CN102045740B - Wireless repeating mode management system and method - Google Patents
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Abstract
本发明揭示了一种无线中继模式管理系统及方法，用以对移动中继节点MRS进行模式管理，所述MRS的模式包括激活模式、休眠模式。所述系统包括信道监控模块、模式转换模块。信道监控模块用以在MRS处于激活模式时监控eNB与MRS下属用户的干扰水平，得到第一特殊值；在MRS处于休眠模式时监控eNB与MRS原下属用户的通信质量水平，得到第二特殊值。模式转换模块用以在所述第一特殊值或第二特殊值不满足设定条件时，转换MRS的模式。本发明可在MRS靠近小区基站时既避免eNB的干扰，又节省MRS的能源消耗，同时保持与eNB间的通信避免了MRS从休眠模式转换到激活模式时与eNB重新建立连接，从而减小了用户群切换所带来的延迟，保证用户的通信质量。
The invention discloses a wireless relay mode management system and method, which are used for mode management of a mobile relay node MRS, and the modes of the MRS include an active mode and a dormant mode. The system includes a channel monitoring module and a mode conversion module. The channel monitoring module is used to monitor the interference level between the eNB and the subordinate users of the MRS when the MRS is in the active mode, and obtain the first special value; when the MRS is in the dormant mode, monitor the communication quality level between the eNB and the former subordinate users of the MRS, and obtain the second special value . The mode switching module is used for switching the mode of the MRS when the first special value or the second special value does not meet the set condition. The present invention can not only avoid the interference of the eNB when the MRS is close to the base station of the cell, but also save the energy consumption of the MRS, and at the same time maintain the communication with the eNB and avoid the re-establishment of the connection with the eNB when the MRS switches from the dormant mode to the active mode, thus reducing the energy consumption of the MRS. The delay caused by user group switching ensures the communication quality of users.
Description
Technical field
The invention belongs to the 4th third-generation mobile communication technical field, relate to a kind of wireless repeater, relate in particular to a kind of wireless relay schema management system; In addition the invention still further relates to, the schema management method of above-mentioned wireless relay schema management system.
Background technology
Maximum as current communications field development potentiality, the mobile communication technology that market prospects are the widest, has welcome the 3G epoch.But in order to solve frequency spectrum resource anxiety, power system capacity is limited, user's request is growing problem, International Telecommunication Association's tissue has started the technology collecting work of the 4th Generation Mobile Communication System IMT-Advanced (ITU) in February, 2008.In order to respond the technology collection of ITU-R IMT-Advanced, as once having formulated the in the industry cycle 3GPP of 3G UMTS technical standard with strongest influence power, be also unwilling to remain out of the limelight, in March, 2008, launched LTE-Advanced standard process.A characteristic of LTE-A system is in system, to have introduced relay station (RelayStation, RS).The introducing of RS, has improved the coverage of signal to a certain extent, improves power system capacity.
The technical discussion of 3GPP has defined the relaying of two types: Type I Relay (Class1 relaying) and TypeII Relay (type 2 relayings), and explicitly point out LTE-A and will support Type I Relay.Type I Relay has the community ID (Identity) number of oneself, sends synchronizing channel and the reference signal of oneself.For the user terminal of R8, Type I Relay is exactly a base station (eNB).Type I Relay can be arranged on certain fixed position by the network planning, also can be arranged on mobile object as required, such as on bullet train, the relay station under mobile context is just referred to as mobile-relay station.
Movement due to relaying, will certainly occur so when MRS is during near base station, base station can produce to the user under mobile relay strong interference, thereby even the signal of MRS cannot proper communication and the problem of MRS to other users' interference under base station with user by the signal annihilation of base station.
How to solve when MRS is during near base station, base station produces strong interference to the user under MRS, even the signal of MRS is also fallen into oblivion by the signal of base station, thereby cause problem and MRS that user and MRS cannot proper communications to produce the problem of interference to other users under base station, still there is no feasible solution at present.
Summary of the invention
Technical problem to be solved by this invention is: a kind of wireless relay schema management system is provided, when MRS had both avoided the interference of eNB during near cell base station, saved again the energy resource consumption of MRS, maintenance simultaneously can avoid MRS to re-establish and be connected with eNB when park mode is activated to activation with the communication between eNB, thereby reduced customer group and switched the delay bringing, guaranteed user's communication quality.
In addition, the present invention also provides a kind of schema management method of above-mentioned wireless relay schema management system.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A wireless relay schema management system, this system is in order to carry out schema management to mobile relay node MRS; The pattern of described MRS comprises enable mode, park mode; MRS when enable mode, MRS as base station with its under user keep being connected of link, simultaneously keep being connected of link with eNB; MRS is when park mode, and the connection of maintenance and eNB link, disconnects with affiliated user's communication link; Described system comprises:
-channel monitoring module, in order to monitor eNB and MRS subordinate user's interference level during in enable mode at MRS, obtains the first particular value; At MRS, monitor eNB and the former subordinate user's of MRS level of quality in communications during in park mode, obtain the second particular value;
-pattern modular converter, while imposing a condition in order to not meet at described the first particular value or the second particular value, the pattern of conversion MRS.
