CN102668433B - Method and equipment for detecting and processing wireless link failure - Google Patents

Method and equipment for detecting and processing wireless link failure Download PDF

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Publication number
CN102668433B
CN102668433B CN201080059399.0A CN201080059399A CN102668433B CN 102668433 B CN102668433 B CN 102668433B CN 201080059399 A CN201080059399 A CN 201080059399A CN 102668433 B CN102668433 B CN 102668433B
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China
Prior art keywords
component carrier
user terminal
downlink component
wireless link
abortion
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CN102668433A (en
Inventor
杨涛
苏西安·利姆
钱德瑞卡·沃拉尔
苏帝普·帕拉特
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a technical solution for detecting wireless downlink failures in the user terminal of wireless communication network with multi-component carriers. Firstly, the base station configures the user terminal with downlink component carriers on which the user terminal detects wireless link failures; after having detected wireless link final failures on one or more downlink component carriers, the user terminal notifies the base station and the base station assigns one or more new downlink component carriers to the user terminal. After having detected wireless link final failures on all the configured downlink component carriers, the user terminal allocates a recovery time to all the component carriers, and during this time, the downlink wireless failure is confirmed if no recovery signal is received on any of the downlink component carriers.

Description

Detect and process the method and apparatus of Radio Link Failure
Technical field
The present invention relates to for radio communication, owing to relating to downlink component carrier Radio Link Failure in cordless communication network, detect and process.
Background technology
In Long Term Evolution (Long Term Evolution, LTE) wireless communication system, owing to only having one-component carrier wave, therefore user terminal (User Equipment, UE) is only configured one-component carrier resource.When communicating by letter between base station and user terminal can not be guaranteed, down wireless link is unsuccessfully identified, owing to only having one-component carrier wave, therefore user terminal will and Huo Xin base station, former base station between re-establish and be connected.
Summary of the invention
In LTE-Advanced wireless communication system, adopted carrier aggregation to increase power system capacity, also in LTE-Advanced, can there are continuous or discontinuously arranged multiple component carriers, overall system bandwidth can reach 100M.A user terminal may be configured multiple component carriers, and now how processing down wireless link unsuccessfully becomes a problem in the urgent need to address.
According to a specific embodiment of the present invention, provide a kind of in the user terminal of cordless communication network the method for detection of down wireless link failure, the method comprises the following steps: receive the configuration messages from base station, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier; Determine whether to have detected that wireless link proves an abortion on each downlink component carrier being configured; If detected that wireless link proves an abortion on each downlink component carrier being configured, started timing; If in the first scheduled time length, on any downlink component carrier being configured, do not detect wireless link recovery, determine downlink wireless link failure.
According to another embodiment of the invention, provide a kind of in the base station of cordless communication network the processing method for user terminal Radio Link Failure, comprise: send configuration messages to described user terminal, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier; Determine whether described user terminal occurs that wireless link proves an abortion at least one downlink component carrier in described at least one downlink component carrier being configured; If described user terminal has occurred that wireless link proves an abortion, and distributes at least one new downlink component carrier for described user terminal at least one downlink component carrier in described at least one downlink component carrier being configured; Sending a resource distributes notification message to described user terminal, this resource allocation message is at least one new downlink component carrier of its distribution for notifying described user terminal, and indicates described user terminal to detect Radio Link Failure on described at least one new component carrier.
According to still another embodiment of the invention, provide a kind of in the user terminal of cordless communication network the checkout gear for detection of down wireless link failure, comprise: first receiving device, for receiving the configuration messages from base station, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier; The first determining device has detected that wireless link proves an abortion for determining whether on each downlink component carrier being configured; The first time set, if for detected that wireless link proves an abortion on each downlink component carrier being configured, start timing; The second determining device if in the first scheduled time length, does not detect wireless link recovery on any downlink component carrier being configured, and determines downlink wireless link failure.
According to another embodiment of the invention, provide a kind of in the base station of cordless communication network the processing unit for user terminal Radio Link Failure, comprise: dispensing device, be used for sending configuration messages to described user terminal, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier; The 4th determining device, for determining whether described user terminal occurs that wireless link proves an abortion on described at least one downlink component carrier of at least one downlink component carrier being configured; Distributor, if occurred that wireless link proves an abortion, and distributes at least one new downlink component carrier for described user terminal for described user terminal on described at least one downlink component carrier of at least one downlink component carrier being configured; Described dispensing device also distributes notification message to described user terminal for sending a resource, this resource allocation message is at least one new downlink component carrier of its distribution for notifying described user terminal, and indicates described user terminal to detect Radio Link Failure on described at least one new component carrier.
By method and apparatus of the present invention, for multi-carrier wireless communications system provides a technical scheme that effectively detects down wireless link failure.Technical scheme of the present invention provides the recovery of more time wait link, reduces to re-establish the number of times of connection, avoids the interruption of communication.In one embodiment, because base station allows user terminal be closed in the detection on those downlink component carriers that detected that wireless link proves an abortion in time, effectively saved the power of user terminal and processed resource.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done referring to accompanying drawing, it is more obvious that other features, objects and advantages of the present invention will become.
