CN101114869B - System message block scheduling method and device in UMTS system - Google Patents

Abstract

The invention discloses a method and device for scheduling system information blocks in a UMTS system, which are used to solve the problem that the successful scheduling of system information blocks cannot be guaranteed in the existing UMTS system; the method of the invention includes: judging the availability of current configuration data of all information blocks , the information block includes a scheduling block and a system information block; according to the judgment result, a corresponding system information scheduling scheme is selected to determine the required scheduling block, and the related scheduling information of each scheduling block and each system information block is determined; and the related scheduling The information is provided to the user terminal. The invention can accurately determine the scheduling blocks required for calling the system information and the scheduling information of each system information block, thereby ensuring the validity and reliability of the scheduling of the system information blocks.

Description

Method and device for system information block scheduling in UMTS system

technical field

The invention relates to the field of mobile communication, in particular to a method and device for scheduling system information blocks in a UMTS system.

Background technique

In the Universal Mobile Telecommunications System (UMTS), after the user terminal equipment (User Equipment, UE) is turned on, it first searches for a cell, and when it finds a suitable cell, it starts to read the broadcast of the cell. Channel (BroadcastChannel, BCH) to obtain corresponding system information (including current cell public resources, cell selection and reselection, etc.), UE can establish a connection with WCDMA system base station NodeB according to these system information. It can be seen that the system information is a bridge between the UE and the network, and whether the system information can be transmitted correctly will determine whether the wireless access of the UE can be successfully completed.

System Information (System Information) is divided into different System Information Blocks (System Information Block, SIB) according to its content. Radio Access Network, UTRAN) In addition to setting the value of each system information block, it is also necessary to schedule it reasonably, such as segmenting/concatenating the system information blocks into a format and length suitable for the BCH transmission block of the broadcast channel.

The main system information block (Master Information Block, MIB) or scheduling block (Schedule Block1/Schedule Block 2, SB1/SB2) is mainly used to contain the scheduling information of each system information block. Therefore, the system information block must be scheduled first to obtain After their scheduling information, the scheduling information of each system information block is filled in the main system information block or scheduling block. The scheduling information mainly includes information such as repetition period SIB_REP, segment number SEG_COUNT, initial position SIB_POS and position offset SIB_OFF; wherein,

SIB_REP indicates the repetition period of the system information block SIB. For example, if the repetition period is 4, it means that the SIB is sent every 4 frames, and the frame is a 10ms wireless frame; each system information block, main system information block or scheduling block should be Given the corresponding SIB_REP, it is generally defined that the smaller the SIB_REP, the higher the priority, where MAX_REP is the largest repetition period among all system information blocks, that is, the repetition periods of all information blocks are sorted from small to large.

SEG_COUNT, indicating the number of SIB segments, the calculation formula is as follows:

的上整数；其中： $\mathrm{SEG}\_{\mathrm{COUNT}}_i=\mathrm{floor}\left(\frac{{\mathrm{Len}}_{\mathrm{Si}{d}_i}}{{\mathrm{Len}}_{\mathrm{BCH}}-R}\right),$ i.e. SEG_COUNTi is equal to

upper integer of ; where:

Len _Sibi : the length after Sibi encoding;

Len _BCH : the length of a BCH transmission block that removes consumption;

R: reserved amount.

For example: $\frac{{\mathrm{Len}}_{\mathrm{Sibi}}}{{\mathrm{Len}}_{\mathrm{BCH}}-R}=2.5$ In the case of , SEG_COUNTi is equal to 3.

SIB_POS, indicating the position of the SIB or the first segment of the SIB in a repetition period, SIB_POS=0...SIB_REP-2, with a step size of 2; assuming SIB_REP=4, the first segment of the system information block The value range of the position is 0 or 2; if SIB_REP=8, the value range of the position of the first segment of the system information block is 0, 2, 4 or 6.

SIB_OFF, after the SIB, SB1 or SB2 segment, the position offset between the subsequent segment and the previous segment, recorded as SIB_OFF(i), i=1, 2, ..., SEG_COUNT-1; SIB_OFF in ascending order arrangement.

There are two uncertainties in the existing UMTS system:

1. The number of scheduling blocks, that is, the required scheduling blocks;

2. The corresponding relationship between the scheduling information of each system information block and the scheduling block, that is, which scheduling information of the system information block should be included in which scheduling block.

The above uncertain factors cause the scheduling information of the system information block to depend on the encoded length of each scheduling block, and the encoded length of the scheduling block depends on the scheduling information of each system information block, thus forming a "circular dependency".

In view of the above problems, the existing system information scheduling methods adopt the principle of pre-estimation, that is, the number of scheduling blocks required is estimated in advance according to the coded length of each system information block, and then, on this basis, each block is obtained. Scheduling information for system information blocks. However, when the size of some system information blocks changes, the original scheduling information may no longer be applicable, so parameters such as the repetition period of the system information blocks must be continuously adjusted to regain a set of appropriate configuration data, and the processing is complicated; And in some cases, system information scheduling may fail because no suitable configuration data can be found.

