WO2008074258A1 - Procédé d'appel de radiomessagerie, réseau sans fil, station de base et station de relais - Google Patents

Procédé d'appel de radiomessagerie, réseau sans fil, station de base et station de relais Download PDF

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Publication number
WO2008074258A1
WO2008074258A1 PCT/CN2007/071254 CN2007071254W WO2008074258A1 WO 2008074258 A1 WO2008074258 A1 WO 2008074258A1 CN 2007071254 W CN2007071254 W CN 2007071254W WO 2008074258 A1 WO2008074258 A1 WO 2008074258A1
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WIPO (PCT)
Prior art keywords
paging
relay station
terminal
base station
message
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Application number
PCT/CN2007/071254
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English (en)
Chinese (zh)
Inventor
Aimin Zhang
Zheng Shang
Jiang Li
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Huawei Technologies Co., Ltd.
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Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008074258A1 publication Critical patent/WO2008074258A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • Paging method wireless network, base station and relay station
  • the present invention relates to the field of wireless communications, and in particular, to a paging method, a wireless network, a base station, and a relay station. Background of the invention
  • the demand for broadband wireless communication grows, the demand for wireless bandwidth becomes larger and larger, so higher and higher carrier frequencies are used in new protocols and wireless communication systems, however, due to radio waves.
  • the attenuation increases with increasing frequency. Therefore, high carrier frequency is bound to face high attenuation.
  • the use of high carrier frequency limits the coverage of the base station.
  • the wireless communication signal strength is low in some areas due to path attenuation of electromagnetic waves or building occlusion, and the communication quality of mobile terminals located in these areas becomes poor.
  • a relay station In order to increase the coverage of the base station and improve the communication quality in a region with a lower signal strength, it is generally required to use a relay station to enhance the wireless communication signal between the base station and the mobile terminal. There is no need for wired transmission between the relay station and the base station, and communication only through the wireless link, so the network has the advantages of low cost and deployment of the single. Due to the particularity of some geographical environments (such as narrow areas), when using relay stations for forwarding, multiple relay stations can be cascaded for multi-hop transmission.
  • the structure of the multi-hop wireless communication system with relay station is shown in Figure 1.
  • the base station and the core network are connected by optical cable or cable.
  • the base station has limited coverage and cannot directly cover the mobile terminal.
  • the area of 1-4 is located, but these areas can be covered by relay stations 1 - 4.
  • the line link communicates with the base station, and the relay station 3 and the relay station 4 have no direct communication link with the base station, but are forwarded by the relay station 2.
  • the data transmission transmitted from the base station needs to go through 3 hops, the first hop is the base station to the relay station 2, the second hop is the relay station 2 to the relay station 3, and the third hop is the relay station 3 to the mobile terminal 3.
  • the relay station 2 and the relay station 3 are referred to as the first and second hop relay stations of the mobile terminal 3, respectively.
  • the base station or relay station that will serve the next hop relay station is called a service station, for example, the base station is the service station of the relay station 1 and the relay station 2, and the relay station 2 is the service station of the relay station 3 and the relay station 4. .
  • the base station and the relay station are regarded as nodes in the topology network, after the data transmission link is established, the service relay station of the relay station and its upper node may be referred to as the upstream node of the relay station, and the next hop node of the relay station A node that is up to the terminal is called a downstream node.
  • the above introduces the introduction of the relay station and its function.
  • the following describes the support of the wireless communication system for the terminal idle mode.
  • Providing support for the idle mode of the terminal is an important function of the mobile communication system.
  • the terminal does not need to be registered to a specific base station, no handover is required, and all normal operations are not required.
  • the idle mode provides a mechanism for the terminal to be periodically paged by the network side without being disconnected.
  • Providing support for the idle mode of the terminal can greatly save power consumption of the terminal and also save resources of the system.
  • the idle mode generally involves the following processes: the terminal enters the idle mode, the terminal performs location update, the network side paging terminal, and the terminal exits the idle mode. After the terminal ends the normal operation, it can enter the idle mode.
  • the location update is required to ensure that the network side can dynamically learn the status and location of the terminal;
  • the network side needs to initiate paging to the terminal, and the terminal is required to exit the idle mode.
  • the network can be re-entered and enter the normal mode.