Fig. 1 is according to the application scenarios figure of the wireless communication system 100 of a specific embodiment of the present invention;
Fig. 2 be according to a specific embodiment of the present invention in the user terminal of cordless communication network for detection of the method flow diagram of down wireless link failure;
Fig. 3 be according to a specific embodiment of the present invention in the base station of cordless communication network for the handling process to user terminal Radio Link Failure;
Fig. 4 be according to a specific embodiment of the present invention in the user terminal of cordless communication network for detection of the structure chart of the checkout gear of down wireless link failure;
Fig. 5 be according to a specific embodiment of the present invention in the base station of cordless communication network for the structured flowchart of processing unit that user terminal Radio Link Failure is processed;
Wherein, same or analogous Reference numeral represents same or analogous steps characteristic or device (module).
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are carried out to detailed exemplary description.
Fig. 1 shows according to the application scenarios figure of the wireless communication system 100 of a specific embodiment of the present invention, in the application scenarios shown in Fig. 1, comprises base station 110 and user terminal 120.Those of ordinary skill in the art will be understood that base station 110 can have jurisdiction over more user terminals conventionally, in Fig. 1, for simplicity's sake, only shows user terminal 120.
Without loss of generality, it is example that wireless communication system 100 has 5 downlink component carrier CC1, CC2, CC3, CC4 and CC5, and each embodiment of the present invention is elaborated.
Fig. 2 show according to a specific embodiment of the present invention in the user terminal of cordless communication network for detection of the method flow diagram of down wireless link failure, below in conjunction with Fig. 2, the process that the user terminal 120 in Fig. 1 is detected to down wireless link failure is described in detail.
First, in step S201, user terminal 120 receives the configuration messages from base station 110, and this configuration messages detects Radio Link Failure for configure user terminal 120 at least one downlink component carrier.In one embodiment, as component carrier CC1, CC2 and CC3 distribute to user terminal 120 for the transmission of descending control signaling and/or the transmission of downlink data, base station 110 configure user terminals 120 detect Radio Link Failure on component carrier CC1, CC2 and CC3.
Then,, in step S202, user terminal 120 determines whether to have detected that wireless link proves an abortion on each downlink component carrier being configured.
In one embodiment, the implication that downlink component carrier wireless link proves an abortion refers to, in a scheduled time length, on this component carrier, detect after the interim failure of wireless link, start timing, in the second scheduled time length, if wireless link recovery do not detected, think that this link proves an abortion; If wireless link recovery detected, think that this link is finally not failed.Radio Link Failure in the second scheduled time length is called wireless link failure temporarily.
Particularly, it is multiple that user terminal 120 detects that on one-component carrier wave the interim failure of wireless link and the situation proving an abortion have, and below this is illustrated.
In one embodiment, user terminal 120 is in the 3rd scheduled time length, on a downlink component carrier being configured, detected that the intensity level of the first predetermined number is lower than the wireless reference signal of predetermined threshold, for example defined out-sync signal in LTE, determines and wireless link failure temporarily on this downlink component carrier being configured, detected.From wireless link, unsuccessfully start timing temporarily, if in the second scheduled time length, on this component carrier, do not detected that the intensity level of the second predetermined number is higher than the wireless reference signal of predetermined threshold, for example defined in-sync signal in LTE, determines on this downlink component carrier being configured and has detected that wireless link proves an abortion.
It should be noted that, determine different component carriers whether the interim failed standard of wireless link can, also can be different.For example, if in the 3rd scheduled time length, at component carrier CC1, the signal of M1 intensity level lower than predetermined threshold detected, thought and wireless link failure temporarily on component carrier CC1, detected; If in the 3rd scheduled time length, at component carrier CC2, the signal of N1 intensity level lower than predetermined threshold detected, think and wireless link failure temporarily on component carrier CC2, detected, N1 is not equal to M1.In addition, for different component carriers, the value of predetermined threshold also may be identical, also may be different.
From wireless link, unsuccessfully start timing temporarily, if in the second scheduled time length, user terminal 120 has detected the signal of M2 intensity level higher than predetermined threshold on component carrier CC1, for example defined in-sync signal in LTE, think and wireless link recovery detected on component carrier CC1, remove the interim failed state of the upper wireless link of component carrier CC1.If in the second scheduled time length, user terminal 120 has detected the signal of N2 intensity level higher than predetermined threshold on component carrier CC2, for example defined in-sync signal in LTE, think and wireless link recovery detected on component carrier CC2, remove the interim failed state of the upper wireless link of component carrier CC2.N2 is not equal to M2.
In another embodiment, user terminal 120 is in the 4th scheduled time length, determine on the downlink component carrier of a configuration, on CC3, channel quality always lower than predetermined quality, or channel quality reaches first pre-determined number lower than the number of times of predetermined quality, determine and wireless link failure temporarily on this downlink component carrier being configured, detected.
