CN104661240B - Send method and the base station of system information - Google Patents

Send method and the base station of system information Download PDF

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Publication number
CN104661240B
CN104661240B CN201310585483.1A CN201310585483A CN104661240B CN 104661240 B CN104661240 B CN 104661240B CN 201310585483 A CN201310585483 A CN 201310585483A CN 104661240 B CN104661240 B CN 104661240B
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code check
preset
time window
rrc layer
data volume
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CN104661240A (en
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程浩
方伟
徐绍君
张光伟
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TD Tech Ltd
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TD Tech Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers

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

Abstract

The present invention provide it is a kind of send system information method and base station.Radio resource control RRC layer calculates demand code check according to the data volume of preset time window, preset maximum retransmission and system information SI;If the demand code check is more than preset first code check thresholding, then the rrc layer reduces the neighboring BS information that the system information block SIB in the SI includes, and returns to the step of rrc layer calculates demand code check according to the data volume of preset time window, preset maximum retransmission and SI;If the demand code check is less than or equal to the first code check thresholding, the rrc layer notifies the demand code check and the time window to media access control MAC layer;The MAC layer sends the SI using the code check and time window of rrc layer notice.Using the method provided by the invention for sending SI and base station, the success rate for sending SI can be improved.

Description

Send method and the base station of system information
Technical field
The present invention relates to the communication technology more particularly to a kind of transmission system informations(System Information, referred to as SI)Method and base station(Evolved Node B, abbreviation eNB).
Background technology
In long term evolution(Long Term Evolution, abbreviation LTE)In system, will have identical purpose or same genus The parameter of property belongs to same type of system information block(System Information Block, abbreviation SIB)In, therefore SIB points are SIB1, SIB2 ... SIB13 etc..Wherein, the transmission cycle of SIB1 is fixed as 80ms, is retransmitted per 20ms in a cycle Identical content.Other SIB other than SIB1 pass through system information(System Information, abbreviation SI)It is transmitted, leads to The scheduling information crossed in SIB1 configures the mapping of other each SIB to SI.Each SIB is contained only in a SI, is only transmitted Period, identical SIB can be just mapped in same SI.
Currently, SI is in periodic time window(Abbreviation SI-window)It is interior to be transmitted in a manner of dynamic dispatching, The length of the time window and the transmission cycle of SI are configured in SIB1.Wherein, the length of the time window of each SI is all identical.Often A SI corresponds to a time window;The time window of different SI is not overlapped between each other.In a time window, only transmission pair The initial transmission of the SI answered, the SI and re-transmission all carry out in the time window.
In the existing method for sending SI, when the inadequate resource at current time is to send SI, abandon this time sending, etc. Until next transmission cycle, which reattempts, sends the SI, using the method, the success rate for sending SI is low, accesses and produces to community user Raw adverse effect.
Invention content
The first aspect of the invention is to provide a kind of method sending system information, to solve in the prior art lack It falls into, improves the success rate for sending SI.
Another aspect of the present invention is to provide a kind of base station, to solve defect in the prior art, improves and sends SI Success rate.
The first aspect of the invention is to provide a kind of method of transmission system information SI, including:
Radio resource control RRC layer is according to preset time window, the data volume of preset maximum retransmission and SI Calculation demand code check;
If the demand code check is more than preset first code check thresholding, the rrc layer reduces the letter of the system in the SI The breath block SIB neighboring BS information that includes, and return the rrc layer according to preset time window, preset maximum retransmission and The data volume of SI calculates the step of demand code check;
If the demand code check is less than or equal to the first code check thresholding, the rrc layer is to media access control MAC Layer notifies the demand code check and the time window;
The MAC layer sends the SI using the code check and time window of rrc layer notice.
Method as described above, wherein the rrc layer reduces the neighboring BS information that the SIB in the SI includes and includes:
The rrc layer reduces the neighboring BS information for the minimum adjacent area of priority that the SIB in the SI includes.
