CN102111855B - Communication system and method for updating system information in communication system - Google Patents
Communication system and method for updating system information in communication system Download PDFInfo
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- CN102111855B CN102111855B CN200910252541.2A CN200910252541A CN102111855B CN 102111855 B CN102111855 B CN 102111855B CN 200910252541 A CN200910252541 A CN 200910252541A CN 102111855 B CN102111855 B CN 102111855B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a communication system and a method for updating system information in the communication system. The communication system comprises a control station and a subordinate station. The control station adjusts a transmission parameter or a transmission manner of the altered or all the system information in an active way or in a passive way; the control station transmits the altered or all the system information to one or more subordinate stations according to the adjusted transmission parameter or the transmission manner. The subordinate station receives and reads the system information. By application of the invention, the subordinate station is capable of acquiring, or acquiring as fast as possible and applying the up-to-date system configuration information or parameter, the normal work of the subordinate station in a wake-up mode or a sleep mode when the system configuration information or parameter is altered is guaranteed, and the system performance is improved.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to the update method of system information in a kind of communication system and communication system.
Background technology
In wireless communication system, control station (for example base station) is the elementary cell that forms radio honeycomb community, complete communication and management function between mobile radio communication and mobile communication subscriber, it for example, communicates by Uplink/Downlink and subordinate station (terminal), wherein, descendingly refer to that control station arrives the direction at subordinate station, and the stand direction of control station of the up subordinate of referring to.A plurality of subordinaties station can send data to control station by up link simultaneously, also can from control station, receive data by down link simultaneously.Adopting control station to realize in the wireless communication system of wireless resource scheduling control, the dispatching distribution of system wireless resource is completed by control station.
In wireless communication system, in order to guarantee that subordinate stands, can complete community selection and system access in a kind of efficient mode, control station need to utilize system configuration information more crucial in the periodic transmitting time of downlink broadcast control channel of system or the set of parameter conventionally, the for example use of superframe head (Super-Frame Header is called for short SFH) in 802.16m system.According to the difference of operation scenario, operator's possibility some system configuration information of irregular change or parameter, and during this period, subordinate need to upgrade and apply these necessary system configuration information or parameters in station timely, in order to avoid affect its normal transfer of data.
In addition, in order to realize energy-conservation object, in most movements or wireless communication protocol, all provide dormancy (Sleep) pattern; The object of this park mode is to reduce the energy consumption at mobile subordinate station, and reduces the use to service control station air interface resource.Wherein, Sleep pattern is that subordinate stands in the designated period of consulting in advance, supspend a kind of state of service control station service,, in the sleeping window at the mobile subordinate station under Sleep pattern, control station can not given described subordinate station by any type of downlink business of clean culture.
For most wireless communication system, be relatively-stationary the dispatching cycle of system configuration information or parameter, for example in 802.16m system, system information is broadcasted in SFH, wherein, superframe head is divided into again main superframe head (Primary-SFH, be called for short P-SFH) and auxiliary superframe head (Secondary-SFH is called for short S-SFH); Wherein, S-SFH is further divided into again a plurality of attached bags, for example, attached bag 1 (SP1) is to attached bag 3 (SP3), most system information sends in these three attached bags of S-SFH, and these attached bags are not that each superframe has, and specifically where, send the dispatching cycle that these attached bags depend on the predefined different attached bags of control station.
Therefore, at control station, carry out the reproducting periods of system configuration information or parameter, due to subordinate's decoding error of standing, or the restriction of described system configuration information or parameter dispatching cycle, and subordinate is stood, can not receive in time and apply system configuration information or the parameter after change, finally may affect the normal data interaction between itself and control station; In addition, during the renewal of described system configuration information or parameter may occur in the sleeping window at the one or more subordinaties station under Sleep pattern, now, described subordinate cannot carry out the renewal of system configuration information or parameter in station, finally cause described subordinate to stand in ensuing intercepting (Listening) window and cannot obtain as early as possible up-to-date system configuration information or parameter, thereby also may affect the normal operation at subordinate station.
Summary of the invention
Technical problem to be solved by this invention is, the update method of system configuration information in a kind of communication system and communication system is provided, in order to solve in prior art, because standing, subordinate cannot receive in time and apply the system configuration information after change, and the problem that causes subordinate to stand and cannot work.
In order to address the above problem, the present invention proposes a kind of update method for communication system system information, comprise the steps:
Control station adopts initiatively or the mode of passive adjustment, and transmission parameter or the send mode of system information after changing or all are adjusted;
Control station is stood and is sent after change or all system informations to one or more subordinaties according to the transmission parameter after adjusting or send mode.
Further, described control station is after definite system information changes, and adopts the mode of active accommodation, and the transmission parameter of the system information after changing is adjusted.
