapping to RLC / MAC / PHY since it is additional information necessary for resource allocation in the BS scheduler.

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

Referring to FIG. 4B, the base station scheduler includes: In the case where the uplink resources are allocated in accordance with the silence occurrence period and the data from the base station starts to generate silence, the uplink resources are reassigned to the terminal according to the VoIP data generation period.

Thereafter, if data indicating that a silence period is not received from the upper level of the base station for a predetermined period of time, the uplink resource is set again according to the silence period.

Alternatively, the BS scheduler may reallocate uplink resources according to a VoIP data generation interval if the data sent by the MS indicates a VoIP data generation period in a state where uplink resources are allocated in accordance with a silence period, Notify.

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

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 input 1, the input 2, and the input 3 described above with reference to FIG. 3 (operation 510).

Thereafter, the base station scheduler determines whether the input 2 is the start of silence or the input 1 is the start of VoIP data generation (step 515) while the downlink resources are allocated according to the silence period, The UE allocates the downlink resources to the UE in step 520 and notifies the UE in step 525.

Thereafter, when the input 2 is at the start of silence, or when the input at the start of the VoIP data is not present for a predetermined time, the downlink resource is allocated again according to the silence period.

This is a case where the uplink is the start of mute or the downlink is the start of VoIP data generation. Therefore, in general, when the other party starts to talk, the user himself / herself starts listening. That is, in the general case, one person is talking at a time. The mute indicator bit can be removed at the time of mapping to RLC / MAC / PHY since it is additional information necessary for resource allocation in the BS scheduler.

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 input 1, the input 2, and the input 3 described above with reference to FIG. 4 in operation 610.

Thereafter, the base station scheduler comprises: In the case where the input 1 is the start of the silence or the input 3 is the start of the VoIP data generation in the state where the uplink resources are allocated in accordance with the silence occurrence period (step 615). In step 625, uplink resources are reallocated in accordance with the VoIP data generation period at an earlier point in time (step 620), and notified to the terminal (step 625).

Thereafter, when the input 1 is the start of the silence or the input 3 is the input of the VoIP data start, the uplink resource is allocated according to the silence period if there is no input for a certain period of time.

This is a case where the downlink is the start of mute or the uplink is the start of VoIP data generation. Therefore, in general, when the user starts talking, the other party starts to listen. That is, in the general case, one person is talking at a time.

The mute indicator bit can be removed at the time of mapping to RLC / MAC / PHY since it is additional information necessary for resource allocation in the BS scheduler.

FIG. 7 is a flowchart illustrating a process of transmitting a mute interval or a VoIP data generation interval status of a UE according to an embodiment of the present invention.

Referring to FIG. 7, the PDCP layer of the UE checks the payload size of a VoIP packet provided in an upper layer (step 710). If the size of the payload is equal to the size of the silence data (7 bytes) (step 715), the mute 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 mobile station transmits the silent indicator bit to the base station without setting the mute indicator bit (step 725).

The UE may set a mute indicator bit and transmit the mute indicator bit to the BS using various methods as described above.

The UE can display a state transition using an existing LTE uplink channel to inform the detected state information (silence or VoIP data generation information) as follows.

First, a "Sounding RS (Reference Signal)" periodically transmitted by the UE is multiplied, and a sequence used for cell sorting is initially allocated to each cell by the base station. The terminal typically multiplies the existing cell sort sequence, multiplies the additional allocated sequence at the instant of transition to the VoIP data generation period, and transmits the multiplied sequence.

The base station receives a general "Sounding RS" and detects a state transition when receiving an additional allocated sequence rather than a general cell sequence, and changes resource allocation. That is, the above-described silence indicator bit ratio setting process (step 725) may be performed by multiplying the existing cell sort sequence by the cell sort sequence and transmitting the result.

Also, it is possible to multiply the additional allocated sequence at the instant of transition to the silence period and transmit the result.

Secondly, the UE informs the base station of the CQI (Channel Quality Indicator) information that the UE periodically raises. The UE transmits the CQI value defined only at the moment of transition to the VoIP data generation period after transmitting the existing CQI. The base station usually receives the existing CQI, and when a defined CQI indicating the state transition is received in the VoIP data generation period, the base station detects the state transition and changes the resource allocation.