  • the following is a global interoperability for Microwave access (Worldwide Interoperability for Microwave)
  • the Access the cylinder is called the "WiMAX" network, for example, the four processes of the terminal entering the idle mode, the terminal performing the location update, the base station paging terminal, and the terminal exiting the idle mode are specifically described.
  • the terminal enters the idle mode: As shown in FIG. 2, in step 201, the terminal sends a logout request (DREG-REQ) message to the serving base station, where the message includes a paging cycle, information that the idle mode needs to be reserved for, etc. It includes information such as the number of times the media access control (Medium Access Control, "MAC”) hash address is exceeded.
  • DREG-REQ logout request
  • MAC Media Access Control
  • the serving base station sends an access service network gateway (Access Service Network GateWay, called “ASN-GW”) / local paging controller (Paging Controller, called “PC” to the network side.
  • ASN-GW Access Service Network GateWay
  • PC personal paging controller
  • the "Data Path Function” (DSF) sends a data channel release request, which contains information such as the identifier (MSID) of the terminal and the base station identifier (BSID).
  • MSID the identifier
  • BSID base station identifier
  • the ASN-GW/PC/DPF on the network side responds to the data channel pin request sent by the base station, and sends a data channel release response.
  • steps 204 and 205 are entered, and the two steps have no fixed sequence relationship.
  • the serving base station after receiving the data channel release response, the serving base station sends a logout command (DREG-CMD) to the terminal, which includes parameters such as a paging parameter, an anchor paging controller identifier, and an idle mode reservation information.
  • the serving base station returns a data channel release acknowledgement.
  • DREG-CMD logout command
  • the terminal After receiving the logout command, the terminal enters idle mode.
  • the terminal performs location update:
  • a location update is required. Specifically, when the condition of the terminal location update is triggered, or when the network side notifies the user of the location update message, the location update process is required.
  • the trigger conditions for terminal location update include the following four cases: When the terminal enters a new paging area, the idle mode timer of the terminal expires, the terminal is shut down, and when the condition of the terminal location update of the terminal is triggered, the terminal location update process is as shown in FIG. 3: In step 301, the terminal synchronizes with the current state.
  • the base station sends a location update request, and the request is carried by a Ranging Request (RNG-REQ) message, which includes an anchor paging controller identifier.
  • RNG-REQ Ranging Request
  • the base station receiving the terminal location update request sends a location update request to the anchor paging controller of the terminal, where the terminal includes an identifier of the terminal, a base station identifier, and the like.
  • the anchor paging controller sends a location update response to the corresponding base station.
  • step 304 the base station generates location update response information, which is carried by a ranging response (RNG-RSP) message, including a location update status (success or failure), and if the location update is successful, includes paging information and other The necessary information.
  • step 305 the base station returns a location update confirmation to the anchor paging controller.
  • RNG-RSP ranging response
  • Network side paging terminal When the trigger condition is met, the anchor PC needs to send a paging advertisement (Paging Announce) to all base stations of the paging group where the terminal is currently located, to notify these base stations to send a paging broadcast message or stop paging.
  • the triggering condition for the anchor PC to send the paging announcement is one of the following: the data that needs to be sent to the terminal arrives; the network side needs to force the terminal to perform the location update; the network side needs to force the terminal to perform the network reentry; the anchor PC learns that the terminal has exited the idle Mode, notifying the relevant base station to stop paging.
  • each base station After receiving the paging announcement, each base station generates a paging message MOB_PAG-ADV message if the paging announcement is not a command to stop paging, and broadcasts it at the paging listening interval of the terminal.
  • the physical frames in which the paging messages are sent by the respective base stations may be different in time, as long as they are within the listening interval of the terminal.
  • the base station can send one or more paging messages to the same terminal. All paging messages sent during a paging interval are treated as one page, and the corresponding paging retries (Paging Retry Count) is decremented by one, except when the action code of the paging message is set to No Action, that is, When the paging message has no operation, the number of paging retries is not changed. When the number of paging retries is reduced to zero, the base station stops paging and considers that the terminal is unavailable (unavailable), but the base station does not need to report the information of the terminal to the PC, and the PC does not receive the report from the base station. The paging success message automatically assumes that the terminal cannot be obtained.
  • the terminal will send a page.
  • the terminal should end the idle mode in time.
