JP5612075B2 - Network entry method in wireless communication system - Google Patents

Description

  The present invention relates to a wireless communication system, and more particularly to a method of entering a network in a wireless communication system.

  A method of entering a network in a wireless communication system according to the prior art will be described with reference to FIGS. FIG. 1 is a diagram illustrating a procedure for entering a network in a wireless communication system according to the related art.

  The procedure for entering the terminal into the network is performed by the terminal every time the terminal is turned on, loses its own cell, or moves to a new cell, and goes through 10 steps.

  As shown in FIG. 1, in order to make an initial connection by turning on the power, the terminal first searches for a connectable base station by scanning a downlink channel. At this time, the terminal initially does not have information regarding the topology or configuration of the network, and scans the frequencies of neighboring base stations one by one.

  Then, the terminal acquires system information for the downlink and uplink from the searched base station, and after completing the system settings, performs a ranging procedure with the searched base station. The terminal performs synchronization with the base station through a contention-based method in which an arbitrary CDMA ranging code is selected and transferred to the base station, thereby synchronizing the uplink.

  Until the synchronization is completed, the base station informs a variable value that the terminal must correct through a ranging response (RNG-RSP) message. While the variable value is corrected, the status of the ranging response message (status) is set to “continue”, and when the variable value correction is completed, the base station transfers the ranging response message whose state is set to “success”. .

  Then, after performing basic capability negotiation between the terminal and the base station and performing an authentication process, when the terminal and the base station are completely synchronized with each other, the terminal registers in the broadband network and receives a service.

  During the network entry procedure, the terminal and the base station may perform AAI_RNG-REQ / RSP (Advanced Air Interface Ranging Request / Response), AAI_SBC-REQ / RSP (AAI SS Basic Capability Request_ReQuestQ MAC (Medium Access Control) messages such as AAI Privacy Key Management Request / Response) and AAI_REG-REQ / RSP (AAI Registration Request / Response) messages are transmitted and received. In the related art, each time a terminal transfers a MAC message, the terminal requests uplink resource allocation for MAC message transfer.

  FIG. 2 is a diagram illustrating a bandwidth request procedure of a terminal in a wireless communication system according to the related art, and FIG. 3 is a diagram illustrating a bandwidth request procedure of the terminal in a future wireless communication system.

  As shown in FIG. 2, in order to request an uplink bandwidth, the UE selects one of the ranging codes from a code set for bandwidth request and transfers the selected code to the base station (S210). The base station that has successfully received the code transferred by the terminal allocates an uplink resource for transferring a bandwidth request (BW-REQ) message to the terminal (S220). At this time, after transmitting the code, the terminal retransmits the code if it does not receive an uplink resource until the activated timer expires. The timer may be a contention-based reservation timer or T3.

  The terminal transmits a bandwidth request message to the base station through the allocated uplink resource (S230). The base station that has received the bandwidth request message transferred by the terminal allocates uplink resources to the terminal (S240). The terminal transfers data through the allocated uplink resource (S250).

  In future wireless communication systems, the base station supports both a general 5-step method and a 3-step method, which is a fast approach method. The 5-step method may be used independently of the 3-step method, or may be used as a 3-step fall-back mode.

  Explaining the 3-step scheme, in FIG. 3, the terminal transmits a bandwidth request indicator and a quick access message that are arbitrarily selected or selected according to a certain rule to the base station. (S310). Here, the bandwidth request indicator may be a bandwidth request sequence (BR sequence) or a bandwidth request code (BR code), and the quick connection message may be an uplink bandwidth such as a terminal ID (Station ID) and a requested size. Includes width request information. The base station can transfer an acknowledgment to the terminal for the bandwidth request indicator transferred by each terminal.

  The base station that has successfully received the bandwidth request code and the quick connection message allocates uplink resources to the UE through an uplink basic allocation advanced MAP IE (UL basic assignment A-MAP IE) (S340). The terminal transfers data through the allocated uplink resource (S350). Here, the terminal may transfer additional uplink bandwidth request information.