Contents of the invention

In view of this, the present invention provides a method and device for scheduling system information blocks in a UMTS system, which are used to solve the problem of complex processing when the configuration data of system information blocks is unavailable in the prior art, and even the problem that system information blocks cannot be successfully scheduled

The present invention includes following scheme:

A method for system information block scheduling in UMTS system, including steps

Judging the availability of current configuration data for all information blocks, the information blocks include scheduling blocks and system information blocks;

When the configuration data is available and the system information block scheduling fails, re-determine the required scheduling blocks according to the system information block scheduling scheme in which the configuration data is unavailable, and determine each scheduling block and related scheduling information of each system information block, and set the Provide the above relevant scheduling information to the user terminal;

When the configuration data is unavailable, determine the required scheduling blocks according to the system information block scheduling scheme for which the configuration data is unavailable, and determine the related scheduling information of each scheduling block and each system information block, and provide the related scheduling information to user terminal;

Wherein, the system information block scheduling scheme for which the configuration data is unavailable includes:

According to the repetition period of each scheduling block and the parameter value of the scheduling block, the repetition period of the system information block corresponding to the set scheduling block is calculated, and the length of the set scheduling block is calculated according to the repetition period, when the set scheduling block When the lengths are all less than or equal to the length of the broadcast channel BCH transmission block, the set scheduling block is determined as the required scheduling block, otherwise, the number of the set scheduling blocks is increased, and the length of the set scheduling block is recalculated. Until a suitable scheduling block is found, wherein the set scheduling block includes: one or more of the main system information block (MIB), the first scheduling block (SB1), and the second scheduling block (SB2).

Wherein, the scheduling blocks include a main system information block MIB, a first scheduling block SB1 and a second scheduling block SB2.

Wherein, the configuration data includes repetition period and segment number.

In the above method, the availability of the configuration data is judged according to whether half of the maximum repetition period of all information blocks is not less than the total number of system frame numbers SFN occupied by each system information block and each scheduling block within the maximum repetition period , if not less than, it is judged that the configuration data is available; otherwise, it is judged that the configuration data is not available.

When the configuration data is available, calculate the total length of the scheduling information of the system information block corresponding to the set scheduling block according to the repetition period of each system information block, and determine the required scheduling block according to the total length of the scheduling information;

According to the repetition period of each system information block, determine the scheduling information of each information block, wherein, determining the scheduling information of each information block refers to searching for the determined scheduling block and each system information block in its corresponding repetition in the system frame number SFN sequence period, and mark it as "occupied" when determining that the vacancy is the initial position of the information block, and search for the vacancy of the subsequent segment in the repetition period corresponding to each information block according to the vacancy, and search for Arrived vacancies are marked as "occupied".

Wherein, when the set scheduling block is MIB, when the total length of the scheduling information of all system information blocks is less than or equal to the difference between the length of the broadcast channel BCH transport block and the set value, it is determined that only the MIB is needed for the scheduling block; otherwise, The set scheduling block is updated to MIB and SB1, and the required scheduling block is determined by calculating the total length of the scheduling information of the remaining SIBs except the scheduling information contained in the MIB.

Wherein, when the set scheduling blocks are MIB and SB1, when the total length of the scheduling information of the remaining SIBs except the scheduling information contained in the MIB is less than or equal to the length of the broadcast channel BCH transport block, it is determined that the scheduling block needs MIB and SB1; otherwise, update the set scheduling block to MIB, SB1 and SB2, and determine the required scheduling block by calculating the total length of the scheduling information of the remaining SIBs except the scheduling information contained in MIB and SB1.

Wherein, when the set scheduling blocks are MIB, SB1 and SB2, when the total length of the scheduling information of the remaining SIBs except the scheduling information contained in MIB and SB1 is less than or equal to the length of the broadcast channel BCH transport block, determine The scheduling block needs MIB, SB1 and SB2, otherwise, the scheduling block is determined to be MIB, SB1 and SB2, and SB1 and/or SB2 need to be segmented.

In the above method, determining the scheduling information of each information block refers to searching for the scheduling block and the vacancies of each system information block in its corresponding repetition period in the system frame number SFN sequence, and determining that the vacancy is the initial position of the information block mark it as "occupied", and search for vacancies in subsequent segments within the repetition period corresponding to each information block according to the vacancies, and mark the found vacancies as "occupied".

One-half of the repetition period of the system information block is not less than the sum of the number of system frame numbers SFN occupied by the scheduling block within the repetition period of the system information block and the total number of system frame numbers SFN occupied by all system information blocks.

