CN109982267A - A kind of transmission method of TCCH channel signal - Google Patents
A kind of transmission method of TCCH channel signal Download PDFInfo
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- CN109982267A CN109982267A CN201711455553.6A CN201711455553A CN109982267A CN 109982267 A CN109982267 A CN 109982267A CN 201711455553 A CN201711455553 A CN 201711455553A CN 109982267 A CN109982267 A CN 109982267A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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Abstract
This application discloses a kind of transmission methods of TCCH channel signal, comprising: base station receives the second class group control information that core net is sent to a group user；If the second class group control information is the transmission for the first time for the group user, the base station is by the second class group control information preservation in node B cache；If the second class group control information is not the transmission for the first time for group user, which is replaced the second class group control information of the group user saved in the node B cache by base station；After the second class group control information saved in node B cache is sent n times with period 1 for setting by base station, then issue with the second round of setting the second class group control information of the group user saved in node B cache.Using the application, interface-free resources can be saved while guaranteeing to receive group control information in time.
Description
Technical field
This application involves the communication technology, in particular to a kind of transmission method of TCCH channel signal.
Background technique
Broadband cluster communication (Boardband Trunking Communication, B-TrunC) is led to by broadband cluster
" LTE Digital Transmission+cluster voice communication " private network broadband collection based on TD-LTE that letter (B-TrunC) industry alliance organizes to set up
Group's system standard, the agreement is mainly for the broadbands such as cluster voice, cluster video and media colony dispatching group service function
Standardized, have flexible bandwidth, spectral efficient, low time delay, high reliability feature, can satisfy professional user to voice collection
The demands such as group, wideband data, emergency command scheduling.
Btrunc agreement increases the dedicated logic channel of cluster, such as cluster on the basis of existing TD-LTE logic channel
Control channel (TCCH), group service channel (TTCH), clustered paging control channel (TPCCH).Wherein, TCCH is special as cluster
Point-to-multipoint down channel is used for transmission group control information, is provided according to Btrunc agreement, and group control information is divided into
Two classes.The first kind belongs to the group control information that aperiodicity issues, and for such group control information, base station is saturating as pipeline
Biography, specific processing are handled with DCCH channel data under TD-LTE；Second class belongs to the group control information periodically issued,
Base station needs periodically to issue the group control information, claims this kind of group control information for needing periodically to issue in the application
For the second class group control information.Although Btrunc agreement defines the definition of the second class group control information, but to base station
How the period issues the second class group control information not clear stipulaties.
Since the subscriber control information for needing periodically to issue is not present in TD-LTE, TD-LTE solution party can not be referred to
Case carries out group control information periodically to issue processing, if the scheme that the fixed cycle issues is directlyed adopt, if fixed cycle mistake
It is short, it will lead to a large amount of interface-free resources of TCCH channel occupancy, interface-free resources caused to waste, if the fixed cycle is too long, will lead to terminal
It is too long etc. group control information time to be received, influence user's perception.
Summary of the invention
The application provides a kind of transmission method of TCCH channel signal, can guarantee to receive group control information in time
Meanwhile saving interface-free resources.
To achieve the above object, the application adopts the following technical scheme that
A kind of transmission method of TCCH channel signal, comprising:
Base station receives the second class group control information that core net is sent to a group user；Wherein, second monoid
Group control information is the group control information periodically issued；
If the second class group control information is the transmission for the first time for the group user, the base station will be sent
To the group user the second class group control information preservation in node B cache；If the second class group control information is not
It is the transmission for the first time for the group user, then the second class group control for being sent to the group user is believed in the base station
Breath replaces the second class group control information of the same group user saved in the node B cache；
The base station is with period 1 for setting by the second monoid of the group user saved in the node B cache
After group control information sends n times, then the second of the group user saved in node B cache is issued with the second round of setting
Class group control information；
Wherein, the period 1 is less than the second round, and the N is preset positive integer.
Preferably, stopping issuing the second class group corresponding to the group user when base station is received from the core net
When controlling the instruction of information, the second class group control of the group user saved in the node B cache is believed in the base station
Breath is deleted, and dwelling period issues the second class group control information of the group user saved in the node B cache.