From wireless link, unsuccessfully start timing temporarily, if in the second scheduled time length, user terminal 120 detect channel quality on this component carrier higher than the number of times of predetermined quality higher than the second pre-determined number, determine on this component carrier and wireless link recovery detected, remove the interim failed state of wireless link on this component carrier.
It should be noted that, for different component carriers, predetermined quality standard may be identical, also may be different.
Alternatively, user terminal 120 is after determining on a downlink component carrier being configured that wireless link proves an abortion, on the downlink component carrier that can also prove an abortion at this wireless link, continue to detect wireless link recovery, if wireless link recovery detected, remove the state that this component carrier wireless link proves an abortion.In one embodiment, if continue on the downlink component carrier that base station 110 informing user terminals 120 do not prove an abortion at this wireless link to detect wireless link recovery, user terminal 120 is closed detection, below will be described in detail this.
Then,, in step S203, if detected that wireless link proves an abortion on each downlink component carrier being configured, start timing.For example, user terminal 120 can start a timer.This provides again chance one time for wireless link recovery.
Finally, in step S204, if in the first scheduled time length, on any downlink component carrier being configured, do not detect wireless link recovery, determine downlink wireless link failure.The implication of downlink wireless link failure refers at all downlink component carrier wireless links that are configured of user terminal 120 and proves an abortion.
In one embodiment, if in the first scheduled time length, user terminal 120 has not detected that the intensity level of the 3rd predetermined number is higher than the wireless reference signal of predetermined threshold on the downlink component carrier being configured at any, for example defined in-sync signal in LTE, determine and on any downlink component carrier being configured, do not detect wireless link recovery, determine downlink wireless link failure.
It should be noted that, the standard of wireless link recovery can be the same to determine different component carriers, also can be different.For example, if in the first scheduled time length, at component carrier CC1, the signal of X intensity level higher than predetermined threshold detected, thought and wireless link recovery detected on component carrier CC1; If in the first scheduled time length, at component carrier CC2, the signal of Y intensity level higher than predetermined threshold detected, think and wireless link recovery detected on component carrier CC2, X is not equal to Y.In addition, for different component carriers, the value of predetermined threshold also may be identical, also may be different.
In another embodiment, if in the first scheduled time length, user terminal 120 has not detected that the 3rd pre-determined number or above channel quality are higher than predetermined quality on the downlink component carrier being configured at any, determine and on any downlink component carrier being configured, do not detect wireless link recovery, determine downlink wireless link failure.For different component carriers, predetermined quality standard may be identical, also may be different.
At user terminal 120, determine that after downlink wireless link failure, user terminal 120 can not detect wireless link recovery again on any downlink component carrier being configured, but re-establishes wireless connections.User terminal 120 may re-establish wireless connections with base station 110, likely sets up wireless connections with other base station (not shown in Figure 1).In one embodiment, user terminal 120 is after detecting that wireless link on each downlink component carrier proves an abortion, notice upper strata, as rrc layer, after rrc layer occurs that wireless link proves an abortion on all downlink component carriers being configured, also be, after the wireless link of down link proves an abortion, to re-establish wireless connections.
Above the situation of the whole down wireless link failure of user terminal 120 how to confirm is had been described in detail.
Alternatively, when user terminal 120 is detecting that wireless link on one or more component carriers that are configured proves an abortion, the wireless link at least one downlink component carrier can also informing base station 110 being configured at least one component carrier proves an abortion.In one embodiment, user terminal 120 can also only prove an abortion the wireless link of part component carrier notice to base station 110.For example, as user terminal 120 has detected that on component carrier CC1 and CC2 wireless link proves an abortion, user terminal 120 will detect that on component carrier CC1 and CC2 the fact that wireless link proves an abortion notifies to base station 110.User terminal 120 also can be only notified to base station 110 detect the fact that wireless link proves an abortion on component carrier CC1, or only by upper component carrier CC2, detect the fact that wireless link proves an abortion and notify to base station 110.
Alternatively, base station 110 is receiving after the notice of user terminal 120, send a notification message to user terminal 120, with informing user terminal 120, at least one downlink component carrier being configured proving an abortion, close detection, also close wireless link recovery and Radio Link Failure and detect.User terminal 120, receiving after this notification message, is closed detection on the component carrier of notifying in base station 110.The benefit of doing is like this saved the power of user terminal 120 and processed resource.In one embodiment, detection is also only closed on the part component carrier of informing user terminal 120 in the component carrier of those final Radio Link Failure of its informing base station 110 in base station 110.
Alternatively, before user terminal 120 receives the notification message from base station 110, on the downlink component carrier that user terminal 120 can also prove an abortion at each wireless link, detect wireless link recovery.If wireless link recovery detected on certain downlink component carrier, informing base station 110.