As a preferred embodiment of the present invention, described pattern modular converter is at MRS during in enable mode, the interference threshold value of described the first particular value and setting is compared, when described the first particular value reaches the interference threshold value of setting, the pattern of MRS is converted to park mode by enable mode; Described pattern modular converter is at MRS during in park mode, the communication quality threshold value of described the second particular value and setting is compared, when described the second particular value does not reach the communication quality threshold value of setting, the pattern of MRS is converted to enable mode by park mode.
As a preferred embodiment of the present invention, described system is that MRS is provided with from being activated to park mode: when MRS near eNB then MRS according to the monitoring of channel quality, obtain a particular value, then the threshold value of particular value and setting is compared and can judge whether other signals that eNB sends have strong jamming to user under MRS; If had, MRS sends sleep request signal to eNB, and MRS receives that after the dormancy confirmation signal being returned by eNB, MRS sends switching command to user, and affiliated user is all switched to eNB, after finishing switching, from enable mode, enters park mode.
As a preferred embodiment of the present invention, described system is that MRS is provided with from dormancy to enable mode: MRS is under park mode, and MRS keeps communicating by letter with the link of eNB, and MRS and user link disconnect; When MRS is away from eNB, MRS measure eNB be not enough to own former under user when the communication service of high-quality is provided, MRS sends request activation signal to eNB, and MRS receives automatic activation after activation confirmation signal, and to eNB, sends signal and trigger eNB user is all switched back to MRS.
As a preferred embodiment of the present invention, described channel monitoring module be arranged at MRS or/and eNB or/and user; Described channel monitoring process by MRS or/and eNB or/and user complete; Described the first particular value, the second particular value, interference threshold value, communication quality threshold value are a kind of in SNR value, user data/signaling number of retransmissions value, circuit loss value.
A wireless relay schema management method, the method is in order to carry out schema management to mobile relay node MRS; The pattern of described MRS comprises enable mode, park mode; MRS when enable mode, MRS as base station with its under user keep being connected of link, simultaneously keep being connected of link with eNB; MRS is when park mode, and the connection of maintenance and eNB link, disconnects with former affiliated user's communication link; Described schema management method comprises the steps:
Channel monitoring step, monitors eNB and MRS subordinate user's interference level during in enable mode at MRS, obtain the first particular value; At MRS, monitor eNB and the former subordinate user's of MRS level of quality in communications during in park mode, obtain the second particular value;
Pattern switch process, does not meet while imposing a condition the pattern of conversion MRS at described the first particular value or the second particular value.
As a preferred embodiment of the present invention, in described pattern switch process, at MRS during in enable mode, the interference threshold value of described the first particular value and setting is compared, when described the first particular value reaches the interference threshold value of setting, the pattern of MRS is converted to park mode by enable mode; At MRS, during in park mode, the communication quality threshold value of described the second particular value and setting is compared, when described the second particular value does not reach the communication quality threshold value of setting, the pattern of MRS is converted to enable mode by park mode.
As a preferred embodiment of the present invention, described channel monitoring step by MRS or/and eNB or/and user complete; Described the first particular value, the second particular value, interference threshold value, communication quality threshold value are a kind of in SNR value, user data/signaling number of retransmissions value, circuit loss value.
As a preferred embodiment of the present invention, at MRS, during in enable mode, the method for management MRS pattern comprises the steps:
(1) MRS monitoring and controlling channels, estimates the interference level of eNB to the current affiliated user of MRS with this;
(2), by the channel situation listening to, MRS draws a particular value; Thereby comparing judgement by this value with setting threshold value, MRS whether needs dormancy;
(3) if judging, MRS need dormancy to eNB, to send sleep request signal;
(4) whether eNB receives after the sleep request signal that MRS sends, analyze and have the ability to receive all users of current MRS subordinate to own switching, if preparation is switched in eNB agreement, goes to step (5);
(5) eNB sends dormancy confirmation signal to MRS;
(6) MRS receives that the rear line of the dormancy confirmation signal of eNB sends signal, notifies user to prepare to switch;
(7) carry out the process that the current affiliated user of MRS is switched to eNB;
(8) after all users' switchings, MRS enters park mode.
As a preferred embodiment of the present invention, at MRS, during in enable mode, the method for management MRS pattern comprises the steps:
(1) channel of eNB monitoring, estimates the interference level of eNB to MRS subordinate user with this;
(2) by the channel situation of monitoring, eNB draws a particular value; Thereby comparing judgement MRS by this value and setting threshold value, eNB whether needs dormancy;
(3) after eNB judgement dormancy, to MRS, send indication sleep signal;
(4) MRS receives the backward eNB feedback acknowledgment of information signal;
(5) eNB enters switching ready mode after receiving confirmation signal;
(6) MRS sends semaphore request user to user and prepares switching;
(7) carry out the process that the current affiliated user of MRS is switched to eNB;
(8) after all users' switchings, MRS enters park mode.
As a preferred embodiment of the present invention, at MRS, during in enable mode, the method for management MRS pattern comprises the steps:
(1) MRS subordinate's user monitoring channel, estimates the interference level of eNB to these users with this;
(2) reporting of user measurement report is to MRS;
(3), according to measurement report, MRS carries out finishing analysis and draws a particular value; Thereby comparing judgement by this value with setting threshold value, MRS whether needs dormancy;
(4) MRS judgement needs after dormancy, to eNB, sends sleep request signal;
(5) after eNB receives request signal, whether judgement has the ability to switch the affiliated current all users of MRS, if eNB judgement agrees to that MRS dormancy enters switching ready mode, goes to step (6);
(6) eNB sends signal designation MRS dormancy to MRS;
(7) MRS notifies user to enter switching ready mode after receiving signal;
(8) carry out the process that the current affiliated user of MRS is switched to eNB;
(9) after all users' switchings, MRS enters park mode.