Preferably, when base station sends the second class group control information, if there are multiple to be sent for synchronization
Two class group control information, then to sent all second group control information carry out priority ranking, according to priority by
High to Low sequence sends the second class group control information；
Wherein, when the waiting of the sending cycle according to locating for the second class group control information, the second class group control information
Long and/or the second class group control information generation time, carries out the priority ranking.
Preferably, when carrying out priority ranking, the second class group control information for sending according to the period 1
Priority is higher than the priority of the second class group control information sent according to the second round；
For all in the first sending cycle or all in the second different class group control information of the second sending cycle,
Priority ranking then is carried out according to the waiting time of corresponding second class group control information, waiting time is longer, and priority is higher；
All in the first sending cycle or all in the second sending cycle and waiting time identical the second different monoid
Group control information, then be ranked up, group priorities are higher, the hair of corresponding second class group control information according to group priorities
Send priority higher；
It is identical not all in the first sending cycle or all in the second sending cycle and waiting time and group priorities
The second same class group control information, then the generation time of corresponding second class group control information carries out priority ranking, generates
Time is more early, and priority is higher.
Preferably, calculating priority=A*W1* of each second class group control information when carrying out priority ranking
W2*W3+B*W2*W3+C*W3+D, wherein A, B, C, D respectively indicate the first priority, the second priority, third priority and
The value of four priority；The value range of A is { 0,1 }, if the transmission of the second class group control information is in period 1, A
Value is 1, and otherwise, A value is 0；Value B is determined according to the waiting time of the second class group control informedness, it is excellent according to group
First grade determines value C, determines value D according to the generation time of the second class group control information；W1, W2 and W3 are respectively first excellent
The weighting coefficient of first grade, the second priority and third priority；The value of W1 is not less than the maximum value of B, and the value of W2 is not less than C
Maximum value, the value of W3 is not less than the maximum value of D；Priority value is smaller, and priority is higher.
As seen from the above technical solution, in the application, base station receives the second monoid that core net is sent to a group user
Group control information.If the second class group control information is the transmission for the first time for group user, base station is by the second class group
Information preservation is controlled in node B cache；If the second class group control information is not the transmission for the first time for group user,
The second class group control information is replaced the second class group control of the same group user saved in node B cache by base station
Information；Second class group control information of the group user saved in node B cache is sent N with the period 1 set by base station
After secondary, then issue with the second round of setting the second class group control information of the group user saved in node B cache.Pass through
Above-mentioned processing is quickly sent when just starting to send the second class group control information with the minor cycle, guarantees that monitoring users connect in time
Receive the group control information；In the second class group control information of subsequent transmission, with large period slow transmission, guaranteeing to delay to connect
While the group's monitoring users entered can receive group control information, interface-free resources are saved.
Detailed description of the invention
Fig. 1 is the transmission method basic procedure schematic diagram of TCCH channel signal in the application.
Specific embodiment
In order to which the purpose, technological means and advantage of the application is more clearly understood, the application is done below in conjunction with attached drawing
It is further described.
The second class group control information is quickly issued to guarantee base station to group user, and the group for the access that guarantees to lag
Group monitoring users (UE for receiving group data) can receive the second class group control information, and the application proposes: base station is using big
Minor cycle mechanism issues the second class group control information to group user.
Fig. 1 is the transmission method basic procedure schematic diagram of TCCH channel signal in the application.As shown in Figure 1, this method packet
It includes:
Step 101, base station receives the second class group control information that core net is sent to a group user X.
As previously mentioned, the second class group control information is the group control information for needing periodically to issue.Base station connects from S1
Mouth receives issuing a notice for the second class group control information, which is to indicate to issue second for a group user X
Class group control information.Wherein, group user X can be identified with GroupIDx.Need exist for explanation a bit, in the application, group
Group user is group's concept defined in base station, and the corresponding UE of certain group is then known as group's monitoring users.Based on this, this step
In be the second class group control information that base station receives certain group user X.
