KR20050063826A - Method for allocating radio resource in radio communication system - Google Patents

Method for allocating radio resource in radio communication system Download PDF

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Publication number
KR20050063826A
KR20050063826A KR1020030094037A KR20030094037A KR20050063826A KR 20050063826 A KR20050063826 A KR 20050063826A KR 1020030094037 A KR1020030094037 A KR 1020030094037A KR 20030094037 A KR20030094037 A KR 20030094037A KR 20050063826 A KR20050063826 A KR 20050063826A
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signaling
radio resource
user
uplink
radio
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KR1020030094037A
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Korean (ko)
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임빈철
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엘지전자 주식회사
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Publication of KR20050063826A publication Critical patent/KR20050063826A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Abstract

본 발명은 TDD-TDMA-SDMA시스템에서의 무선자원 할당방법에 관한 것으로서, 상하향링크에서 데이터와 시그널링이 모두 있는 사용자와 시그널링만 있는 사용자를 구분하여 무선자원을 할당하며, 특히 시그널링만 있는 사용자의 시그널링 신호는 정해진 무선자원에만 국한하여 할당하며, 일반 자원처럼 시간 분할하여 사용된다. The present invention relates to a radio resource allocation method in a TDD-TDMA-SDMA system, in which radio resources are allocated by distinguishing a user who has both data and signaling and a user who has only signaling in uplink and downlink. The signal is allocated only to a predetermined radio resource, and used in time division like a general resource.

Description

무선통신 시스템의 무선자원 할당방법{METHOD FOR ALLOCATING RADIO RESOURCE IN RADIO COMMUNICATION SYSTEM}Radio resource allocation method of wireless communication system {METHOD FOR ALLOCATING RADIO RESOURCE IN RADIO COMMUNICATION SYSTEM}

본 발명은 무선통신 시스템의 무선자원 할당방법에 관한 것으로서, 특히 TDD-TDMA-SDMA방식을 기반으로 하는 무선 통신시스템에서의 무선자원 할당방법에 관한 것이다.The present invention relates to a radio resource allocation method of a radio communication system, and more particularly, to a radio resource allocation method in a radio communication system based on the TDD-TDMA-SDMA scheme.

일반적으로 TDD-TDMA-SDMA방식의 무선 통신시스템에서는 사용자 단말에게 상향 및 하향링크의 무선 자원을 할당하여 사용자 단말과 통신을 수행한다. In general, a TDD-TDMA-SDMA wireless communication system allocates uplink and downlink radio resources to a user terminal to communicate with the user terminal.

도 1은 종래의 TDD-TDMA-SDMA시스템의 자원할당 방법을 나타낸 도면이다.1 is a diagram illustrating a resource allocation method of a conventional TDD-TDMA-SDMA system.

도 1에 도시된 바와같이, TDD-TDMA-SDMA시스템은 각각 상향 및 하향 링크를 동일한 수의 슬롯으로 나눈 다음 각 슬롯마다 다수의 공간채널을 형성하여 사용자들에게 할당한다. 이 경우 TDD-TDMA-SDMA시스템은 상향 및 하향링크의 대칭되는 무선자원을 쌍으로 할당해 주는데, 예를들면, 사용자 1은 상향 링크에서 슬롯 1과 공간채널 1을 할당받고, 하향링크에서는 슬롯 1과 공간채널 1을 할당받아 점유한다. 이를 위하여 TDD-TDMA-SDMA시스템은 사용자 단말과 데이터 및 시그널링(전력제어 신호, ACK/NAK신호 등)을 주고 받는다. As shown in FIG. 1, the TDD-TDMA-SDMA system divides uplink and downlink into the same number of slots, respectively, and then forms a plurality of spatial channels in each slot and allocates them to users. In this case, the TDD-TDMA-SDMA system allocates uplink and downlink symmetric radio resources in pairs. For example, user 1 is allocated slot 1 and spatial channel 1 in the uplink, and slot 1 in the downlink. And occupy spatial channel 1 by allocation. To this end, the TDD-TDMA-SDMA system exchanges data and signaling (power control signal, ACK / NAK signal, etc.) with the user terminal.