A system information block scheduling device in a UMTS system, comprising:

A resource management unit, configured to manage configuration data of each information block, where the information block includes a scheduling block and a system information block;

a judging unit, configured to judge the availability of the current configuration data of each information block, and output the judging result to the dispatching unit;

A scheduling unit, configured to, when the configuration data is available and the system information block scheduling fails, determine the required scheduling blocks again according to the system information block scheduling scheme in which the configuration data is unavailable, and determine the related scheduling of each scheduling block and each system information block information, when the configuration data is unavailable, determine the required scheduling blocks according to the system information block scheduling scheme in which the configuration data is unavailable, and determine the related scheduling information of each scheduling block and each system information block;

a sending unit, configured to provide the related scheduling information to the user terminal;

Wherein, when the configuration data is unavailable, the scheduling unit is further configured to calculate the repetition period of the system information block corresponding to the set scheduling block according to the repetition period of each scheduling block and the parameter value of the scheduling block, and calculate the set repetition period according to the repetition period. The length of the scheduled scheduling block, when the length of the scheduled scheduling block is less than or equal to the length of the broadcast channel BCH transmission block, the scheduled scheduling block is determined as the required scheduling block, otherwise, the scheduled scheduling block is increased the number of blocks, and recalculate the length of the set scheduling block until a suitable scheduling block is found, wherein the set scheduling block includes: the main system information block (MIB), the first scheduling block (SB1), and the second One or more of the scheduling blocks (SB2).

The judging unit judges the availability of the configuration data according to whether half of the maximum repetition period of all information blocks is not less than the total number of system frame numbers SFN occupied by each system information block and scheduling block within the maximum repetition period, If not, it is determined that the configuration data is available; otherwise, it is determined that the configuration data is not available.

When the configuration data is available, the scheduling unit calculates the total length of the scheduling information of the system information block corresponding to the set scheduling block according to the repetition period of each system information block, and determines the required scheduling according to the total length of the scheduling information and, according to the repetition period of each system information block, determine the scheduling information of each information block, wherein, determining the scheduling information of each information block refers to searching for the determined scheduling block and each system information block in the system frame number SFN sequence The vacancy in its corresponding repetition period, and when it is determined that the vacancy is the initial position of the information block, mark it as "occupied", and search for the vacancy of the subsequent segment in the repetition period corresponding to each information block according to the vacancy , and mark the found vacancies as "occupied".

When the set scheduling block is MIB, the scheduling unit determines that only the MIB is needed for scheduling when the total length of the scheduling information of all system information blocks is less than or equal to the difference between the length of the broadcast channel BCH transport block and the set value; otherwise , update the set scheduling block to MIB and SB1, and determine the required scheduling decision by calculating the total length of the scheduling information of the remaining SIBs except the scheduling information contained in the MIB.

When the set scheduling blocks are MIB and SB1, the scheduling unit determines when the total length of the scheduling information contained in the remaining SIBs except the scheduling information in the MIB is less than or equal to the length of the broadcast channel BCH transport block The scheduling block needs MIB and SB1; update the set scheduling block to MIB, SB1 and SB2, and determine the required scheduling block by calculating the total length of the scheduling information of the remaining SIBs except the scheduling information contained in MIB and SB1.

When the scheduling block set by the scheduling unit is MIB, SB1 and SB2, when the total length of the tuning information of the remaining SIB except the scheduling information contained in MIB and SB1 is less than or equal to the length of the broadcast channel BCH transport block , it is determined that the scheduling block needs MIB, SB1 and SB2, otherwise, it is determined that the scheduling block is MIB, SB1 and SB2, and SB1 and/or SB2 need to be segmented.

When the scheduling unit calculates the repetition period of the system information block, half of the repetition period of the system information block is not less than the number of system frame numbers SFN occupied by the scheduling block in the repetition period of the system information block and all system information information Determine the sum of the total number of occupied system frame numbers SFN.

The beneficial effects of the present invention are as follows:

The present invention adopts the method of pre-evaluating the availability of configuration data to accurately determine the number of scheduling blocks required and the scheduling information of each system information block, and adopts the method to avoid blind scheduling operations and reduce the possibility of system information block scheduling failure; and , in the case of inappropriate configuration data, the method of the present invention can still successfully complete the scheduling of the system information block, thereby ensuring the validity and reliability of the scheduling of the system information block.

Description of drawings

FIG. 1 is a schematic structural diagram of a system information block scheduling device in an embodiment of the present invention;

FIG. 2 is a main implementation flowchart of system information block scheduling in an embodiment of the present invention;

FIG. 3 is a flow chart of the implementation of the system information block scheduling scheme 1 in the embodiment of the present invention;

Fig. 4 is a flow chart of implementing the second system information block scheduling scheme in the embodiment of the present invention.

Detailed ways

In order to solve the problem that the successful scheduling of system information blocks cannot be guaranteed in the prior art, the present invention pre-evaluates the availability of configuration data before system information scheduling, and further determines the system information block scheduling scheme according to the evaluation results.

In the embodiment of the present invention, the system information block is divided into two types, that is, a scheduling block and a system information block; wherein, the scheduling block includes MIB, SB1 and SB2, and other system information blocks are called system information blocks (SIBs).