  The 5-step method will be described. In FIG. 3, the terminal transmits an arbitrarily selected bandwidth request indicator (S310). The base station that has successfully received the bandwidth request indicator allocates an uplink resource for transferring the bandwidth request message to the terminal through a CDMA Allocation A-MAP IE (S320). The terminal transmits a bandwidth request message through the allocated uplink resource (S330). The base station that has received the bandwidth request message transferred by the terminal allocates uplink resources to the terminal through the uplink basic allocation advanced MAP IE (S340). The terminal transfers data through the allocated uplink resource (S350). At this time, the terminal may transfer additional uplink bandwidth request information.

  According to the related art, since the terminal requests the base station to allocate an uplink resource for transferring the MAC message every time the MAC message is transferred while entering the network, there is a delay in entering the network. there were.

  As described above, the conventional technique has a problem in that a delay occurs in network entry because the base station requests uplink resource allocation for MAC message transfer every time a terminal transfers a MAC message. .

  An object of the present invention is to provide a network entry method capable of preventing a delay.

  The technical problem to be achieved by the present invention is not limited to the technical problem described above, and other technical problems not mentioned can be obtained from the following description based on the general knowledge in the technical field to which the present invention belongs. It will be clear to those who have it.

  In order to achieve the above object, in a wireless network communication method according to an aspect of the present invention, in a method for entering a network of a terminal, even if the terminal does not request a bandwidth, an uplink bandwidth for a MAC message transfer by a base station Receiving an advanced air interface ranging response (AAI_RNG-RSP) message including an unsolicited bandwidth indicator indicating that a bandwidth is allocated to the terminal from the base station; -AA-MAP IE (advance MAP information element) during a predetermined time after receiving the RSP message. Monitor.

  Here, an uplink bandwidth is allocated to the terminal within the predetermined time after receiving the AAI_RNG-RSP message, and the terminal transfers a MAC message to the base station through the allocated bandwidth. To do.

Further, the terminal receives a fraud confirmation response to the MAC message, and an uplink bandwidth is allocated within the predetermined time after the fraud confirmation response is received,
Retransmit the MAC message to the base station through the allocated bandwidth.

  In addition, when the allocated bandwidth is insufficient to transfer the MAC message, the terminal requests additional bandwidth while transferring a part of the MAC message through the allocated bandwidth. .

  Further, the terminal may make a contention-based bandwidth request if no bandwidth is allocated within the predetermined time.

  In order to achieve the above object, according to the wireless communication system according to one aspect of the present invention, in the base station network entry support method, even if the terminal does not make a bandwidth request, the base station can increase the MAC message transfer. Forwards a ranging response (advanced air interface ranging response, AAI_RNG-RSP) message including an unsolicited bandwidth indicator indicating allocation of link bandwidth to the terminal; An uplink bandwidth is allocated to the terminal within a predetermined time after transferring the AAI_RNG-RSP message.

  Here, the base station may receive a MAC message from the terminal through the allocated bandwidth.

If the base station cannot receive a MAC message from the terminal through the allocated bandwidth, the base station transfers a fraud confirmation response to the MAC message and within the predetermined time from the time corresponding to the allocated bandwidth , An uplink bandwidth for retransmission of the MAC message can be allocated to the terminal.
(Item 1)
A method for entering a network of a terminal in a wireless communication system, comprising:
Ranging including an unsolicited bandwidth indicator indicating that a base station allocates an uplink bandwidth for MAC message transfer to the terminal even if the terminal does not request bandwidth Receiving a response (advanced air interface ranging response, AAI_RNG-RSP) message from the base station;
Monitoring an A-A-MAP IE (advance MAP information element) during a predetermined time after receiving the AAI_RNG-RSP message;
Including a network approach method.
(Item 2)
Uplink bandwidth is allocated within the predetermined time after receiving the AAI_RNG-RSP message,
Forwarding a MAC message to the base station through the allocated bandwidth;
The network approach method according to item 1, further comprising:
(Item 3)
Receiving a fraud confirmation response to the MAC message;
Within the predetermined time after receiving the fraud confirmation response, uplink bandwidth is allocated,
Retransmitting the MAC message to the base station through the allocated bandwidth;
The network approach method according to item 2, further comprising:
(Item 4)
The transfer is
When the allocated bandwidth is insufficient to transfer the MAC message, the additional bandwidth is requested while transferring a part of the MAC message through the allocated bandwidth. Item 3. The network entry method according to item 2.
(Item 5)
The network ingress method according to item 1, further comprising: making a contention based bandwidth request if no bandwidth is allocated within the predetermined time.
(Item 6)
A base station network entry support method in a wireless communication system, comprising:
Ranging including an unsolicited bandwidth indicator indicating that the base station allocates an uplink bandwidth for MAC message transfer to the terminal even if the terminal does not request bandwidth A response (advanced air interface ranging response, AAI_RNG-RSP) message is forwarded to the terminal;
Allocating uplink bandwidth to the terminal within a predetermined time after transferring the AAI_RNG-RSP message;
Including a network entry support method.
(Item 7)
The network entry support method according to item 6, further comprising receiving a MAC message from the terminal through the allocated bandwidth.
(Item 8)
If a MAC message cannot be received from the terminal through the allocated bandwidth, a fraud confirmation response to the MAC message is transferred,
Allocating an uplink bandwidth for retransmission of the MAC message to the terminal within the predetermined time from a time corresponding to the allocated bandwidth;
The network entry support method according to item 6, further comprising:

