JP5171967B2 - A coexistence support method considering subchannel allocation in broadband wireless access systems - Google Patents

Description

  The present invention relates to multi-radio coexistence support for mobile terminals using a broadband wireless access system, and more particularly, to a method for improving the performance of a broadband wireless access system and other wireless communication systems.

  A broadband wireless access system based on the IEEE 802.16e system supports a sleep mode for minimizing power consumption of a mobile terminal. When there is no downlink traffic for a certain period of time, the terminal requests the base station to transition to the sleep mode through a sleep mode request (MOB_SLP-REQ). Then, the base station permits the terminal to enter the sleep mode through the sleep mode response (MOB_SLP-RSP).

  In the sleep mode, the operation of the mobile terminal is performed by repeating a sleep interval (Sleep Interval) and a listening interval (Listening Interval). IEEE 802.16e is used in the listening period, and another wireless communication such as Bluetooth or WiFi is used in the sleep period, thereby providing coexistence of a time sharing scheme.

  However, the total performance of the time-sharing method has a limit that it cannot exceed 1, and the performance is degraded due to the interruption of the transfer or reception operation that is in progress on the time boundary, that is, the fragmentation. Was sometimes invited.

  Accordingly, an object of the present invention is to provide a coexistence support method that considers subchannel allocation of terminals, which enables simultaneous use of WWAN radio communication and WPAN / WLAN radio communication, and as a result, improves coexistence performance. There is.

  Another object of the present invention is to provide a base that can support coexisting wireless communication by a method such as adjacent subcarrier permutation for a terminal to which a coexistence support method considering subchannel allocation is applied. The object is to provide a coexistence support method considering the subchannel allocation of stations.

  In order to achieve the above object, the coexistence support method considering subchannel allocation according to an embodiment of the present invention, after turning on the second wireless communication, transfers coexistence information and performs adjacent subcarrier permutation. This includes a step of requesting the base station to transfer coexistence information and requesting the base station to cancel adjacent subcarrier permutation when the second wireless communication is turned off.

  Preferably, in the adjacent subcarrier permutation, either the highest frequency band or the lowest frequency band is assigned to the terminal according to the bit value of the coexistence information. .

  Preferably, in the process of requesting the adjacent subcarrier permutation, a sleep mode request (MOB_SLP-REQ) message including coexistence information indicating band AMC allocation for the terminal is transferred from the terminal to the base station. be able to.

  Preferably, in the process of requesting cancellation of the adjacent subcarrier permutation, a sleep mode request (MOB_SLP-REQ) message including coexistence information requesting bandwidth PUSC allocation for the terminal is sent from the terminal to the base station. Can be transferred to.

  Also, the coexistence support method considering subchannel allocation according to another embodiment of the present invention provides a report response (request for bandwidth AMC allocation for the terminal) from the terminal in the process of requesting the adjacent subcarrier permutation. REP-RSP) messages can be transferred to the base station. Preferably, in the process of requesting cancellation of the adjacent subcarrier permutation, a report response (REP-RSP) message indicating bandwidth PUSC allocation for the terminal can be transferred from the terminal to the base station.

  Preferably, the process of requesting the adjacent subcarrier permutation may be performed in a Wimax active period.

  Preferably, the second wireless communication may be Bluetooth wireless communication.

  Also, a coexistence support method considering subchannel allocation according to another embodiment of the present invention transfers a registration request (REG-REQ) message including coexistence capability information from a terminal to a base station. When it is notified through the registration response (REG-RSP) message corresponding to the registration request (REG-REQ) message whether or not the coexistence mode can be supported, after the second wireless communication is turned on, the coexistence information is transferred. And requesting adjacent subcarrier permutation to the base station, and transferring the coexistence information and requesting the base station to cancel the adjacent subcarrier permutation when the second wireless communication is turned off. Preferably, the second wireless communication may be Bluetooth wireless communication.

  The coexistence support method considering subchannel allocation according to another embodiment of the present invention allocates a band AMC to the terminal when receiving coexistence information requesting adjacent subcarrier permutation from the terminal, and When coexistence information requesting cancellation of adjacent subcarrier permutation is received, a process of allocating PUSC to the terminal is included.