Step 102, whether received second class group control information is head for group user X in judgment step 101
Otherwise secondary transmission, executes step 104 if so, thening follow the steps 103.
Step 103, the second class group control information of the received group user X of step 101 is stored directly in base by base station
It stands in caching.
The second class group control information is transmitted for the first time if it is for group user X, is not had then representing in node B cache
Have the second class group control information of group user X, then can directly by the second class group control information of group user X into
Row saves.
Step 104, base station the received second class group control information of step 101 is replaced saved in node B cache it is same
Second class group control information of one group user.
The second class group control information is transmitted for the first time if not for group user X, then representing in node B cache
The second class group control information for group user X is had existed, then needs to control using step 101 received second class group
Information processed replaces the second class group control information of group user X in node B cache.That is, by being saved in node B cache
Group user X the second class group control information deletion, by the received second class group control information preservation of step 101 in base
It stands in caching.
Step 105, the second class group of the group user X saved in node B cache is controlled with the period 1 set in base station
After information processed sends n times, then the second class group control of the group user X saved in node B cache is issued with the second round of setting
Information processed.
Here, the duration of period 1 be less than second round duration, thus realize the first minor cycle, again large period second
The transmission of class group control information.
Period 1, second round and the N of TCCH can pass through interface configurations.It is specifically as follows:
The value range { 40ms, 60ms, 80ms, 100ms, 200ms, 300ms, 400ms, 500ms } of TCCH period 1,
Default 80ms；
The value range { 1s~20s } of TCCH second round defaults 10s；
The value range { 1~10 } of the transmission times N of TCCH period 1 is defaulted 3 times.
So far, the basic procedure in the application terminates.By above-mentioned processing, so that just starting to carry out the control of the second class group
It when information processed is sent, is sent with the lesser period, to guarantee to issue the second class group control information as early as possible；Complete N
After the secondary minor cycle sends, the second class group control information is sent with the biggish period, the group of access monitors so that guarantee lags
User (UE for receiving group data) can receive the second class group control information and be not take up excessive system resource.
In addition, when sending the second class group control information in step 105, if the second class group that synchronization is to be sent
Control information there are it is multiple when, such as all there is the second class group control information for needing the period to issue in multiple group users, can be with
Priority ranking is carried out for each second class group control information, carries out the second class group according to the sequence of priority from high to low
Control the transmission of information.Base station is preferentially distributed interface-free resources to the second class group control information of high priority and is broadcast to
Need to receive the terminal of the second class group control information.
It, can sending cycle, the second class according to locating for the second class group control information when specific progress priority ranking
The generation time of the waiting time of group control information and/or the second class group control information carries out.
The rule of specific priority ranking, which can according to need, to be configured.For example, sent according to the period 1 second
The priority of class group control information is higher than the priority of the second class group control information sent according to second round；For all
In the first sending cycle or all in the second different class group control information of the second sending cycle, then according to corresponding second
The waiting time of class group control information carries out priority ranking, and waiting time is longer, and priority is higher；It is sent all in first
Period or all in the second sending cycle and waiting time identical the second different class group control information, then according to group
Priority is ranked up, and group priorities are higher, and the transmission priority of corresponding second class group control information is higher；All in
One sending cycle is controlled all in the second sending cycle and waiting time and group priorities identical the second different class group
Information processed, then the generation time of corresponding second class group control information carries out priority ranking, and generation time is more early, and priority is got over
It is high.
