CN101651891A - System message updating method - Google Patents
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Abstract
The invention discloses a system message updating method to ensure that a base station and a terminal synchronously use parameters in updated system messages. The base station informs the terminal toread new message messages through system message modification paging, and broadcasts the updated system messages to the terminal in a system message modification period, wherein the system message modification period is a period of sending the system message modification paging by the base station; and the terminal triggers the updating of the system messages by receiving the system message modification paging, receives the system message modification period of the updated system messages, and reads the updated system messages, wherein the system message modification period is the period of sending the system message modification paging by the base station. The method can be applied to a long term evolution system.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of system message updating method.
Background technology
In Long Term Evolution (LTE) system, the base station notifies some relevant common parameters of the terminal sub-district to the terminal broadcast system message.System message is divided into Master Information Block (MIB) and system information block (SIB), wherein carry broadcast channel (BCH) among the MIB and go up the system information of transmission, comprise downlink system bandwidth, the automatic repeat requests indicating channel of physical mixed (Physical Hybrid ARQ Indicator Channel is abbreviated as PHICH) configuration and system frame number etc.SIB have first SIB (SIB1), second SIB (SIB2) ..., and the 8th SIB (SIB8) etc.Carry the sub-district among the SIB1 and insert the parameter relevant, comprise the schedule information of public land mobile network (PLMN) ID, Tracking Area Code (TAC), sub-district ID, label value (value tag) and other SIB and map information etc. with the other system message scheduling.Value tag among the SIB1 is used for representing whether the system information except that MIB and SIB1 has modification.Terminal judges by value tag among the SIB1 that newly receives SIB1 and preservation is whether identical whether system information changes after losing service recovery.Carry the parameter configuration of district common channel and shared channel among the SIB2, as random access parameter, reference signal power, Physical Uplink Control Channel (PUCCH) configuration parameter, Physical Uplink Shared Channel (PUSCH) configuration parameter and uplink power control parameter etc.What carry among the SIB3-8 is some parameter informations that the terminal under the idle condition is carried out the cell selecting gravity treatment.
Among agreement TS 36.331 V8.1.0, the system message update process as shown in Figure 1, promptly the parameter in system message has renewal, when system message notice terminal modifications physical layer parameter need be revised in the base station (when system message is revised cycle n), the base station is at first initiated system message to terminal and is revised paging in system message is revised cycle n+1, the notice terminal reads related system message when system message is revised cycle n+2.The base station is revised cycle n+2 in system message and is brought into use the parameters in updated system messages configuration, and in this cycle these parameter configuration is broadcast to terminal.Terminal receives broadcast when cycle n+2 after, use the parameters in updated system messages configuration immediately.Wherein, the aforesaid system message modification cycle is the paging of base station transmission system message modification cycle.
Terminal under the idle condition can re-use these informations parameter after reading updated system messages.And for the terminal under the connection status, if in system shown in Figure 1 message modification cycle n+2, terminal reads and adopts the time of new physical layer parameter and base station side more or less all delay can be arranged by comparison.New physical layer parameter is revised cycle n+2 in system message and has just been adopted at first for the base station, but for terminal, has only and receives that correctly system message just brings into use later on.So this brings into use temporal asynchronous with regard to having caused base station and terminal to the physical layer parameter of upgrading.Such as upgrade the PUCCH parameter when the base station, as shown in Figure 1, the zero hour is just used the PUCCH parameter after upgrading in the base station on the border that system message is revised cycle n+2, and terminal is revised cycle n+2 in system message and begun to obtain successively MIB, SIB1, SIB2 information.Have only after terminal has accurately been obtained these system messages, just can bring into use new PUCCH parameter.Because each terminal is obtained the new PUCCH parameter time in the sub-district have and early have lately, can't know what terminal bring into use new PUCCH parameter constantly so the base station is possibly.This just causes base station and end side to inconsistent on service time of the PUCCH parameter upgraded.Under the good situation of channel quality, probably there is a few tens of milliseconds this time difference, under the situation of bad channel quality, may reach a second level.
Summary of the invention
Technical problem to be solved by this invention is to be a kind of system message updating method need be provided, and makes base station and terminal synchronizes use parameters in updated system messages.
In order to solve the problems of the technologies described above, the present invention at first provides a kind of system message updating method, the base station is revised the page notification terminal by system message and is read new system message, to described terminal broadcasting updated system messages, the described system message modification cycle is that the base station sends the cycle that described system message is revised paging in the system message modification cycle in described base station.
In the aforesaid method, described base station can be revised the next system message modification cycle in cycle in described system message and be used described parameters in updated system messages.
Further, described base station can be at the label value in first system information block of described next system message modification cycle update system message.