  Preferably, in the process of assigning the band AMC to the terminal, either the highest frequency band or the lowest frequency band can be assigned to the terminal according to the bit value of the coexistence information.

  Preferably, the coexistence information may be received through a sleep mode request (MOB_SLP-REQ) message.

  Preferably, the coexistence information may be received through a report response (REP-RSP) message.

In the embodiment of the present invention, the wireless broadband system is described as IEEE 802.16e, that is, WiMAX, but the coexistence support method considering subchannel allocation according to the embodiment of the present invention can be applied to any wireless broadband system. Can do.
For example, the present invention provides the following items.
(Item 1)
A method of supporting coexistence operation in a terminal that supports the coexistence mode of WiMAX and second wireless communication,
After turning on the second wireless communication, transferring coexistence information and requesting the adjacent subcarrier permutation from the base station;
When the second wireless communication is turned off, transferring coexistence information and requesting the base station to cancel adjacent subcarrier permutation;
Coexistence support method considering subchannel allocation.
(Item 2)
The adjacent subcarrier permutation is
The coexistence support method considering subchannel allocation according to item 1, wherein a subcarrier of either the highest frequency band or the lowest frequency band is allocated to the terminal according to the bit value of the coexistence information .
(Item 3)
The step of requesting the adjacent subcarrier permutation is as follows:
The subchannel allocation according to item 1, further comprising a step of transferring a sleep mode request (MOB_SLP-REQ) including coexistence information indicating band AMC allocation for the terminal from the terminal to the base station. Consideration of coexistence support method.
(Item 4)
The step of requesting the cancellation of the adjacent subcarrier permutation is as follows:
The subchannel according to item 1, comprising a step of transferring a sleep mode request (MOB_SLP-REQ) message including coexistence information requesting bandwidth PUSC allocation to the terminal from the terminal to the base station. Coexistence support method considering allocation.
(Item 5)
The step of requesting the adjacent subcarrier permutation is as follows:
The coexistence in consideration of subchannel allocation according to item 1, comprising a step of transferring a report response (REP-RSP) message requesting bandwidth AMC allocation to the terminal from the terminal to the base station. Support method.
(Item 6)
The step of requesting the cancellation of the adjacent subcarrier permutation is as follows:
The coexistence support in consideration of subchannel allocation according to item 1, comprising the step of transferring a report response (REP-RSP) message representing bandwidth PUSC allocation to the terminal from the terminal to the base station. Method.
(Item 7)
The coexistence support method considering subchannel allocation according to Item 1, wherein the step of requesting adjacent subcarrier permutation is performed in a WiMAX active section.
(Item 8)
A method of supporting coexistence operation in a terminal that supports the coexistence mode of WiMAX and second wireless communication,
Transferring a registration request (REG-REQ) message including coexistence capability information from the terminal to the base station;
When it is notified from the base station through a registration response (REG-RSP) message corresponding to the registration request (REG-REQ) message whether the coexistence mode can be supported, after turning on the second radio communication, Transferring coexistence information and requesting adjacent subcarrier permutation from the base station;
When the second wireless communication is turned off, transferring coexistence information and requesting the base station to cancel adjacent subcarrier permutation;
Coexistence support method considering subchannel allocation.
(Item 9)
Item 9. The coexistence support method considering subchannel allocation according to Item 8, wherein the second wireless communication is Bluetooth wireless communication.
(Item 10)
A method for supporting a coexistence operation of a terminal supporting a coexistence mode of WiMAX and second wireless communication in a base station,
Receiving coexistence information requesting adjacent subcarrier permutation from a terminal, allocating band AMC to the terminal;
When receiving coexistence information requesting cancellation of adjacent subcarrier permutation from the terminal, assigning PUSC to the terminal;
Coexistence support method considering subchannel allocation.
(Item 11)
The step of allocating bandwidth AMC to the terminal is as follows:
The subchannel allocation according to item 10, wherein the subchannel allocation according to item 10 is considered, wherein the subcarrier is assigned to either the highest frequency band or the lowest frequency band according to the bit value of the coexistence information. Coexistence support method.
(Item 12)
Item 11. The coexistence support method considering subchannel allocation according to Item 10, wherein the coexistence information is received through a sleep mode request (MOB_SLP-REQ) message.
(Item 13)
Item 11. The coexistence support method considering subchannel allocation according to Item 10, wherein the coexistence information is received through a report response (REP-RSP) message.