Further, whether described control station, by judgement, when described system information changes, exists in the sleep window of one or more subordinaties station under sleep pattern, determines the duration that adopts described active accommodation mode;
The active accommodation mode that described control station adopts, comprising: control station, during the listen window at described one or more subordinaties station or beyond listen window, is adjusted dispatching cycle or transmission frequency and/or the code rate of described system information.
Further, when described control station adopts the mode of passive adjustment, control station is according to the feedback information from subordinate station, and transmission parameter or the send mode of system information after changing or all are adjusted; Wherein, described feedback information comprises: channel quality indication (CQI) information and/or system information are upgraded failed indication information.
Further, described update method further comprises: described feedback information is that system information is upgraded failed indication information;
Subordinate stands under the condition that can not be correctly decoded the system configuration information that changes or parameter, or subordinate station discovery system information from sleep window is waken up changes, and to control station, feeds back described system information and upgrades failed indication information;
Described control station, according to the stand indication information of renewal failure of feedback of the correct subordinate who receives, is adjusted dispatching cycle or transmission frequency and/or the code rate of described system information; Or, to subordinate, stand and send clean culture or the broadcast that comprises the system information after change.
Further, described subordinate station is by shared ascending physical signal control channel, and/or medium access control message upgrades failed indication information to control station feedback; The failed indication information of described renewal, comprises system configuration information or parameter and/or the subordinate information of standing.
Further, described update method further comprises: described feedback information is channel quality indication (CQI) information;
Subordinate station is according to the feedback request of control station, and the feedback message by long-term or short-term is reported channel quality indication (CQI) information in interval sometime to control station;
The CQI feedback information that control station is stood from a plurality of different subordinaties in interval described in collecting sometime, and calculating according to these CQI feedback informations, and table look-up and export dispatching cycle or transmission frequency and/or the code rate of system configuration information now or parameter;
Control station is according to dispatching cycle or the transmission frequency of output, and/or code rate is stood and sent follow-up system configuration information or parameter to subordinate.
Wherein, described control station is determined dispatching cycle or transmission frequency in accordance with the following steps according to channel quality indication (CQI) feedback information at subordinate station, and/or code rate:
Control station obtains described subordinate and stands in Times of Feedback (n) and the corresponding CQI feedback index (Idx) in the specific time interval, obtains described subordinate and stands in the average CQI feedback index (Idx in the described time interval
avr);
Obtain the average CQI feedback index (Idx that m subordinate stood in each comfortable specific time interval
avr1, Idx
avr2..., Idx
avrm), and obtain all subordinaties and stand in the average CQI feedback index (IDX in the described time interval
avr);
Control station utilization is through rounding the average CQI feedback index (IDX of operation
avr), according to specific mapping form, carry out table lookup operation, long-term dispatching cycle or the transmission frequency of output system information, and/or code rate.
Further, described transmission parameter comprises: dispatching cycle or transmission frequency and/or code rate.
Further, described system information, comprise for network reentry, network initially enters and system configuration information or the parameter of Network finding.
Further, described control station comprises following one or more network elements: grand control station, microcontroller station, slight control station, relay station; Described subordinate station comprises following one or more network elements: terminal, relay station, microcontroller station, slightly control station.
The present invention also provides a kind of communication system, comprising:
Control station, adopts initiatively or the mode of passive adjustment, and transmission parameter or the send mode of system information after changing or all are adjusted; According to the transmission parameter after adjusting or send mode, to one or more subordinaties, stand and send after change or all system informations;
Subordinate station, for receiving and understand system information.
Further, described subordinate station, also for not being correctly decoded under the condition of the system configuration information that changes or parameter, or subordinate station discovery system configuration information or parameter from dormancy (Sleep) window wakes up change, to control station, feed back described system configuration information or parameter is upgraded failed indication information;
Correspondingly, described control station adopts the mode of passive adjustment, according to the stand indication information of renewal failure of feedback of the subordinate of correct reception, adjusts dispatching cycle or transmission frequency and/or the code rate of described system information; Or, to subordinate, stand and send clean culture or the broadcast that comprises the system information after change.
Further, described subordinate station, also for according to the feedback request of control station, the feedback message by long-term or short-term is reported channel quality indication (CQI) information in interval sometime to control station;
Correspondingly, described control station is also for adopting the mode of passive adjustment, described in collection sometime in interval from the CQI feedback information at a plurality of different subordinaties station, and calculate and table look-up and export dispatching cycle or transmission frequency and/or the code rate of system configuration information now or parameter according to these CQI feedback informations; Control station is according to dispatching cycle or the transmission frequency of output, and/or code rate is stood and sent follow-up system configuration information or parameter to subordinate.
By above-mentioned at least one scheme of the present invention, control station is by carrying out the reproducting periods of system configuration information or parameter at wireless network, or between the Listening window phase at one or more subordinaties station, adjust dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate, subordinate stood can obtain or fast as far as possible obtain and apply up-to-date described system configuration information or parameter, thereby solved in prior art because subordinate station cannot receive the problem that system configuration information after change or parameter cause subordinate to stand and cannot work in time, guaranteed in wake up or park mode under subordinate stand in the normal operation in the situation of system configuration information or parameter change, improved systematic function.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.