For example, as user terminal 120 will detect that on component carrier CC1 and CC2 the fact that wireless link proves an abortion notifies to base station 110, base station 110 informing user terminals 120 are closed detection on component carrier CC1 and CC2, also allow user terminal 120 abandon component carrier CC1 and CC2.Base station 110 also only informing user terminal 120 on component carrier CC1, close detection, or only informing user terminal 120 is closed detection on component carrier CC2.
Alternatively, base station 110 is receiving after the notice of its final Radio Link Failure of indication of user terminal 120, can also be that user terminal 120 distributes at least one new component carrier, and send resource distribution notification message to user terminal 120, this resource is distributed at least one new component carrier that notification message is its distribution for informing user terminal 120 base stations, and indicating user terminal 120 detects Radio Link Failure at this at least one new component carrier.
Above to the angle from user terminal, in multi-carrier wireless communications system, process and corresponding processing procedure that how user terminal detects down wireless link failure have been described in detail, below from the angle of base station, in conjunction with Fig. 1 and Fig. 3, in multi-carrier wireless communications system, in base station for the handling process of user terminal Radio Link Failure is elaborated.
First, in step S301, base station 110 sends configuration messages to user terminal 120, and this configuration messages detects Radio Link Failure for configure user terminal 120 at least one downlink component carrier.At least one component carrier of this configuration is for the transmission of descending control signaling and/or the transmission of downlink data.
Then, in step S302, base station 110 determine user terminal 120 whether at least one downlink component carrier being configured at least one downlink component carrier wireless link occur proving an abortion.
It is multiple that base station 110 determines that user terminal 120 situation that wireless link proves an abortion on one-component carrier wave has, and below this is illustrated.
In one embodiment, before the step S302 shown in Fig. 3, base station 110 receives the notice that occurs Radio Link Failure from least one component carrier in its at least one downlink component carrier being configured of indication of user terminal 120.Then, in step S302, base station 110 learns that according to this notice user terminal 120 wireless link link on which component carrier proves an abortion.
In another embodiment, base station 110 receives from user terminal 120 channel quality indication (CQI) information at least one component carrier at least one downlink component carrier being configured.Then, in step S302, the channel quality indication (CQI) information at least one downlink component carrier that base station 110 is configured according to user terminal 120 at least one component carrier determines whether user terminal 120 has occurred Radio Link Failure at least one component carrier being configured at least one downlink component carrier.
If in the 4th scheduled time length, the channel quality of user terminal 120 on a downlink component carrier reached the first pre-determined number lower than the number of times of predetermined quality, base station 110 determine on this downlink component carrier, detected wireless link temporarily failure, then start timing, if in the second scheduled time length, channel quality on this downlink component carrier still always lower than predetermined quality or higher than the number of times of predetermined quality lower than the second pre-determined number, base station 110 determines that user terminal 120 wireless link on this component carrier proves an abortion.
Then, in step S303, if base station 110 determines that user terminal 120 has occurred that wireless link proves an abortion, and distributes at least one new downlink component carrier for user terminal 120 at least one downlink component carrier at least one downlink component carrier being configured.
Finally, in step S304, base station 110 sends a resource and distributes notification message to user terminal 120, at least one new downlink component carrier that this resource allocation message is its distribution for informing user terminal 120 base stations.
Alternatively, after step S303, Radio Link Failure also can be detected by informing user terminal 120 in base station 110 at least one new component carrier.
For example, as user terminal 120 wireless link on component carrier CC1 and CC2 proves an abortion, user terminal 120 can be given by component carrier CC4 and CC5 in base station 110, and indicating user terminal 120 detects Radio Link Failure on component carrier CC4 and CC5.Certainly, owing to not detecting on component carrier CC3 that wireless link proves an abortion, user terminal 120 can detect Radio Link Failure on component carrier CC3, CC4 and CC5.
If user terminal 120 wireless link on component carrier CC1, CC2 and CC3 proves an abortion, mean all failures of down link between base station 110 and user terminal 120, the control signal of base station 110 or data cannot arrive user terminal 120, also be that base station 110 has lost the control to user terminal 120, now, can only oneself reconnect and solve by user terminal 120.
Alternatively, after having determined in step S302 in base station 110 and having occurred that wireless link proves an abortion at least one downlink component carrier at least one downlink component carrier that user terminal 120 is being configured, base station 110 can send a notification message to user terminal 120, and this notification message is closed detection for informing user terminal 120 at least one downlink component carrier being configured proving an abortion.As described above, in one embodiment, detection is also only closed on the part component carrier of informing user terminal 120 in the component carrier of those final Radio Link Failure in base station 110.
Fig. 4 show according to a specific embodiment of the present invention in the user terminal of cordless communication network for detection of the structured flowchart of the checkout gear 400 of down wireless link failure.In Fig. 4, checkout gear 400 comprises first receiving device 401, the first determining device 402, the first time set 403 and the second determining device 404.For simplicity's sake, also have an a little device not shown in Figure 4.
Below in conjunction with Fig. 1, the process that detects down wireless link failure to being arranged in the checkout gear 400 of user terminal 120 is described in detail.