As a preferred embodiment of the present invention, at MRS, during in park mode, the method for management MRS pattern comprises the steps:
(1) MRS monitoring and controlling channels, estimates the level of communication quality between the former affiliated user of MRS and eNB with this;
(2) by the audible parameter of prison, MRS estimates a particular value; Thereby MRS compares to adjudicate whether need activation by this value and set threshold value;
(3) after MRS judgement activates, to eNB, send request activation signal;
(4) thus eNB receives whether analyze judgement after information agrees to that MRS activates;
(5) if agreeing to MRS activation, eNB judgement to MRS, sends confirmation signal;
(6) MRS activates;
(7) MRS sends signal and triggers eNB preparation switching;
(8) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
(9) eNB enters backward these users of switch mode and sends signal and notify user to prepare to switch;
(10) carry out the process that the affiliated user of former MRS is switched back MRS;
(11) eNB releasing resource after all these users' switchings.
As a preferred embodiment of the present invention, at MRS, during in park mode, the method for management MRS pattern comprises the steps:
(1) eNB monitoring and controlling channels, estimates the level of the former affiliated user communication quality of MRS with this;
(2) by the audible parameter of prison, eNB draws a particular value; Thereby eNB compares to adjudicate whether need activation by this value and set threshold value;
(3) after eNB judgement activates, to MRS, send request activation signal;
(4) MRS activates after receiving signal;
(5) MRS activates backward eNB and sends signal triggering eNB switching;
(6) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
(7) eNB enters backward these users of switch mode and sends signal and notify user to prepare to switch;
(8) carry out the process that the former affiliated user of MRS is switched back MRS;
(9) eNB releasing resource after all users' switchings.
As a preferred embodiment of the present invention, at MRS, during in park mode, the method for management MRS pattern comprises the steps:
(1) the former affiliated user monitoring channel of MRS show that measurement report judges the level of these user communication qualities with this;
(2) reporting of user measurement report is to eNB;
(3) eNb, by the measurement report of reporting of user, estimates and a particular value; Thereby eNB compares to adjudicate whether need activation by this value and set threshold value;
(4) after eNB judgement activates, to MRS, send indication activation signal;
(5) MRS activates after receiving signal;
(6) MRS activates backward eNB and sends signal triggering eNB switching;
(7) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
(8) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
(9) carry out the process that the former affiliated user of MRS is switched back MRS;
(10) eNB releasing resource after all these users' switchings.
Beneficial effect of the present invention is: the wireless relay schema management system and method that the present invention proposes, is set as MRS to activate and two kinds of mode of operations of dormancy.Because mobile-relay system has adopted park mode, i.e. communication between MRS maintenance and eNB, disconnection is simultaneously communicated by letter with user's.As MRS, both avoided like this interference of eNB during near cell base station, saved again the energy resource consumption of MRS, maintenance simultaneously re-establishes and is connected with eNB while having avoided MRS to be transformed into enable mode from park mode with the communication between eNB, thereby reduced customer group and switched the delay bringing, guaranteed MRS subordinate user's communication quality.When MRS is during away from eNB, eNB weakens user's control, and when eNB and the former affiliated user's of MRS communication quality drops to certain level, MRS will be converted into enable mode from dormancy, make the former affiliated user of MRS all from eNB, switch back MRS, to guarantee its proper communication.Thereby eNB has not only expanded coverage and has discharged the resource of distributing to these users.MRS subordinate user's communication quality, the resource of having saved on the other hand eNB have been guaranteed so on the one hand.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of wireless relay schema management system to MRS schema management.
Fig. 2 is that MRS is from being activated to the schematic diagram of park mode.
Fig. 3 a is that MRS self-monitoring judgement MRS is from being activated to the flow chart of park mode.
Fig. 3 b is that eNB monitoring judgement MRS is from being activated to the flow chart of park mode.
Fig. 3 c is that user monitoring MRS judgement MRS is from being activated to the flow chart of park mode.
Fig. 4 is the schematic diagram of MRS from dormancy to enable mode.
Fig. 5 a is the flow chart of MRS self-monitoring judgement MRS from dormancy to enable mode.
Fig. 5 b is the flow chart of eNB monitoring judgement MRS from dormancy to enable mode.
Fig. 5 c is the flow chart of user monitoring MRS judgement MRS from dormancy to enable mode.
Embodiment
Below in conjunction with accompanying drawing, describe the preferred embodiments of the present invention in detail.
Embodiment mono-
Refer to Fig. 1, the present invention proposes a kind of wireless relay schema management system and method, and MRS can have activation and two kinds of mode of operations of dormancy; When MRS is near base station, when phase mutual interference is very strong, MRS can enter park mode from enable mode, and at this moment under MRS, user will all be switched to eNB; When MRS is away from base station, when base station cannot provide good communication quality for user under MRS, MRS can enter enable mode from park mode, and under former MRS, user is all switched back MRS with assurance user's proper communication from eNB again.