In the aforesaid method, described updated system messages can be broadcasted to described terminal by physical accidental access channel parameter in second system information block of the physical layer parameter in the modification system message, system message or the Physical Uplink Control Channel parameter in described second system information block in the described system message modification cycle in described base station.
Further, described base station can be by revising described physical layer parameter when described terminal is broadcasted described updated system messages, revise in described system message described base station increases the indication information that a described physical layer parameter of sign changes in the paging, described terminal reads described updated system messages in the described system message modification cycle.
And, described base station can be by revising described physical accidental access channel parameter or Physical Uplink Control Channel parameter when described terminal is broadcasted described updated system messages, and described base station and terminal are used the system message before the described renewal in the described system message modification cycle.
In order to solve the problems of the technologies described above, the present invention also provides a kind of system message updating method, terminal is come the triggering system information updating by the paging of receiving system message modification, described terminal is revised the cycle in the system message of receiving updated system messages, read described updated system messages, the described system message modification cycle is that the base station sends the cycle that described system message is revised paging.
In the aforesaid method, described terminal can be used described parameters in updated system messages in the next system message modification cycle in described system message modification cycle.
In the aforesaid method, described terminal can be learned described updated system messages by the Physical Uplink Control Channel parameter in the physical accidental access channel parameter in second system information block of the physical layer parameter in the described updated system messages, system message or described second system information block.
Further, for the terminal that comes back to the overlay area, described terminal can read described updated system messages according to the indication information that the sign physical layer parameter of carrying in the described system message modification paging changes in the described system message modification cycle; Or
For the terminal that inserts at random, learn described updated system messages by described physical accidental access channel parameter, the system message before then can be in the described system message modification cycle using described renewal with described base station; Or
For the terminal under the connection status, learn described updated system messages by described Physical Uplink Control Channel parameter, the system message before then can be in the described system message modification cycle using described renewal with described base station.
Compared with prior art, base station side just begins to upgrade the system message that comprises physical layer parameter simultaneously among the present invention in the paging of transmitting system message modification, has realized base station and terminal synchronizes use parameters in updated system messages.
Description of drawings
Fig. 1 is a system message update schematic diagram of the prior art;
Fig. 2 is a system message update schematic diagram proposed by the invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
When the present invention proposes aloft the interface system information updating, base station side is in the paging of transmitting system message modification, just begin to upgrade the system message that comprises physical layer parameter simultaneously, mainly be meant MIB, SIB1 and SIB2, but do not upgrade the value tag among the SIB1, because the base station just begins to adopt new physical layer parameter at first in next system message update cycle.End side is when receiving that system message is revised system message modification paging, revise the cycle read system message in current system message, but do not come into force at once, up to the next system message update cycle at first, just use the parameter in the new system message.Because like this base station side and end side be to the parameter in the new system message, all be that to revise the initial moment in cycle in next system message effective, so can guarantee in base station side and the end side system message parameter update synchronously.
First embodiment upgrades by Physical Random Access Channel (PRACH) parameter
As shown in Figure 2, when system message is revised cycle n, the PRACH parameter update, the base station need be revised system message and be notified the terminal modifications physical layer parameter, then all terminals are initiated system messages and are revised pagings in system message is revised among the cycle n+1 the sub-district, and revise the PRACH parameter of revising among the cycle n+1 among the SIB2, but do not revise the value tag among the SIB1 in system message.
After terminal is received the system message modification paging of base station side at system message modification cycle n+1, read new system message immediately, can find that modification has taken place the PRACH parameter among the SIB2 this moment.
When system message was revised cycle n+2, the value tag among the SIB1 was revised in the base station, and brought into use new PRACH parameter together with terminal, if this moment, terminal had access at random, then used new PRACH parameter.Need to prove if in system message is revised cycle n+1, have terminal to need to insert at random, then base station and terminal are still used original PRACH parameter configuration.
Second embodiment upgrades by the PUCCH parameter
As shown in Figure 2, when system message is revised cycle n, the PUCCH parameter update, the base station need be revised system message and be notified the terminal modifications physical layer parameter, then all terminals are initiated system messages and are revised pagings in system message is revised among the cycle n+1 the sub-district, and revise the PUCCH parameter of revising among the cycle n+1 among the SIB2, but do not revise the value tag among the SIB1 in system message.
After terminal is received the system message modification paging of base station side at system message modification cycle n+1, read new system message immediately, can find that modification has taken place the PUCCH parameter among the SIB2 this moment.
When system message was revised cycle n+2, the value tag among the SIB1 was revised in the base station, and brings into use new PUCCH parameter, and the terminal under the connection status is the PUCCH parameter after renewal is brought into use on system message modification cycle n+2 border also.Need to prove that if when system message is revised cycle n+1, the terminal under base station and the connection status is still used original PUCCH parameter configuration.