Fig. 1 is according to the flow chart of the update mode of the first system configuration information of the embodiment of the present invention or parameter;
Fig. 2 be take the schematic diagram of renewal process of the first system configuration information that 802.16m system is example or parameter;
Fig. 3 is according to the flow chart of the update mode of the second system configuration information of the embodiment of the present invention or parameter;
Fig. 4 is according to the flow chart of the update mode of the third system configuration information of the embodiment of the present invention or parameter;
Fig. 5 is according to determine the algorithm flow chart of best transmission frequency or dispatching cycle and/or code rate in the third update mode of the embodiment of the present invention according to CQI.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
In prior art, due to stand decoding error or in park mode of subordinate, or due to the restriction of system configuration information or parameter dispatching cycle, and being stood, subordinate can not receive in time and apply system configuration information or the parameter after change, thereby the problem that causes subordinate to stand and cannot work, the embodiment of the present invention provides the update method of system configuration information in a kind of communication system and communication system or parameter.
In the present invention, control station determines that in the time of need to changing its system configuration information or parameter, described control station increases the transmission frequency of corresponding system configuration information or parameter automatically, or reduces the dispatching cycle of corresponding system configuration information or parameter; Or when subordinate station cannot be correctly decoded system configuration information or parameter, to control station, feed back described system configuration information or parameter is upgraded failed indication information, the transmission frequency of control station adjustment System configuration information or parameter or dispatching cycle, and/or code rate, or the send mode of adjustment System configuration information or parameter; Or the CQI of the long-term or short-term of control station based on from a plurality of subordinaties station feeds back, and adjusts dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate.
The present invention, for the update method of communication system system information, comprises the steps:
After control station determines that system information changes, adopt the mode of active accommodation, the transmission parameter of the system information after changing is adjusted; Or adopt the mode that feedback information adjusts of standing according to subordinate, transmission parameter or the send mode of system information after changing or all are adjusted;
Control station is stood and is sent after change or all system informations to subordinate according to the transmission parameter after adjusting or send mode.
Wherein, described transmission parameter comprises: dispatching cycle or transmission frequency and/or code rate.
Wherein, described system information, comprises system configuration information or parameter, for example for network reentry, network initially enters and Network finding and other necessary system configuration parameter.
Communication system of the present invention, comprising:
Control station, after changing in definite system information, adopts the mode of active accommodation, and the transmission parameter of the system information after changing is adjusted; Or adopt the mode that feedback information adjusts of standing according to subordinate, transmission parameter or the send mode of system information after changing or all are adjusted; According to the transmission parameter after adjusting or send mode, to subordinate, stand and send after change or all system informations.
Subordinate station, for receiving and understand system information.
Further, described subordinate station, also under the condition not being correctly decoded the system configuration information that changes or parameter or subordinate station, from Sleep window wakes up, find that system configuration information or parameter change, to control station, feed back described system configuration information or parameter is upgraded failed indication information.Correspondingly, described control station, according to the stand indication information of renewal failure of feedback of the subordinate of correct reception, adjusts dispatching cycle or transmission frequency and/or the code rate of described system information; Or, to subordinate, stand and send clean culture or the broadcast that comprises the system information after change.
Further, described subordinate station, also for according to the feedback request of control station, the feedback message by long-term or short-term is reported channel quality indication (CQI) information in interval sometime to control station.Correspondingly, described control station also for described in collecting sometime in interval from the CQI feedback information at a plurality of different subordinaties station, and calculate and table look-up and export dispatching cycle or transmission frequency and/or the code rate of system configuration information now or parameter according to these CQI feedback informations; Control station is according to dispatching cycle or the transmission frequency of output, and/or code rate is to subordinate stand transmitting system configuration information or parameter.
The update method of system information of the present invention, the difference according to the mode of adjustment, can be divided into three kinds of update modes.
The first update mode:
Control station, in following two kinds of situations, adopts the first update mode to adjust the transmission parameter of described system information, comprising:
The first situation, carries out the reproducting periods of system configuration information or parameter at network side, control station adopts active accommodation mode to adjust dispatching cycle or transmission frequency and/or the code rate of described system configuration information or parameter;
The reproducting periods of described system configuration information or parameter, refers to the time range that the one or more timers in control station are controlled; Wherein, described time range refers to the moment changing from system configuration information or parameter until up-to-date system configuration information or parameter is all applied to institute's elapsed time system.
The second situation, when network side system configuration information or parameter change, and one or more subordinaties station in network is in Sleep window, control station adopts active accommodation mode, during the listen window at ensuing described one or more subordinaties station or beyond listen window, adjust dispatching cycle or transmission frequency and/or the code rate of described system configuration information or parameter.
