WO2007072933A1 - Dispositif de terminal de communication, dispositif de commande de station de base et procede de communication mobile - Google Patents

Dispositif de terminal de communication, dispositif de commande de station de base et procede de communication mobile Download PDF

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Publication number
WO2007072933A1
WO2007072933A1 PCT/JP2006/325557 JP2006325557W WO2007072933A1 WO 2007072933 A1 WO2007072933 A1 WO 2007072933A1 JP 2006325557 W JP2006325557 W JP 2006325557W WO 2007072933 A1 WO2007072933 A1 WO 2007072933A1
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WO
WIPO (PCT)
Prior art keywords
channel
information report
communication terminal
communication
sectors
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Application number
PCT/JP2006/325557
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English (en)
Japanese (ja)
Inventor
Makoto Tomizu
Original Assignee
Kyocera Corporation
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Publication date
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Publication of WO2007072933A1 publication Critical patent/WO2007072933A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present invention includes a communication terminal configured to be a handoff candidate for each channel by transmitting a channel information report including the reception quality of a predetermined pilot signal, including the reception quality of the predetermined pilot signal.
  • a base station controller configured to be a handoff candidate for each channel using the channel information report, and a channel information report including the reception quality of a predetermined pilot signal by transmitting a channel information report as a handoff candidate for each channel.
  • the present invention relates to a mobile communication method.
  • cdma2000 - ⁇ -EV DO system has been developed as a high-speed wireless communication system (for example, JP 2002-300644 A).
  • a mobile communication system to which the "cdma2000 ⁇ -EV DO system" is applied includes a plurality of base stations (a base station that manages sector OC and a base station that manages sector ⁇ ). And a base station that manages sector ⁇ ), and is configured to control communication performed using a channel that is set between each sector ⁇ , ⁇ , ⁇ and communication terminal AT! And a base station controller PCF (Packet Control Function).
  • a base station controller PCF Packet Control Function
  • the communication terminal AT is configured to perform communication using a plurality of carriers (multicarrier) set with one or a plurality of sectors. Has been.
  • the base station control device PCF performs communication for one communication terminal AT. Since the number of sectors to be controlled increases, the load on the mobile communication system side increases.
  • an object of the present invention is to provide a communication terminal, a base station control device, and a mobile communication method that reduce the load on the mobile communication system side.
  • a first feature of the present invention is a communication terminal configured to be a handoff candidate for each channel by transmitting a channel information report including reception quality of a predetermined pilot signal.
  • each channel is configured to determine whether or not it should be a handoff candidate based on the reception quality of the pilot signal, and should be determined as a handoff candidate for a specific channel. If the number of sectors that can be channeled to the communication terminal exceeds the maximum number of communication sectors by using the specific channel as a handoff candidate, That is, the gist of the present invention is that it is configured so as not to transmit a channel information report as a handoff candidate and includes a channel information report transmission unit.
  • the channel information report transmitting unit determines that a specific channel should be a handoff candidate
  • the specific channel is set as a node-off candidate. If the number of sectors that can be set for the tail channel in the communication terminal exceeds the maximum number of communication sectors, the channel information report as a handoff candidate is not transmitted for the specific channel to be used. Therefore, it is possible to avoid that each communication terminal performs communication using a channel set with a sector having the maximum number of communication sectors or more.
  • the channel information report transmitting unit determines that the specific channel should be a handoff candidate and uses the specific channel. If the number of sectors that can be set in the channel at the communication terminal exceeds the maximum number of communication sectors by setting it as a node-off candidate, do not transmit the channel information report itself including the reception quality of the predetermined pilot signal. The channel information report for the specific channel as a handoff candidate may not be transmitted.