The present invention discloses a kind of wireless relay schema management system, and this system is in order to carry out schema management to mobile relay node MRS.The pattern of described MRS comprises enable mode, park mode; MRS when enable mode, MRS as base station with its under user keep being connected of link, simultaneously keep being connected of link with eNB; MRS is when park mode, and the connection of maintenance and eNB link, disconnects with former affiliated user's communication link, and MRS will not send synchronizing channel, broadcast channel, reference signal etc.
Described system comprises channel monitoring module, pattern modular converter.Channel monitoring module, in order to monitor eNB and MRS subordinate user's interference level during in enable mode at MRS, obtains the first particular value; At MRS, monitor eNB and the former subordinate user's of MRS level of quality in communications during in park mode, obtain the second particular value.Described channel monitoring module be arranged at MRS or/and eNB or/and user; Described channel monitoring process by MRS or/and eNB or/and user complete.
When pattern modular converter imposes a condition in order to not meet at described the first particular value or the second particular value, the pattern of conversion MRS.Particularly, described pattern modular converter is at MRS during in enable mode, the interference threshold value of described the first particular value and setting is compared, when described the first particular value reaches the interference threshold value of setting, the pattern of MRS is converted to park mode by enable mode.Described pattern modular converter is at MRS during in park mode, the communication quality threshold value of described the second particular value and setting is compared, when described the second particular value does not reach the communication quality threshold value of setting, the pattern of MRS is converted to enable mode by park mode.Above-mentioned the first particular value, the second particular value, interference threshold value, communication quality threshold value are a kind of in SNR value, user data/signaling number of retransmissions value, circuit loss value.
Described system is that MRS is provided with from being activated to park mode: when MRS is during near eNB, according to channel monitoring being obtained to a particular value, then the threshold value of particular value and setting is compared and can judge whether other signals that eNB sends have strong jamming to user under MRS; If had, MRS sends sleep request signal to eNB, and MRS receives that after the dormancy confirmation signal being returned by eNB, MRS sends switching command to user, and affiliated user is all switched to eNB, after finishing switching, from enable mode, enters park mode.
Described system is that MRS is provided with from dormancy to enable mode: MRS is under park mode, and MRS keeps communicating by letter with the link of eNB, and MRS and user link disconnect; When MRS is during away from eNB, MRS measure eNB be not enough to own former under user when the communication service of high-quality is provided, MRS sends request activation signal to eNB, and MRS receives automatic activation after activation confirmation signal, and to eNB, sends signal and trigger eNB user is all switched back to MRS.
The present invention can be applicable to LTE-A system, and other have applied the communication system of fixing or mobile relay.
More than introduced wireless relay schema management system of the present invention, the present invention, when disclosing above-mentioned wireless relay schema management system, has also disclosed the schema management method of above-mentioned wireless relay schema management system.Below introduce schema management method of the present invention.Described schema management method mainly comprises the steps:
[channel monitoring step] monitors eNB and MRS subordinate user's interference level during in enable mode at MRS, obtain the first particular value; At MRS, monitor eNB and the former subordinate user's of MRS level of quality in communications during in park mode, obtain the second particular value.
[pattern switch process] do not meet while imposing a condition at described the first particular value or the second particular value, the pattern of conversion MRS.At MRS, during in enable mode, the interference threshold value of described the first particular value and setting is compared, when described the first particular value reaches the interference threshold value of setting, the pattern of MRS is converted to park mode by enable mode; At MRS, during in park mode, the communication quality threshold value of described the second particular value and setting is compared, when described the second particular value does not reach the communication quality threshold value of setting, the pattern of MRS is converted to enable mode by park mode.Particular value is measured and is obtained according to the monitoring of MRS (or eNB or user), and its corresponding threshold value can, according to need to the establishing in advance of application scenarios, compare this two value can judge whether the current affiliated user of MRS is subject to the strong interference of eNB.
Below by some specific implementations to MRS the process from enable mode to park mode and from park mode to enable mode describe in detail.
[MRS enters park mode from enable mode]
As shown in Figure 2, in cell coverage area, MRS is near eNB, and phase mutual interference is strengthened, and now MRS enters park mode.Fig. 3 a, 3b, 3c are that MRS enters the flow chart of park mode from enable mode, and its triggering mode is respectively MRS self-monitoring decision pattern, eNB monitoring decision pattern, user monitoring MRS decision pattern.The present invention can adopt any one of three kinds of judgement modes.
Refer to Fig. 3 a, Fig. 3 a has disclosed MRS self-monitoring, triggers MRS and from active module, is transformed into the flow chart of park mode.MRS, by channel monitoring, triggers the conversion of its mode of operation.Flow process by MRS self-monitoring judgement is as follows:
1) first, MRS monitoring and controlling channels, estimates the interference level of eNB to the current affiliated user of MRS with this;
2), by the channel situation listening to, MRS draws a particular value.Thereby MRS compares to adjudicate whether need dormancy by this value and set threshold value;
3) if judging, MRS need dormancy to eNB, to send sleep request signal
4) whether eNB receives after the sleep request signal that MRS sends, analyze and have the ability to receive all users of current MRS subordinate to the switching of oneself;
5) if eNB judgement receives the current affiliated all users of MRS to the switching of oneself, switch preparation, and send dormancy confirmation signal to MRS;
6) MRS receives that the rear line of the dormancy confirmation signal of eNB sends signal, notifies user to prepare to switch;
7) carry out the process that the current affiliated user of MRS is switched to eNB;
8) after all users' switchings, MRS enters park mode.