In this embodiment, the following two schemes can be adopted to implement the scheduling of system information blocks:

Solution 1: first obtain the repetition period of each system information block, determine the required scheduling block by calculating the total length of the scheduling information of each system information block, and then determine each scheduling block and related scheduling information of each system information block.

Solution 2: First obtain the repetition period of each scheduling block and select the parameter value of the scheduling block to calculate the repetition period of each system information block, and calculate the length of each scheduling block according to the repetition period to determine the required scheduling block, and then determine each scheduling block Scheduling information related to each system information block.

Please refer to FIG. 1 , which is a schematic structural diagram of a device for scheduling system information blocks in a UMTS system according to this embodiment. The device includes a resource management unit 10, a judging unit 11, a scheduling unit 12, and a sending unit 13; the resource management unit 10, It is used to manage the configuration data of each scheduling block and each system information block; the judgment unit 11 is used to judge the availability of the current configuration data of each scheduling block and each system information block, and output the judgment result to the scheduling unit 12; The scheduling unit 12 is configured to select a corresponding system information block scheduling scheme according to the judgment result, and determine each scheduling block and related scheduling information of each system information block; when the configuration data is available, use the above-mentioned scheme 1 for scheduling; When the configuration data is unavailable, the second scheme above is used for scheduling; the sending unit 13 is configured to provide the related scheduling information to the user terminal.

As shown in Figure 2, the main implementation process of system information block scheduling in the UMTS system is as follows:

In step 200, the resource management unit 10 obtains the repetition period SIB_REP of each scheduling block and each system information block.

Step 201, perform ASN.1 encoding on each scheduling block and each system information block.

Step 202. Calculate the segment number SEG_COUNT of each system information block. At this time, the segment number corresponding to each scheduling block is 1 by default.

Step 203, selecting the largest repetition period MAX_REP from all repetition periods.

Step 204, the resource management unit 10 brings SIB_REP, MAX_REP and SEG_COUNT into the following formula;

$\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; MaxIb</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; MAX</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}{\mathrm{<span\; class="notranslate">\; SIBs</span>}<span\; class="notranslate">\; \_</span>{\mathrm{<span\; class="notranslate">\; REP</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; SEG</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; COUN</span>}{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&le;</span>\mathrm{<span\; class="notranslate">\; MAX</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

That is: the total number of system frame numbers SFN occupied by each system information block and each scheduling block in the maximum repetition period of all information blocks is less than or equal to one-half of the maximum repetition period; where: MaxIb is all The total number of information blocks (including MIB, SB1 and SB2).

Step 205, the judging unit 11 judges whether formula (1) is true; if true, execute step 206; otherwise, execute step 208.

In step 206, the scheduling unit 12 selects scheme one to perform system information block scheduling.

Step 207 , the scheduling unit 12 judges whether the scheduling of scheme one is successful; if successful, execute step 209 ; otherwise, execute step 208 .

In step 208, the scheduling unit 12 selects the second scheme to perform system information block scheduling.

Step 209, the sending unit 13 provides the scheduling information of all scheduling blocks and system information blocks to the user terminal.

The following describes schemes 1 and 2 in detail respectively.

For solution one, first obtain the repetition period of each system information block, determine the required scheduling block by calculating the total length of the scheduling information of each system information block, and then determine each scheduling block and related scheduling information of each system information block. As shown in Figure 3, the process of implementing system information block scheduling using scheme 1 is as follows:

Step 300, the resource management unit 10 obtains the SIB_REP and SEG_COUNT of each system information block.

Step 301, assuming that the scheduling information of all SIBs can be accommodated by using the scheduling block MIB, the scheduling unit 12 calculates the total length Len _{Total_Sib} of the scheduling information of all SIBs;

① Calculate the coded length of each system information block according to the following formula:

${\mathrm{<span\; class="notranslate">\; Len</span>}}_{\mathrm{<span\; class="notranslate">\; Sibi</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 15</span>}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; B</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; log</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; SIBs</span>}<span\; class="notranslate">\; \_</span>{\mathrm{<span\; class="notranslate">\; REP</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; C</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>$

in,

② Calculate the encoded length of the MIB block according to the following formula:

${\mathrm{<span\; class="notranslate">\; Len</span>}}_{\mathrm{<span\; class="notranslate">\; MIB</span>}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; SB</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; SB</span>}\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; A</span>}<span\; class="notranslate">\; +</span>\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; no</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; Len</span>}}_{\mathrm{<span\; class="notranslate">\; Sibi</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; )</span>$

in,

n is the number of information blocks

in,

RNC: Radio Network controller (Radio Network controller)

MNC: Mobile Network Code (Mobile Network Code)

③Calculate the total length of scheduling information Len _{Total_Sib} of all SIBs according to the following formula:

${\mathrm{<span\; class="notranslate">\; Len</span>}}_{\mathrm{<span\; class="notranslate">\; Total</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; Sib</span>}}<span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; MaxSib</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; Len</span>}}_{\mathrm{<span\; class="notranslate">\; Sibi</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; )</span>$

In this step, the information block includes all system information blocks SIB, scheduling block SB1 and scheduling block SB2; the information block MaxSib to be sent includes all system information blocks SIB.