  According to the embodiment of the present invention, the base station allocates a bandwidth for transferring the MAC message of the terminal to the terminal without being requested from the terminal, thereby preventing a delay when the terminal enters the network.

  The effects obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned are apparent to those having ordinary knowledge in the technical field to which the present invention belongs from the following description. It will be.

It is a figure which shows a network approach procedure in the radio | wireless communications system which concerns on a prior art. It is a figure which shows the bandwidth request | requirement procedure of a terminal in the radio | wireless communications system which concerns on a prior art. It is a figure which shows the bandwidth request | requirement procedure of a terminal in a future radio | wireless communications system. It is a figure which shows the network approach method which concerns on a 1st Example. When retransmitting a MAC message, it is a figure which shows the network approach method which concerns on a 1st Example. It is a figure which shows the network approach method which concerns on a 2nd Example. It is a figure which shows the network approach method which concerns on 3rd Example of this invention. It is a figure which shows the network approach method which concerns on a 4th Example.

  Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily carry out. However, the present invention can be embodied in various other forms and is not limited to the embodiments described here. In the drawings, in order to clearly describe the present invention, parts not related to the description are omitted, and like parts are denoted by like reference numerals throughout the specification.

  Throughout the specification, if a part “includes” a component, this does not mean that the other component is excluded, unless expressly stated otherwise, may include another component. It means that it is possible. In addition, terms such as “... part”, “... machine”, “module” described in the specification mean a unit for processing at least one function or operation, and this means hardware, software, or hardware. Can be realized by combining hardware and software.

  First, a network approach method according to the first embodiment of the present invention will be described with reference to FIGS.

  FIG. 4 is a diagram illustrating a network entry method according to the first embodiment, and FIG. 5 is a diagram illustrating a network entry method according to the first embodiment when a MAC message is retransmitted.

  As shown in FIG. 4, the terminal finds a base station by receiving an advanced preamble (A-Preamble) from the base station, matches downlink synchronization (S401), and then receives basic parameters through a superframe header. (S402). Then, the terminal synchronizes uplink synchronization with the base station through the initial ranging procedure (S403, S404).

  The terminal forwards an advanced air interface ranging request (hereinafter referred to as “AAI_RNG-REQ”) message to the base station (S405), and the base station receives an unsolicited bandwidth indicator. A ranging response (advanced air interface ranging response; hereinafter referred to as “AAI_RNG-RSP”) message is transferred to the terminal (S406). Here, the unsolicited bandwidth indicator indicates that the base station allocates an uplink bandwidth for MAC message transfer to the terminal even though the terminal does not request bandwidth. That is, when the base station forwards the AAI_RNG-RSP message to the terminal including the unsolicited bandwidth indicator, the terminal forwards the MAC message even if not requested by the terminal during network entry. This refers to notifying the terminal that uplink bandwidth is allocated as much as possible.