  According to the embodiments of the present invention, when using the sleep mode, it is possible to provide simultaneity between different wireless communications, and it is possible to improve the simultaneity between different wireless communications even when the sleep mode is not used. .

It is a figure which shows an example of the coexistence method of WiMAX and Bluetooth. 4 is a signal flow diagram illustrating a coexistence support method considering subchannel allocation according to an embodiment of the present invention. 7 is a signal flow diagram illustrating a coexistence support method considering subchannel allocation according to another embodiment of the present invention. 6 is a signal flowchart illustrating a coexistence support method considering subchannel allocation according to still another embodiment of the present invention. 6 is a signal flowchart illustrating a coexistence support method considering subchannel allocation according to still another embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the following embodiments of the present invention can be modified in various other forms, and the scope of the present invention is not limited to the following embodiments.

  The following embodiment is a combination of components and features of the present invention in a predetermined form. Each component or feature can be considered optional unless otherwise explicitly stated. Each component or feature may be implemented in a form that is not combined with other components or features. In addition, the embodiments of the present invention can be configured by combining some components and / or features. The order of operations described in the embodiments of the present invention can be changed. Some configurations or features of one embodiment may be included in another embodiment or may replace a corresponding configuration or feature of another embodiment.

  The specific terms in the following description are for facilitating the understanding of the present invention, and these specific terms can be variously modified without departing from the technical idea of the present invention.

  In the present specification, the embodiments of the present invention have been described mainly on the data transmission / reception relationship between the base station and the terminal. Here, the base station refers to a terminal node of a network that directly communicates with a terminal. The specific operation assumed to be performed by the base station in this document may be performed by an upper node of the base station in some cases.

  That is, in a network composed of a large number of network nodes including a base station, it is clear that various operations performed for communication with a terminal can be performed by a network node other than the base station or the base station. It is. 'Base station' can be replaced with terms such as a fixed station, Node B, eNode B (eNB), access point, and the like. In addition, 'terminal' can be replaced with terms such as UE (User Equipment), MS (Mobile Station), MSS (Mobile Subscriber Station).

  The following embodiments can be implemented by various means, for example, hardware, firmware, software, or a combination thereof.

  In the case of implementation by hardware, the present invention may include one or more ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing), DSPDs (digital signal processing), DSPDs (digital signal processing). (programmable gate arrays), a processor, a controller, a microcontroller, a microprocessor, and the like.

  When the operations and functions of the present invention are implemented by firmware or software, the present invention can be implemented in various forms including modules, procedures, functions, and the like. The software code can be stored in a memory unit and driven by a processor. The memory unit is provided inside or outside the processor, and can communicate with the processor by various known means.

  FIG. 1 is a diagram illustrating an example of a coexistence method of WiMAX and Bluetooth.

  The WiMAX frame can be collectively divided into an active period and an inactive period. The inactive section may be a sleep section in a sleep mode defined in the IEEE 802.16e standard, or may be a scanning section.

  In the embodiment of the present invention, the implementation method of the inactive section is not particularly limited. In general, a section in an inactive state in which WiMAX wireless communication is turned off is called an inactive section. The length of the inactive section can be zero. In the inactive period, another coexisting wireless communication such as WiFi or Bluetooth can be used instead of WiMAX.

  WiFi, Bluetooth and the like can coexist with the first wireless communication such as WiMAX in a time sharing method in an inactive period. In the active period, the first wireless communication can be turned on to transmit and receive data.

  Unlike the prior art, the second wireless communication such as Bluetooth in the inactive period is also used at the same time. Therefore, in the embodiment of the present invention, the second wireless communication such as Bluetooth in the transfer of the first wireless communication such as WiMAX. A method of using a subcarrier having the least interference with the subcarrier is provided.