Step 302 , the scheduling unit 12 judges whether Len _{Total_Sib} ≤ Len _BCH -A holds true; if true, execute step 303 ; otherwise, execute step 304 .

Step 303 , the scheduling unit 12 determines that only the MIB scheduling block is needed to accommodate the scheduling information of all SIBs, and step 316 is executed.

Step 304, assuming that the scheduling information of all SIBs can be accommodated by using MIB and SB1, the scheduling unit 12 calculates the length Len _MIB (the scheduling information of SB1 is included in the MIB) after MIB encoding; first, according to the above formula (2), calculate SIB ( Including the encoded length Len _Sib of the scheduling block SB1); then according to the above formula (3), calculate the encoded length Len _MIB of the MIB; in this step, the information block includes all system information blocks SIB and scheduling block SB1.

Step 305, the scheduling unit 12 calculates the total length of scheduling information Len _{Total_Sib} of all SIBs according to the above formula (4); in this step, the information block MaxSib to be sent includes all system information blocks SIB, scheduling block MIB and scheduling block SB1.

Step 306, the scheduling unit 12 calculates the total length of the scheduling information Len _{Leaving1_Sib} of the remaining SIBs; according to the following formula, the total length of the scheduling information of the remaining SIBs except the scheduling information that can be accommodated in the MIB is obtained.

Len _{Leaving1_Sib} = Len _{Total_Sib} - Len _MIB (5)

Step 307 , the scheduling unit 12 judges whether Len _{Leaving1_Sib} ≤ Len _BCH holds true; if true, execute step 308 ; otherwise, execute step 309 .

Step 308 , the scheduling unit 12 determines that the scheduling information of all SIBs needs to be accommodated in the MIB and SB1 scheduling blocks, and step 316 is executed.

Step 309, assuming that MIB, SB1 and SB2 are used to accommodate the scheduling information of all SIBs, the scheduling unit 12 calculates the length Len _MIB of the MIB according to the above formulas (2) and (3) (the scheduling information of the scheduling blocks SB1 and SB2 is included in the MIB) ; In this step, the information blocks include all system information blocks SIB, scheduling block SB1 and scheduling block SB2.

Step 310, the scheduling unit 12 calculates the length Len _SB1 of SB1 according to the above formulas (2) and (3); in this step, the information block includes all system information blocks SIB.

Step 311, the scheduling unit 12 calculates the total length Len _{Total_Sib} of the scheduling information of all SIBs according to the above formula (4); in this step, the information block MaxSib to be sent includes all system information blocks SIB, scheduling block MIB, scheduling block SB1 and scheduling block SB2.

Step 312, the scheduling unit 12 calculates the total length of the scheduling information of the remaining SIBs Len _{Leaving2_Sib} ; according to the following formula, the total length of the scheduling information of the remaining SIBs except the scheduling information that can be accommodated in the MIB and SB1 is obtained.

Len _{Leaving2_Sib} = Len _{Total_Sib} - Len _MIB - Len _SB1 (6)

Step 313 , the scheduling unit 12 judges whether Len _{Leaving2_Sib} ≤ Len _BCH holds true; if true, execute step 314 ; otherwise, execute step 315 .

Step 314 , the scheduling unit 12 determines that the scheduling blocks of MIB, SB1 and SB2 are required to accommodate the scheduling information of all SIBs, and step 316 is executed.

Step 315, the scheduling unit 12 segments SB1 and/or SB2, determines that MIB, SB1 and SB2 are needed and SB1 and/or SB2 are segmented to accommodate the scheduling information of all SIBs.

Step 316, the scheduling unit 12 determines the SIB_POS and SIB_OFF of the main system information block MIB; the starting position of the MIB in the system frame number (System Frame Number, SFN) sequence period is fixed, that is, the SIB_POS is always 0; in a broadcast period According to the repeat period SIB_REP of the MIB, all SFN location indications used for transmitting the MIB are marked as "occupied".

Step 317, the scheduling unit 12 determines the SIB_POS and SIB_OFF of the scheduling blocks SB1, SB2 and SIBs of each system information block;

Step 318, the sending unit 13 provides the scheduling information of all scheduling blocks and system information blocks to the user terminal.

The main implementation process of the above-mentioned step 317 is as follows:

① Determine the SIB_POS of each information block

In the SFN sequence, each system information block and call block SB1, SB2 searches for a vacancy from SFN=2 to its corresponding SIB_REP; if a vacancy is found, mark this position as "occupied"; or, although the SFN has been occupied, its The remaining space is still enough to accommodate the information block (if the information block type is a short full segment or the first segment type of the information block is a short segment), then confirm this position as the SIB_POS of the information block.