  A terminal that has received an AAI_RNG-RSP message including an unsolicited bandwidth indicator receives an AAI_RNG-RSP message and receives an A-A-MAP IE (advance MAP information) for a predetermined time. element) and confirm uplink bandwidth allocation. If the UE receives the uplink bandwidth through the A-A-MAP IE within a predetermined time after receiving the AAI_RNG-RSP message (S407), the UE receives a basic capability request (subscriber station) through the allocated bandwidth. Basic capability request; hereinafter referred to as “AAI_SBC-REQ”) message is transferred to the base station (S408). Thereafter, the base station transfers a terminal basic capability response (hereinafter referred to as “AAI_SBC-RSP”) message to the terminal (S409).

  The terminal monitors the AA-MAP IE during a predetermined time after receiving the AAI_SBC-RSP message and confirms the uplink bandwidth allocation. When an uplink bandwidth is allocated through the AA-MAP IE within a predetermined time after receiving the AAI_SBC-RSP message (S410), the terminal transmits a private key management request ( The privacy key management request (hereinafter referred to as “PKM-REQ”) message is transferred to the base station (S411).

  Thereafter, until the network entry procedure is completed, the base station allocates a bandwidth for transferring the next request message of the terminal within a predetermined time after transferring the response message.

  The terminal makes a contention based bandwidth request if no bandwidth is allocated within a predetermined time. That is, one code is selected from the bandwidth request ranging code set and transferred to the base station.

  Then, if the allocated bandwidth is insufficient to transfer the MAC message, the terminal can make a bandwidth request by the piggyback method. That is, more bandwidth can be requested while forwarding the MAC message.

  If the base station cannot successfully receive the MAC message transferred by the terminal, the terminal retransmits the MAC message. When the terminal retransmits the MAC message, a network entry method according to the first embodiment will be described with reference to FIG.

  As shown in FIG. 5, the terminal receives an advanced preamble (A-Preamble) from the base station, finds the base station, matches downlink synchronization (S501), and receives basic parameters through the superframe header (S502). . Then, the terminal matches uplink synchronization with the base station through initial ranging (S503, S504).

  The terminal transfers an AAI_RNG-REQ message to the base station (S505), and the base station transfers an AAI_RNG-RSP message including an unsolicited bandwidth indicator to the terminal (S506).

  The UE that has received the AAI_RNG-RSP message including the unsolicited bandwidth indicator monitors the AA-MAP IE for a predetermined time after receiving the ranging response message, and allocates the uplink bandwidth. Confirm. When an uplink bandwidth is allocated through the A-A-MAP IE within a predetermined time after receiving the AAI_RNG-RSP message (S507), the UE bases the AAI_SBC-REQ message through the allocated bandwidth. The data is transferred to the station (S508).

  At this time, if the base station cannot successfully receive the AAI_SBC-REQ message transferred by the terminal, the base station determines the predetermined time from the time corresponding to the bandwidth allocated to the terminal for transferring the AAI_SBC-REQ message. In step S509, a bandwidth for retransmission of the AAI_SBC-REQ message is allocated to the terminal. Then, the UE monitors the AA-MAP IE for a predetermined time after receiving the HARQ local negative acknowledgment (HARQ local NACK) for the AAI_SBC-REQ message, and confirms the uplink bandwidth allocation. . Then, when the uplink bandwidth is allocated, the terminal retransmits the AAI_SBC-REQ message to the base station through the allocated bandwidth (S510).

  Next, a network approach method according to the second embodiment of the present invention will be described with reference to FIG.

  The MAC message transferred by the terminal while entering the network has different fields to be omitted, so that the size of the transferred MAC message may be different. Nevertheless, if the base station allocates a certain amount of bandwidth to the terminal without requesting the terminal while entering the network, the bandwidth may be wasted.

  Therefore, in the second embodiment of the present invention, the base station forwards an AAI_RNG-RSP message including a bandwidth polling indicator to the base station, and a request from the terminal is received while entering the network. Even if not, the base station polls the terminal for the bandwidth for the bandwidth request message transfer. Then, the terminal transfers a bandwidth request message including the requested size to the base station.