  • the channel information report transmission unit determines that a specific channel should be a handoff candidate
  • the specific channel is set as a node-off candidate. If the number of sectors that can be set in the channel at the communication terminal exceeds the maximum number of communication sectors, transmission is performed when a predetermined condition is met or at a predetermined cycle. By stopping the transmission of the channel information report that should have been made, it is possible to avoid making this specific channel a handoff candidate, and each communication terminal is set to a channel set up with a sector that exceeds the maximum number of communication sectors. It is possible to avoid communication using.
  • the channel information report transmission unit determines that the specific channel should be a handoff candidate, and sets the specific channel as a node off candidate.
  • the number of sectors that can be set in the communication terminal is equal to or greater than the maximum number of communication sectors, a channel information report whose contents are changed is transmitted, so that a channel that is a handoff candidate for the specific channel. Do not send information reports, configured to be.
  • the specific channel is set as a node-off candidate. If the number of sectors that can be set in the channel by the communication terminal exceeds the maximum number of communication sectors, in the channel information report to be transmitted, the pilot signal for the specific channel (the channel transmitted by the peripheral sector power) is transmitted.
  • the reception quality it is possible to avoid using a specific channel that is strong as a handoff candidate, and each communication terminal communicates using a channel set up with sectors that exceed the maximum number of communication sectors. Can be avoided.
  • a second feature of the present invention is that channel information reports including the reception quality of a predetermined pilot signal are used as handoff candidates for each channel set for the communication terminal.
  • a base station controller configured to receive a channel information report including the reception quality of the predetermined pilot signal, and a channel information report receiving unit configured to receive a channel information report and a specific channel.
  • the gist of the present invention is to include a channel allocation control unit configured so as not to allocate resources to the specific channel.
  • the channel allocation control unit power communication terminal power specific channel is Even when a channel information report is received as a candidate for turn-off, when the number of sectors that can be set in the communication terminal is greater than or equal to the maximum number of communication sectors by making such a specific channel a candidate for turn-off or turn-off. Is configured so that resources are not allocated to such specific channels, so that each communication terminal communicates using a channel set with sectors that exceed the maximum number of communication sectors. Can be avoided.
  • a third feature of the present invention is a mobile communication method in which a channel information report including reception quality of a predetermined pilot signal is transmitted to make a handoff candidate for each channel. Based on the reception quality of the pilot signal for the channel, it is determined whether or not to be a handoff candidate, and the handset candidate is determined as a handoff candidate for a specific channel at the communication terminal. If the number of sectors that can be set in the communication terminal is greater than or equal to the maximum number of communication sectors when the specific channel is determined to be a candidate and a candidate for off / off, the specific channel is determined.
  • the gist of the present invention is to include a step of not transmitting a channel information report as a handoff candidate.
  • a fourth feature of the present invention is a mobile communication method in which a channel information report including reception quality of a predetermined pilot signal is transmitted to make a handoff candidate for each channel.
  • a step of determining whether or not a channel should be a handoff candidate based on reception quality of a pilot signal, and a channel having a specific channel as a node-off candidate in the communication terminal A step of transmitting an information report, and when the base station controller receives a channel information report with the specific channel as a node-off candidate, and setting the specific channel as a node-off candidate. If the number of sectors for which a channel can be set in the communication terminal exceeds the maximum number of communication sectors, resources are allocated to the specific channel. And summarized in that a step that is not.
  • FIG. 1 is an overall configuration diagram of a general mobile communication system.
  • FIG. 2 is a functional block diagram of a communication terminal according to the first embodiment of the present invention.
  • FIG. 3 is a diagram showing an example of a TCA format used in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 4 is a sequence diagram showing a handoff candidate process in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 5 is a functional block diagram of a base station control apparatus according to a second embodiment of the present invention.
  • FIG. 6 is a sequence diagram showing a handoff candidate process in the mobile communication system according to the second embodiment of the present invention.
  • the configuration of the mobile communication system according to the first embodiment of the present invention will be described with reference to FIG. 1 to FIG.