② Determine the position offset SIB_OFF of all segments of each information block

According to the SIB_POS obtained in the above steps, each system information block and call block SB1, SB2 search for the vacancy of the second segment in the SFN sequence from the corresponding SIB_POS+2 to SIB_REP respectively. The difference is recorded as SIB_OFF[1] of the second segment, and then from the position of the second segment to SIB_REP, start to find the position of the third segment, and recursively until all the positions of the segments are found.

③ Mark all positions of each information block in the broadcast cycle as "occupied"

Mark the position SIB_POS+n×SIB_REP of the information block as "occupied";

count是分段数，从1到SEG_COUNT-1。Mark each segment position SIB_POS+n*SIB_REP+SIB_OFF[count] of the information block as "occupied"; where: n=0, 1, 2, ...,

count is the number of segments, from 1 to SEG_COUNT-1.

For scheme 2, first obtain the repetition period of each scheduling block and select the parameter value of the scheduling block to calculate the repetition period of each system information block, and calculate the length of each scheduling block according to the repetition period to determine the required scheduling block, and then determine each scheduling block block and scheduling information related to each system information block. As shown in Figure 4, the process of implementing system information block scheduling using scheme 2 is as follows:

In step 400, the resource management unit 10 obtains the repetition periods of MIB, SB1 and SB2, which are recorded as MIB_REP, SB1_REP and SB2_REP respectively; assuming that the repetition periods of all other system information blocks are the same, they are recorded as COMMON_REP.

Step 401, the scheduling unit 12 selects the S value;

The initial assumption is that only one scheduling block of MIB is needed, and COMMON_REP is calculated according to the following formula:

$\mathrm{<span\; class="notranslate">\; S</span>}<span\; class="notranslate">\; +</span>\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 0</span>}}{\overset{\mathrm{<span\; class="notranslate">\; MaxSib</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; SEG</span>}<span\; class="notranslate">\; \_</span>{\mathrm{<span\; class="notranslate">\; COUNT</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; \&le;</span>\mathrm{<span\; class="notranslate">\; COMMON</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 7</span>}<span\; class="notranslate">\; )</span>$

That is, the sum of the number of SFNs occupied by the scheduling block within the repetition period of the system information block and the total number of SFNs occupied by all system information blocks is less than or equal to half of the repetition period of the system information block.

Wherein, the S indicates the number of SFN occupied by the required scheduling block within the repetition period of the system information block. The number of scheduling blocks is different, and the corresponding S is also different. The calculation formula is as follows:

$S=\frac{\mathrm{COMMON}\_\mathrm{REP}}{\mathrm{MIB}\_\mathrm{REP}}$ (requires MIB only);

$S=\frac{\mathrm{COMMON}\_\mathrm{REP}}{\mathrm{MIB}\_\mathrm{REP}}+\frac{\mathrm{COMMON}\_\mathrm{REP}}{\mathrm{SB}1\_\mathrm{REP}}$ (requires MIB and SB1);

$S=\frac{\mathrm{COMMON}\_\mathrm{REP}}{\mathrm{MIB}\_\mathrm{REP}}+\frac{\mathrm{COMMON}\_\mathrm{REP}}{\mathrm{SB}1\_\mathrm{REP}}+\frac{\mathrm{COMMON}\_\mathrm{REP}}{\mathrm{SB}2\_\mathrm{REP}}$ (requires MIB, SB1 and SB2);

$\mathrm{<span\; class="notranslate">\; S</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; COMMON</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}{\mathrm{<span\; class="notranslate">\; MIB</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; COMMON</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}{\mathrm{<span\; class="notranslate">\; SB</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; SB</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; SEG</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; COUNT</span>}$

$<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; COMMON</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}{\mathrm{<span\; class="notranslate">\; SB</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; REP</span>}}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; SB</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; SEG</span>}<span\; class="notranslate">\; \_</span>\mathrm{<span\; class="notranslate">\; COUNT</span>}$

(MIB, SB1 and SB2 are required, and SB1 and/or SB2 are segmented);

Step 402, the scheduling unit 12 calculates COMMON_REP according to the above formula (7).

Step 403, the scheduling unit 12 calculates the encoded length Len _MIB of the scheduling block according to the above formulas (2) and (3).

Step 404, the scheduling unit 12 judges whether Len _MIB/SB1/SB2 >Len _BCH is established; if yes, return to step 401; otherwise, continue to step 405; if Len _MIB >Len _BCH , it means that all SIBs cannot be accommodated in the MIB Scheduling information, so it is assumed that the scheduling blocks MIB and SB1 are needed. At this time, return to step 401, reselect the S value and bring it into the above formula (7) to calculate the new COMMON_REP, and then bring COMMON_REP into the above formula (2) and ( 3) Calculate Len _MIB and Len _SB1 , and then judge whether Len _MIB and Len _SB1 are both less than or equal to Len _BCH , if Len _MIB and Len _SB1 are both less than or equal to Len _BCH , then determine the need to schedule block MIB and SB1; otherwise, assume The scheduling blocks MIB, SB1 and SB2 are required, and the above steps 401 to 404 are repeated until a suitable scheduling block is found.