Method as described above, wherein the rrc layer according to preset time window, preset maximum retransmission and Before the data volume of SI calculates demand code check, further include:
The rrc layer can pass data volume according to the calculating of default code check;
If the data volume for passing data volume and being greater than or equal to the SI, the rrc layer notify institute to the MAC layer State default code check and the preset time window;
If it is described pass data volume be less than the SI data volume, execute the rrc layer according to preset time window, The step of preset maximum retransmission and the data volume of SI calculate demand code check.
Method as described above, wherein further include:
If the demand code check is more than preset first code check thresholding, and does not include the corresponding SIB in adjacent area in the SI, then The rrc layer sends SI to the MAC layer and sends failure notification.
Method as described above, wherein further include:
If the number that the SI that the MAC layer receives sends failure notification is greater than or equal to preset failure thresholding, institute MAC layer is stated according to subframe minimum resource block RB in preset time window, calculating can support code check, if described support that code check is big In or be equal to preset second code check thresholding, then the MAC layer using the rrc layer notice code check and time window send institute SI is stated, if described support code check to be less than preset second code check thresholding, code check and institute can be supported described in the MAC layer use The time window for stating rrc layer notice sends the SI;
If the number that the SI that the MAC layer receives sends failure notification is less than preset failure thresholding, the MAC layer The SI is sent using the code check and time window of rrc layer notice.
Another aspect of the present invention is to provide a kind of base station, including:
Radio resource control RRC layer control unit, for according to preset time window, preset maximum retransmission and The data volume of system information SI calculates demand code check, if the demand code check is more than preset first code check thresholding, reduces institute The neighboring BS information that the system information block SIB in SI includes is stated, and again according to preset time window, preset maximum re-transmission time The data volume of number and SI calculate demand code check, if the demand code check is less than or equal to the first code check thresholding, to media Access control MAC layer control unit notifies the demand code check and the time window;
The MAC layer control unit, for sending institute using the code check and time window of rrc layer control unit notice State SI.
Base station as described above, wherein the SIB that the rrc layer control unit is specifically used for reducing in the SI includes The neighboring BS information of the minimum adjacent area of priority.
Base station as described above, wherein the rrc layer control unit is additionally operable to that according to default code check calculating data can be passed Amount notifies described default if the data volume for passing data volume and being greater than or equal to the SI to the MAC layer control unit Code check and the preset time window, if the data volume for passing data volume and being less than the SI, according to the preset time The data volume of window, preset maximum retransmission and SI calculates demand code check.
Base station as described above, wherein the rrc layer control unit is additionally operable to be more than preset the in the demand code check When not including the corresponding SIB in adjacent area in one code check thresholding and the SI, sends SI transmissions to the MAC layer control unit and unsuccessfully lead to Know.
Base station as described above, wherein the MAC layer control unit is additionally operable to send failure notification in the SI received When number is greater than or equal to preset failure thresholding, according to the minimum subframes of resource block RB in preset time window, calculating can prop up Code check is held, it is logical using the rrc layer control unit if described support code check to be greater than or equal to preset second code check thresholding The code check and time window known send the SI, if described support code check to be less than preset second code check thresholding, use institute Stating can support the time window that code check and the rrc layer control unit notify to send the SI;
The number that the MAC layer control unit is additionally operable to send failure notification in the SI received is less than preset failure door In limited time, the SI is sent using the code check and time window of rrc layer control unit notice.
By foregoing invention content as it can be seen that when calculating the demand code check obtained less than or equal to preset first code check thresholding, Rrc layer reduces the neighboring BS information that SIB includes in SI to be sent, by carrying out adjacent area reduction, reduces in SI to be sent SIB, to reduce the data volume of the SI.When in the inadequate resource at current time to send original SI, using the present invention The above method of embodiment reduces the data volume of SI by adjacent area reduction so that the SI can be correctly sent, to improve Send the success rate of SI.
Description of the drawings
Fig. 1 is the flow chart of the method for the transmission SI of the embodiment of the present invention one;
Fig. 2 is the flow chart of the method for the transmission SI of the embodiment of the present invention two;
Fig. 3 is the structural schematic diagram of the base station of the embodiment of the present invention three.
Specific implementation mode
Fig. 1 is the flow chart of the method for the transmission SI of the embodiment of the present invention one.As shown in Figure 1, this method includes following mistake Journey.