  • the mobile communication system according to the present embodiment applies the “cdma2000 lx-EV DO system”, and the communication terminal AT uses a plurality of channels (multicarriers) set with one or a plurality of sectors. It is configured to communicate using.
  • the mobile communication system includes a plurality of base stations (a base station that manages sector oc, a base station that manages sector ⁇ , and a sector a base station that manages ⁇ ) and a base station control that is configured to control communication performed using channels set between each sector 13, ⁇ and the communication terminal AT.
  • PCF Packet Control Function
  • the base station is configured to control radio communication of communication terminals in a plurality of areas, and functions of the base station that control radio communication of communication terminals in each area (for example, an antenna or the like) is expressed as “sector”.
  • the base station control apparatus PCF is configured to control communication performed using a channel set between the communication terminal AT and each sector ⁇ ,
  • the base station controller PCF has a function of distributing data addressed to the communication terminal AT to the sectors ⁇ , ⁇ , and ⁇ .
  • the communication terminal AT includes a plurality of communication terminals set with one or a plurality of sectors. It is configured to communicate using multiple channels (multi-carrier). In the example of FIG. 1, the communication terminal AT is configured to perform communication using a channel set between sectors ⁇ , ⁇ , and ⁇ .
  • the communication terminal AT reports the channel information report (RU) including the reception quality (for example, reception strength, SIR, CIR, etc.) of a predetermined pilot signal to the base station controller PCF.
  • the reception quality for example, reception strength, SIR, CIR, etc.
  • the base station controller PCF configured to be a handoff candidate for each channel.
  • the channel information report is set between the communication terminal AT and the sector as the reception quality of a predetermined pilot signal, and the reception quality and power of the pilot signal for each channel are set.
  • the communication terminal is configured to include the reception quality of the pilot signal for the channels from the peripheral sectors of the AT!
  • the base station control apparatus PCF performs a node-off candidate process (for a specific channel) based on the reception quality of a predetermined pilot signal included in the channel information report transmitted from the communication terminal AT ( Resource allocation processing for specific channels).
  • the communication terminal AT may be a wireless communication terminal, a wireless module, or a card terminal as long as it is configured as described above. It may be.
  • the communication terminal AT includes a communication setting unit 11, a communication parameter storage unit 12, a data communication unit 13, a pilot signal monitoring unit 14, and a channel assignment.
  • the determination unit 15 and the channel information report transmission unit 16 are provided.
  • the communication setting unit 11 is configured to perform a traffic channel (TrCH) setting process for performing data communication (packet communication) performed by the communication terminal AT. Specifically, the communication setting unit 11 is configured to perform the traffic channel (TrCH) setting process by transmitting a “ConnectionRequest”! RU
  • the communication setting unit 11 is configured to acquire communication parameters (for example, a handoff candidate threshold value, the maximum number of simultaneous communication sectors, and the like) necessary for performing such data communication from the base station controller PCF. And [0031]
  • the communication setting unit 11 may be configured to acquire such communication parameters by "TCA: TrafficChannelAssignment".
  • FIG. 3 shows an example of the format of “TCA” used in the mobile communication system that works according to the present embodiment.
  • “MaxNumA” is an expanded field in “TCA”.
  • the maximum number of simultaneous communication sectors is set in PJ.
  • the communication setting unit 11 may be configured to acquire a powerful communication parameter at an arbitrary timing.
  • the communication parameter can be updated at an arbitrary timing, it can be set to a value suitable for the situation of the base station controller PCF in real time.
  • the communication parameter storage unit 12 is configured to store the communication parameter acquired by the communication setting unit 11.
  • the data communication unit 13 is configured to perform data communication using the communication parameters stored by the communication parameter storage unit 12.
  • the pilot signal monitoring unit 14 monitors the reception quality of the pilot signal (for example, reception intensity, SIR, CIR, etc.) for each channel (carrier) set by the communication setting unit 11. It is composed.
  • reception quality of the pilot signal for example, reception intensity, SIR, CIR, etc.