In step 405, the scheduling unit 12 determines the SIB_POS and SIB_OFF of the main system information block MIB; the implementation process of this step is the same as that of the above step 316, and will not be repeated here.

In step 406, the scheduling unit 12 determines the SIB_POS and SIB_OFF of the scheduling blocks SB1, SB2 and SIBs of each system information block; the implementation process of this step is the same as that of the above step 317, and will not be repeated here.

Step 407, the sending unit 13 provides the scheduling information of all scheduling blocks and system information blocks to the user terminal.

It can be seen from the above system information block scheduling process that the present invention can configure the repetition period of the system information block according to the needs, so as to meet the specific requirements for the system information of the cell; Under the circumstances, the success of system information block scheduling can still be ensured by adopting the present invention. In this way, the effectiveness of system information block scheduling is given priority, and the reliability of system information block scheduling is also ensured at the same time.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (17)

1. A method for system information block scheduling in a UMTS system, characterized in that, comprising steps: Judging the availability of current configuration data for all information blocks, the information blocks include scheduling blocks and system information blocks; When the configuration data is available and the system information block scheduling fails, re-determine the required scheduling blocks according to the system information block scheduling scheme in which the configuration data is unavailable, and determine each scheduling block and related scheduling information of each system information block, and set the Provide the relevant scheduling information to the user terminal; When the configuration data is unavailable, determine the required scheduling blocks according to the system information block scheduling scheme where the configuration data is unavailable, and determine the related scheduling information of each scheduling block and each system information block, and provide the related scheduling information to the user terminal; Wherein, the system information block scheduling scheme for which the configuration data is unavailable includes: According to the repetition period of each scheduling block and the parameter value of the scheduling block, the repetition period of the system information block corresponding to the set scheduling block is calculated, and the length of the set scheduling block is calculated according to the repetition period, when the set scheduling block When the lengths are all less than or equal to the length of the broadcast channel BCH transmission block, the set scheduling block is determined as the required scheduling block, otherwise, the number of the set scheduling blocks is increased, and the length of the set scheduling block is recalculated. Until a suitable scheduling block is found, wherein the set scheduling block includes: one or more of the main system information block (MIB), the first scheduling block (SB1), and the second scheduling block (SB2). 2. The method according to claim 1, characterized in that the scheduling blocks comprise a main system information block (MIB), a first scheduling block (SB1) and a second scheduling block (SB2). 3. The method of claim 2, wherein the configuration data includes a repetition period and a number of segments. 4. The method according to claim 3, wherein, according to whether one-half of the maximum repetition period in all information blocks is not less than the system frame number occupied by each system information block and each scheduling block within the maximum repetition period The total number of SFNs determines the availability of the configuration data. If it is not less than, it is determined that the configuration data is available; otherwise, it is determined that the configuration data is not available. 5. The method according to claim 4, wherein when the configuration data is available, the total length of the scheduling information of the system information block corresponding to the set scheduling block is calculated according to the repetition period of each system information block, and according to The total length of the scheduling information determines the required scheduling blocks; According to the repetition period of each system information block, determine the scheduling information of each information block, wherein, determining the scheduling information of each information block refers to searching for the determined scheduling block and each system information block in its corresponding repetition in the system frame number SFN sequence period, and mark it as "occupied" when determining that the vacancy is the initial position of the information block, and search for the vacancy of the subsequent segment in the repetition period corresponding to each information block according to the vacancy, and search for Arrived vacancies are marked as "occupied". 6. The method according to claim 5, wherein when the set scheduling block is MIB, the total length of the scheduling information of all system information blocks is less than or equal to the length of the broadcast channel BCH transport block and the set value If there is a difference, determine that the scheduling block only needs MIB; otherwise, update the set scheduling block to MIB and SB1, by calculating the total length of the scheduling information of the remaining system information blocks (SIBs) except the scheduling information contained in the MIB. Determine the required scheduling blocks. 7. The method according to claim 6, wherein when the set scheduling blocks are MIB and SB1, the total length of the scheduling information of the remaining SIBs except the scheduling information contained in the MIB is less than or equal to the broadcast channel When the length of the BCH transmission block is determined, the scheduling block needs MIB and SB1; otherwise, the set scheduling block is updated to MIB, SB1 and SB2, by calculating the scheduling information of the remaining SIBs except the scheduling information contained in MIB and SB1 The total length is used to determine the required scheduling block. 8. The method according to claim 7, wherein, when the scheduled scheduling blocks are MIB, SB1 and SB2, the total length of the scheduling information of the remaining SIBs except the scheduling information contained in MIB and SB1 is less than Or when it is equal to the length of the broadcast channel BCH transport block, it is determined that the scheduling block needs MIB, SB1 and SB2; otherwise, it is determined that the scheduling block is MIB, SB1 and SB2, and SB1 and/or SB2 need to be segmented. 