Further, above-mentioned control station is adjusted dispatching cycle or transmission frequency and/or the code rate of described system configuration information or parameter, comprising:
Increase the transmission frequency of system configuration information or parameter or the dispatching cycle of reducing system configuration information or parameter; Wherein, described system configuration information or parameter refer to the current system configuration information changing or parameter.
The second update mode
Subordinate stands under the condition that can not be correctly decoded the system configuration information that changes or parameter, or subordinate station is from sleeping window wakes up, find that system configuration information or parameter change, to control station, feed back described system configuration information or parameter is upgraded failed indication information;
Control station is when correctly receiving the described feedback indication information of standing from subordinate, control station can increase the transmission frequency of corresponding system configuration information or parameter, or reduce the dispatching cycle of corresponding system configuration information or parameter, or standing to send to subordinate comprises system configuration information or the clean culture of parameter or the message of broadcast after change, or carry out system configuration information or the parameter that other associative operation notifies subordinate to stand after changing.
Wherein, described subordinate station, to the renewal failure indication information of control station feedback, can comprise: system configuration information or parameter, and/or subordinate's information of standing.
Wherein, described subordinate station is from sleeping window wakes up, if find that system configuration information or parameter change, and can feed back the failed indication information of described renewal to control station in listen window.
Wherein, the renewal failure indication information that described system configuration information or parameter are fed back to control station in described subordinate station comprises one of following at least two kinds of modes or their combination:
Subordinate station can be fed back to control station by shared ascending physical signal control channel (such as a reserved code word in Ranging channel); Or,
Subordinate can control by medium access (MAC) message in station and feed back to control station.
The third update mode
Step 1, subordinate stands according to the feedback request of control station, and the feedback message by long-term or short-term is reported channel quality indication (CQI) information in interval sometime to control station;
Step 2, control station collect described in sometime in interval from the CQI feedback information at a plurality of different subordinaties station, and the input using these CQI feedback informations merging as a certain algoritic module;
Step 3, described algoritic module is exported now best system configuration information or dispatching cycle or the transmission frequency of parameter, and/or code rate.
Step 4, control station is adjusted dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate, and according to dispatching cycle or the transmission frequency of algoritic module output, and/or code rate is to subordinate stand transmitting system configuration information or parameter.
Wherein, control station is adjusted dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate, comprising: increase or reduce dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate.
Wherein, described code rate refers to the product of original coding speed and number of repetition; The code rate that increases or reduce described system configuration information or parameter comprises: the original coding speed and/or the number of repetition that increase or reduce described system configuration information or parameter.
Wherein, described system configuration information or parameter comprise: for network, reentry, network initially enters and Network finding and other necessary system configuration parameter.
In above-mentioned three kinds of update modes, control station can increase the transmission frequency of corresponding system configuration information or parameter, or reduce the dispatching cycle of corresponding system configuration information or parameter, or stand and send the clean culture comprise recent systems configuration information or parameter or the message of broadcast to subordinate, can guarantee that subordinate under awakening mode stands in described system configuration information or parameter and repeatedly receives system update message or the signaling from control station before coming into force, thereby increase the stand probability of system configuration information or the parameter of successfully obtaining change of described subordinate; Meanwhile, can guarantee that subordinate under Sleep pattern stands in obtains and applies up-to-date described system configuration information or parameter soon as far as possible in its listening interval.
In the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Below respectively above-mentioned three kinds of update modes are described in detail by reference to the accompanying drawings.
Embodiment mono-
Control station in both cases, is adjusted dispatching cycle or the transmission frequency of corresponding system configuration information or parameter, and Fig. 1 is according to the flow chart of the update mode of the first system configuration information of the embodiment of the present invention or parameter.As shown in Figure 1, according to the update method of the system configuration information of the embodiment of the present invention or parameter, mainly comprise the following steps:
Step S101: based on certain strategy, control station is determined will change its part or all of system configuration information or parameter, determines a specific time interval (T) simultaneously;
Step S102: all subordinaties station in the definite now sleeping window under Sleep pattern of control station, calculate each subordinate station (i) simultaneously and start to need elapsed time (Ti) until start its listen window from current time;
Step S103: control station is from the above-mentioned all time interval (T
i) in choose maximum time interval (T wherein
max);
Step S104: control station is at the specific time interval (T+T
max) the interior system configuration information of change or the transmission frequency of parameter of increasing;
Step S105: through the above-mentioned time interval (T+T
max) afterwards, control station reduces the transmission frequency of described system configuration information or parameter, and return to original transmission frequency.
With reference to the update mode of the present embodiment, also capable of regulating dispatching cycle or adjustment transmission frequency and code rate, or adjustment dispatching cycle and code rate.
Embodiment bis-
In specific implementation process, with the example that is updated to of the system configuration information of 802.16m or parameter, as shown in Figure 2, then further illustrate the specific implementation process of the first update mode.