The queuing priority of each second class group control information of calculating, Lai Jinhang priority ranking can also be passed through.Example
Such as, " queuing priority "=A*W1*W2*W3+B*W2*W3+C*W3+D of the second class group control information, is worth smaller priority and gets over
It is high；
Wherein, A, B, C, D respectively indicate taking for the first priority, the second priority, third priority and the 4th priority
Value；
The value range of A is { 0,1 }, if the transmission of the second class group control information is in the period 1, A value is 1,
Otherwise, A value is 0；
Value B is determined according to the waiting time of the second class group control informedness, determines value C according to group priorities,
Value D is determined according to the generation time of the second class group control information；
W1 value range requires the maximum value for being not less than B, is at least 16 in this example；
W2 value range requires the maximum value for being not less than C, is at least 16 in this example；
Second priority value range is 0~16；Specifically: the second priority is initialized as 15；If the group control is believed
Breath meets after the big minor cycle after it is discharged into transmit queue, since current TTI is resource-constrained and priority is low, causes not obtaining down
Chance is sent out, then its second priority is set to MAX (0, the second priority -1)；And once its acquisition once issues chance, then its
Second priority should reset to 15；
Third priority (i.e. group priorities) value range is 0~15, is allocated to base station by S1 mouthfuls by core net；
Under " queuing priority " same case of paging acknowledgment, the new paging acknowledgment for generating or newly adjusting should come waiting
The second class group control information in page queue with identical " queuing priority " is last.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (5)
1. a kind of transmission method of TCCH channel signal characterized by comprising
Base station receives the second class group control information that core net is sent to a group user；Wherein, second class group is controlled
Information processed is the group control information periodically issued；
If the second class group control information is the transmission for the first time for the group user, the base station will be sent to institute
The second class group control information preservation of group user is stated in node B cache；If the second class group control information is not needle
Transmission for the first time to the group user, then the second class group control information for being sent to the group user is replaced in the base station
Change the second class group control information of the same group user saved in the node B cache；
The second class group of the group user saved in the node B cache is controlled with the period 1 set the base station
After information processed sends n times, then the second monoid of the group user saved in node B cache is issued with the second round of setting
Group control information；
Wherein, the period 1 is less than the second round, and the N is preset positive integer.
2. the method according to claim 1, wherein issuing correspondence when base station receives stopping from the core net
When the instruction of the second class group control information of the group user, described in the base station will save in the node B cache
Second class group control information deletion of group user, and dwelling period issues the group saved in the node B cache
The second class group control information of user.
3. method according to claim 1 or 2, which is characterized in that when base station sends the second class group control information, if
There are multiple second class group control information to be sent for synchronization, then to sent all second group control information into
The sequence of row major grade sends the second class group control information according to the sequence of priority from high to low；
Wherein, the sending cycle according to locating for the second class group control information, the second class group control information waiting time and/
Or second class group control information generation time, carry out the priority ranking.
4. according to the method described in claim 3, it is characterized in that, being sent out when carrying out priority ranking according to the period 1
The priority for the second class group control information sent is higher than the second class group control information sent according to the second round
Priority；
For all in the first sending cycle or all in the second different class group control information of the second sending cycle, then pressing
Photograph answers the waiting time of the second class group control information to carry out priority ranking, and waiting time is longer, and priority is higher；
All in the first sending cycle or all in the second sending cycle and waiting time identical different the second class group control
Information processed, then be ranked up according to group priorities, and group priorities are higher, and the transmission of corresponding second class group control information is excellent
First grade is higher；
It is identical different all in the first sending cycle or all in the second sending cycle and waiting time and group priorities
Second class group control information, then the generation time of corresponding second class group control information carries out priority ranking, generation time
More early, priority is higher.
5. according to the method described in claim 4, it is characterized in that, calculating each second class group when carrying out priority ranking
Control priority=A*W1*W2*W3+B*W2*W3+C*W3+D of information, wherein A, B, C, D respectively indicate the first priority, the
The value of two priority, third priority and the 4th priority；The value range of A is { 0,1 }, if the second class group control information
Transmission be in the period 1, then A value be 1, otherwise, A value be 0；When according to the waiting of the second class group control informedness
It is long to determine value B, value C is determined according to group priorities, and value is determined according to the generation time of the second class group control information
D；W1, W2 and W3 are respectively the weighting coefficient of the first priority, the second priority and third priority；The value of W1 is not less than B
Maximum value, the value of W2 is not less than the maximum value of C, and the value of W3 is not less than the maximum value of D；Priority value is smaller, preferentially
Grade is higher.
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Cited By (1)
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| CN112543206A (en) * | 2019-09-20 | 2021-03-23 | 成都鼎桥通信技术有限公司 | Group establishing method, access device, system and storage medium |
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