  The adaptive modulation & coding (AMC) scheme is a cell, that is, a modulation scheme and a coding scheme for different data channels are determined according to a channel state between a base station and a mobile station. A data transfer method that improves the overall usage efficiency. Such an AMC system has a plurality of modulation systems and a plurality of coding systems, and modulates and codes a data channel signal by combining these modulation systems and coding systems. Each combination of these modulation schemes and coding schemes is called a modulation and coding scheme (MCS), and a plurality of MCSs from level 1 to level N can be defined by the number of MCSs. That is, the AMC scheme is a scheme that improves the overall system efficiency by adaptively determining the MCS level according to the channel state between the mobile station and the base station that are currently wirelessly connected.

  In order to increase the data transfer speed, the mobile Internet considers the state of each subchannel, distinguishes good channels from relatively poor channels, and assigns subchannels to each terminal as far as resources allow. A bandwidth AMC is used. When the band AMC is applied in this way, a terminal to which a resource configured with a channel in a good state is allocated is modulated to have a higher capacity, and thus high-speed data transfer is possible.

  In the band AMC, an AT (Access Terminal), which is a terminal, measures channel quality information (CQI), collects channel information of an operating subchannel, and based on this, collects subchannels in a good state. Therefore, the influence of surrounding noise and interference is reduced. Accordingly, a terminal to which band AMC is applied can increase a coding rate and can be transferred at a relatively high transfer rate.

  In the embodiment of the present invention, the band AMC is used to support the coexistence of the first (Primary) wireless communication such as WiMAX and the second (Secondary) wireless communication such as WiFi and Bluetooth.

  The UE requests the BS to use adjacent subcarrier permutation during uplink allocation. In addition, adjacent subcarrier permutation can be requested for coexistence at the time of downlink assignment, and at this time, the same procedure as at the time of uplink assignment can be performed. Hereinafter, only the case of uplink allocation will be described, but the technical protection scope of the present invention is not limited thereto.

  The adjacent subcarrier permutation request method can include various methods.

  First, when the inactive period is set as the sleep period, the terminal can transmit a sleep mode request (MOB_SLP-REQ) message to the base station to notify that the sleep mode for coexistence is entered. Coexistence information is included in the sleep mode request (MOB_SLP-REQ) message. This coexistence information indicates that the terminal requests adjacent subcarrier permutation for the purpose of coexistence. The message to which the coexistence information can be applied may be a sleep mode request (MOB_SLP-REQ) message, a sleep mode response (MOB_SLP-RSP) message, or the like when the inactive period is a sleep period. On the other hand, the coexistence information may be applied to any message when the inactive section is changed to another method or when there is no inactive section.

  The base station that received the coexistence information sets the corresponding bit in the sleep mode response (MOB_SLP-RSP) message, and uploads the subcarrier as far away as possible from the WLAN and WPAN in the 2.4 GHz ISM band during scheduling. Inform the terminal that it applies to link assignment.

  Table 1 shows an example of coexistence information.

表１を参照すると、共存情報のビット＃０及びビット＃１は、コロケーテッド（Ｃｏ−ｌｏｃａｔｅｄ）共存モードタイプを表し、ビット＃２は、スリープモードがコロケーテッド共存に対するＭＡＰ関連性に従うことを表し、ビット＃３は、コロケーテッド共存に対するアップリンク帯域ＡＭＣモードを表す。また、共存情報のビット＃４が０に設定されると、サブチャネルが最下位帯域に位置したり、または、ビット＃４が１に設定されると、サブチャネルが最上位帯域に位置する。

Referring to Table 1, bit # 0 and bit # 1 of the coexistence information represent a co-located coexistence mode type, and bit # 2 represents that the sleep mode follows MAP relevance for collocated coexistence. # 3 represents the uplink band AMC mode for collocated coexistence. If bit # 4 of the coexistence information is set to 0, the subchannel is located in the lowest band, or if bit # 4 is set to 1, the subchannel is located in the highest band.

  As another method for requesting adjacent subcarrier permutation, a new bit can be added to the report response (REP-RSP) message to inform the base station. That is, if Bluetooth wireless communication is turned on and coexistence support is required, the terminal transfers a report response (REP-RSP) message in a state in which there is no report request from the base station (unsolated).