  • the pilot signal monitoring unit 14 determines the pilot signal reception quality (for example, reception strength, SIR, CIR, etc.) for the channel (for example, the common control channel) to which the peripheral sector power of the communication terminal AT is also transmitted. It is configured to monitor.
  • the pilot signal reception quality for example, reception strength, SIR, CIR, etc.
  • Channel assignment determination unit 15 should make each channel set by communication setting unit 11 a handoff candidate based on the reception quality of the pilot signal monitored by pilot signal monitoring unit 14. It is configured to determine whether or not it is power.
  • the channel allocation determination unit 15 is a power that should be a handoff candidate for a particular channel to be used when the reception quality of the pilot signal for the specific channel is lower than the handoff candidate threshold. No, it is configured to be judged.
  • the channel information report transmission unit 16 is configured to transmit a channel information report (RU) including the reception quality of a predetermined pilot signal according to the determination result by the channel allocation determination unit 15.
  • the channel information report transmission unit 16 determines a handoff candidate for a specific channel. If the number of sectors that can be set in the communication terminal AT is equal to or greater than the maximum number of communication sectors when the specific channel is determined to be a node-off candidate, A channel information report (RU) as a candidate for node-off is not transmitted.
  • the channel information report transmission unit 16 determines that the specific channel should be a handoff candidate, and makes the specific channel a candidate for node-off. If the number of sectors that can be set in the channel at the corresponding communication terminal AT is greater than or equal to the maximum number of communication sectors, the channel information report (RU) itself that should be transmitted when a predetermined condition is satisfied during normal times or at a predetermined cycle It may be configured to not send!
  • the channel information report transmission unit 16 determines that the specific channel should be a handoff candidate, and sets the specific channel as a node-off candidate. When the number of sectors that can be set in the channel in AT exceeds the maximum number of communication sectors, the channel information report has been changed so that processing (resource allocation processing) that makes a strong specific channel a candidate for node off is not performed. It may be configured to transmit (RU).
  • the channel information report transmission unit 16 monitors the reception quality of the pilot signal for the specific channel to be transmitted by the pilot signal monitoring unit 14. It may be configured to set a value better than the result obtained.
  • the channel information report transmission unit 16 monitors the reception quality of the pilot signal for the channel transmitted from the peripheral sector by the pilot signal monitoring unit 14. It is configured to set to a value worse than the result that was made.
  • the communication terminal AT moves in the order of position A ⁇ position B ⁇ position C ⁇ position D as shown in FIG.
  • step S1001 the communication terminal AT performs communication using channels ⁇ 1 to ⁇ 4 that exist at position A and are set up with sector ⁇ . ing
  • step S1002 the communication terminal AT moves to the position A force position B, and as a result, moves to the position ⁇ . Since the reception quality of the signal satisfies the handoff candidate threshold, it is determined that channel ⁇ 4 should be a node-off candidate.
  • the communication terminal AT transmits a channel information report (RU) with channel j84 as a handoff candidate.
  • step S1003 the communication terminal AT transmits a pilot signal for channel ⁇ 4 as a channel information report (RU) with channel ⁇ 4 as a handoff candidate. If the received quality exceeds the handoff candidate threshold, a channel information report (RU) containing! /, Is sent.
  • channel ⁇ 4 is assumed to be below the handoff candidate threshold.
  • step S1004 sector ⁇ , in response to the received channel information report (RU), “ ⁇ 9-” for notifying channel information report (RU) with channel ⁇ 4 as a node-off candidate.
  • Setup-A8 ”message is sent to the base station controller PCF.
  • step S1005 base station control apparatus PCF allocates resources to channel ⁇ 4 in sector ⁇ in accordance with the received “A9-Setup-A8” message (channel information report).
  • the base station controller PCF receives a channel ⁇ whose reception quality is lower than the handoff candidate threshold in sector a. Ends resource allocation for 4.