  • the process of ending the idle mode is as shown in Figure 6.
  • the terminal sends a ranging request (RNG-REQ) message requesting re-access to the network.
  • the base station sends the network to the network side.
  • the ASN-GW/PC/DPF sends a request for information of the terminal, including necessary information such as an identifier of the terminal, a base station identifier, and the like. Then, in step 603, the ASN-GW/PC/DPF on the network side receives the request, generates a terminal information response, and sends the response to the corresponding base station, which includes the information of the terminal. Then, proceeding to step 604, after receiving the response, the base station sends a Ranging Response (RNG-RSP) message to the terminal to inform the terminal that the re-entry network is successful. Then, in steps 605-607, the base station negotiates with the network side to establish a data channel for the terminal.
  • RNG-RSP Ranging Response
  • the embodiments of the present invention provide a paging method, a wireless network, a base station, and a relay station, so that the terminal can be normally paged even if a relay station is set in the network.
  • a paging method comprising the following steps:
  • the base station When receiving the paging message for paging the terminal in the idle mode, the base station initiates paging within the coverage of the base station, and forwards the paging message to the lower relay station of the base station;
  • the relay station After receiving the paging message, the relay station initiates paging within the coverage of the relay station. If the relay station is not the last-level relay station, it continues to forward the paging message to the lower-level relay station of the relay station.
  • a wireless network includes at least one base station and at least one relay station; and the base station is configured to, when receiving a paging message for paging a terminal in an idle mode, Initiating paging within its own coverage and forwarding the paging message to its own lower relay station; the relay station is configured to initiate paging within its own coverage after receiving the paging message, if it is not itself The relay station continues to forward the paging message to its own lower relay station.
  • a base station comprising:
  • a first paging unit configured to page the terminal within the coverage of the base station when receiving the paging message for paging the terminal in the idle mode
  • a first sending unit configured to forward the received paging message to a subordinate relay station of the base station.
  • a relay station comprising:
  • a second paging unit configured to initiate a paging within the coverage of the relay station after receiving the paging message
  • a second sending unit configured to forward the received paging message to a lower relay station of the relay station when the relay station is not the last level relay station.
  • the base station when receiving the paging message of the idle mode terminal, the base station initiates paging within the coverage of the base station, and forwards the paging to the lower relay station.
  • the subordinate relay station After receiving the paging message, the subordinate relay station initiates paging within the coverage of the relay station, and forwards the paging message to the subordinate relay station, and delivers the paging message to the base station and the relay station. Both are paged internally to ensure that the terminal can successfully receive paging messages on the network side in any range.
  • FIG. 1 is a schematic diagram of a wireless communication system including a relay station in the prior art
  • 3 is a flow chart of a location update performed by a terminal in the prior art
  • 4 is a flow chart of a network side paging terminal in the prior art
  • FIG. 5 is a schematic diagram showing the relationship between paging parameters in the prior art
  • FIG. 7 is a flow chart of a paging method of a base station in a paging method according to a first embodiment of the present invention.
  • Figure 8 is a flow chart showing a paging method of a relay station in a paging method according to a first embodiment of the present invention
  • FIG. 9 is a flow chart of a paging method of a base station in a paging method according to a second embodiment of the present invention.
  • FIG. 10 is a flowchart of a paging method of a relay station in a paging method according to a second embodiment of the present invention.
  • FIG. 11 is a flow chart of a method for a terminal to enter an idle mode according to a third embodiment of the present invention.
  • Figure 12 is a flowchart of a method for terminal location update according to a fourth embodiment of the present invention
  • Figure 13 is a flow chart of a method for a terminal to exit an idle mode according to a fifth embodiment of the present invention. Mode for carrying out the invention
  • the base station When receiving the paging message of the idle mode terminal, the base station initiates paging within the coverage of the base station, and forwards the paging message to the lower relay station; after receiving the paging message, the lower relay station initiates within the coverage of the relay station. Paging, and forwarding the paging message to the subordinate relay station, and sending the paging to each other, so that the paging is performed within the coverage of the base station and the relay station, ensuring that the terminal can successfully receive the network side in any range. Page message.
  • the first embodiment of the present invention is described below. The present embodiment relates to a paging method, and FIG. 7 is a paging procedure of a base station.