That is, by transmitting the defined CQI indicating the state transition to the VoIP data generation period, the above-mentioned silence indicator bit ratio setting process (step 725) can be substituted.

Alternatively, a method of transmitting the CQI defined at the moment of transition to the silence interval is also possible.

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

8A, the terminal includes a communication interface 810, a control unit 820, a storage unit 830, a mute indicator setting unit 840, and a voice packet service management unit 850.

The communication interface 810 is a module for communicating with other nodes, and includes a radio processing unit and a baseband processing unit. The radio processor converts the signal received through the antenna into a baseband signal and provides the baseband signal to the baseband processor. The baseband processor converts the baseband signal from the baseband processor into a radio signal for transmission over an actual radio path, Lt; / RTI >

The controller 820 controls the overall operation of the terminal. The voice packet service management unit 840 and the silence indicator setting unit 850 are controlled according to the present invention.

The storage unit 830 stores 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 size of the payload of the VoIP packet provided in the upper layer. If the size of the payload is equal to the size of the mute data (7 bytes), the mute indicator setting unit 840 sets the mute indicator bit If the size of the payload is not equal to the size of the silence data, the mobile station transmits the silence indicator bit to the base station without setting the mute indicator bit.

If the size of the payload is not equal to the size (7 bytes) of the silent data, that is, the VoIP data is generated In this case, it is multiplied by a "Sounding RS (reference signal)" that is transmitted periodically, and the sequence used for cell sorting is multiplied by the sequence further allocated and transmitted.

If the size of the payload is not equal to the size (7 bytes) of the silence data, that is, if the size of the payload of the VoIP packet is not equal to the size of the silence data (7 bytes), the voice packet service management unit 850 In case of occurrence, the defined CQI value is transmitted without transmitting 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 management unit 850. In the present invention, these are separately constructed and described in order to describe each function separately.

Accordingly, when the product is actually implemented, the control unit 820 may process both the functions of the silence indicator setting unit 840 and the voice packet service management unit 750, (820).

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

Referring to FIG. 8B, the Talkspurt transition unit 857 checks the size of the payload of the VoIP packet provided in the upper layer. If the size of the payload is not equal to the size (7 bytes) of the silence data, When VoIP data is generated, the switch 859 is controlled to cause the further allocated resource utilization sequence to be transmitted through the sounding RS transmission unit 855. At this time, the multiplier 860 may multiply the power offset and transmit the result. The reason for considering the power offset is that it may require a higher output because the state transition information requires better accuracy than the conventional "Sounding RS" information.

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

Referring to FIG. 8C, the Talkspurt transition unit 864 checks the size of the payload of the VoIP packet provided in the upper layer. If the size of the payload is not equal to the size (7 bytes) of the silence data, When the VoIP data is generated, the switch 866 is controlled to cause the CQI transmission unit 862 to transmit the CQI information, which is not general CQI information from the CQI measurement unit 870. At this time, the multiplier 868 may multiply the power offset and transmit the result. The reason for considering the power offset is that since the state transition information requires higher accuracy than the conventional CQI information, higher power may be required.

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

9A, the base station includes a communication interface 910, a control unit 920, a storage unit 930, and a voice packet service management unit 950.

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

The radio processor converts the signal received through the antenna into a baseband signal and provides the baseband signal to the radio baseband processor. The baseband processor converts the baseband signal from the radio baseband processor into a radio signal, Lt; / RTI >

The wired processing unit converts the signal received through the wired path into a baseband signal and provides the baseband signal to the wired baseband processor. The wired processor changes the baseband signal from the wired baseband processor to a wireless signal so that the baseband signal can be transmitted on the actual wired path And transmits through the wired path.

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

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

The voice packet service management unit 950 manages the silence indicator field in the downlink VoIP packet in the case of the input 1, the silence indicator field of the VoIP packet transmitted in the terminal in the uplink in the case of the input 2, Information indicating whether the VoIP data generation section transmitted by the UE is started is checked through the uplink.

The VoIP service management unit 950 manages VoIP service in the state where the downlink resource is allocated in accordance with the silence period traffic, when the input 2 is the start of the silence, or when the input 1 is the VoIP data generation start, Allocates the resources according to the data generation period, and notifies the terminal.