Refer to Fig. 3 b, Fig. 3 b has disclosed eNB by monitoring and controlling channels, triggers MRS and from active module, is transformed into the flow chart of park mode.The flow process of being monitored and being adjudicated by eNB is as follows:
1) first, eNB monitoring and controlling channels, estimates the interference level of eNB to MRS subordinate user with this;
2) by the channel situation of monitoring, eNB draws a particular value.Thereby eNB compares to adjudicate whether need dormancy by this value and set threshold value.(obtaining in accordance with above-mentioned rule of particular value, threshold value);
3) after eNB judgement dormancy, to MRS, send indication sleep signal;
4) MRS receives the backward eNB feedback acknowledgment of information signal;
5) eNB enters switching ready mode after receiving confirmation signal;
6) MRS sends semaphore request user to user and prepares switching;
7) carry out the process that the current affiliated user of MRS is switched to eNB;
8) after all users' switchings, MRS enters park mode.
Refer to Fig. 3 c, Fig. 3 c has disclosed by user monitoring channel quality, triggers MRS and from active module, is transformed into the flow chart of park mode.Under current by MRS, user carries out feeding back measurement report to MRS after channel measurement, with this measurement report, obtains the disturbed condition that its subordinate user is subject to adjacent eNB, triggers the conversion of MRS mode of operation.The flow process of being adjudicated by user monitoring MRS is as follows:
1) first, user monitoring channel, estimates the interference level of eNB to MRS subordinate user with this;
2) reporting of user measurement report is to MRS;
3), according to measurement report, MRS carries out finishing analysis and draws a particular value.Thereby MRS compares to adjudicate whether need dormancy by this value and set threshold value.(obtaining in accordance with above-mentioned rule of particular value, threshold value);
4) MRS judgement needs after dormancy, to eNB, sends sleep request signal;
5) after eNB receives request signal, whether judgement has the ability to switch the affiliated current all users of MRS, if eNB judgement agrees to that MRS dormancy enters switching ready mode, goes to step (6);
6) eNB sends signal designation MRS dormancy to MRS;
7) MRS notifies user to enter switching ready mode after receiving signal;
8) carry out the process that the current affiliated user of MRS is switched to eNB;
9) after all users' switchings, MRS enters park mode.
[MRS enters enable mode from park mode]
As shown in Figure 4, in cell coverage area, MRS starts away from eNB, and eNB cannot provide good communication quality for user, and MRS is transformed into enable mode from dormancy.Fig. 5 a, 5b, 5c are that MRS enters the flow chart of enable mode from park mode, and its triggering mode is respectively MRS self-monitoring decision pattern, eNB monitoring decision pattern, user monitoring MRS decision pattern.The present invention can adopt any one of three kinds of judgement modes.
Refer to Fig. 5 a, Fig. 5 a has disclosed MRS self-monitoring, triggers MRS and from park mode, is transformed into the flow chart of enable mode.MRS, by channel monitoring, triggers the conversion of its mode of operation.Flow process by MRS self-monitoring judgement is as follows:
1) first, MRS monitoring and controlling channels, estimates the level of communication quality between the former affiliated user of MRS and eNB with this;
2) by the audible parameter of prison, MRS estimates a particular value.Thereby MRS compares to adjudicate whether need activation by this value and set threshold value;
3) after MRS judgement activates, to eNB, send request activation signal;
4) thus eNB receives whether analyze judgement after information agrees to that MRS activates;
5) if agreeing to MRS activation, eNB judgement to MRS, sends confirmation signal;
6) MRS activates;
7) MRS sends signal and triggers eNB preparation switching;
8) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
9) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
10) carry out the process that the former affiliated user of former MRS is switched back MRS;
11) eNB releasing resource after all users' switchings.
Refer to Fig. 5 b, Fig. 5 b has disclosed eNB by monitoring and controlling channels, triggers MRS and from park mode, is transformed into the flow chart of enable mode.The flow process of being monitored and being adjudicated by eNB is as follows:
1) first, eNB monitoring and controlling channels, estimates the level of user communication quality with this;
2) by the audible parameter of prison, eNB draws a particular value.Thereby eNB compares to adjudicate whether need to activate (obtaining in accordance with above-mentioned rule of particular value, threshold value) by this value and set threshold value;
3) after eNB judgement activates, to MRS, send request activation signal;
4) MRS activates after receiving signal;
5) MRS activates backward eNB and sends signal triggering eNB switching;
6) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
7) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
8) carry out the process that the former affiliated user of MRS is switched back MRS;
9) eNB releasing resource after all users' switchings.