Suppose, in auxiliary superframe head (S-SFH): the initial schedule cycle of attached bag 1 (SP1) is 2 superframes; The initial schedule cycle of attached bag 2 (SP2) is 4 superframes; The initial schedule cycle of attached bag 3 (SP3) is 4 superframes.In addition, subordinate stand 1 with subordinate stand 2 works at present in Sleep pattern.
Particularly, the renewal process of its system configuration information or parameter comprises the following steps:
Step 201, control station is determined and need to be changed system configuration information or the parameter in attached bag 2, attached bag 3 at n superframe, determines that the specific time interval is T simultaneously.
Particularly, control station can change attached bag 1 as required, attached bag 2, and any one in attached bag 3 or two attached bags, or change this three attached bags simultaneously.
Particularly, described time interval T refers to, the time that changes and experience while being finally applied to system from system configuration information or parameter being determined by control station.
Step 202, control station determine now under Sleep pattern the station of the subordinate in sleeping window for subordinate stand 1 and subordinate stand 2, subordinate stands 1 since n superframe, until start its listen window, needs through 1 superframe (T
1), and subordinate stands 2 since n superframe, until start its listen window, needs through 2 superframe (T
2).
Particularly, at n superframe initial time, may not exist any under Sleep pattern the subordinate in sleeping window station, now direct skips steps 202; Or there are three or three above subordinate stations in sleeping window.
Particularly, to need elapsed time may not be an integer superframe (1 superframe comprises 4 radio frames) since n superframe initial time until start its listen window for subordinate station, but an integer radio frames, therefore, the unit in the described time interval can be superframe or radio frames.
Step 203, control station from step 202, draw corresponding to subordinate stand 1 with stand 2 the time interval (T of subordinate
1with T
2) in choose maximum time interval (T wherein
2).
Step 204, control station is at the time interval (T+T of 7 802.16m superframes (namely 28 radio frames)
2) the interior system configuration information of change or the transmission frequency of parameter (described attached bag 2 and attached bag 3) of increasing; Particularly, the instantaneous dispatching cycle of attached bag 1 is identical with the initial schedule cycle, all changes into 2 superframes the instantaneous dispatching cycle of attached bag 2 and attached bag 3.
Step 205, passes through definite time interval (from n superframe to n+6 superframe) of step 204 afterwards, and control station reduces the transmission frequency of attached bag 2 and attached bag 3; Particularly, full recovery dispatching cycle of attached bag 2 and attached bag 3 is 4 initial superframes.
Embodiment tri-
In this embodiment, subordinate stands under the condition that can not be correctly decoded the system configuration information that changes or parameter, or when subordinate station discovery system configuration information or parameter from sleeping window wakes up change, to control station, feed back described system configuration information or parameter is upgraded failed indication information;
When control station correctly receives the described feedback indication information of standing from subordinate, control station can increase the transmission frequency of corresponding system configuration information or parameter, or reduce the dispatching cycle of corresponding system configuration information or parameter, or to subordinate, stand and send the clean culture comprise recent systems configuration information or parameter or the message of broadcast, or carry out other associative operation.
Fig. 3 is according to the flow chart of the update mode of the second system configuration information of the embodiment of the present invention or parameter; According to the update method of the system configuration information of the embodiment of the present invention or parameter, mainly comprise the following steps:
Step S301: subordinate stands and determines system configuration information or the parameter that it can not correct decoding changes, or subordinate station discovery system configuration information or parameter from sleeping window wakes up change;
Step S302: described system configuration information is fed back or parameter is upgraded failed information by shared ascending physical signal control channel or MAC message to control station in subordinate station;
Step S303: the system configuration information that control station increase changes or the transmission frequency of parameter, or reduce the dispatching cycle of corresponding system configuration information or parameter, or to subordinate, stand and send message clean culture or broadcast that comprises recent systems configuration information or parameter, or carry out other associative operation.
In specific implementation process, subordinate can determine when system configuration information or parameter change by the clear and definite Indication message from control station or control signal in station, or current whether changing.
Particularly, when system configuration information or parameter change, if subordinate station does not have correct described system configuration information or the parameter of solving, such as cyclic redundancy check (CRC) (CRC) mistake, subordinate upgrades failed indication information by feed back described system configuration information or parameter to control station in station.
Particularly, described system configuration information is fed back or parameter is upgraded failed indication information by shared ascending physical signal control channel to control station in subordinate station, comprise that all subordinaties station can be used fixing same physics running time-frequency resource to send described indication information, and described indication information can carry one or more indicator sequences.
Particularly, described system configuration information is fed back or parameter is upgraded failed indication information by MAC message to control station in subordinate station, comprise all subordinaties station can usage data or Traffic Channel on the MAC message of a clean culture send described indication information, the information field example that described MAC message comprises, as shown in table 1.
For 802.16m system, information field can comprise concrete S-SFH attached bag and upgrade failure information in " upgrading failed system configuration information or parameter information ", which which such as indicate or attached bag in 3 attached bags with the bitmap of 3 bit sizes, upgrade unsuccessfully, even if the 1st bit is corresponding to attached bag 1, the 2nd bit corresponding to 2, the 3 bits of attached bag corresponding to attached bag 3.