  • step 701 when receiving the paging message of the terminal in the idle mode, the base station pages the terminal within the coverage of the base station, and broadcasts the paging message to all the relay stations below, and the maximum paging of the terminal. The number of times is reduced by 1.
  • the base station sends a paging message to the terminal in the paging listening time interval of the terminal, and the base station can send one or more paging messages during the listening time interval.
  • the base station or the relay station that sends the paging message returns a paging response (that is, the terminal returns a paging response to the base station within the coverage of the base station, The response is returned to the relay station within the coverage of the relay station, and the subordinate relay station of the base station reports the paging response to the base station when receiving the paging response of the terminal.
  • the paging response may be a location update request of the terminal, or a network re-entry request.
  • step 702 the base station waits for the paging response of the receiving terminal, and if the base station receives the paging response (including receiving from the terminal or receiving from the lower relay station) before the next terminal paging listening time interval arrives. Then, the process proceeds to step 706, otherwise, the process proceeds to step 703.
  • step 703 the base station determines whether the maximum paging number of the terminal is 0. If yes, the process proceeds to step 705; otherwise, the process proceeds to step 704, the base station reduces the maximum paging number of the terminal by 1, and monitors the next paging. The terminal is paged within the time interval, and then proceeds to step 702 where the base station continues to wait for the paging response of the receiving terminal.
  • step 705 when the maximum paging number of the terminal is 0, the base station still does not receive the paging response of the terminal, and then stops paging the terminal, and considers that the terminal cannot be obtained, and the process ends.
  • the terminal may be stopped and wait for a period of time, which may be the transmission time required by the relay station farthest from the base station to the base station. , that is, the maximum transmission time of each relay station. If, during this period of time, the terminal still does not receive the paging response of the terminal, it is finally determined that the terminal cannot obtain the terminal. ⁇
  • the base station receives the paging response of the terminal, sends the paging response to the PC, stops sending the paging message, and sends a stop paging message to the lower relay station of the base station, where the paging message is stopped.
  • the message includes a stop paging identifier, so that in the case where the terminal location has been determined, each relay station can stop paging in time, reduce unnecessary paging operations, and reduce the burden on the relay station.
  • the base station If the base station receives the paging response directly from the terminal, sending a stop paging message to all the relay stations of the lower level, and if the base station receives the paging response from the lower relay station, then to the subordinates other than the lower relay station The relay station sends the stop paging message.
  • the base station may also receive a stop paging message from the network side PC, and the base station needs to forward the stop paging message to its lower relay station.
  • the relay station When receiving the paging message of the base station or the upper relay station, the relay station proceeds to step 801, and pages the terminal within the coverage of the relay station, and decrements the maximum paging number of the terminal by one. If the relay station is not the last-level relay station, The paging message is forwarded to all of the relay stations below it.
  • the paging station sends a paging message to the terminal in the paging listening time interval of the terminal, and the base station can send one or more paging messages in the listening time interval.
  • the relay station waits for the paging response of the receiving terminal, and if the relay station receives the paging response of the terminal (including receiving from the terminal or receiving from the lower relay station) before the next terminal paging listening time interval arrives Then, the process proceeds to step 803, the relay station stops sending the paging message, reports the paging response to the upper relay station or the base station, and sends a stop paging message to the lower-level relay station, where the stop paging message is included in the stop paging message.
  • each relay station and the base station can stop paging in time, reduce unnecessary paging operations, and reduce the burden of the relay station, wherein if the relay station directly receives the paging response from the terminal, Sending a stop paging message to all of the relay stations below it, if the relay station receives the paging response from the lower relay station, then to other than the lower relay station
  • the lower-level relay station sends the stop paging message; if the stop paging message from the base station or the upper-level relay station is received, the process proceeds to step 804, the relay station stops sending the paging message, and forwards the stop paging message to the lower-level relay station; If neither the paging response of the terminal nor the stop paging message is received, then step 805 is entered.
  • step 805 the relay station determines whether the maximum paging number of the terminal is 0. If yes, the process proceeds to step 806, stopping paging the terminal, and ending the process; otherwise, proceeding to step 807, the relay station reduces the maximum paging number of the terminal. 1 and paging the terminal during the next paging listening time interval, and then proceeding to step 802, the relay station continues to wait for the paging response of the receiving terminal or the stop paging message of the base station.