Refer to Fig. 5 c, Fig. 5 c has disclosed by user monitoring channel quality, triggers MRS and from park mode, is transformed into the flow chart of enable mode.Under former by MRS, user carries out neighbor cell measurement and feeds back measurement report to eNB, and eNB knows that by this measurement report the level of user's communication quality makes the conversion that judgement triggers MRS mode of operation.The flow process of being adjudicated by user monitoring eNB is as follows:
1) first, the former affiliated user monitoring channel of MRS draws measurement report;
2) the former affiliated reporting of user measurement report of MRS is to eNB;
3) eNB, by the measurement report of reporting of user, estimates and a particular value.Thereby eNB compares to adjudicate whether need to activate (obtaining in accordance with above-mentioned rule of particular value, threshold value) by this value and set threshold value;
4) after eNB judgement activates, to MRS, send indication activation signal;
5) MRS activates after receiving signal;
6) MRS activates backward eNB and sends signal triggering eNB switching;
7) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
8) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
9) carry out the process that the former affiliated user of MRS is switched back MRS;
10) eNB releasing resource after all users' switchings.
In sum, this technological side, to the 4th Generation Mobile Communication System, is applicable to LTE-A system, is also applicable to the wireless communication system that other have used Relay.This invention has following advantage than existing relay swicthing technical scheme:
1, because mobile-relay system has adopted park mode, i.e. communication between MRS maintenance and eNB, disconnection is simultaneously communicated by letter with user's.As MRS, both avoided like this interference of eNB during near cell base station, saved again the energy resource consumption of MRS, maintenance has simultaneously avoided MRS to re-establish and be connected with eNB when park mode is activated to activation with the communication between eNB, thereby reduced customer group and switched the delay bringing, guaranteed the communication quality between user.
2, when MRS is during away from eNB, under eNB is former to MRS, user's control weakens, and when eNB can not provide good communication quality for these users, MRS will be converted into enable mode from dormancy, make user all from eNB, be switched to MRS, to guarantee user's proper communication.Thereby eNB has not only expanded coverage and has discharged the resource of distributing to these users.The former affiliated user's of MRS communication quality, the resource of having saved on the other hand eNB have been guaranteed so on the one hand.
Embodiment bis-
In the present embodiment, schema management system is that MRS is provided with from being activated to park mode: when MRS is during near eNB, MRS can be according to the monitoring of the channel quality of MRS and eNB is obtained to a particular value, then particular value and set threshold value are compared and can judge whether other signals that eNB sends have strong jamming to user under MRS, if had, MRS will send sleep request signal to eNB, MRS receives after the dormancy confirmation signal being returned by eNB, MRS sends switching command to user, affiliated user is all switched to eNB, after finishing switching, from enable mode, enter park mode.
Or the mensuration of described particular value and judgement adopt by eNB oneself monitoring judgement, or pass through reporting of user measurement report to MRS, the mode of being adjudicated by MRS.
Meanwhile, described system is that MRS is provided with from dormancy to enable mode.MRS is under park mode, and MRS keeps communicating by letter with the link of eNB, and MRS and user link disconnect.When MRS away from eNB then, MRS measure eNB be not enough to own former under user when the communication service of high-quality is provided, MRS sends request activation signal to eNB, and MRS receives automatic activation after activation confirmation signal, and to eNB, sends signal and trigger eNB user is all switched back to MRS.
Or the mensuration of described particular value and judgement adopt by eNB oneself monitoring judgement, or pass through reporting of user measurement report to eNB, the mode of being adjudicated by eNB.
When MRS is from park mode is transformed into enable mode, MRS sends to eNB the identification number that signal triggers the user who is connected under enable mode with previous MRS who preserves in eNB search database automatically, notifies these users to prepare to switch.
Under park mode, MRS still keeps communicating by letter with eNB, like this, can avoid MRS need to re-establish and be connected with eNB when park mode is transformed into activation, thereby reduced customer group, switches the delay bringing, and guarantees user's communication quality.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and for those those of ordinary skill in the art, the various parts of the replacement of embodiment and equivalence are known.Those skilled in the art are noted that in the situation that not departing from spirit of the present invention or substantive characteristics, and the present invention can be with other form, structure, layout, ratio, and realizes with other assembly, material and parts.In the situation that not departing from the scope of the invention and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (12)
1. a wireless relay schema management system, is characterized in that: this system is in order to carry out schema management to mobile relay node MRS;
The pattern of described MRS comprises enable mode, park mode;
MRS when enable mode, MRS as base station with its under user keep being connected of link, simultaneously keep being connected of link with eNB;
MRS is when park mode, and the connection of maintenance and eNB link, disconnects with former affiliated user's communication link;
Described system comprises:
-channel monitoring module, in order to monitor eNB and MRS subordinate user's interference level during in enable mode at MRS, obtains the first particular value; At MRS, monitor eNB and the former subordinate user's of MRS level of quality in communications during in park mode, obtain the second particular value;
-pattern modular converter, while imposing a condition in order to not meet at described the first particular value or the second particular value, the pattern of conversion MRS;
Wherein, described system is that MRS is provided with from being activated to park mode: when MRS is during near eNB, according to the monitoring of channel quality, obtain a particular value, then the threshold value of particular value and setting is compared and can judge whether eNB has strong jamming to user under MRS; If had, MRS sends sleep request signal to eNB, and MRS receives that after the dormancy confirmation signal being returned by eNB, MRS sends switching command to user, and affiliated user is all switched to eNB, after finishing switching, from enable mode, enters park mode; Or the mensuration of described particular value and judgement adopt by eNB oneself monitoring judgement, or pass through reporting of user measurement report to MRS, the mode of being adjudicated by MRS;
Described system is that MRS is provided with from dormancy to enable mode: MRS is under park mode, and MRS keeps communicating by letter with the link of eNB, and MRS and user link disconnect; When MRS is during away from eNB, according to channel quality, monitoring measures the communication service that eNB is not enough to provide high-quality to user under own former to MRS, now MRS sends request activation signal to eNB, MRS receives automatic activation after activation confirmation signal, and to eNB, sends signal and trigger eNB user is all switched back to MRS.