그런데, 종래의 TDD-TDMA-SDMA 시스템은 무선자원을 할당할 때 상하향 링크의 무선자원을 쌍으로 할당해 주기 때문에 만약 트래픽이 없는 사용자가 무선자원을 점유하는 상황이 발생할 수 있어 무선자원이 낭비되는 단점이 있었다. 즉, 상 하향링크중에서 어느 한 링크에만 데이터와 시그널링이 모두 존재하고 다른 한 링크에는 시그널링만 있는 경우에는 무선자원의 낭비가 심하다. However, since the conventional TDD-TDMA-SDMA system allocates radio resources of uplink and downlink when pairing radio resources, a situation in which a user without traffic may occupy radio resources may cause radio resources to be wasted. There was a downside. In other words, if both data and signaling exist in only one link of the downlink, and only signaling exists in the other link, radio resource is wasted.

예를들어, 사용자 1~8은 상하향 링크 모두에서 데이터와 시그널링을 갖지만 사용자 9는 상향 링크에만 데이터와 시그널링을 갖고 하향 링크에서는 단지 시그널링만 갖는다고 가정해 보자. 이 경우 하향링크에서 슬롯 3의 공간채널 3은 오직 시그널링(데이터에 비해 현저히 적은 양)만을 보내기 위하여 사용되므로 자원이 비효율적으로 사용되는 문제가 있다. For example, suppose that users 1-8 have data and signaling on both uplink and downlink, but user 9 has data and signaling only on the uplink and only signaling on the downlink. In this case, since spatial channel 3 of slot 3 is used only to send signaling (significantly smaller than data) in downlink, resources are inefficiently used.

따라서, 본 발명의 목적은 상하향링크에서 무선자원을 효율적으로 할당할 수 있는 무선통신 시스템의 무선자원 할당방법을 제공하는데 있다. Accordingly, an object of the present invention is to provide a radio resource allocation method of a radio communication system capable of efficiently allocating radio resources in uplink and downlink.

본 발명의 다른 목적은 데이터 및/또는 시그널링을 갖는 사용자를 구분하여 무선자원을 할당할 수 있는 무선통신 시스템의 무선자원 할당방법을 제공하는데 있다. Another object of the present invention is to provide a radio resource allocation method of a wireless communication system capable of allocating radio resources by distinguishing users having data and / or signaling.

상기와 같은 목적을 달성하기 위하여 본 발명에 따른 무선통신 시스템의 무선자원 할당방법은 상하향링크에서 데이터와 시그널링이 모드 있는 사용자와 시그널링만 있는 사용자를 구분하여 무선자원을 할당하는 것을 특징으로 한다.In order to achieve the above object, a radio resource allocation method of a wireless communication system according to the present invention is characterized by allocating radio resources by distinguishing a user who has only a signaling mode and a data and signaling mode in a downlink.

바람직하게, 상기 시그널링만 있는 사용자의 시그널링 신호는 특정 무선자원에만 한정되어 할당된다. Preferably, the signaling signal of the user having only the signaling is allocated only to a specific radio resource.

바람직하게, 상기 사용자의 시그널링 신호는 특정 공간채널의 타임슬롯을 시분할하여 할당되는 것을 특징으로 한다.Preferably, the signaling signal of the user is allocated by time division of a time slot of a specific spatial channel.

바람직하게, 상기 모든 사용자가 데이터와 시그널링을 상하향 링크에서 송수신할 경우 시그널링을 위해 할당된 무선자원을 일반 무선자원처럼 분할하여 사용한다. Preferably, when all the users transmit and receive data and signaling on the uplink, the radio resources allocated for signaling are divided and used as normal radio resources.

바람직하게, 상기 시그널링을 위해 할당된 무선자원은 타임슬롯인 것을 특징으로 한다. Preferably, the radio resource allocated for the signaling is characterized in that the time slot.

이하 본 발명의 바람직한 실시 예를 설명하면 다음과 같다Hereinafter, the preferred embodiment of the present invention will be described.