Step 101:Wireless heterogeneous networks(Radio Resource Control, abbreviation RRC)Layer is according to the preset time The data volume of window, preset maximum retransmission and SI calculates demand code check.
In this step, the data volume of SI is the data volume of current SI to be sent.
Step 102:The rrc layer demand code check and preset first code check thresholding.
If the demand code check is more than preset first code check thresholding, 103 are thened follow the steps;If the demand code check is less than Or it is equal to the first code check thresholding, then follow the steps 104.
Step 103:Rrc layer reduces the neighboring BS information that the SIB in the SI includes.
After step 103, return to step 101.
Step 104:Rrc layer is to wireless heterogeneous networks(Media Access Control, abbreviation MAC)Layer notifies the need Ask code check and the time window.
Step 105:MAC layer sends the SI using the code check and time window of rrc layer notice.
In the embodiment of the present invention one, it is less than or equal to preset first code check thresholding calculating the demand code check obtained When, rrc layer(That is layer three)The neighboring BS information that SIB includes is reduced in SI to be sent to be reduced and waits for by carrying out adjacent area reduction SIB in the SI of transmission, to reduce the data volume of the SI.When in the inadequate resource at current time to send original SI, Using the above method of the embodiment of the present invention, reduce the data volume of SI by adjacent area reduction so that the SI can correctly be sent out It send, to improve the success rate for sending SI.
Fig. 2 is the flow chart of the method for the transmission SI of the embodiment of the present invention two.As shown in Fig. 2, this method includes following mistake Journey.
Step 201:Rrc layer can pass data volume according to the calculating of default code check.
In this step, it is the maximum number that can be transmitted in preset time window using code check is preset that can pass data volume According to amount.In embodiments of the present invention, to that can pass the specific method of data volume and be not limited according to presetting code check and calculate, it is any can The method that data volume can be passed according to the calculating of default code check is applicable, for example, can as follows, according to default code check meter Calculation can pass data volume:
The symbol that can be used for transmitting SI in the RB quantity × each TTI for can be used for transmitting in data volume=each TTI SI can be passed The number of transmissions × SI transmission of the number of carrier wave × Modulation order Product code Rate × SI for including on number × each RB in preset window Default code check.Wherein, TTI is Transmission Time Interval(Transmission Time Interval, abbreviation TTI);SI be System information(System Information, abbreviation SI);RB is radio bearer(Radio Bearer, abbreviation RB);On each RB Including number of carrier wave can be preset as a fixed value, for example, 12 can be preset as;Modulation order Product code Rate can be a fixation Value, for example, using four phase shift keying in system broadcasts(Quadrature Phase Shift Keying, abbreviation QPSK)When, Modulation order Product code Rate can be 2.
Step 202:The relatively more described data volume that can pass data volume and the SI of rrc layer.
In this step, the data volume of SI is the data volume of current SI to be sent.If it is described pass data volume be more than or Equal to the data volume of the SI, 203 are thened follow the steps;If the data volume for passing data volume and being less than the SI, executes step Rapid 204.
Step 203:Rrc layer notifies the default code check and the preset time window to MAC layer.
In this step, if the data volume for passing data volume and being more than SI calculated according to default code check, illustrates Preset time window can accommodate the data volume for the SI that will be passed, and therefore, rrc layer is by default code check and preset time window Notify MAC layer.
After step 203, step 210 is executed.
Step 204:Rrc layer calculates need according to the data volume of preset time window, preset maximum retransmission and SI Seek code check.