Thereafter, when the input 2 is at the start of silence, or when the input at the start of the VoIP data is not present for a predetermined time, the downlink resource is allocated again according to the silence period.

This is a case where the uplink is the start of the silence period or the downlink is the start of VoIP data generation. In general, when the other party starts to talk, the user himself / herself starts listening. That is, in the general case, one person is talking at a time.

The VoIP service management unit 950 manages VoIP traffic at the earliest point of time when the input 1 is at the start of the silence occurrence or the input 3 is the VoiP traffic start at the time when the uplink resources are allocated to the silence period traffic, And reassigns the resource to the terminal in the data generation period.

Thereafter, when the input 1 is the start of the silence or the input 3 is the input of the VoIP data start, the uplink resource is allocated according to the silence period if there is no input for a certain period of time.

This is a case where the downlink is the start of mute or the uplink is the start of VoIP data generation. Therefore, in general, when the user starts talking, the other party starts to listen. That is, in the general case, one person is talking at a time.

The mute indicator bit can be removed at the time of mapping to RLC / MAC / PHY since it is additional information necessary for resource allocation in the BS scheduler.

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

In the above-described block configuration, the control unit 920 may perform the function of the voice packet service management unit 950. In the present invention, these are separately constructed and described in order to describe each function separately.

Therefore, when the product is actually implemented, the control unit 920 may process all the functions of the voice packet service management unit 950, or may be configured to process only a part of the functions in the control unit 920 have.

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

Referring to FIG. 9B, the multiplier 956 multiplies the data stored in the "Sounding RS Data Store" 958 by the multiplier 956 with the data received from the terminal, and the transition detector 957 detects the transmission signal The uplink scheduler 952 determines that the terminal is in the VOIP data generation period.

FIG. 9C is a block diagram illustrating a CQI reception of a base station voice packet service management unit according to an embodiment of the present invention. Referring to FIG.

9C, when the CQI receiver 964 receives the CQI from the UE and the transition detector 962 detects the CQI used by the UE, the uplink scheduler 960 determines that the UE is in the VOIP data generation period do.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

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

2 is a diagram illustrating a conventional artificial link resource allocation process,

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

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

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

4B is a diagram illustrating a fast resource allocation principle in an 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;

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

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

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

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

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

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

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

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

Claims (20)