본 발명은 TDD-TDMA-SDMA방식을 기반으로 하는 무선 접속망 시스템에서 구현된다. 그러나, 본 발명은 다른 표준에 따라 동작하는 통신 시스템에도 적용되어질 수 있다. The present invention is implemented in a wireless access network system based on the TDD-TDMA-SDMA scheme. However, the present invention can also be applied to communication systems operating according to other standards.

본 발명은 TDD-TDMA-SDMA 시스템에서 자원을 할당할 때 상하향 링크의 자원을 쌍으로 할당할 때 데이터(트래픽) 없이 단지 시그널링만 보내는 사용자를 위한 채널을 따로 할당하고 나머지 무선 자원에는 데이터 사용자를 할당하는 방법을 제안한다. 이를 위하여 본 발명은 시그널링 신호만을 위한 무선자원을 따로 설정하고 나머지 자원은 상하향 링크에 대칭적으로 할당한다. According to the present invention, when allocating resources in a TDD-TDMA-SDMA system, when allocating resources of an uplink and downlink in a pair, a channel for a user who sends only signaling without data (traffic) is allocated separately and a data user is allocated to the remaining radio resources. Suggest how to. To this end, the present invention separately sets radio resources for signaling signals and allocates the remaining resources symmetrically to the uplink and downlink.

도 2는 본 발명에 따른 무선통신 시스템의 자원할당 방법을 나타낸 도면이다.2 is a diagram illustrating a resource allocation method of a wireless communication system according to the present invention.

도 2에 도시된 바와같이, TDD-TDMA-SDMA시스템은 상향링크에서 진한 바탕의 자원 즉, 슬롯 1 및 슬롯 2의 공간채널 1, 2 ,3 과 슬롯 3의 공간채널 1, 2을 데이터와 시그널링이 모두 있는 사용자에게 할당한다. 여기서, 상기 시그널링은 전력제어 및 ACK/NAK 등의 신호를 나타낸다. As shown in FIG. 2, the TDD-TDMA-SDMA system is configured to signal data and the spatial channel 1, 2, 3 of the slot 1 and the slot 2 and the spatial channels 1, 2 of the slot 3 and the deep background resources in uplink. Assign it to a user who has it all. Here, the signaling represents signals such as power control and ACK / NAK.

그리고, TDD-TDMA-SDMA시스템은 슬롯 3의 공간채널 3은 다시 시간 분할하여 시그널링만 있는 사용자에게 할당한다. 즉, 시그널링만 있는 사용자의 시그널링 신호는 특정 무선자원에만 한정되어 할당되며, 특히, 모든 사용자가 데이터와 시그널링을 상하향 링크에서 송수신할 경우에는 시그널링을 위해 할당된 무선자원은 일반 무선자원처럼 분할하여 사용될 수 있다. In addition, the TDD-TDMA-SDMA system divides the spatial channel 3 of the slot 3 by time division and assigns the user to only the signaling. That is, the signaling signal of a user having only signaling is assigned to only a specific radio resource, and in particular, when all users transmit and receive data and signaling on the uplink and downlink, the radio resource allocated for signaling is divided and used as a general radio resource. Can be.

예를들어, 도 1에 도시된 바와같이 사용자 1~3은 하향 링크에는 데이터와 시그널링이 있고 상향링크에는 시그널링만 존재하기 때문에 본 발명은 슬롯 3을 시분할하여 사용자 1~3이 상향링크의 슬롯 3의 공간채널 3에서 시그널링을 받도록 한다. 반면에, 사용자 4~8은 상하향 링크에서 모두 데이터와 시그널링을 주고 받기 때문에 대칭적으로 상하향 무선자원을 할당한다. 또한, 사용자 9~11은 상향 링크에만 데이터가 있기 때문에 상향링크의 슬롯 3의 공간채널 3에서 시그널링을 받는다. For example, as shown in FIG. 1, since users 1 to 3 have data and signaling on the downlink and only signaling on the uplink, the present invention time-divides slot 3 so that users 1 to 3 slot 3 on the uplink. Receive signaling on spatial channel 3. On the other hand, since users 4 to 8 exchange data and signaling on both uplink and downlink, uplink and downlink resources are symmetrically allocated. In addition, since the users 9 to 11 have data only in the uplink, they are signaled in the spatial channel 3 of the slot 3 of the uplink.