In this step, the data volume of SI is the data volume of current SI to be sent.Since the data volume that passes is less than The data volume of the SI, illustrate if using rrc layer initial configuration default code check, preset time window not enough accommodate will The data volume of the SI of biography, it is therefore desirable to code check is improved, according to preset time window and preset maximum retransmission and SI Data volume the code checks of needs, i.e. demand code check is calculated.In embodiments of the present invention, to according to preset time window, The specific method that preset maximum retransmission and the data volume of SI calculate demand code check is not limited, it is any can be according to default Time window, preset maximum retransmission and SI data volume calculate demand code check method it is applicable, for example, can be with As follows, demand code check is calculated according to the data volume of preset time window, preset maximum retransmission and SI:
The data volume of demand code check=SI of SI transmission/(It can be used for transmitting RB quantity × each TTI of SI in each TTI Number of carrier wave × Modulation order Product code Rate × the SI that inside can be used for including on symbolic number × each RB of transmission SI is in preset window The number of transmissions), wherein the number of carrier wave for including on each RB can be preset as a fixed value, for example, 12 can be preset as; Modulation order Product code Rate can be a fixed value, for example, using four phase shift keying in system broadcasts(Quadrature Phase Shift Keying, abbreviation QPSK)When, Modulation order Product code Rate can be 2;The number of transmissions of the SI in preset window can basis Preset time window and preset maximum retransmission, which calculate, to be obtained.
After step 204, step 205 is executed.
Step 205:The rrc layer demand code check and preset first code check thresholding.
If the demand code check is more than preset first code check thresholding, 206 are thened follow the steps;If the demand code check is less than Or it is equal to the first code check thresholding, then follow the steps 209.
In this step, the setting of the first code check thresholding should consider that cell edge can be covered.
Step 206:Whether rrc layer judges in SI to include the corresponding SIB in adjacent area.
If so, executing step 207;Otherwise, step 208 is executed.
In this step, whether rrc layer judges in SI to include the corresponding SIB in adjacent area, and the corresponding SIB in adjacent area may include SIB4, SIB5, SIB6, SIB7 and/or SIB8 etc..
Step 207:Rrc layer reduces the neighboring BS information that the SIB in the SI includes.
In this step, the specific method that rrc layer reduces the neighboring BS information that the SIB in the SI includes may include:RRC Layer reduces the neighboring BS information for the minimum adjacent area of priority that the SIB in the SI includes.Wherein it is determined that the side of the priority of adjacent area Method includes:Since backstage can configure cell individual offsets according to the neighboring BS relationship preferentially switched(Cell Individual Offset, abbreviation CIO)Parameter, therefore determine that priority, the bigger adjacent area of CIO parameter values are excellent according to the CIO parameters of each adjacent area First grade is higher.
In step 207, by carrying out adjacent area reduction, the data volume of SI is reduced.After step 207, return to step 204, calculate demand code check, wherein SI again according to the data volume of preset time window, preset maximum retransmission and SI Data volume be SI after adjacent area is reduced data volume.Step 205 is continued to execute after step 204, and compare needs again Ask code check and preset first code check thresholding.Step 207, step 204 and step 205 can be performed a plurality of times, until in step 205 Middle judgement demand code check is less than or equal to the first code check thresholding, thens follow the steps 209.
Step 208:Rrc layer sends SI to MAC layer and sends failure notification.
In this step, demand code check is more than preset first code check thresholding, and does not include the corresponding SIB in adjacent area in SI, Then rrc layer determines that SI sends failure, and sending SI to MAC layer sends failure notification.
After step 208, step 210 is executed.
Step 209:Rrc layer notifies the demand code check and the time window to MAC layer.
In this step, the demand code check is less than or equal to the first code check thresholding, then rrc layer is thought to need in use Ask the time window being currently configured when code check that can accommodate the data volume of SI to be sent, which can send, therefore, rrc layer Demand code check and time window are notified into MAC layer.
After step 209, step 210 is executed.
Step 210:The SI that MAC layer relatively receives sends the number of failure notification and preset failure thresholding.
If the number that the SI that MAC layer receives sends failure notification is greater than or equal to preset failure thresholding, step is executed Rapid 211;If the number that the SI that MAC layer receives sends failure notification is less than preset failure thresholding, 213 are thened follow the steps.
Step 211:MAC layer can support code check according to subframe minimum resource block RB in preset time window, calculating.
In this step, the number that the SI received sends failure notification is greater than or equal to preset failure thresholding, then SI It determines the less reliable that Current resource is limited, and community user SI is received, needs to adjust code check.Adjustment mode includes step 211 To step 213.
After step 211, step 212 is executed.
Step 212:MAC layer is relatively more described can to support code check and preset second code check thresholding.
If described support code check to be greater than or equal to preset second code check thresholding, do not adjust to code check, specifically, Execute step 213;If described support code check to be less than preset second code check thresholding, code check is adjusted, specifically, is held Row step 214.