  • the base station controller PCF notifies the sector and sector ⁇ of the resource allocation result (channel ⁇ 4) through an "A9-Connect-A8" message.
  • the sector ⁇ notifies the communication terminal AT of the resource allocation result in the sector ⁇ (channel ⁇ 4) by “TCA”.
  • step S1007 the communication terminal AT performs channel a 1 to ⁇ 3 set with the sector ⁇ and channel set with the sector ⁇ according to the received TCA. Communication can be performed using ⁇ 4.
  • step S1008 the communication terminal AT moves to position B force position C. As a result, communication terminal AT switches to channel ⁇ 3 (specific channel) set with sector ⁇ set with sector ⁇ . Since the reception quality of all pilot signals satisfies the handoff candidate threshold, it is determined that channel ⁇ 3 should be a node-off candidate.
  • communication terminal AT determines that channel ⁇ 3 should be a node-off candidate.
  • communication terminal AT may be configured not to transmit the channel information report (RU) itself, and the reception quality of the pilot signal for channel ⁇ 3 falls below the handoff candidate threshold value. Thus, the channel information report (RU) changed to the content may be transmitted.
  • the communication terminal AT performs communication using the channels ⁇ 1 to ⁇ 3 set with the sector ⁇ and the channel j 8 4 set with the sector j 8. It is possible to continue.
  • step S1010 the communication terminal AT moves from position C to position D.
  • the reception quality of pilot signals for channels a 3 and ⁇ 4 falls below the handoff candidate threshold, and It is determined that the channels ⁇ 3 and ⁇ 4 set in step 5 should be used as node-off candidates.
  • the communication terminal AT can no longer set a channel with sector
  • the communication terminal AT transmits a channel information report (RU) with the channels ⁇ 3 and ⁇ 4 as node-off candidates.
  • step S1011 ! the communication terminal AT connects the channels ⁇ 3 and ⁇ 4 as channel information reports (RU) with the channels ⁇ 3 and ⁇ 4 as handoff candidates! / If the reception quality of the pilot signal exceeds the handoff candidate threshold value, a channel information report (RU) including the contents is transmitted.
  • RU channel information report
  • step S1012 the sector ⁇ , according to the received channel information report (RU), “A9-” is used to notify the channel information report (RU) in which the channels y 3 and ⁇ 4 are selected as node candidates.
  • Setup-A8 ”message is sent to the base station controller PCF.
  • step S1013 the base station controller PCF determines the channel ⁇ 3 and ⁇ 4 in the sector ⁇ according to the received "A9-Setup-A8" message (channel information report). Allocate resources.
  • the base station controller PCF receives a channel a whose reception quality has fallen below the handoff candidate threshold in sector ⁇ and. End resource allocation for 3 and ⁇ 4.
  • the base station controller PCF notifies the sectors ⁇ , ⁇ , and ⁇ of the resource allocation result (channels ⁇ 3 and ⁇ 4) through an “A9-Connect-A8” message.
  • step S1014 the sector ⁇ notifies the communication terminal AT of the resource allocation result (channels ⁇ 3 and ⁇ 4) to the communication terminal AT through "TCA".
  • step S1015 the communication terminal AT, according to the received TCA, channel 1 and ⁇ 2 set with the sector ⁇ and channel 0 set with the sector ⁇ . It is possible to communicate using 3 and ⁇ 4.
  • channel ⁇ 3 If the number of sectors that can be set in the communication terminal AT (“3”: sector and ⁇ ⁇ ⁇ ) is equal to or greater than the maximum number of communication sectors (“3”) by making the handoff candidate a channel ⁇ Send a channel information report (RU) with 3 as a node-off candidate. Therefore, it is possible to avoid that each communication terminal AT performs communication using a channel set with a sector having the maximum number of communication sectors or more.