  • the second embodiment is also related to a paging method, which is substantially the same as the first embodiment.
  • the difference is that, in the first embodiment, when the base station or the relay station receives the paging message, it immediately sends it to the lower-level relay station;
  • the paging listening time interval of the terminal is relatively short, and there is a relatively long spare time between the two paging listening time intervals. In these spare time, since the terminal does not monitor the paging channel, Therefore, the base station and the relay station cannot page the terminal during this time, and the first embodiment is further optimized for this.
  • the basic idea of optimization is as follows: If the base station or the relay station receives the paging message within the terminal paging listening interval and can page during this period, but sends the paging message to the lower relay station, the lower relay station is too late to find the The paging is performed during the listening interval, that is, even if the base station or the relay station forwards the paging message to the lower relay station, the lower relay station still needs to wait until the next paging listening time interval arrives, so that the paging message is sent.
  • the best practice of the base station or the relay station is to not forward the paging message to the subordinate relay station first, and first try to receive the paging response of the terminal before the next paging monitoring interval arrives.
  • the paging message is forwarded to the lower level, and if not received, the paging message is forwarded to the lower base station. Therefore, unnecessary paging messages are not sent, so that the lower relay station performs unnecessary paging, thereby reducing the burden on the lower relay station.
  • the relay station is a last-level relay station, that is, the relay station does not have any lower-level relay stations, there is no need to perform a corresponding paging message and stop forwarding of the paging message.
  • Fig. 9 shows the paging procedure of the base station in the present embodiment.
  • step 901 the base station receives a paging message from the PC.
  • the base station determines whether the paging message needs to be forwarded immediately, that is, if the paging message is forwarded to the lower-level relay station immediately, whether the lower-level relay station has time and the current most recent paging listening interval (such as the current positive).
  • the page message needs to be forwarded immediately, and the process proceeds to step 907. Otherwise, the paging message is not required to be forwarded immediately, and the process proceeds to step 903.
  • step 903 the base station pages the terminal within the coverage of the base station at the current most recent paging listening time interval, and decrements the maximum number of paging times of the terminal by one. Then proceed to step 905.
  • step 905 the base station waits for a preset duration that is less than or equal to a time difference between when the base station calls the terminal and when the next paging listening time interval comes.
  • step 906 the base station determines whether the paging response of the terminal is received. If yes, the process proceeds to step 914, the base station stops paging, and reports the received paging response to the PC; otherwise, proceeds to step 907.
  • step 907 the base station sets the number of pages to be paged in the paging message, and increments the number of pages that have been paged by one.
  • step 908 the base station sends the set paging message to the lower relay station.
  • step 909 the base station determines whether the maximum number of paging times of the terminal is 0. If yes, the process proceeds to step 912, otherwise, the process proceeds to step 910.
  • step 910 the base station decrements the maximum number of paging times of the terminal and pages the terminal during the next paging listening time interval.
  • step 911 the base station waits for the paging response of the receiving terminal. If the base station receives the paging response (including receiving from the terminal or receiving from the lower relay station) before the next terminal paging listening time interval arrives, the process proceeds to step 915. , otherwise, proceed to step 909.
  • step 912 the base station continues to wait for a period of time, which may be the transmission time required by the relay station farthest from the base station to the base station, that is, the maximum transmission time of each relay station.
  • step 913 the base station determines whether the paging response of the terminal is received within the period of time. If yes, the process proceeds to step 915. Otherwise, it is determined that the terminal cannot obtain the terminal, and the process ends.
  • the base station stops paging the terminal, reports the received paging response to the PC, and generates a stop paging message to be sent to the lower relay station, where the stop paging message includes stopping the paging identifier. If the base station receives the paging response directly from the terminal, sending a stop paging message to all of the lower relay stations, and if the base station receives the paging response from the lower relay station, then to other relay stations except the lower relay station. The stop paging message is sent.
  • the base station stops paging the terminal and forwards the stop paging message to its lower relay station.
  • Fig. 10 shows the paging procedure of the relay station in the present embodiment.
  • step 1001 the relay station receives a paging message from a superior relay station or base station. Then, proceeding to step 1002, the relay station obtains the number of times the terminal has been paged from the paging message, and determines the actual maximum paging number of the relay station according to the preset maximum paging number and the number of paging times. The preset maximum paging number of the terminal can be subtracted from the number of paging times, and the difference is used as the actual maximum paging number of the relay station.