First, first receiving device 401 receives the configuration messages from base station 110, and this configuration messages detects Radio Link Failure for configure user terminal 120 at least one downlink component carrier.In one embodiment, as component carrier CC1, CC2 and CC3 distribute to user terminal 120 for the transmission of descending control signaling and/or the transmission of downlink data, base station 110 configure user terminals 120 detect Radio Link Failure on component carrier CC1, CC2 and CC3.
Then, the first determining device 402 determines whether to have detected that wireless link proves an abortion on each downlink component carrier being configured.
Alternatively, checkout gear 400 also comprises an interim failure detection device, the second time set and the 3rd determining device, for determining that the wireless link on one or more downlink component carriers proves an abortion.
In one embodiment, the implication that downlink component carrier wireless link proves an abortion refers to, in a scheduled time length, interim failure detection device detects after the interim failure of wireless link on this component carrier, the second time set starts timing, in the second scheduled time length, if wireless link recovery do not detected, the 3rd determining device determines that this link proves an abortion; If wireless link recovery detected, the 3rd determining device is determined the finally not failure of this link.Radio Link Failure in the second scheduled time length is called wireless link failure temporarily.
Particularly, it is multiple that interim failure detection device detects that on one-component carrier wave the interim failed situation of wireless link has, and below this is illustrated.
In one embodiment, interim failure detection device is in the 3rd scheduled time length, on a downlink component carrier being configured, detected that the intensity level of the first predetermined number is lower than the wireless reference signal of predetermined threshold, for example defined out-sync signal in LTE, determines and wireless link failure temporarily on this downlink component carrier being configured, detected.The second time set unsuccessfully starts timing from wireless link temporarily, if in the second scheduled time length, on this component carrier, do not detected that the intensity level of the second predetermined number is higher than the wireless reference signal of predetermined threshold, for example defined in-sync signal in LTE, the 3rd determining device is determined on this downlink component carrier being configured and has been detected that wireless link proves an abortion.
It should be noted that, determine different component carriers whether the interim failed standard of wireless link can, also can be different.For example, if in the 3rd scheduled time length, at component carrier CC1, the signal of M1 intensity level lower than predetermined threshold detected, thought and wireless link failure temporarily on component carrier CC1, detected; If in the 3rd scheduled time length, at component carrier CC2, the signal of N1 intensity level lower than predetermined threshold detected, think and wireless link failure temporarily on component carrier CC2, detected, N1 is not equal to M1.In addition, for different component carriers, the value of predetermined threshold also may be identical, also may be different.
The second time set from wireless link temporarily unsuccessfully beginning timing, if in the second scheduled time length, the signal of M2 intensity level higher than predetermined threshold on component carrier CC1, detected, as the in-sync signal defining in LTE, the 3rd determining device is thought wireless link recovery detected on component carrier CC1, removes the interim failed state of the upper wireless link of component carrier CC1.If in the second scheduled time length, the signal of N2 intensity level higher than predetermined threshold on component carrier CC2, detected, as the in-sync signal defining in LTE, the 3rd determining device is determined on component carrier CC2 and wireless link recovery detected, removes the interim failed state of the upper wireless link of component carrier CC2.N2 is not equal to M2.
In another embodiment, interim failure detection device is in the 4th scheduled time length, determine on the downlink component carrier of a configuration, on CC3, channel quality always lower than predetermined quality, or channel quality lower than the number of times of predetermined quality reach first pre-determined number determine on this downlink component carrier being configured, detected wireless link temporarily failure.
The second time set unsuccessfully starts timing from wireless link temporarily, if in the second scheduled time length, detect channel quality on this component carrier higher than the number of times of predetermined quality higher than the second pre-determined number, the 3rd determining device is determined on this component carrier and wireless link recovery detected, removes the interim failed state of wireless link on this component carrier.
It should be noted that, for different component carriers, predetermined quality standard may be identical, also may be different.
Alternatively, the 3rd determining device is after determining on a downlink component carrier being configured that wireless link proves an abortion, on the downlink component carrier that can also prove an abortion at this wireless link, continue to detect wireless link recovery, if wireless link recovery detected, remove the state that this component carrier wireless link proves an abortion.In one embodiment, if continue to detect wireless link recovery on the downlink component carrier that base station 110 notifies checkout gear 400 not prove an abortion at this wireless link, checkout gear 400 is closed detection, below will be described in detail this.
Then,, if detected that wireless link proves an abortion on each downlink component carrier being configured, the first time set 403 starts timing.For example, the first time set 403 can be a timer.
Finally, if in the first scheduled time length, on any downlink component carrier being configured, do not detect wireless link recovery, the second determining device 404 is determined downlink wireless link failure.The implication of downlink wireless link failure refers at all downlink component carrier wireless links that are configured of user terminal 120 and proves an abortion.
In one embodiment, if in the first scheduled time length, on the downlink component carrier being configured at any, do not detected that the intensity level of the 3rd predetermined number is higher than the wireless reference signal of predetermined threshold, for example defined in-sync signal in LTE, the second determining device 404 determines to detect wireless link recovery on any downlink component carrier being configured, and determines downlink wireless link failure.