Table 1 upgrades the unsuccessfully MAC information territory example of indication for system configuration information or parameter
| Information field type | Explain/annotation |
| Type of message | (summary) |
| Upgrade failed system configuration information or parameter information | (summary) |
| Retain | For expansion later |
Particularly, when control station correctly receives the described feedback indication information of standing from subordinate, control station can increase and is carried on the system configuration information that changes in broadcast physical control channel or the transmission frequency of parameter within the specific time interval, or reduce the dispatching cycle of described system configuration information or parameter, recover subsequently transmission frequency or the dispatching cycle of initial system configuration information or parameter; Or stand and send message clean culture or broadcast that comprises recent systems configuration information or parameter to subordinate by data or Traffic Channel.
Embodiment tetra-
In this embodiment, the CQI of control station based on from subordinate station feeds back, and adjusts dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate.Fig. 4 is according to the flow chart of the update mode of the third system configuration information of the embodiment of the present invention or parameter, as shown in Figure 4; According to the update method of the system configuration information of the embodiment of the present invention or parameter, mainly comprise the following steps:
Step S401: the feedback request based on from control station, the subordinate station feedback by long-term or short-term is reported channel quality indication (CQI) information in interval sometime to control station;
Step S402: control station is collected sometime in interval, from the CQI feedback information at a plurality of different subordinaties station, and merges the input as a certain algoritic module using these information;
Step S403: described algoritic module is exported now best system configuration information or long-term dispatching cycle or the transmission frequency of parameter, and/or code rate;
Step S404: control station is according to dispatching cycle or the transmission frequency of the output of described algoritic module, and/or code rate is to subordinate's transmitting system information of standing.
In specific implementation process, the CQI feedback information that control station can be used to subordinate station part or all of in automatic network operates; Particularly, when control station indication or under default condition, when all subordinaties station all needs to control station feedback CQI information, the renewal operation of system configuration information or parameter is carried out in control station utilization from the feedback information at whole subordinaties station; When CQI information need to be fed back to control station in control station indicating section subordinate station, the renewal operation of system configuration information or parameter is carried out in control station utilization from the feedback information at described part subordinate station.
Particularly, the all subordinaties station that can carry out CQI feedback operation can have the feedback cycle (being feedback time interval) of identical or different long-term or short-terms, such as common 4 or 8 radio frames, and described feedback cycle can be default value, or clearly indicated by descending control signaling or message by control station.
Particularly, because different subordinaties station may adopt different CQI feedback cycles, like this in same amount of time interval, the Times of Feedback that control station receives from different subordinaties station is also not identical, therefore, first need to consider the feedback from single subordinate station, and then consider the long-run average at all subordinaties station.
As shown in Figure 5, described algoritic module is determined dispatching cycle or transmission frequency, and/or the mode of code rate specifically comprises the following steps:
Step S501, control station is within the specific time interval, and active collection, from the feedback information at specific subordinate station, is obtained described subordinate station Times of Feedback (n) and corresponding CQI feedback index (Idx) during this period.
Particularly, the CQI index (Idx feeding back each time
n) can carry concrete modulation coding mode information, this information is notified the best Modulation and Coding Scheme that should use in control station downlink transfer betwixt for subordinate stands.
Step S502, control station utilizes n the CQI feedback index at the described subordinate station obtaining in step S501, calculates described subordinate stand in the average CQI feedback index (Idx in the described time interval according to following formula
avr):
Idx
avr＝(Idx
1+Idx
2+......+Idx
n)/n
Step S503, the subordinate who enables up CQI feedback for the next one stands, and control station repeats above-mentioned steps S501 and step S502, finally obtains each subordinate who enables up CQI feedback and stands in the average CQI feedback index (Idx in the described time interval
avr1, Idx
avr2..., Idx
avrm); Wherein, m represents the current number that enables the subordinate station of up CQI feedback.
Step S504, control station utilizes each that obtain in step S503 to enable the average CQI feedback index (Idx at the subordinate station of up CQI feedback
avr), according to following formula, calculate above-mentioned all subordinaties and stand in the average CQI feedback index (IDX in the described time interval
avr):
IDXavr＝(Idx
avr1+Idx
avr2+......+Idx
avrm)/m
Preferably, according to the difference of specific implementation, can be to above-mentioned average CQI feedback index (IDX in certain span (such as 1 to 16)
avr) round up, the operation that rounds downwards or round up.
Step S505, control station utilizes the process of obtaining in step S504 to round the average CQI feedback index (IDX of operation
avr), according to specific mapping form, carry out table lookup operation, finally export long-term dispatching cycle or the transmission frequency of best system configuration information or parameter, and/or code rate.