  • step S1008 If channel ⁇ 3 is set as a handoff candidate and the number of sectors that can be set in the communication terminal AT (“3”: sector, ⁇ ⁇ ) exceeds the maximum number of communication sectors (“3”), Each communication terminal avoids using channel ⁇ 3 as a handoff candidate by stopping transmission of a channel information report (RU) that is supposed to be transmitted when a predetermined condition is satisfied or at a predetermined cycle. It is possible to avoid that the AT performs communication using a channel set up with sectors that exceed the maximum number of communication sectors.
  • RU channel information report
  • step S1008 even when the channel information report transmitting unit 16 determines that channel ⁇ 3 should be a node-off candidate (step S1008), If channel ⁇ 3 is set as a handoff candidate and the number of sectors that can be set in the communication terminal AT (“3”: sector, ⁇ ⁇ ) exceeds the maximum number of communication sectors (“3”), In the channel information report (RU) to be transmitted, by changing the reception quality of the pilot signal for channel ⁇ 3, channel ⁇ 3 is avoided as a node-off candidate, and each communication terminal AT It is possible to avoid communication using channels set up with more than the number of sectors.
  • the configuration of the mobile communication system according to the second embodiment of the present invention will be described with reference to FIG.
  • the configuration of the mobile communication system according to the present embodiment will be described mainly with respect to differences from the above-described configuration of the mobile communication system according to the first embodiment of the present invention.
  • the base station control apparatus PCF includes a communication control unit 31, a communication parameter storage unit 32, a data communication unit 33, a channel information report receiving unit 34, And a channel assignment control unit 35.
  • the communication control unit 31 is configured to perform a traffic channel (TrCH) setting process for performing data communication (packet communication) performed by each communication terminal AT! Speak.
  • the communication control unit 31 is configured to set communication parameters (for example, a handoff candidate threshold value, the maximum number of simultaneous communication sectors, etc.) necessary for performing strong data communication.
  • the communication control unit 31 may be configured to set the maximum number of simultaneous communication sectors to be applied using “TCA” transmitted from each communication terminal AT (see FIG. 3).
  • the communication control unit 31 may be configured to set the communication parameter to be output at an arbitrary timing according to the situation of the base station control device PCF.
  • the communication parameter storage unit 32 is configured to store communication parameters set for each communication terminal AT.
  • the data communication unit 33 is configured to perform data communication using the communication parameters stored in the communication parameter storage unit 32.
  • the data communication unit 33 is configured to perform distribution processing and scheduling processing for data addressed to each communication terminal AT.
  • the channel information report receiving unit 34 is configured to receive a channel information report (RU) including the reception quality of a predetermined pilot signal.
  • Channel allocation control unit 35 is configured to allocate resources to a specific channel in a specific sector in accordance with a channel information report (RU) received from communication terminal AT.
  • RU channel information report
  • the channel assignment control unit 35 can set a channel in the communication terminal AT when receiving a channel information report with a specific channel as a node-off candidate and by setting the specific channel as a node-off candidate.
  • the number of sectors is greater than or equal to the maximum number of communication sectors, no resources are allocated to specific channels that are powerful.
  • the communication terminal AT moves in the order of position A ⁇ position B ⁇ position C ⁇ position D as shown in FIG.
  • the maximum number of communication sectors is “3”.
  • step S2001 the communication terminal AT communicates using channels ⁇ 1 to ⁇ 4 that exist at position A and are set up with sector ⁇ . ing [0083]
  • step S2002 the communication terminal AT should move from position A force position B to channel ⁇ 4 set with sector ⁇ as a node-off candidate. to decide.
  • step S2003 if the reception quality of the pilot signal for channel ⁇ 4 exceeds the handoff candidate threshold, communication terminal AT transmits a channel information report (RU) including the contents.
  • RU channel information report
  • step S2004 in response to the received channel information report (RU), sector ⁇ sends an “A9-Setup-A8” message for notifying the received channel information report (RU) to the base station. Sent to controller PCF.