2. wireless relay schema management system according to claim 1, is characterized in that:
Described pattern modular converter, compares the interference threshold value of described the first particular value and setting during in enable mode at MRS, when described the first particular value reaches the interference threshold value of setting, the pattern of MRS is converted to park mode by enable mode;
Described pattern modular converter is at MRS during in park mode, the communication quality threshold value of described the second particular value and setting is compared, when described the second particular value does not reach the communication quality threshold value of setting, the pattern of MRS is converted to enable mode by park mode.
3. wireless relay schema management system according to claim 1, is characterized in that:
Described channel monitoring module be arranged at MRS or/and eNB or/and user; Described channel monitoring process by MRS or/and eNB or/and user complete;
Described the first particular value, the second particular value, interference threshold value, communication quality threshold value are a kind of in SNR value, user data/signaling number of retransmissions value, circuit loss value.
4. a wireless relay schema management method, is characterized in that: the method is in order to carry out schema management to mobile relay node MRS;
The pattern of described MRS comprises enable mode, park mode;
MRS when enable mode, MRS as base station with its under user keep being connected of link, simultaneously keep being connected of link with eNB;
MRS is when park mode, and the connection of maintenance and eNB link, disconnects with former affiliated user's communication link;
Described schema management method comprises the steps:
Channel monitoring step, monitors eNB and MRS subordinate user's interference level during in enable mode at MRS, obtain the first particular value; At MRS, monitor eNB and the former subordinate user's of MRS level of quality in communications during in park mode, obtain the second particular value;
Pattern switch process, does not meet while imposing a condition the pattern of conversion MRS at described the first particular value or the second particular value;
Wherein, when MRS is during near eNB, according to the monitoring of channel quality, obtain a particular value, then the threshold value of particular value and setting is compared and can judge whether eNB has strong jamming to user under MRS; If had, MRS sends sleep request signal to eNB, and MRS receives that after the dormancy confirmation signal being returned by eNB, MRS sends switching command to user, and affiliated user is all switched to eNB, after finishing switching, from enable mode, enters park mode;
When MRS is under park mode, MRS keeps communicating by letter with the link of eNB, and MRS and user link disconnect; When MRS is during away from eNB, according to channel quality, monitoring measures the communication service that eNB is not enough to provide high-quality to user under own former to MRS, now MRS sends request activation signal to eNB, MRS receives automatic activation after activation confirmation signal, and to eNB, sends signal and trigger eNB user is all switched back to MRS.
5. wireless relay schema management method according to claim 4, is characterized in that:
In described pattern switch process, at MRS, during in enable mode, the interference threshold value of described the first particular value and setting is compared, when described the first particular value reaches the interference threshold value of setting, the pattern of MRS is converted to park mode by enable mode;
At MRS, during in park mode, the communication quality threshold value of described the second particular value and setting is compared, when described the second particular value does not reach the communication quality threshold value of setting, the pattern of MRS is converted to enable mode by park mode.
6. wireless relay schema management method according to claim 4, is characterized in that:
Described channel monitoring step by MRS or/and eNB or/and user complete;
Described the first particular value, the second particular value, interference threshold value, communication quality threshold value are a kind of in SNR value, user data/signaling number of retransmissions value, circuit loss value.
7. according to the wireless relay schema management method one of claim 4 to 6 Suo Shu, it is characterized in that:
At MRS, during in enable mode, the method for management MRS pattern comprises the steps:
(1) MRS monitoring and controlling channels, estimates the interference level of eNB to the current affiliated user of MRS with this;
(2), by the channel situation listening to, MRS draws a particular value; Thereby comparing judgement by this value with setting threshold value, MRS whether needs dormancy;
(3) if judging, MRS need dormancy to eNB, to send sleep request signal;
(4) whether eNB receives after the sleep request signal that MRS sends, analyze and have the ability to receive all users of current MRS subordinate to own switching, if preparation is switched in eNB agreement, goes to step (5);
(5) eNB sends dormancy confirmation signal to MRS;
(6) MRS receives that the rear line of the dormancy confirmation signal of eNB sends signal, notifies user to prepare to switch;
(7) carry out the process that the current affiliated user of MRS is switched to eNB;
(8) after all users' switchings, MRS enters park mode.
8. according to the wireless relay schema management method one of claim 4 to 6 Suo Shu, it is characterized in that:
At MRS, during in enable mode, the method for management MRS pattern comprises the steps:
(1) eNB monitoring and controlling channels, estimates the interference level of eNB to MRS subordinate user with this;
(2) by the channel situation of monitoring, eNB draws a particular value; Thereby comparing judgement MRS by this value and setting threshold value, eNB whether needs dormancy;
(3) after eNB judgement dormancy, to MRS, send indication sleep signal;
(4) MRS receives the backward eNB feedback acknowledgment of information signal;
(5) eNB enters switching ready mode after receiving confirmation signal;
(6) MRS sends semaphore request user to user and prepares switching;
(7) carry out the process that the current affiliated user of MRS is switched to eNB;
(8) after all users' switchings, MRS enters park mode.