  At this time, the parameters included in the report response (REP-RSP) message are collocated on the coexistence bit (bit # 4) or another reserved bit other than the basic report (basic report) part (any reserved bit). Co-located) Displays WPAN / WLAN coexistence. The base station that has received this report response (REP-RSP) message confirms that the allocation of the specific subcarrier is requested for the coexistence operation of the terminals, and performs scheduling reflecting this.

  Table 2 shows an example of the coexistence bit (bit # 4) included in the report response (REP-RSP) message.

移動端末が、ＷＬＡＮ、ＷＰＡＮなどの無線通信をターンオフ（ｔｕｒｎ ｏｆｆ）した後に、スリープモードから抜け出るか、または、移動端末がＡＭＣゾーン（ｚｏｎｅ）からＰＵＳＣ（Ｐａｒｔｉａｌ Ｕｓａｇｅ Ｓｕｂ−ｃｈａｎｎｅｌ）ゾーン（ｚｏｎｅ）への移動を要請すると、基地局は、以前の分散副搬送波パーミュテーション（ｄｉｓｔｒｉｂｕｔｅｄ ｓｕｂｃａｒｒｉｅｒ ｐｅｒｍｕｔａｔｉｏｎ）に再び戻る。

After the mobile terminal turns off wireless communication such as WLAN and WPAN, the mobile terminal exits the sleep mode, or the mobile terminal moves from the AMC zone (zone) to the PUSC (Partial Usage Sub-channel) zone (zone). , The base station returns to the previous distributed subcarrier permutation again.

  FIG. 2 is a signal flow diagram illustrating a coexistence support method considering subchannel allocation according to an embodiment of the present invention.

  When the mobile terminal uses coexisting wireless communication (eg, by turning on Bluetooth) (220), the mobile terminal transfers the coexistence information to the base station through the MAC message and transmits the adjacent subcarrier perm. (230). Even if the second wireless communication is any wireless communication other than Bluetooth, the following processes are performed in the same way.

  The base station that has received the coexistence information transfers a response to the coexistence information to the terminal (240).

  In addition, the base station uses AMC at the time of uplink and / or downlink allocation to the terminal (250).

  When the mobile terminal stops using coexisting wireless communication by turning off Bluetooth (260), the mobile terminal transfers coexistence information to the base station through a MAC message and performs adjacent subcarrier permutation. Request for release (270).

  When the base station confirms from the coexistence information that coexistence support is not necessary, the base station transfers a response to the coexistence information to the terminal (280), and returns to the previous permutation method (290). In FIG. 2, since the previous permutation method is PUSC, PUSC is assigned to the terminal.

  The mobile terminal can perform the following procedure in order to perform handover while using coexisting wireless communication.

  First, when the inactive section is set to the sleep mode, the use of the coexisting wireless communication is stopped at the same time as the cancellation of the sleep mode is requested. For example, it is possible to notify the wireless communication chip coexisting through the firmware via software, or to suspend the wireless communication chip coexisting via the hardware through the wire.

  When the sleep mode is not used, the use of wireless communication in which terminals coexist can be simply stopped. Similarly, this process can be performed in software or hardware through firmware. After the handover, the coexistence information and the report response (REP-RSP) message are transferred to the new base station again to request coexistence support.

  FIG. 3 is a signal flow diagram illustrating a coexistence support method considering subchannel allocation according to another embodiment of the present invention.

  When the mobile terminal uses coexisting wireless communication by turning on Bluetooth or the like (320), the mobile terminal requests coexistence support from the base station through a report response (REP-RSP) message (330). This coexistence information is included in the Report Response (REP-RSP) message in the form of a Co-located WPAN / WLAN coexistence field. In FIG. 3, when this field is 1, it indicates a request for adjacent subcarrier permutation, and when this field is 0, it indicates a request cancellation of adjacent subcarrier permutation. The following process is performed in the same way regardless of whether the second wireless communication is any wireless communication other than Bluetooth.

  The base station that has received the report response (REP-RSP) message uses the AMC when assigning uplink and / or downlink to the terminal (350).