  FIG. 6 is a diagram illustrating a network approach method according to the second embodiment.

  As shown in FIG. 6, the terminal receives the advanced preamble (A-Preamble) from the base station, finds the base station, matches downlink synchronization (S601), and receives the basic parameters through the superframe header (S602). . Then, the terminal matches uplink synchronization with the base station through initial ranging (S603, S604).

  The terminal transfers the AAI_RNG-REQ message to the base station (S605), and the base station transfers the AAI_RNG-RSP message including the bandwidth polling indicator to the terminal (S606).

  At this time, the bandwidth polling indicator indicates that the base station polls the terminal for the uplink bandwidth for transferring the bandwidth request message even if the terminal does not request the bandwidth. That is, when the base station includes the bandwidth polling indicator in the AAI_RNG-RSP message and transfers it to the terminal, the terminal can transfer the bandwidth request message even when there is no request from the terminal while entering the network. To inform the terminal that it will poll the uplink bandwidth.

  The terminal that has received the AAI_RNG-RSP message including the bandwidth polling indicator confirms uplink bandwidth allocation during a predetermined time after receiving the ranging response message. When an uplink bandwidth is allocated within a predetermined time after receiving the AAI_RNG-RSP message (S607), the terminal transfers a bandwidth request message to the base station through the allocated bandwidth (S608). At this time, the bandwidth request message includes the amount of bandwidth required by the terminal. Then, the base station allocates the bandwidth requested by the terminal to the terminal (S609), and the terminal transfers the AAI_SBC-REQ message to the base station through the allocated bandwidth (S610).

  Subsequently, the base station transfers the AAI_SBC-RSP message to the terminal (S611), and allocates bandwidth to the terminal within a predetermined time after transferring the AAI_SBC-RSP message (S612). Then, the terminal transmits a bandwidth request message including the requested size through the allocated bandwidth (S613), and the base station allocates the requested bandwidth to the terminal (S614).

  Then, the terminal transfers the AAI_PKM-REQ message to the base station through the allocated bandwidth (S615). At this time, if the base station fails to successfully receive the AAI_PKM-REQ message, the base station may receive the AAI_PKM-REQ message transfer within a predetermined time from the time corresponding to the bandwidth allocated to the terminal. A bandwidth for retransmitting the AAI_PKM-REQ message is allocated to the terminal (S616). Then, the terminal confirms the uplink bandwidth allocation during a predetermined time after receiving the fraud confirmation response (NACK) to the AAI_PKM-REQ message. When the uplink bandwidth is allocated, the terminal retransmits the AAI_PKM-REQ message to the base station through the allocated bandwidth (S617).

  Next, a network approach method according to the third embodiment of the present invention will be described with reference to FIG.

  According to the third embodiment of the present invention, the UE transmits a MAC message including an unsolicited bandwidth indicator and allocates an uplink bandwidth for the next MAC message transfer. To request. At this time, each time the terminal transmits the MAC message, the terminal may transfer an unsolicited bandwidth indicator, or may transmit an AAI_RNG-REQ including an unsolicited bandwidth indicator. During the network entry, the base station may be requested to allocate an uplink bandwidth for the transfer of all MAC messages. In the third embodiment of the present invention, a bandwidth request allocation timer (hereinafter referred to as “BR Grant Timer”) is used, and the MAC message transferred by the terminal until the BR Grant Timer expires. , The base station allocates an uplink bandwidth for retransmitting the MAC message to the terminal without a request from the terminal.

  FIG. 7 is a diagram illustrating a network approach method according to a third embodiment of the present invention.

  As shown in FIG. 7, the terminal transfers an RNG-REQ message including a bandwidth indicator that has not been requested to the base station (S701). The unsolicited bandwidth indicator instructs the base station to transfer the bandwidth for the next MAC message transfer to the terminal without a request from the terminal. At this time, the terminal may also notify the base station of information regarding the size of the next MAC message.