9. The method according to claim 1, wherein determining the scheduling information of each information block refers to searching for the scheduling block and the vacancies of each system information block in its corresponding repetition period in the system frame number SFN sequence, and When it is determined that the vacancy is the initial position of the information block, it is marked as "occupancy", and according to the vacancy, search for the vacancy of the subsequent segment in the repetition period corresponding to each information block, and mark the vacancy found as " occupy". 10. The method according to claim 1, wherein one-half of the system information block repetition period is not less than the number of system frame numbers SFN occupied by the scheduling block within the system information block repetition period and all system information Blocks occupy the sum of the total number of system frame numbers SFN. 11. A system information block scheduling device in a UMTS system, characterized in that it comprises: A resource management unit, configured to manage configuration data of each information block, where the information block includes a scheduling block and a system information block; a judging unit, configured to judge the availability of the current configuration data of each information block, and output the judging result to the dispatching unit; A scheduling unit, configured to, when the configuration data is available and the system information block scheduling fails, determine the required scheduling blocks again according to the system information block scheduling scheme in which the configuration data is unavailable, and determine the related scheduling of each scheduling block and each system information block information, when the configuration data is unavailable, determine the required scheduling blocks according to the system information block scheduling scheme in which the configuration data is unavailable, and determine the related scheduling information of each scheduling block and each system information block; a sending unit, configured to provide the related scheduling information to the user terminal; Wherein, when the configuration data is unavailable, the scheduling unit is further configured to calculate the repetition period of the system information block corresponding to the set scheduling block according to the repetition period of each scheduling block and the parameter value of the scheduling block, and calculate the set repetition period according to the repetition period. The length of the scheduled scheduling block, when the length of the scheduled scheduling block is less than or equal to the length of the broadcast channel BCH transmission block, the scheduled scheduling block is determined as the required scheduling block, otherwise, the scheduled scheduling block is increased the number of blocks, and recalculate the length of the set scheduling block until a suitable scheduling block is found, wherein the set scheduling block includes: the main system information block (MIB), the first scheduling block (SB1), and the second One or more of the scheduling blocks (SB2). 12. The device according to claim 11, wherein the judging unit is based on whether one-half of the maximum repetition period of all information blocks is not less than that occupied by each system information block and scheduling block within the maximum repetition period The total number of system frame numbers SFN determines the availability of the configuration data, if not less than, it is determined that the configuration data is available; otherwise, it is determined that the configuration data is not available. 13. The device according to claim 12, wherein the scheduling unit calculates the scheduling information of the system information block corresponding to the set scheduling block according to the repetition period of each system information block when the configuration data is available total length, and determine the required scheduling blocks according to the total length of the scheduling information; and, according to the repetition period of each system information block, determine the scheduling information of each information block, wherein, determining the scheduling information of each information block refers to Search the determined scheduling block and the vacancy of each system information block in its corresponding repetition period in the number SFN sequence, and mark it as "occupied" when it is determined that the vacancy is the initial position of the information block, and according to the vacancy In the repetition period corresponding to each information block, the vacancies of subsequent segments are searched, and the vacancies found are marked as "occupied". 14. The device according to claim 13, wherein when the set scheduling block is MIB, the total length of the scheduling information of all system information blocks of the scheduling unit is less than or equal to the length of the broadcast channel BCH transport block and When the difference value is set, it is determined that only the MIB is needed for the scheduling block; otherwise, the set scheduling block is updated to MIB and SB1, which is determined by calculating the total length of the scheduling information of the remaining SIBs except the scheduling information contained in the MIB The required scheduling block. 15. The device according to claim 14, wherein when the set scheduling blocks are MIB and SB1, the scheduling unit sums up the scheduling information of the remaining SIBs except the scheduling information contained in the MIB When the length is less than or equal to the length of the broadcast channel BCH transmission block, it is determined that the scheduling block needs MIB and SB1; otherwise, the set scheduling block is updated to MIB, SB1 and SB2, and the scheduling information contained in MIB and SB1 is calculated by calculating The total length of the scheduling information of the remaining SIBs is used to determine the required scheduling block. 16. The device according to claim 15, wherein when the set scheduling blocks are MIB, SB1 and SB2, the total length of the scheduling information of the remaining SIBs except the scheduling information contained in MIB and SB1 is less than Or when it is equal to the length of the broadcast channel BCH transport block, it is determined that the scheduling block needs MIB, SB1 and SB2; otherwise, it is determined that the scheduling block is MIB, SB1 and SB2, and SB1 and/or SB2 need to be segmented. 17. The device according to claim 11, wherein when the scheduling unit calculates the repetition period of the system information block, half of the repetition period of the system information block is not less than the interval between the scheduling block and the system information block. The sum of the number of occupied system frame numbers SFN in the repetition period and the total number of occupied system frame numbers SFN of all system information blocks.

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