  • the number of paging times is 0 by default, and the maximum number of paging times preset by the relay station is that the relay station can actually Paging the maximum number of paging times of the terminal; otherwise, the maximum number of times the relay station can actually page the terminal is the difference between the preset maximum paging number and the number of paging times.
  • the actual paging number of the terminal can be controlled within a preset range, and the actual paging number is prevented from exceeding the preset maximum paging number, so that the base station waits for the response of the terminal for a long time.
  • Step 1003 - Step 1015 is similar to step 902 - step 914, except that the operating entity in step 902 - step 914 is a base station, and when receiving the paging response, the base station reports the paging response to the PC, and step 1003 - The operating entity in step 1015 is a relay station, and the relay station responds to the base station upon receiving the paging response.
  • the relay station receives the paging response of the terminal, and the relay station stops sending the paging message, reports the paging response to the upper relay station or the base station, and sends a stop paging message to the lower relay station, and stops the paging message.
  • the call message includes a stop paging identifier, so that when the terminal location is determined, each relay station and the base station can stop paging in time, reduce unnecessary paging operations, and reduce the burden on the relay station.
  • the relay station receives the paging response directly from the terminal, it sends a stop paging message to all relay stations below it, and if the base station receives the paging response from the lower relay station, then to other relay stations except the lower relay station The stop paging message is sent.
  • the relay station before receiving the paging response from the base station or the upper relay station, the relay station stops paging the terminal and forwards the stop paging message to its lower relay station before the relay station receives the paging response from the terminal.
  • the original paging message needs to be modified, and the modified seek is performed.
  • the format of the call message is shown in Table 1.
  • the shaded portion in Table 1 is a change to the corresponding field of the MOB_PAG-ADV message defined in the IEEE 802.16e protocol.
  • the bit is obtained after the 24-bit CRC of the bit line, and the calculation is much
  • the third embodiment of the present invention relates to a method for a terminal to enter an idle mode.
  • the relay station forwards the logout request of the terminal and the data channel revocation response of the base station, as shown in FIG.
  • the terminal sends a logout request (DREG-REQ) message to the relay station, where the message includes a paging cycle, information that the idle mode needs to reserve, and the like, and may also include skipping the threshold of the MAC hash address, and the like. information.
  • DREG-REQ logout request
  • the relay station sends the logout request message to the upper base station. During this process, the relay station can repackage the logout request message.
  • the base station After receiving the message, the base station sends a data channel release request to the ASN-GW/PC/DPF on the network side, which includes information such as the identifier (MSID) and the base station identifier (BSID) of the terminal.
  • MSID the identifier
  • BSID base station identifier
  • the ASN-GW/PC/DPF responds to the data channel revocation request sent by the base station, and returns a data channel release response.
  • steps 1105 and 1107 are entered, and the two steps have no fixed sequence relationship.
  • step 1105 after receiving the data channel release response, the base station returns a logout command (DREG-CMD) to the relay station, including parameters such as paging parameters, anchor PC identification, idle mode reservation information, and then proceeds to step 1106.
  • DREG-CMD logout command
  • step 1106 the relay station returns the logout command to the terminal, so that the terminal can enter the idle mode after receiving the logout command.
  • the base station returns a data channel release acknowledgement to the ASN-GW/PC/DPF.
  • the number of relay stations to be forwarded may be one or plural.
  • the fourth embodiment of the present invention relates to a method for updating the location of an idle mode terminal.
  • the relay station forwards the location update request of the terminal and the location update response information of the base station, as shown in FIG.
  • step 1201 the terminal sends a location update request to the relay station, the request being carried by a ranging request (RNG-REQ) message, which includes the anchor PC identity.
  • RNG-REQ ranging request
  • the relay station sends the location update request to the upper base station. During this process, the relay station can repackage the location update request. Then, proceeding to step 1203, the base station receiving the terminal location update request sends a location update request to the anchor PC of the terminal, which includes necessary information such as the identifier of the terminal, the identifier of the base station, and the like.
  • the anchor PC sends a location update response to the corresponding base station.