  Then, the base station transmits an RNG-RSP message including a response to the unsolicited bandwidth indicator and information on a time point at which the bandwidth is allocated to the terminal (S702). The response to the unsolicited bandwidth indicator is a response to whether the base station can allocate the bandwidth for transferring the SBC-REQ message without request from the terminal. The time of allocation may be a frame offset (offset) or subframe offset (offset) value from the time when the RNG-RSP message is transferred to the time when the bandwidth for SBC-REQ message transfer is allocated. The base station does not inform the terminal about the time when the bandwidth is allocated, the base station and the terminal know the predetermined time, and the base station transmits the RNG-RSP message to the terminal within the predetermined time after transferring the message. Bandwidth may be allocated for SBC-REQ message transfer.

  The base station allocates a bandwidth for transferring the SBC-REQ message to the terminal within the frame offset or a predetermined time after transferring the RNG-RSP message (S703), and starts the BR Grant Timer. The terminal also starts the BR Grant Timer when it receives the bandwidth for transferring the SBC-REQ message.

  The terminal transfers the SBC-REQ message to the base station through the allocated bandwidth (S704). However, if the base station cannot successfully receive the SBC-REQ message transferred by the terminal until the BR Grant Timer expires, the base station allocates uplink bandwidth for the SBC-REQ message retransmission to the terminal. (S705), the BR Grant Timer is started again. If the terminal recognizes from the confirmation response that the transfer of the SBC-REQ message has failed until the BR Grant Timer expires, the terminal confirms the allocation of the uplink bandwidth, and the requested bandwidth through the allocated bandwidth. The SBC-REQ message including the indicator is retransmitted (S706).

  When the base station successfully receives the SBC-REQ message, the base station stops the BR Grant Timer, and when the terminal recognizes that the base station has successfully received the SBC-REQ message from the confirmation response, the BR Grant Timer is also received. Cancel.

  Thereafter, the base station forwards an SBC-RSP message including a response to the unsolicited bandwidth indicator and information about the time when the bandwidth is allocated to the terminal (S707), and forwards the SBC-RSP message. After the frame offset, a bandwidth for transferring the PKM-REQ message is allocated to the terminal (S708), and the BR Grant Timer is started.

  The terminal transfers the PKM-REQ message through the allocated bandwidth (S709).

  The BR grant timer is applicable not only during network entry for the purpose of speeding up network entry, but also when requesting bandwidth for message transmission used for other purposes.

  When the BR grant timer is applied, it is not necessary to wait until the timer for receiving the conventional request message and the response message expires, and the terminal retransmits the message through the allocated bandwidth as soon as the BR grant timer expires. It can be performed.

  In addition, when BR grant timer is applied, when a local NACK message is received at the transmitting end, an unsolicited bandwidth indicator is immediately transmitted without having to wait until the timer for message transmission / reception confirmation is completed. So you can quickly prepare for message retransmission.

  Also, if a timer for HARQ retransmission is defined, the BR grant timer may be replaced with a timer for HARQ retransmission, and when the HARQ retransmission timer expires, the base station automatically Bandwidth can be allocated.

  Next, a network approach method according to the fourth embodiment of the present invention will be described with reference to FIG.

  In the fourth embodiment of the present invention, a case where an unsolicited bandwidth indicator and BR grant timer are used in the process of re-entering the network after the terminal has performed handover will be described.

  FIG. 8 is a diagram illustrating a network approach method according to the fourth embodiment.

  As shown in FIG. 8, the terminal transfers a handover request (hereinafter referred to as “HO-REQ”) message to the serving base station (S801), and the serving base station receives a handover response (handover response). Hereinafter referred to as “HO-RSP”), the message is transferred to the terminal (S802). Here, the HO-RSP message may include an action time. This is to inform the terminal that the base station transmits a fast ranging IE after the action time + T55 timer in order to give the terminal a non-contention based ranging opportunity.

  The terminal transfers a handover indication (HO-IND) message to the base station (S803), and receives a fast ranging IE from the base station (S804), starts a BR grant timer. The base station also forwards the fast ranging IE and starts the BR grant timer. Then, the terminal transfers the RNG-REQ message through the allocated bandwidth (S805). The RNG-REQ message includes an unsolicited bandwidth indicator.