  When the mobile terminal does not use coexisting wireless communication by turning off Bluetooth or the like (360), the mobile terminal transfers the coexistence information to the base station through a report response (REP-RSP) message. A request to cancel the mutation is made (370).

  When the base station confirms from the report response (REP-RSP) message that coexistence support is not required, the base station returns to the previous permutation scheme (390). In FIG. 3, since the previous permutation method is PUSC, PUSC is allocated to the terminal.

  FIG. 4 is a signal flow diagram illustrating a coexistence support method considering subchannel allocation according to still another embodiment of the present invention.

  The mobile terminal can inform the base station that it has the capability to support co-located coexistence that allows different wireless communications to be used in the same time zone. For this purpose, new information in the form of TLV (Type Length Value), that is, coexistence capability information is used. In addition, the base station can transfer the coexistence capability information to the mobile terminal to inform that the collocated coexistence can be supported. An example of a message for transferring the coexistence capability information may include a registration request (REG-REQ) message and a registration response (REG-RSP) message.

  Table 3 shows an example of coexistence capability information.

表３を参照すると、共存性能情報のビット＃０及びビット＃１は、ＰＳＣベースのコロケーテッド（Ｃｏ−ｌｏｃａｔｅｄ）共存モードを表し、ビット＃２は、スリープモードがＰＳＣベースのコロケーテッド共存に対するＭＡＰ関連性に従うことを表す。また、共存性能情報のビット＃３は、ＰＳＣベースのコロケーテッド共存に対するアップリンク帯域ＡＭＣモードを表す。

Referring to Table 3, bit # 0 and bit # 1 of the coexistence performance information represent a PSC-based co-located coexistence mode, and bit # 2 represents a MAP relevance for collocated coexistence with a sleep mode of PSC. Represents obeying Also, bit # 3 of the coexistence performance information represents an uplink band AMC mode for PSC-based collocated coexistence.

  In FIG. 4, the mobile terminal includes coexistence capability information in a registration request (REG-REQ) message in the process of registering with the base station to notify that the terminal has the capability to support collocated coexistence (411).

  The base station notifies the terminal that collocated coexistence can be supported through a registration response (REG-RSP) message (412).

  When the mobile terminal uses coexisting wireless communication by turning on Bluetooth or the like (420), the mobile terminal transfers coexistence information to the base station through a MAC message and requests adjacent subcarrier permutation. (430).

  The base station that has received the coexistence information transfers a response to the coexistence information to the terminal (440). Also, the base station uses AMC when assigning uplink and / or downlink to the terminal (450).

  When the mobile terminal stops using coexisting wireless communication by turning off Bluetooth (460), it transmits coexistence information to the base station through a MAC message and requests cancellation of adjacent subcarrier permutation. (470).

  When the base station confirms from the coexistence information that coexistence support is not necessary, the base station transfers a response to the coexistence information to the terminal (480) and returns to the previous permutation method (490).

  FIG. 5 is a signal flow diagram illustrating a coexistence support method considering subchannel allocation according to still another embodiment of the present invention.

  In FIG. 5, in the process of registering with the base station, the mobile terminal notifies that the terminal has the capability to support collocated coexistence by including coexistence capability information in the registration request (REG-REQ) message (511). .

  The base station notifies the terminal that the collocated coexistence can be supported through a registration response (REG-RSP) message (512).

  When the mobile terminal uses coexisting wireless communication by turning on Bluetooth or the like (520), the mobile terminal requests coexistence support from the base station through a report response (REP-RSP) message (530).

  The base station that receives the report response (REP-RSP) message uses the AMC when assigning uplink and / or downlink to the terminal (550).

  When the mobile terminal does not use coexisting wireless communication by turning off Bluetooth (560), the mobile terminal transfers the coexistence information to the base station through a report response (REP-RSP) message, and the adjacent subcarrier par A request to cancel the mutation is made (570).

  When the base station confirms from the report response (REP-RSP) message that coexistence support is not required, the base station returns to the previous permutation scheme (590).