Particularly, for different radio frequency interface technology, described average CQI feedback index (IDX
avr) with dispatching cycle or the transmission frequency of corresponding system configuration information or parameter, and/or the mapping between code rate may be not identical; The 802.16m radio frequency interface technology of take is example, and described mapping form can be as shown in table 2.Wherein, TBD represents by determine later, is the abbreviation of To Be Determined.
The average CQI feedback of table 2-802.16m index (IDX
avr) and the dispatching cycle of corresponding system configuration information or parameter (S-SFH) and the mapping relations table between code rate
| IDX avr | S-SFH SP1 dispatching cycle | S-SFH SP2 dispatching cycle | S-SFH SP3 dispatching cycle | S-SFH code rate |
| 1 | TBD | TBD | TBD | 1/24 |
| 2 | TBD | TBD | TBD | 1/24 |
| 3 | TBD | TBD | TBD | 1/24 |
| 4 | TBD | TBD | TBD | 1/24 |
| 5 | TBD | TBD | TBD | 1/16 |
| 6 | TBD | TBD | TBD | 1/16 |
| 7 | TBD | TBD | TBD | 1/16 |
| 8 | TBD | TBD | TBD | 1/16 |
| 9 | TBD | TBD | TBD | 1/12 |
| 10 | TBD | TBD | TBD | 1/12 |
| 11 | TBD | TBD | TBD | 1/12 |
| 12 | TBD | TBD | TBD | 1/12 |
| 13 | TBD | TBD | TBD | 1/8 |
| 14 | TBD | TBD | TBD | 1/8 |
| 15 | TBD | TBD | TBD | 1/8 |
| 16 | TBD | TBD | TBD | 1/8 |
Particularly, control station is adjusted dispatching cycle or the transmission frequency of described system configuration information or parameter, and/or code rate, according to above-mentioned steps S501 to step S505, comprise the dispatching cycle or the transmission frequency that increase or reduce described system configuration information or parameter, and/or code rate.
Particularly, described code rate refers to the product of original coding speed and number of repetition; The code rate that increases or reduce described system configuration information or parameter comprises original coding speed and/or the number of repetition that increases or reduce described system configuration information or parameter.
By above-mentioned at least one scheme of the present invention, control station is by carrying out the reproducting periods of system configuration information or parameter at wireless network, or during the listen window at one or more subordinaties station or listen window with dispatching cycle or the transmission frequency of system configuration information described in external-adjuster or parameter, and/or code rate, subordinate stood can obtain or fast as far as possible obtain and apply up-to-date described system configuration information or parameter, thereby solved in prior art because subordinate station cannot receive and apply the problem that system configuration information after change or parameter cause subordinate to stand and cannot work in time, guaranteed in wake up or park mode under subordinate stand in the normal operation in the situation of system configuration information or parameter change, improved systematic function.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (10)
1. for a update method for communication system system information, it is characterized in that, comprise the steps:
Control station adopts initiatively or the mode of passive adjustment, and transmission parameter or the send mode of system information after changing or all are adjusted; Described transmission parameter comprises: dispatching cycle or transmission frequency and/or code rate;
Control station is stood and is sent after change or all system informations to one or more subordinaties according to the transmission parameter after adjusting or send mode;
Described control station is after definite system information changes, and adopts the mode of active accommodation, and the transmission parameter of the system information after changing is adjusted;
Whether described control station, by judgement, when described system information changes, exists in the sleep window of one or more subordinaties station under sleep pattern, determines the duration that adopts described active accommodation mode;
The active accommodation mode that described control station adopts, comprising: control station, during the listen window at described one or more subordinaties station or beyond listen window, is adjusted dispatching cycle or transmission frequency and/or the code rate of described system information.
2. update method as claimed in claim 1, is characterized in that,
When described control station adopts the mode of passive adjustment, control station is according to the feedback information from subordinate station, and transmission parameter or the send mode of system information after changing or all are adjusted;
Wherein, described feedback information comprises: channel quality indication (CQI) information and/or system information are upgraded failed indication information.
3. update method as claimed in claim 2, is characterized in that, described update method further comprises:
Described feedback information is that system information is upgraded failed indication information;
Subordinate stands under the condition that can not be correctly decoded the system configuration information that changes or parameter, or subordinate station discovery system information from sleep window is waken up changes, and to control station, feeds back described system information and upgrades failed indication information;
Described control station, according to the stand indication information of renewal failure of feedback of the correct subordinate who receives, is adjusted dispatching cycle or transmission frequency and/or the code rate of described system information; Or, to subordinate, stand and send clean culture or the broadcast that comprises the system information after change.
4. update method as claimed in claim 3, is characterized in that,
Described subordinate station is by shared ascending physical signal control channel, and/or medium access control message upgrades failed indication information to control station feedback;
The failed indication information of described renewal, comprises system configuration information or parameter and/or the subordinate information of standing.