The 3rd embodiment physical layer parameter is upgraded, and terminal comes back to the overlay area
As shown in Figure 2, when system message is revised cycle n, physical layer parameter is upgraded, the base station need be revised system message and be notified the terminal modifications physical layer parameter, then all terminals are initiated system messages and are revised pagings in system message is revised among the cycle n+1 the sub-district, and revise the physical layer parameter of revising among the cycle n+1 in the system message, but do not revise the value tag among the SIB1 in system message; When system message is revised cycle n+2, revise the value tag among the SIB1, continue the physical layer parameter after broadcasting is upgraded, and bring into use the physical layer parameter after the renewal.
System message can just be revised in the base station when having only physical layer parameter vicissitudinous.In addition, the base station can be revised in system message increases an indication information in the paging, represent that by this indication information variation has taken place physical layer parameter, allow the terminal that receives system message modification paging revise the cycle system message that reads renewal in (being that system message is revised cycle n+1) immediately in current system message.
If terminal is revised among the cycle n+1 in system message and is come back to the overlay area, read SIB1 again, do not change if find the value tag among the SIB1, terminal is still revised in system message and is used original physical layer parameter of preserving among the cycle n+1 so.If terminal is revised cycle n+1 in system message and is received system message modification system message modification paging, then read other system message, find that physical layer parameter has renewal in the other system message, terminal is used the physical layer parameter in the updated system messages immediately when system message is revised cycle n+2 so.
If terminal is revised among the cycle n+2 in system message and is come back to the overlay area, again read SIB1, if finding the value tag among the SIB1 changes, continue to read other system message so, find that physical layer parameter has renewal, then use physical layer parameter in the updated system messages that reads immediately.
Though the disclosed execution mode of the present invention as above, the execution mode that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and on the details; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.
Claims (10)
1, a kind of system message updating method, the base station is revised the page notification terminal by system message and is read new system message, it is characterized in that, to described terminal broadcasting updated system messages, the described system message modification cycle is that the base station sends the cycle that described system message is revised paging in the system message modification cycle in described base station.
2, the method for claim 1 is characterized in that:
The next system message modification cycle that the cycle is revised in described system message in described base station is used described parameters in updated system messages.
3, method as claimed in claim 2 is characterized in that:
The label value of described base station in first system information block of described next system message modification cycle update system message.
4, the method for claim 1 is characterized in that:
Described updated system messages by physical accidental access channel parameter in second system information block of the physical layer parameter in the modification system message, system message or the Physical Uplink Control Channel parameter in described second system information block, is broadcasted to described terminal in described base station in the described system message modification cycle.
5, method as claimed in claim 4 is characterized in that:
Described base station is by revising described physical layer parameter when described terminal is broadcasted described updated system messages, revise in described system message described base station increases the indication information that a described physical layer parameter of sign changes in the paging, described terminal reads described updated system messages in the described system message modification cycle.
6, method as claimed in claim 4 is characterized in that:
Described base station is by revising described physical accidental access channel parameter or Physical Uplink Control Channel parameter when described terminal is broadcasted described updated system messages, and described base station and terminal are used the system message before the described renewal in the described system message modification cycle.
7, a kind of system message updating method, terminal is come the triggering system information updating by the paging of receiving system message modification, it is characterized in that, described terminal is revised the cycle in the system message of receiving updated system messages, read described updated system messages, the described system message modification cycle is that the base station sends the cycle that described system message is revised paging.
8, method as claimed in claim 7 is characterized in that:
Described terminal is used described parameters in updated system messages in the next system message modification cycle in described system message modification cycle.
9, method as claimed in claim 7 is characterized in that:
Described terminal is learned described updated system messages by the Physical Uplink Control Channel parameter in the physical accidental access channel parameter in second system information block of the physical layer parameter in the described updated system messages, system message or described second system information block.
10, method as claimed in claim 9 is characterized in that:
For the terminal that comes back to the overlay area, described terminal reads described updated system messages according to the indication information that the sign physical layer parameter of carrying in the described system message modification paging changes in the described system message modification cycle; Or
For the terminal that inserts at random, learn described updated system messages by described physical accidental access channel parameter, the system message before then in the described system message modification cycle, using described renewal with described base station; Or
For the terminal under the connection status, learn described updated system messages by described Physical Uplink Control Channel parameter, the system message before then in the described system message modification cycle, using described renewal with described base station.
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| CN2008101308014A CN101651891B (en) | 2008-08-13 | 2008-08-13 | System message updating method |
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| CN2008101308014A CN101651891B (en) | 2008-08-13 | 2008-08-13 | System message updating method |
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| CN101651891B CN101651891B (en) | 2012-05-09 |
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