  In the above description, the method of requesting the coexistence support from the mobile station by using the new information of the TLV form and the new bit of the bandwidth AMC message has been described. Coexistence support method, that is, coexistence support using the band AMC can be requested.

  Embodiments of the present invention enable simultaneous WWAN and WPAN / WLAN radio communications by adjusting the subcarrier permutation used during uplink and / or downlink transmission in a broadband radio system such as IEEE 802.16e. Can be used, and as a result, the coexistence performance can be improved.

  Although the present invention has been described with reference to the embodiments shown in the drawings, this is illustrative and various modifications can be made to these embodiments by those having ordinary skill in the art. It is clear that there is. Needless to say, such modifications are also within the technical protection scope of the present invention. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

  The present invention enables simultaneous use of WWAN wireless communication such as IEEE 802.16e and WPAN / WLAN wireless communication such as Bluetooth and WiFi, thereby improving coexistence performance. It can be applied to devices such as stations and terminals.

As apparent from the above, embodiments of the present invention, various wireless access systems, for ^{example, 3GPP (3 rd Generation Partnership Project} ), 3GPP2 , and / or IEEE (Institute of Electrical and Electronic Engineers ) 802. It can be applied to xx systems. The embodiments of the present invention are not limited to these various wireless connection systems, but can be applied to any technical field formed by application of various wireless connection systems. The embodiments of the present invention relate to a method for improving the performance of a broadband wireless access system and other wireless communication systems, such as a WPAN wireless communication system based on the IEEE 802.15 standard, an IEEE 802.11 standard (e.g., WiFi). Etc.) and a WiMAX wireless communication system based on the IEEE 802.16 standard.

Claims (12)

A method for supporting coexistence of first wireless communication and second wireless communication in a broadband wireless connection system,
The terminal transmits a sleep mode request (MOB_SLP-REQ) message including first coexistence information for requesting band adaptive modulation and coating (band AMC) for adjacent subchannel permutation to the base station;
Receiving a sleep mode response (MOB_SLP-RSP) message including second coexistence information from the base station as a response to the sleep request message;
Coexistence support methods including   2. The coexistence support method according to claim 1, wherein the adjacent subchannel permutation is performed so that a subchannel of a highest frequency band or a lowest frequency band is allocated to the terminal.   The coexistence support method according to claim 1, further comprising a step of activating the second wireless communication according to the second coexistence information. Transferring a registration request message including coexistence capability information to the base station;
Receiving a registration response message including information on whether or not the coexistence mode can be supported from the base station as a response to the registration request message;
The coexistence support method according to claim 1, further comprising:   When the second radio communication is deactivated, a sleep mode request message including third coexistence information for requesting subcarrier partial use (PUSC) allocation to the terminal is transferred to the base station, and the adjacent subchannel is transmitted. The coexistence support method according to claim 3, further comprising a step of requesting cancellation of permutation. The first wireless communication is a WiMAX system;
The method of claim 5, wherein the step of transferring the sleep mode request message including the third coexistence information is performed in a WiMAX active period. A method for supporting coexistence of first wireless communication and second wireless communication in a broadband wireless connection system,
A base station receiving a sleep mode request message including first coexistence information for requesting band adaptive modulation and coding (band AMC) from a terminal;
Assigning subchannels of adjacent channel bands to the terminal;
Coexistence support methods including Allocating the subchannel comprises:
8. The coexistence support method according to claim 7, wherein the coexistence support method is performed so as to assign the highest frequency band or the lowest frequency band to the terminal. The coexistence support method according to claim 7 , further comprising a step of transferring a sleep mode response message including second coexistence information to the terminal as a response to the sleep mode request message. Receiving a registration request message including coexistence capability information from the terminal;
Transferring a registration response message including information on whether coexistence mode can be supported or not to the terminal as a response to the registration request message;
The coexistence support method according to claim 7, further comprising: Receiving a sleep mode request message including third coexistence information for requesting partial use subcarrier (PUSC) allocation;
Releasing the adjacent subchannel permutation;
The coexistence support method according to claim 7 , further comprising: The first wireless communication is WiMax;
The method of claim 7, wherein receiving the sleep mode request message including the third coexistence information is performed in a WiMAX active period.

Images