5. update method as claimed in claim 2, is characterized in that, described update method further comprises:
Described feedback information is channel quality indication (CQI) information;
Subordinate station is according to the feedback request of control station, and the feedback message by long-term or short-term is reported the channel quality indicator CQI information in interval sometime to control station;
The CQI feedback information that control station is stood from a plurality of different subordinaties in interval described in collecting sometime, and calculating according to these CQI feedback informations, and table look-up and export dispatching cycle or transmission frequency and/or the code rate of system configuration information now or parameter;
Control station is according to dispatching cycle or the transmission frequency of output, and/or code rate is stood and sent follow-up system configuration information or parameter to subordinate.
6. update method as claimed in claim 5, is characterized in that,
Described control station is determined dispatching cycle or transmission frequency in accordance with the following steps according to the channel quality indicator (CQI) feedback information at subordinate station, and/or code rate:
Control station obtains described subordinate and stands in Times of Feedback n and the corresponding CQI feedback index Idx in the specific time interval, obtains described subordinate and stands in the average CQI feedback index Idx in the described time interval
avr;
Obtain the average CQI feedback index Idx that m subordinate stood in each comfortable specific time interval
avr1, Idx
avr2..., Idx
avrm, and obtain all subordinaties and stand in the average CQI feedback index IDX in the described time interval
avr;
Control station utilization is through rounding the average CQI feedback index IDX of operation
avr, according to specific mapping form, carry out table lookup operation, long-term dispatching cycle or the transmission frequency of output system information, and/or code rate.
7. update method as claimed in claim 1 or 2, is characterized in that,
Described system information, comprise for network reentry, network initially enters and system configuration information or the parameter of Network finding.
8. update method as claimed in claim 1 or 2, is characterized in that,
Described control station comprises following one or more network elements: grand control station, microcontroller station, slight control station, relay station;
Described subordinate station comprises following one or more network elements: terminal, relay station, microcontroller station, slightly control station.
9. a communication system, is characterized in that, comprising:
Control station, adopts initiatively or the mode of passive adjustment, and transmission parameter or the send mode of system information after changing or all are adjusted; According to the transmission parameter after adjusting or send mode, to one or more subordinaties, stand and send after change or all system informations;
Subordinate station, for receiving and understand system information; Described subordinate station is also for according to the feedback request of control station, and the feedback message by long-term or short-term is reported the channel quality indicator CQI information in interval sometime to control station;
Correspondingly, described control station is also for adopting the mode of passive adjustment, described in collection sometime in interval from the CQI feedback information at a plurality of different subordinaties station, and calculate and table look-up and export dispatching cycle or transmission frequency and/or the code rate of system configuration information now or parameter according to these CQI feedback informations; Control station is according to dispatching cycle or the transmission frequency of output, and/or code rate is stood and sent follow-up system configuration information or parameter to subordinate.
10. communication system as claimed in claim 9, is characterized in that,
Described subordinate station, also for not being correctly decoded under the condition of the system configuration information that changes or parameter, or subordinate station discovery system configuration information or parameter from sleep window is waken up change, to control station, feed back described system configuration information or parameter is upgraded failed indication information;
Correspondingly, described control station adopts the mode of passive adjustment, according to the stand indication information of renewal failure of feedback of the subordinate of correct reception, adjusts dispatching cycle or transmission frequency and/or the code rate of described system information; Or, to subordinate, stand and send clean culture or the broadcast that comprises the system information after change.
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| JP2012525880A JP5452721B2 (en) | 2009-12-25 | 2010-11-12 | Communication system and method for updating system information in communication system |
| PCT/CN2010/078676 WO2011076042A1 (en) | 2009-12-25 | 2010-11-12 | Communication system and method for updating system information in communication system |
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| US9882995B2 (en) * | 2012-06-25 | 2018-01-30 | Sonos, Inc. | Systems, methods, apparatus, and articles of manufacture to provide automatic wireless configuration |
| CN107820217B (en) * | 2016-09-12 | 2019-08-16 | 电信科学技术研究院 | A kind of method of reseptance of system information, sending method and equipment |
| CN107889188B (en) * | 2016-09-30 | 2020-03-24 | 电信科学技术研究院 | System information acquisition method, user terminal and network side equipment |
| CN108076476B (en) * | 2016-11-18 | 2020-11-06 | 华为技术有限公司 | Method and device for transmitting data |
| RU2733265C1 (en) | 2017-03-16 | 2020-10-01 | Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. | Method, apparatus and system for obtaining system information |
| WO2019205113A1 (en) * | 2018-04-27 | 2019-10-31 | 北京小米移动软件有限公司 | Method and device for obtaining access control parameters, and storage medium |
| CN110430606B (en) * | 2019-09-17 | 2021-07-13 | 中国联合网络通信集团有限公司 | System information acquisition method, terminal and base station |
| CN112237016A (en) * | 2019-09-26 | 2021-01-15 | 深圳市大疆创新科技有限公司 | Method, system, device and storage medium for transmitting positioning assistance data |
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