Step 213:MAC layer sends the SI using the code check and time window of rrc layer notice.
In this step, MAC layer sends the SI using the code check and time window of rrc layer notice.Wherein, for preceding Step is the case where entering step 210 by step 203, and the code check of rrc layer notice is default code check.For being warp in preceding step The case where step 204 enters step 210 is crossed, the code check of rrc layer notice is demand code check.
Step 214:MAC layer can support the time window that code check and rrc layer notify to send the SI described in using.
In the embodiment of the present invention two, using rrc layer(That is layer three)With MAC layer(That is layer two)The method for cooperateing with processing. It when inadequate resource, is adjusted first in rrc layer, the neighboring BS information that SIB includes is reduced in SI to be sent, is waited for reduce The data volume of the SI of transmission.Then, SI still sends failure after rrc layer carries out above-mentioned adjustment and the number of transmission failure reaches When one preset thresholding, code check is improved in MAC layer.To send original SI in the inadequate resource at current time When, processing is cooperateed with MAC layer by rrc layer, reduces the resource for sending and being occupied needed for SI so that the SI can be correctly sent, To improve the success rate for sending SI.
Fig. 3 is the structural schematic diagram of the base station of the embodiment of the present invention three.As shown in figure 3, the base station includes at least:Rrc layer Control unit 31 and MAC layer control unit 32.
Wherein, rrc layer control unit 31 is used to be believed according to preset time window, preset maximum retransmission and system The data volume for ceasing SI calculates demand code check, if the demand code check is more than preset first code check thresholding, reduces in the SI The system information block SIB neighboring BS information that includes, and again according to preset time window, preset maximum retransmission and SI Data volume calculate demand code check, if the demand code check be less than or equal to the first code check thresholding, to media access control MAC layer control unit 32 processed notifies the demand code check and the time window.
The MAC layer control unit 32 is used for code check and time window hair using the rrc layer control unit 31 notice Send the SI.
Based on the above technical solution, further, the rrc layer control unit 31 is specifically used for reducing the SI In the minimum adjacent areas of priority that include SIB neighboring BS information.
Based on the above technical solution, further, the rrc layer control unit 31 is additionally operable to according to default code check Calculating can pass data volume, if the data volume for passing data volume and being greater than or equal to the SI, to the MAC layer control unit 32 notify the default code check and the preset time window, if the data volume for passing data volume and being less than the SI, Demand code check is calculated according to the data volume of preset time window, preset maximum retransmission and SI.
Based on the above technical solution, further, the rrc layer control unit 31 is additionally operable in the demand code When rate is more than in preset first code check thresholding and the SI not SIB corresponding including adjacent area, to the MAC layer control unit 32 It sends SI and sends failure notification.
Based on the above technical solution, further, the MAC layer control unit 32 is additionally operable in the SI received When sending the number of failure notification more than or equal to preset failure thresholding, minimum according to resource block RB in preset time window Subframe, calculating can support code check, if described support code check to be greater than or equal to preset second code check thresholding, using described The code check and time window that rrc layer control unit 31 notifies send the SI, if described support code check to be less than preset second Code check thresholding can then support the time window that code check and the rrc layer control unit 31 notify to send the SI described in use.Institute MAC layer control unit 32 is stated to be additionally operable to, when the SI received sends the number of failure notification less than preset failure thresholding, adopt The code check and time window notified with the rrc layer control unit 31 sends the SI.
The base station of the embodiment of the present invention three can be used for executing described in the embodiment of the present invention one and the embodiment of the present invention two The method for sending SI, specific implementation process and technique effect are referred to the embodiment of the present invention one and the embodiment of the present invention two, Details are not described herein again.