따라서, 상기와 같은 할당방법을 사용할 경우 본 발명은 더 많은 사용자를 수용할 수 있다. 즉, 종래의 방식대로 자원을 할당할 경우에는 도 1에 도시된 바와같이 최대 9명밖에 접속할 수 없었지만 도 2에서와 같이 11명까지 접속할 수 있게 되어 시스템용량을 확장시킬 수 있게 된다. Therefore, the present invention can accommodate more users when using the above allocation method. That is, in the case of allocating resources according to the conventional method, as shown in FIG. 1, only 9 persons can be connected, but as shown in FIG. 2, up to 11 persons can be connected, thereby expanding the system capacity.

상술한 바와같이, 본 발명은 TDD-TDMA-SDMA시스템에서 무선자원을 할당할 때 데이터와 시그널링을 모드 갖는 사용자와 시그널링만을 갖는 사용자를 구분하여 무선자원을 할당함으로써 상하향 링크의 무선자원을 효율적으로 할당함은 물론 시스템의 수용능력을 증대시킬 수 있는 효과가 있다. As described above, the present invention efficiently allocates radio resources of the uplink and downlink by allocating radio resources by dividing users having only data and signaling mode and users with signaling when allocating radio resources in a TDD-TDMA-SDMA system. Of course, there is an effect that can increase the capacity of the system.

그리고, 본 발명은 도면에 도시된 실시 예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시 예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다. In addition, although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary and will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. . Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

도 1은 종래의 무선통신 시스템의 무선자원 할당방법을 나타낸 도면. 1 is a view showing a radio resource allocation method of a conventional wireless communication system.

도 2는 본 발명에 따른 무선통신 시스템의 무선자원 할당방법을 나타낸 도면.2 is a view showing a radio resource allocation method of a wireless communication system according to the present invention.

Claims (5)

TDD-TDMA-SDMA방식을 기반으로 하는 무선통신 시스템에 있어서, In the wireless communication system based on the TDD-TDMA-SDMA method, 상하향링크에서 데이터와 시그널링이 모두 있는 사용자와 시그널링만 있는 사용자를 구분하여 무선자원을 할당하는 것을 특징으로 하는 무선자원 할당방법. A radio resource allocation method for allocating radio resources by distinguishing between a user who has both data and signaling and a user who has only signaling in uplink. 제1항에 있어서, 상기 시그널링만 있는 사용자의 시그널링 신호는 The method of claim 1, wherein the signaling signal of the user having only the signaling is 특정 무선자원에만 한정되어 할당되는 것을 특징으로 하는 무선자원 할당방법. A radio resource allocation method, characterized in that it is assigned only to a specific radio resource. 제2항에 있어서, 상기 사용자의 시그널링 신호는 The method of claim 2, wherein the signaling signal of the user 특정 공간채널의 타임슬롯을 시분할하여 할당되는 것을 특징으로 하는 무선자원 할당방법. A radio resource allocation method, characterized in that the time slots of a specific spatial channel are allocated by time division. 제1항에 있어서, 상기 모든 사용자가 데이터와 시그널링을 상하향 링크에서 송수신할 경우 시그널링을 위해 할당된 무선자원을 일반 무선자원처럼 분할하여 사용하는 것을 특징으로 하는 무선자원 할당방법. The method of claim 1, wherein when all the users transmit and receive data and signaling on the uplink and downlink, the radio resource allocated for signaling is divided and used as a general radio resource. 제4항에 있어서, 상기 시그널링을 위해 할당된 무선자원은 The method of claim 4, wherein the radio resource allocated for the signaling is 타임슬롯인 것을 특징으로 하는 무선자원 할당방법.Radio resource allocation method, characterized in that the time slot.
KR1020030094037A 2003-12-19 2003-12-19 Method for allocating radio resource in radio communication system KR20050063826A (en)

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