It should be noted that, the standard of wireless link recovery can be the same to determine different component carriers, also can be different.For example, if in the first scheduled time length, at component carrier CC1, the signal of X intensity level higher than predetermined threshold detected, thought and wireless link recovery detected on component carrier CC1; If in the first scheduled time length, at component carrier CC2, the signal of Y intensity level higher than predetermined threshold detected, think and wireless link recovery detected on component carrier CC2, X is not equal to Y.In addition, for different component carriers, the value of predetermined threshold also may be identical, also may be different.
In another embodiment, if in the first scheduled time length, on the downlink component carrier being configured at any, do not detected that the 3rd pre-determined number or above channel quality are higher than predetermined quality, the second determining device 404 determines to detect wireless link recovery on any downlink component carrier being configured, and determines downlink wireless link failure.For different component carriers, predetermined quality standard may be identical, also may be different.
In the second determining device 404, determine that after down wireless link failure, user terminal 120 can not detect wireless link recovery again on any downlink component carrier being configured, but re-establishes wireless connections.User terminal 120 may re-establish wireless connections with base station 110, likely sets up wireless connections with other base station (not shown in Figure 1).In one embodiment, user terminal 120 is after detecting that wireless link on each downlink component carrier proves an abortion, notice upper strata, as rrc layer, after rrc layer occurs that wireless link proves an abortion on all downlink component carriers being configured, also be, after the wireless link of down link proves an abortion, to re-establish wireless connections.
Above the situation of the whole down wireless link failure of user terminal 120 how to confirm is had been described in detail.
Alternatively, when the 3rd determining device is detecting that wireless link on one or more component carriers that are configured proves an abortion, checkout gear 400 can also comprise first notifying device, for the wireless link at least one component carrier of at least one downlink component carrier can informing base station 110 being configured, proves an abortion.In one embodiment, the first notifying device can also only prove an abortion the wireless link of part component carrier notice to base station 110.For example, as the 3rd determining device has detected that on component carrier CC1 and CC2 wireless link proves an abortion, the first notifying device will detect that on component carrier CC1 and CC2 the fact that wireless link proves an abortion notifies to base station 110.The first notifying device also can be only notified to base station 110 detect the fact that wireless link proves an abortion on component carrier CC1, or only by upper component carrier CC2, detect the fact that wireless link proves an abortion and notify to base station 110.
Alternatively, base station 110 is receiving after the notice of user terminal 120, send a notification message to user terminal 120, with informing user terminal 120, at least one downlink component carrier being configured proving an abortion, close detection, also close wireless link recovery and Radio Link Failure and detect.First receiving device 401, receiving after this notification message, is closed detection on the component carrier of notifying in base station 110.The benefit of doing is like this saved the power of user terminal 120 and processed resource.In one embodiment, detection is also only closed on the part component carrier of informing user terminal 120 in the component carrier of those final Radio Link Failure of its informing base station 110 in base station 110.
Alternatively, before first receiving device 401 receives the notification message from base station 110, on the downlink component carrier that checkout gear 400 can also prove an abortion at each wireless link, detect wireless link recovery.If wireless link recovery detected on certain downlink component carrier, informing base station 110.
For example, as the first notifying device will detect that on component carrier CC1 and CC2 the fact that wireless link proves an abortion notifies to base station 110, base station 110 informing user terminals 120 are closed detection on component carrier CC1 and CC2, also allow user terminal 120 abandon component carrier CC1 and CC2.Base station 110 also only informing user terminal 120 on component carrier CC1, close detection, or only informing user terminal 120 is closed detection on component carrier CC2.
Alternatively, base station 110 is receiving after the notice of its final Radio Link Failure of indication of user terminal 120, can also be that user terminal 120 distributes at least one new component carrier, and send resource distribution notification message to user terminal 120, this resource is distributed at least one new component carrier that notification message is its distribution for informing user terminal 120 base stations, and indicating user terminal 120 detects Radio Link Failure at this at least one new component carrier.
To the angle from user terminal, in multi-carrier wireless communications system, process and corresponding processing procedure that how the checkout gear 400 in user terminal detects down wireless link failure have been described in detail above.
Fig. 5 show according to a specific embodiment of the present invention in the base station of cordless communication network for the structured flowchart of processing unit 500 that user terminal Radio Link Failure is processed.In Fig. 5, processing unit 500 comprises dispensing device 501, the 4th determining device 502 and distributor 503.Below in conjunction with Fig. 1, in multi-carrier wireless communications system, in base station 110, for the course of work of the processing unit 500 to the processing of user terminal Radio Link Failure, be elaborated.
First, dispensing device 501 sends configuration messages to user terminal 120, and this configuration messages detects Radio Link Failure for configure user terminal 120 at least one downlink component carrier.At least one component carrier of this configuration is for the transmission of descending control signaling and/or the transmission of downlink data.