  • the base station After receiving the location update response, the base station proceeds to steps 1205 and 1207, and the two steps have no fixed sequence relationship.
  • step 1205 the base station generates location update response information, which is carried by a ranging response (RNG-RSP) message, including a location update status (success or failure), and if the location update is successful, includes paging information and other The necessary information.
  • RNG-RSP ranging response
  • the base station transmits the location response information to the relay station, and proceeds to step 1206 where the location response message is returned by the relay station.
  • step 1207 the base station returns a location update confirmation to the anchor PC.
  • the number of relay stations to be forwarded may be one or more.
  • the fifth embodiment of the present invention relates to a method for a terminal to exit an idle mode.
  • a relay station forwards a ranging request (requesting network reentry) of the terminal and ranging response information of the base station, as shown in FIG.
  • step 1301 the terminal sends a ranging request (RNG-REQ) message to the relay station to request re-access to the network.
  • RNG-REQ ranging request
  • the relay station transmits the ranging request message to the base station.
  • the base station After receiving the request of the terminal to access the network, the base station sends a request for the information of the terminal to the ASN-GW/PC/DPF on the network side, including necessary information such as the identifier of the terminal, the identifier of the base station, and the like.
  • step 1304 after receiving the request, the ASN-GW/PC/DPF on the network side generates a terminal information response, and sends the response to the corresponding base station, which includes the information of the terminal. Then, proceeding to step 1305, after receiving the response, the base station sends a ranging response to the relay station.
  • the relay station returns a ranging response message to the terminal to inform the terminal that the reentry network is successful.
  • the base station negotiates with the network side to establish a data channel for the terminal.
  • the storage medium may be a ROM/RAM, a magnetic disk, an optical disk, or the like.
  • a sixth embodiment of the present invention relates to a wireless network, including at least one base station and at least one relay station, the base station further comprising: a first paging unit, configured to initiate a search within the coverage of the base station when receiving the paging message And a first sending unit, configured to forward the received paging message to a lower relay station of the base station.
  • the relay station further includes: a second paging unit, configured to: initiate a paging within the coverage of the relay station after receiving the paging message; and a second sending unit, configured to receive the relay station when the relay station is not the last-level relay station
  • the incoming paging message is forwarded to the lower relay station of the relay station.
  • the paging is performed within the coverage of the base station and the relay station, respectively, to ensure that the terminal can successfully receive the paging message on the network side in any range.
  • the first sending unit may directly forward the paging message to the next-level relay station after receiving the paging message; or, temporarily not forwarding the paging message, including the first paging control unit in the base station, if at the first After the paging unit does not receive the response message of the terminal within the preset time limit after paging the terminal, the first paging control unit instructs the first sending unit to forward the paging message to the lower relay station; otherwise, the first paging control unit The first transmitting unit is prohibited from forwarding the paging message to the lower relay station. Therefore, unnecessary paging messages are not sent, so that the lower relay station performs unnecessary paging, thereby reducing the burden on the lower relay station.
  • the second sending unit may directly forward the paging message to the next-level relay station after receiving the paging message, or temporarily not forward the paging message, and include the second paging control unit in the relay station, if After the second paging unit does not receive the response message of the terminal within the preset time limit after paging the terminal, the second paging control unit instructs the second sending unit to forward the paging message to the lower relay station; otherwise, the second paging The control unit prohibits the second transmitting unit from forwarding the paging message to the lower relay station.
  • the first sending unit and the second sending unit page the terminal during a paging listening time interval of the terminal.
  • the preset time limit is less than or equal to the time difference between the start of the paging terminal from the base station or the relay station and the arrival of the next paging listening time interval, so that the paging terminal of the lower relay station is not delayed.
  • the base station further includes: after receiving the paging response of the terminal, sending a stop paging message to the lower relay station of the base station, where the stop paging message includes a unit for stopping the paging identifier.
  • the relay station further includes: a unit that forwards the paging response to the upper relay station or the base station of the relay station after receiving the paging response of the terminal; and sends a stop paging message to the lower relay station of the relay station, where the stop paging message is included And stopping the paging identification unit; and, when receiving the stop paging message, if the relay station is not the last-level relay station, forwarding the unit for stopping the paging message to the lower-level relay station of the relay station. Therefore, once it is determined that the terminal receives the paging or paging timeout, the base station or the relay station immediately stops paging, reduces unnecessary paging operations, and saves network resources.