A method of allocating resources of a base station for a voice packet service, Allocating resources in response to data traffic when confirming data generation start information; Allocating resources in response to silence traffic when the data generation start information is not confirmed for a set time or when silence start information is checked; Comparing the size of the voice data with the size of the silence generation period, and displaying a value corresponding to the identity of the result in the silence indicator field; And transmitting information on the allocated resource to the terminal, Wherein the data generation start information is generated by a further assigned sequence. The method according to claim 1, Wherein the data generation start information is generated by transmitting a predefined CQI when the UE generates the data. The method according to claim 1, Wherein the allocating the resource comprises: When the information included in the voice packet provided from the upper layer indicates the start of voice packet service data generation or when the information included in the voice packet received from the terminal indicates the start of silence, Reallocating, When the information included in the voice packet checked by the upper layer indicates the start of silence or when the information included in the voice packet received from the terminal indicates the start of voice packet service data generation, And re- And transmitting information on the reallocated uplink resource and the downlink resource to the terminal. The method of claim 3, Wherein the step of reallocating the downlink resource and the step of reallocating the uplink resource comprise: Wherein the resource is allocated in accordance with the silence period. The method of claim 3, After the process of transmitting information on the reallocated downlink resource to the terminal, The scheduler indicates the start of voice packet service data generation from an upper layer or a process of reallocating downlink resources for silence occurrence when a voice packet including information indicating the start of silence is not received from the terminal for a predetermined time and, And transmitting the information on the reallocated downlink resource to the terminal. The method of claim 3, After transmitting the information on the reallocated UL resource to the UE, When the scheduler indicates the start of silence from the upper layer or does not receive a voice packet including information indicating the start of voice packet service data generation from the terminal for a predetermined time, the scheduler reassigns uplink resources for silence generation and, And transmitting information on the reallocated uplink resource to the mobile station. An apparatus of a base station for performing scheduling for a voice packet service, Allocating resources corresponding to data traffic when the data generation start information is checked, assigning resources corresponding to the silence traffic when the data generation start information is not confirmed for a predetermined time, A voice packet service for comparing the size of the voice data with the size of the silence occurrence period, displaying a value corresponding to the identity of the result in the silence indicator field, and transmitting the allocated resource information to the terminal Wherein the data generation start information is generated by an additional assigned sequence. 8. The method of claim 7, Wherein the data generation start information is generated by transmitting a predefined CQI when the UE generates the data. 8. The method of claim 7, The voice packet service management unit, When the information included in the voice packet checked by the upper layer indicates the start of silence or when the information included in the voice packet checked by the terminal indicates the start of voice packet service data generation, And transmits information on the reallocated uplink resource to the terminal. 8. The method of claim 7, The voice packet service management unit, And reallocates resources in a state where resources are allocated to the silence period. 8. The method of claim 7, The voice packet service management unit, The base station transmits information on the reallocated downlink resource to the mobile station, and then indicates the start of the voice packet service data generation from the upper layer or does not receive the voice packet including the information indicating the start of silence from the mobile station for a predetermined time Allocates a downlink resource for silence occurrence, and transmits information on the reallocated downlink resource to the terminal. 8. The method of claim 7, The voice packet service management unit, After transmitting the information on the reallocated uplink resources to the UE, the scheduler indicates a start of silence from the upper layer or a voice packet including information indicating the start of voice packet service data generation from the terminal for a predetermined time Allocates uplink resources for silence generation, and transmits information on the reallocated uplink resources to the terminal. A method for providing a voice packet service state of a terminal, Checking whether the size of the voice packet payload is the same as the size of the silence payload, Transmitting a sounding reference signal multiplied by an existing cell separation sequence to a base station when the size of the voice packet payload is equal to the size of the silence payload; Transmitting a sounding reference signal obtained by multiplying an existing cell separation sequence by a sequence indicating generation of voice data to the base station when the size of the voice packet payload is not equal to the size of the silence payload; Receiving a reallocation signal from the base station; And the reallocation signal is allocated to the base station by receiving the generation information of the voice data. 14. The method of claim 13, Transmitting a sounding reference signal obtained by multiplying an existing cell sorting sequence by a cell sequence indicating mute when the size of the voice packet payload is equal to the size of the silence payload; And transmitting a sounding reference signal multiplied by an existing cell sorting sequence to the base station if the size of the voice packet payload is not equal to the size of the silence payload. 14. The method of claim 13, Transmitting the existing channel quality indicator information to the BS if the size of the voice packet payload is equal to the size of the silence payload; And transmitting channel quality identifier information indicating generation of voice data to the base station when the size of the voice packet payload is not equal to the size of the silence payload. 14. The method of claim 13, Transmitting channel quality indicator information indicating generation of voice data to the base station when the size of the voice packet payload is equal to the size of the silence payload; Further comprising the step of transmitting the existing channel quality identifier information to the base station when the size of the voice packet payload is not equal to the size of the silence payload. An apparatus 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 silence payload, a sounding reference signal multiplied by an existing cell separation sequence is transmitted to the base station And transmitting a sounding reference signal obtained by multiplying an existing cell sort sequence by a cell sequence indicating generation of voice data to the base station when the size of the voice packet payload is not equal to the size of the silence payload, And a voice packet service management unit receiving the reallocation signal, wherein the reallocation signal is allocated to the base station by receiving the generation information of the voice data. 18. 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 silence payload, transmitting a sounding reference signal obtained by multiplying an existing cell separation sequence by a cell sequence indicating silence to the base station, And transmits a sounding reference signal multiplied by an existing cell separation sequence to the base station if the size is not equal to the silence payload size. 18. 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 silence payload, transmits the existing channel quality identifier information to the base station, and when the size of the voice packet payload is not equal to the size of the silence payload, And transmits channel quality indicator information indicating the occurrence of data to the base station. 18. The method of claim 17, The voice packet service management unit, And transmitting the channel quality identifier information indicating generation of voice data to the base station when the size of the voice packet payload is equal to the size of the silence payload, And transmits the existing channel quality indicator information to the base station.

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