9. according to the wireless relay schema management method one of claim 4 to 6 Suo Shu, it is characterized in that:
At MRS, during in enable mode, the method for management MRS pattern comprises the steps:
(1) user monitoring channel, obtains measurement report and estimates the interference level of eNB to MRS subordinate user with this;
(2) reporting of user measurement report is to MRS;
(3), according to measurement report, MRS carries out finishing analysis and draws a particular value; Thereby comparing judgement by this value with setting threshold value, MRS whether needs dormancy;
(4) MRS judgement needs after dormancy, to eNB, sends sleep request signal;
(5) after eNB receives request signal, whether judgement has the ability to switch the affiliated current all users of MRS, if eNB judgement agrees to that MRS dormancy enters switching ready mode, goes to step (6);
(6) eNB sends signal designation MRS dormancy to MRS;
(7) MRS notifies user to enter switching ready mode after receiving signal;
(8) carry out the process that the current affiliated user of MRS is switched to eNB;
(9) after all users' switchings, MRS enters park mode.
10. according to the wireless relay schema management method one of claim 4 to 6 Suo Shu, it is characterized in that:
At MRS, during in park mode, the method for management MRS pattern comprises the steps:
(1) MRS monitoring and controlling channels, estimates the level of communication quality between the former affiliated user of MRS and eNB with this;
(2) by the audible parameter of prison, MRS estimates a particular value; Thereby MRS compares to adjudicate whether need activation by this value and set threshold value;
(3) after MRS judgement activates, to eNB, send request activation signal;
(4) thus eNB receives whether analyze judgement after information agrees to that MRS activates;
(5) if agreeing to MRS activation, eNB judgement to MRS, sends confirmation signal;
(6) MRS activates;
(7) MRS sends signal and triggers eNB preparation switching;
(8) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
(9) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
(10) carry out the process that the affiliated user of former MRS is switched back MRS;
(11) eNB releasing resource after all users' switchings.
11. according to the wireless relay schema management method one of claim 4 to 6 Suo Shu, it is characterized in that:
At MRS, during in park mode, the method for management MRS pattern comprises the steps:
(1) eNB monitoring and controlling channels, estimates the level of user communication quality with this;
(2) by the audible parameter of prison, eNB draws a particular value; Thereby eNB compares to adjudicate whether need activation by this value and set threshold value;
(3) after eNB judgement activates, to MRS, send request activation signal;
(4) MRS activates after receiving signal;
(5) MRS activates backward eNB and sends signal triggering eNB switching;
(6) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
(7) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
(8) carry out the process that the former affiliated user of MRS is switched back MRS;
(9) eNB releasing resource after all these users' switchings.
12. according to the wireless relay schema management method one of claim 4 to 6 Suo Shu, it is characterized in that:
At MRS, during in park mode, the method for management MRS pattern comprises the steps:
(1) the former affiliated user monitoring channel of MRS, judges the level of user communication quality with this;
(2) reporting of user measurement report is to eNB;
(3) eNb, by the measurement report of reporting of user, estimates and a particular value; Thereby eNB compares to adjudicate whether need activation by this value and set threshold value;
(4) after eNB judgement activates, to MRS, send indication activation signal;
(5) MRS activates after receiving signal;
(6) MRS activates backward eNB and sends signal triggering eNB switching;
(7) eNB starts the previous user profile being connected with MRS of search database arrangement and enters preparation switch mode after triggering;
(8) eNB enters switch mode rear line and sends signal and notify user to prepare to switch;
(9) carry out the process that the former affiliated user of MRS is switched back MRS;
(10) eNB releasing resource after all users' switchings.
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| CN102158920A (en) * | 2011-05-13 | 2011-08-17 | 新邮通信设备有限公司 | Selecting method of target base station during switching of base station and base station |
| CN102857945A (en) * | 2011-06-28 | 2013-01-02 | 中兴通讯股份有限公司 | Relay node awaking method and system |
| CN103765943A (en) * | 2011-09-28 | 2014-04-30 | 富士通株式会社 | Activation of supplementary transmission unit |
| CN102932859B (en) * | 2012-09-28 | 2015-06-10 | 三维通信股份有限公司 | System and method for switching long term evolution (LTE)-advanced mobile relay (MR) and eNode B |
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| CN1395380A (en) * | 2001-06-29 | 2003-02-05 | 株式会社Ntt都科摩 | Mobile base station operation control method and mobile base station |
| CN1477887A (en) * | 2002-06-24 | 2004-02-25 | 日本电气株式会社 | Mobile communication system, radio exchange method, mobile base station and mobile terminal |
| EP2051458A2 (en) * | 2007-10-18 | 2009-04-22 | Fujitsu Ltd. | Communication control apparatus and method for handover processing in moving environments |
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| CN1395380A (en) * | 2001-06-29 | 2003-02-05 | 株式会社Ntt都科摩 | Mobile base station operation control method and mobile base station |
| CN1477887A (en) * | 2002-06-24 | 2004-02-25 | 日本电气株式会社 | Mobile communication system, radio exchange method, mobile base station and mobile terminal |
| EP2051458A2 (en) * | 2007-10-18 | 2009-04-22 | Fujitsu Ltd. | Communication control apparatus and method for handover processing in moving environments |
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