One of ordinary skill in the art will appreciate that:Realize that all or part of step of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer read/write memory medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence;And storage medium above-mentioned includes:ROM, RAM, magnetic disc or The various media that can store program code such as person's CD.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that:Its according to So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into Row equivalent replacement;And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (8)

1. a kind of method sending system information SI, which is characterized in that including:
Radio resource control RRC layer calculates need according to the data volume of preset time window, preset maximum retransmission and SI Seek code check;
If the demand code check is more than preset first code check thresholding, the rrc layer reduces the system information block in the SI SIB, and return to the rrc layer and demand is calculated according to the data volume of preset time window, preset maximum retransmission and SI The step of code check;
If the demand code check is less than or equal to the first code check thresholding, the rrc layer is logical to media access control MAC layer Know the demand code check and the time window;
The MAC layer sends the SI using the code check and time window of rrc layer notice;
The rrc layer reduces the neighboring BS information that the SIB in the SI includes:The rrc layer reduces the SIB packets in the SI The neighboring BS information of the minimum adjacent area of priority contained.
2. according to the method described in claim 1, it is characterized in that, the rrc layer according to preset time window, it is preset most Before the data volume of big number of retransmissions and SI calculate demand code check, further include:
The rrc layer can pass data volume according to the calculating of default code check;
If the data volume for passing data volume and being greater than or equal to the SI, the rrc layer notifies described pre- to the MAC layer If code check and the preset time window;
If the data volume for passing data volume and being less than the SI, the rrc layer is executed according to preset time window, default Maximum retransmission and SI data volume calculate demand code check the step of.
3. method according to claim 1 or 2, which is characterized in that further include:
If the demand code check is more than preset first code check thresholding, and does not include the corresponding SIB in adjacent area in the SI, then described Rrc layer sends SI to the MAC layer and sends failure notification.
4. according to the method described in claim 3, it is characterized in that, further including:
If the number that the SI that the MAC layer receives sends failure notification is greater than or equal to preset failure thresholding, the MAC Layer according to subframe minimum resource block RB in preset time window, calculating can support code check, if it is described support code check be more than or Equal to preset second code check thresholding, then the MAC layer is using described in the code check of rrc layer notice and time window transmission SI, if described support that code check is less than preset second code check thresholding, the MAC layer use described in can support code check and described The time window of rrc layer notice sends the SI;
If the number that the SI that the MAC layer receives sends failure notification is less than preset failure thresholding, the MAC layer uses The code check and time window of the rrc layer notice send the SI.
5. a kind of base station, which is characterized in that including:
Radio resource control RRC layer control unit, for according to preset time window, preset maximum retransmission and system The data volume of information SI calculates demand code check, if the demand code check is more than preset first code check thresholding, reduces the SI In the system information block SIB neighboring BS information that includes, and again according to preset time window, preset maximum retransmission and The data volume of SI calculates demand code check, if the demand code check is less than or equal to the first code check thresholding, is accessed to media Mac layer control unit notifies the demand code check and the time window;
The MAC layer control unit, described in being sent using the code check and time window of rrc layer control unit notice SI;
The rrc layer control unit is specifically used for reducing the adjacent area letter for the minimum adjacent area of priority that the SIB in the SI includes Breath.
6. base station according to claim 5, which is characterized in that
The rrc layer control unit be additionally operable to according to preset code check calculating can pass data volume, if it is described pass data volume be more than or Equal to the data volume of the SI, then the default code check and the preset time window are notified to the MAC layer control unit, If it is described pass data volume be less than the SI data volume, according to preset time window, preset maximum retransmission and The data volume of SI calculates demand code check.
7. base station according to claim 5, which is characterized in that the rrc layer control unit is additionally operable in the demand code When rate is more than in preset first code check thresholding and the SI not SIB corresponding including adjacent area, sent out to the MAC layer control unit SI is sent to send failure notification.
8. base station according to claim 7, which is characterized in that
The number that the MAC layer control unit is additionally operable to send failure notification in the SI received is greater than or equal to preset failure When thresholding, according to the minimum subframes of resource block RB in preset time window, calculating can support code check, if described support that code check is big In or equal to preset second code check thresholding, then institute is sent using the code check and time window of rrc layer control unit notice SI is stated, if described support code check to be less than preset second code check thresholding, code check and the rrc layer control can be supported described in use The time window of unit notice processed sends the SI;
The number that the MAC layer control unit is additionally operable to send failure notification in the SI received is less than preset failure thresholding When, the SI is sent using the code check and time window of rrc layer control unit notice.
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