Then, the 4th determining device 502 determine user terminal 120 whether at least one downlink component carrier being configured at least one downlink component carrier wireless link occur proving an abortion.
It is multiple that the 4th determining device 502 determines that user terminal 120 situation that wireless link proves an abortion on one-component carrier wave has, and below this is illustrated.
In one embodiment, processing unit 500 also comprises second receiving system (not shown in Figure 5), for receiving the notice that occurs Radio Link Failure from its at least one component carrier of at least one downlink component carrier being configured of indication of user terminal 120.Then, the 4th determining device 502 learns that according to this notice user terminal 120 wireless link link on which component carrier proves an abortion.
In another embodiment, the second receiving system receives from user terminal 120 channel quality indication (CQI) information at least one component carrier at least one downlink component carrier being configured.Then, the channel quality indication (CQI) information at least one downlink component carrier that the 4th determining device 502 is configured according to user terminal 120 at least one component carrier determines whether user terminal 120 has occurred Radio Link Failure at least one component carrier being configured at least one downlink component carrier.
If in the 4th scheduled time length, the channel quality of user terminal 120 on a downlink component carrier reached the first pre-determined number lower than the number of times of predetermined quality, the 4th determining device 502 determine on this downlink component carrier, detected wireless link temporarily failure, then start timing, if in the second scheduled time length, channel quality on this downlink component carrier still always lower than predetermined quality or higher than the number of times of predetermined quality lower than the second pre-determined number, the 4th determining device 502 determines that user terminal 120 wireless link on this component carrier proves an abortion.
If the 4th determining device 502 determines that user terminal 120 has occurred that wireless link proves an abortion at least one downlink component carrier at least one downlink component carrier being configured, distributor 503 distributes at least one new downlink component carrier for user terminal 120.
Finally, dispensing device 501 sends a resource and distributes notification message to user terminal 120, at least one new downlink component carrier that this resource allocation message is its distribution for informing user terminal 120 base stations.Alternatively, dispensing device 501 also can send an indicating user terminal 120 and at least one new component carrier, detect notifying to user terminal 120 of Radio Link Failure.
For example, as user terminal 120 wireless link on component carrier CC1 and CC2 proves an abortion, distributor 503 can be given user terminal 120 by component carrier CC4 and CC5, and indicating user terminal 120 detects Radio Link Failure on component carrier CC4 and CC5.Certainly, owing to not detecting on component carrier CC3 that wireless link proves an abortion, user terminal 120 can detect Radio Link Failure on component carrier CC3, CC4 and CC5.
If user terminal 120 wireless link on component carrier CC1, CC2 and CC3 proves an abortion, mean all failures of down link between base station 110 and user terminal 120, the control signal of base station 110 or data cannot arrive user terminal 120, also be that base station 110 has lost the control to user terminal 120, now, can only oneself reconnect and solve by user terminal 120.
Alternatively, occurred that wireless link proves an abortion at least one downlink component carrier in the 4th determining device 502 has been determined at least one downlink component carrier that user terminal 120 is being configured after, dispensing device 501 sends a notification message to user terminal 120, and this notification message is closed detection for informing user terminal 120 at least one downlink component carrier being configured proving an abortion.As described above, in one embodiment, detection is also only closed on the part component carrier of informing user terminal 120 in the component carrier of those final Radio Link Failure in base station 110.
Those of ordinary skill in the art will be understood that the present invention is applicable to the wireless communication system of general multiple component carriers.Another one need to illustrate, the value of each scheduled time length, predetermined number, pre-determined number and predetermined threshold herein can be different with the specific implementation of real system.For example, the 3rd scheduled time length can be identical with the 4th scheduled time length.
It should be noted that, above-described embodiment is only exemplary, but not limitation of the present invention.Within any technical scheme that does not deviate from spirit of the present invention all should fall into protection scope of the present invention.In addition, any Reference numeral in claim should be considered as limiting related claim; " comprise " that a word do not get rid of device unlisted in other claim or specification or step; " one " before device does not get rid of the existence of multiple such devices; In the equipment that comprises multiple devices, the one or more function in the plurality of device can be realized by same hardware or software module; The word such as " first ", " second ", " the 3rd " is only used for representing title, and does not represent any specific order.

Claims (15)

  1. In the user terminal of cordless communication network for detection of a method for down wireless link failure, the method comprises the following steps:
    -receiving the configuration messages from base station, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier;
    The method is further comprising the steps of:
    A. determine whether to have detected that wireless link proves an abortion on each downlink component carrier being configured;
    If B. detected that wireless link proves an abortion on each downlink component carrier being configured, started timing;
    If C., in the first scheduled time length, do not detect wireless link recovery on any downlink component carrier being configured, determine downlink wireless link failure.
  2. 2. method according to claim 1, wherein, further comprising the steps of after described step C:
    D. re-establish wireless connections.
  3. 3. method according to claim 1, further comprising the steps of:
    If wireless link failure temporarily a. detected on a downlink component carrier being configured, start timing;
    If b., in the second scheduled time length, wireless link recovery do not detected on the described downlink component carrier being configured, determine that the wireless link on the downlink component carrier being configured described in this proves an abortion.