  • the first paging unit stops the paging terminal in one of the following situations: receiving a paging response from the lower relay station or the terminal; or the base station paging the terminal to reach the maximum paging number.
  • the second paging unit stops the paging terminal in one of the following situations: receiving a paging response from the lower relay station or the terminal; or receiving a stop paging message from the upper relay station or the base station; or the relay station paging the terminal to reach the maximum paging frequency.
  • the maximum number of paging times may be a preset maximum paging number, or the difference between the preset maximum paging number and the number of paging times, or according to a preset maximum
  • the number of pages and the number of pages have been determined using other algorithms. The latter can better ensure that the total number of paging times of the base station and the relay station does not exceed the preset threshold, so that the base station waits for the terminal paging response to take too long.
  • the base station when receiving the paging message of the idle mode terminal, the base station initiates paging within the coverage of the base station, and forwards the paging message to the lower relay station; After the paging message, the paging is initiated within the coverage of the relay station, and the paging message is forwarded to the subordinate relay station, and the paging message is sent in a stepwise manner and is respectively paged, so that the paging is performed within the coverage of the base station and the relay station. Ensure that the terminal can successfully receive paging messages on the network side in any range.
  • the base station or the relay station can directly send the paging message to the lower-level relay station, so as to reduce the time taken for the paging message to be sent, and speed up the paging message sent by the relay station; or, the base station
  • the relay station After receiving the paging message of the idle mode terminal, the relay station first initiates paging within the coverage of the base station or the relay station. If the response message of the terminal is not received within the preset time limit, the relay station sends a paging to the lower relay station. The message, so as to avoid issuing unnecessary paging messages, causes the lower relay station to perform unnecessary paging, reducing the burden on the lower relay station.
  • the relay station or the base station stops transmitting the paging message when receiving the location update or network re-entry request from the lower-level relay station or the terminal, or when the paging number reaches the maximum paging number: the relay station may also receive the relay station or the base station from the upper-level relay station or the base station. When the paging message is stopped, the paging message is stopped. Therefore, once it is determined that the terminal receives the paging or paging timeout, the base station or the relay station immediately stops paging, reduces unnecessary paging operations, and saves network resources.
  • the paging message sent by the base station or the relay station includes the number of times of paging, and the lower relay station determines the maximum paging number of the relay station according to the preset maximum paging number and the number of paging times, thereby ensuring the total searching of the base station and the relay station.
  • the number of calls does not exceed the preset threshold, so that the base station waits for the terminal to respond to the paging for too long.

Abstract

La présente invention concerne un procédé d'appel de radiomessagerie, un réseau sans fil, une station de base et une station de relais dans le champ de communication sans fil, qui permettent au terminal d'être appelé normalement par radiomessagerie lorsqu'il existe des stations de relais dans le réseau. Dans la présente invention, la station de base ou la station de relais commence à appeler par radiomessagerie dans sa propre zone de couverture et envoie le message de radiomessagerie niveau par niveau à réception du message de radiomessagerie d'un terminal en mode inactif. La station de base ou la station de relais peut envoyer le message de radiomessagerie à la station de relais de niveau inférieur après avoir reçu le message de radiomessagerie d'un terminal en mode inactif : elle peut aussi démarrer la radiomessagerie en premier dans la zone de couverture de la station de base ou de la station de relais, si elle ne reçoit pas le message de réponse dans une période de temps prédéterminée, elle enverra le message de radiomessagerie à la station de relais de niveau inférieur. La station de relais ou la station de base arrête d'envoyer le message de radiomessagerie lorsqu'elle a reçu une demande de mise à jour d'emplacement ou une demande de nouvel accès au réseau de la part de la station de relais de niveau inférieur ou de la part du terminal ou lorsque les délais de radiomessagerie ont atteint les temps de radiomessagerie maximaux ; la station de relais peut aussi arrêter d'envoyer le message de radiomessagerie à réception d'un message de radiomessagerie d'arrêt de la part de la station de relais ou de la station de base de niveau supérieur.
PCT/CN2007/071254 2006-12-18 2007-12-18 Procédé d'appel de radiomessagerie, réseau sans fil, station de base et station de relais WO2008074258A1 (fr)

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