  • step S2005 the base station controller PCF sets the channel ⁇ 4 as a node-off candidate according to the received “A9-Setup-A8” message (channel information report). However, since the number of sectors that can be set for the channel (“2”: sector ⁇ ,
  • the base station controller PCF receives a channel whose reception quality is below the handoff candidate threshold in sector a. Ends resource allocation for ⁇ 4.
  • step S2006 the base station controller PCF notifies the sector ⁇ and the sector
  • step S2007 the sector ⁇ notifies the communication terminal AT of the resource allocation result (channel ⁇ 4) to the communication terminal AT by “TCA”.
  • step S2008 the communication terminal AT sets between the channels a 1 to ⁇ 3 set with the sector ⁇ and the sector ⁇ according to the received TCA. It becomes possible to communicate using the channel ⁇ 4.
  • step S2009 as a result of the movement to the position B force position C, the communication terminal AT determines that the channel ⁇ 3 set with the sector ⁇ should be a node-off candidate.
  • step S2010 communication terminal AT transmits a channel information report (RU) including the contents when the reception quality of the pilot signal for channel ⁇ 3 exceeds the handoff candidate threshold.
  • RU channel information report
  • step S2011 in response to the received channel information report (RU), sector ⁇ transmits an “A9-Setup-A8” message for notifying the received channel information report (RU).
  • Station controller Sends to PCF.
  • step S2012 the base station controller PCF determines the channel ⁇ 3 as a node-off candidate according to the received “A9-Setup-A8” message (channel information report). Since the number of sectors that can be set for the channel (“3”: sectors ⁇ , ⁇ , ⁇ ) is equal to or greater than the maximum number of communication sectors (“3”), resources are allocated to channel ⁇ 3 in sector ⁇ . Do not assign.
  • the base station controller PCF must not transmit the “A9-Connect- ⁇ 8” message corresponding to the “A9-Setup- ⁇ 8” message (channel information report)! Pu S 2013).
  • the communication terminal AT cannot make channel ⁇ 3 a node-off candidate at position C, so channels a 1 to a 3 set up with sector a, and Communicating using the channel ⁇ 4 established with the sector ⁇
  • step S2014 the communication terminal AT moves from position C to position D.
  • the reception quality of the pilot signals for channels a 3 and ⁇ 4 falls below the handoff candidate threshold, and It is determined that the channels ⁇ 3 and ⁇ 4 set in step 5 should be used as node-off candidates.
  • step S2015 if the reception quality of the pilot signal for channels ⁇ 3 and ⁇ 4 exceeds the handoff candidate threshold value, communication terminal AT transmits a channel information report (RU) including the contents of the signal. To do.
  • RU channel information report
  • step S2016 sector ⁇ responds to the received channel information report (RU).
  • step S2017 the base station controller PCF performs communication by setting channels ⁇ 3 and ⁇ 4 as node-off candidates in accordance with the received “A9-Setup-A8” message (channel information report).
  • the number of sectors that can be set for the channel (“2”: sector a, ⁇ ) must be equal to or greater than the maximum number of communication sectors (“3”) (excludes sector / 3). Allocate resources for ⁇ 3 and ⁇ 4.
  • the base station controller PCF receives a channel a whose reception quality falls below the handoff candidate threshold in sectors a and ⁇ . End resource allocation for 3 and ⁇ 4.
  • step S2018 the base station controller PCF notifies the sectors ⁇ , ⁇ of the resource allocation results (channels ⁇ 3 and ⁇ 4) by using the “A9-Connect- ⁇ 8” message.
  • step S2019 the sector ⁇ notifies the communication terminal AT of the resource allocation result (channels ⁇ 3 and ⁇ 4) to the communication terminal AT through “TCA”.
  • step S2020 the communication terminal AT, according to the received TCA, the channel 1 and ⁇ 2 set with the sector ⁇ and the channel set with the sector ⁇ Communication is possible using 3 and ⁇ 4.