  However, if the base station cannot successfully receive the RNG-REQ message until the BR grant timer expires, the base station allocates a bandwidth for retransmitting the RNG-REQ message to the terminal (S806). Then, the terminal retransmits the RNG-REQ message to the base station through the allocated bandwidth (S807).

  The base station that has successfully received the RNG-REQ message transmits an RNG-RSP message including a response to an unsolicited bandwidth indicator and information about a time point at which the bandwidth is allocated to the terminal (S808).

  The base station allocates a bandwidth for transferring the SBC-REQ message to the terminal (S809), and starts a BR grant timer. When the SBC-REQ message is successfully received from the terminal (S810), the BR grant timer is stopped and the SBC-RSP message is transferred to the terminal.

  Embodiments according to the present invention can be implemented by various means such as hardware, firmware, software, or a combination thereof. In the case of implementation by hardware, a network entry method according to an embodiment of the present invention includes one or more ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal signatures). (Programmable logic devices), FPGAs (field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.

  In the case of implementation by firmware or software, the network entry method according to an embodiment of the present invention may be in the form of a module, procedure, function, or the like that performs the function or operation described above. For example, the software code may be stored in a memory unit and driven by a processor. The memory unit is provided inside or outside the processor, and can exchange data with the processor by various known means.

  It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the technical spirit and essential features of the invention. Accordingly, the above detailed description should not be construed as limiting in any respect and should be considered as exemplary. The scope of the invention should be determined by reasonable analysis of the appended claims, and thus all modifications within the equivalent scope of the invention are included in the scope of the invention. It is obvious that claims which do not have an explicit citation relationship in the claims can be combined to constitute an embodiment, or can be included as new claims by amendment after application.

Claims (6)

A method for network entry at a terminal (MS) in a wireless communication system, comprising:
The method
Receiving an AAI_RNG-RSP (Advanced Air Interface Ranging Response) message including an unsolicited bandwidth allocation indicator from the base station (BS) ; and
If the unsolicited bandwidth allocation indicator indicates that the BS allocates uplink bandwidth to the MS without a request from the MS ,
Monitoring an A-MAP IE ( Advanced MAP Information Element ) for uplink bandwidth allocation for a predetermined time after receiving the AAI_RNG-RSP message ;
Forwarding an uplink signal to the BS through the uplink bandwidth when the MS confirms within the predetermined time based on the monitoring that the BS has allocated the uplink bandwidth; and ,
In a case where the BS is the MS that do not assign the uplink bandwidth based on the monitoring is confirmed within the predetermined time, looking contains to make a contention based bandwidth request,
The method wherein the predetermined period of time begins when the AAI_RNG-RSP message is received . The method of claim 1, further comprising that the resources of the allocated uplink bandwidth to transfer not sufficient for the transfer of data, the bandwidth request of piggyback to the BS.   The method of claim 1, wherein the predetermined time is a duration of a bandwidth request (BR) allocation time.   A terminal (MS) that enters a network in a wireless communication system,
  The MS is
  A receiver,
  A transmitter,
  With processor
  With
  The receiver is configured to receive an AAI_RNG-RSP (Advanced Air Interface Ranging Response) message including an unsolicited bandwidth allocation indicator from a base station (BS),
  If the unsolicited bandwidth allocation indicator indicates that the BS allocates uplink bandwidth to the MS without a request from the MS, the processor may perform a predetermined operation after receiving the AAI_RNG-RSP message. Configured to monitor A-MAP IE (Advanced MAP Information Element) for uplink bandwidth allocation over time,
  If the processor confirms in the predetermined time based on the monitoring that the BS has allocated the uplink bandwidth, the processor forwards an uplink signal to the BS through the uplink bandwidth Is further configured to control the transmitter to:
  The processor is further configured to make a contention based bandwidth request when the processor confirms within the predetermined time based on the monitoring that the BS is not allocating the uplink bandwidth And
  The terminal, wherein the predetermined time period starts when the AAI_RNG-RSP message is received.   The transmitter is further configured to forward a piggyback bandwidth request to the BS when the allocated uplink bandwidth resources are not sufficient for data transfer. 4 terminals.   The terminal of claim 4, wherein the predetermined time is a period of a bandwidth request (BR) allocation time.

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