  4. 4. method according to claim 3, wherein, further comprising the steps of after described b:
    On-the downlink component carrier that proves an abortion at described wireless link, continue to detect wireless link recovery.
  5. 5. method according to claim 3, further comprising the steps of:
    -notify the wireless link at least one component carrier at least one downlink component carrier being configured described in described base station to prove an abortion.
  6. 6. method according to claim 5, further comprising the steps of:
    -receiving the notification message from described base station, this notification message is closed detection on the downlink component carrier of notifying described user terminal to be configured in described at least one proving an abortion.
  7. 7. method according to claim 5, further comprising the steps of:
    -receiving from the resource of described base station and distribute notification message, it is at least one new component carrier of its distribution for notifying described user terminal that this resource is distributed notification message.
  8. 8. method according to claim 7, further comprising the steps of:
    -reception detects the notice of Radio Link Failure on described at least one new component carrier from the described user terminal of being used to indicate of described base station.
  9. 9. method according to claim 3, has describedly detected that on each downlink component carrier being configured the interim failed method of wireless link comprises the following steps:
    -in the 3rd scheduled time length, on each downlink component carrier, detected that the intensity level of predetermined number is lower than the wireless reference signal of predetermined threshold; Or
    -in the 4th scheduled time length, the channel quality of each downlink component carrier is lower than predetermined quality.
  10. In the base station of cordless communication network for a processing method for user terminal Radio Link Failure, comprising:
    -sending configuration messages to described user terminal, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier;
    The method is further comprising the steps of:
    I. determine whether described user terminal occurs that wireless link proves an abortion at least one downlink component carrier at least one downlink component carrier being configured;
    If II. described user terminal has occurred that wireless link proves an abortion, and distributes at least one new downlink component carrier for described user terminal at least one downlink component carrier in described at least one downlink component carrier being configured;
    III. send a resource and distribute notification message to described user terminal, this resource allocation message is at least one new downlink component carrier of its distribution for notifying described user terminal.
  11. 11. methods according to claim 10, wherein, further comprising the steps of after described Step II:
    -notify described user terminal to detect Radio Link Failure on described at least one new component carrier.
  12. 12. methods according to claim 10, wherein, further comprising the steps of after described step I:
    If-described user terminal has occurred that wireless link proves an abortion at least one downlink component carrier in described at least one downlink component carrier being configured, send a notification message to described user terminal, this notification message is closed detection on the downlink component carrier of notifying described user terminal to be configured in described at least one proving an abortion.
  13. 13. methods according to claim 10, wherein, further comprising the steps of before described step I:
    From at least one component carrier at least one downlink component carrier being configured described in the indication of described user terminal, there is the notice that wireless link proves an abortion in-reception; Or
    Further comprising the steps of before described step I:
    -reception is from the channel quality indication (CQI) information at least one component carrier in described at least one downlink component carrier being configured of described user terminal;
    Wherein, described step I is further comprising the steps of:
    Channel quality indication (CQI) information at least one downlink component carrier being configured described in-basis at least one component carrier determines whether described user terminal has occurred that wireless link proves an abortion on described at least one component carrier being configured at least one downlink component carrier.
  14. 14. 1 kinds in the user terminal of cordless communication network for detection of the checkout gear of down wireless link failure, comprising:
    First receiving device, for receiving the configuration messages from base station, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier;
    The first determining device has detected that wireless link proves an abortion for determining whether on each downlink component carrier being configured;
    The first time set, if for detected that wireless link proves an abortion on each downlink component carrier being configured, start timing;
    The second determining device if in the first scheduled time length, does not detect wireless link recovery on any downlink component carrier being configured, and determines downlink wireless link failure.
  15. 15. 1 kinds in the base station of cordless communication network for the processing unit of user terminal Radio Link Failure, comprising:
    Dispensing device, for sending configuration messages to described user terminal, this configuration messages is used for configuring described user terminal and detects Radio Link Failure at least one downlink component carrier;
    The 4th determining device, for determining whether described user terminal occurs that wireless link proves an abortion at least one downlink component carrier of at least one downlink component carrier being configured;
    Distributor, if occurred that wireless link proves an abortion, and distributes at least one new downlink component carrier for described user terminal for described user terminal on described at least one downlink component carrier of at least one downlink component carrier being configured;
    Described dispensing device also for:
    -sending a resource distributes notification message to described user terminal, this resource allocation message is at least one new downlink component carrier of its distribution for notifying described user terminal, and indicates described user terminal to detect Radio Link Failure on described at least one new component carrier.
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WO2019091545A1 (en) * 2017-11-07 2019-05-16 Huawei Technologies Co., Ltd. Method and devices for beam recovery in a wireless network
WO2021087878A1 (en) * 2019-11-07 2021-05-14 Apple Inc. Apparatus, system, and method for cell detection and measurement for nr unlicensed

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