  • channel allocation control unit 35 when channel allocation control unit 35 receives a channel information report (RU) with channel ⁇ 3 as a node-off candidate from communication terminal AT (step S2004). Even so, by setting channel ⁇ 3 as a node-off candidate, the number of sectors (“3”: sectors ⁇ , ⁇ , and ⁇ ) that can be set in the communication terminal AT is the maximum number of communication sectors (“3 )) In this case, since it is configured not to allocate resources to channel ⁇ 3 in sector ⁇ , each communication terminal AT is set between sectors with the maximum number of communication sectors or more. It is possible to avoid using the specified channel for communication.
  • the mobile communication system avoids that each communication terminal performs communication using a channel set with a sector having the maximum number of communication sectors or more.
  • Terminal, base station control apparatus, and mobile communication method can be provided.

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Abstract

L'invention concerne un dispositif de terminal de communication configuré afin de rendre chaque canal candidat potentiel de transfert par transmission d'informations de canal comprenant une qualité de réception de signal pilote prédéterminé. Ledit dispositif de terminal de communication comprend une unité d'évaluation configurée afin d'évaluer si chaque canal peut être un candidat potentiel de transfert sur la base de la qualité de réception du signal pilote prédéterminé; et une unité de transmission d'informations de canal non émetteur signalant qu'un canal spécifique peut être un candidat de transfert lorsque l'unité d'évaluation juge que ce canal spécifique devrait être un candidat de transfert, et lorsque le nombre de secteurs dans le dispositif de communication vers lequel un canal peut être établi est au moins égal au nombre maximum de secteurs de communication. Pour cela, on prend le canal spécifique comme candidat de transfert.
PCT/JP2006/325557 2005-12-22 2006-12-21 Dispositif de terminal de communication, dispositif de commande de station de base et procede de communication mobile WO2007072933A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005370174A JP2007174346A (ja) 2005-12-22 2005-12-22 通信端末、基地局制御装置及び移動通信方法
JP2005-370174 2005-12-22

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WO2007072933A1 true WO2007072933A1 (fr) 2007-06-28

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PCT/JP2006/325557 WO2007072933A1 (fr) 2005-12-22 2006-12-21 Dispositif de terminal de communication, dispositif de commande de station de base et procede de communication mobile

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998056196A1 (fr) * 1997-06-04 1998-12-10 Ntt Mobile Communications Network Inc. Systeme de radiocommunication mobile, station mobile et procede de commande des voies de passage de diversite
WO2000025254A1 (fr) * 1998-10-28 2000-05-04 Schlumberger Systemes Dispositif de lecture/ecriture pour une carte a memoire
JP2000197092A (ja) * 1998-12-25 2000-07-14 Nec Corp ダイバ―シティハンドオ―バにおける無線回線ブランチ制御方法および移動通信装置
JP2001054153A (ja) * 1999-08-05 2001-02-23 Ntt Docomo Inc ハンドオーバ制御方法、移動局および移動通信システム

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JP4570996B2 (ja) * 2005-03-22 2010-10-27 三菱電機株式会社 基地局集線システム、基地局集線装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998056196A1 (fr) * 1997-06-04 1998-12-10 Ntt Mobile Communications Network Inc. Systeme de radiocommunication mobile, station mobile et procede de commande des voies de passage de diversite
WO2000025254A1 (fr) * 1998-10-28 2000-05-04 Schlumberger Systemes Dispositif de lecture/ecriture pour une carte a memoire
JP2000197092A (ja) * 1998-12-25 2000-07-14 Nec Corp ダイバ―シティハンドオ―バにおける無線回線ブランチ制御方法および移動通信装置
JP2001054153A (ja) * 1999-08-05 2001-02-23 Ntt Docomo Inc ハンドオーバ制御方法、移動局および移動通信システム

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