CN102215567B - A kind of method and system realizing system message update - Google Patents
A kind of method and system realizing system message update Download PDFInfo
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Abstract
The invention discloses a kind of method realizing system message update, the method comprises: subscriber equipment (UE) adopts synchronous active mode or Asynchronous activation mode to activate the system message of renewal, realizes UE and synchronization among base stations or asynchronous system message update; Wherein, when adopting synchronous active mode, after UE receives the dedicated signaling of base station transmission, activationary time brings into use the system message configuration of carrying in dedicated signaling by the time; When adopting Asynchronous activation mode, UE mono-receives the dedicated signaling that base station sends, and uses the system message configuration of carrying in dedicated signaling immediately.The invention also discloses a kind of system realizing system message update, this system comprises updating block, adopts synchronous active mode or Asynchronous activation mode to activate the system message of renewal for UE, realizes UE and synchronization among base stations or asynchronous system message update.Adopt method and system of the present invention, UE can realize and synchronization among base stations or asynchronous system message update.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method and system for synchronously or asynchronously updating system messages between a User Equipment (UE) and a base station in a multi-carrier system.
Background
In an advanced long term evolution-advanced (LTE-a) phase, the UE in the LTE-a is in an idle state, and only needs to be selected to reside on one carrier, so that only the system message of the resident carrier needs to be read, and the behavior of the UE in the idle state in system message acquisition and system message update is the same as that in the LTE phase. For the UE in LTE-a in a connected state, in order to increase the transmission rate of uplink and downlink, the uplink and downlink of the UE may be configured to use multiple Component Carriers (CCs) through a carrier addition process. In the carrier increasing process, the base station informs the UE of increasing the necessary system information on the carrier through special signaling.
Since the UE may use a plurality of component carriers simultaneously in the connected state, one component is selected as a Primary Component Carrier (PCC) and the other component carriers are selected as Secondary Component Carriers (SCC) in the plurality of component carriers. Because the UE aggregates multiple carriers simultaneously and multiple downlink carriers all have system message broadcast, when the system message on each component carrier is updated, the LTE-a UE needs to acquire the updated system message on the carrier in time.
The process of system message update in LTE is shown in figure 1. The system message is generally modified only in a specific radio frame, and a time period in which the system message is not modified is referred to as a system message modification period. When the base station needs to update the system message, the UE is first notified that the system message will change in the next system message modification period, and then the updated system message is sent in the next system message modification period. In fig. 1, the base station sends a paging message at a system message modification period n to notify the UE that the system message is to be updated at a period n + 1. In the system message modification period n +1, the base station broadcasts an updated system message.
Because the UE of LTE-a jointly uses multiple carriers, its behavior of acquiring system message updates on each carrier is different from that of the UE of LTE. For the updating processing of the system message on the PCC, the behavior of the LTE-A UE in the connection state for acquiring the updated system message is the same as that of the LTE system; and if the system message on the SCC is updated, the base station notifies the UE of the relevant system information through dedicated signaling.
Because the base station needs to send the dedicated signaling to the UEs one by one, the time when each UE receives the dedicated signaling is prior, and the base station side can send the dedicated signaling after updating the system message, or update the system message after sending the dedicated signaling, a new requirement arises, that is: the UE needs to know when the system message on the base station side is updated, so that the UE side can update the system message when receiving the dedicated signaling. There is currently no solution to this need.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for implementing system message update, wherein when a system message at a base station side is updated, a UE can implement synchronous or asynchronous system message update with the base station.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of implementing system message updates, the method comprising: user Equipment (UE) activates the updated system message in a synchronous activation mode or an asynchronous activation mode to realize the synchronous or asynchronous system message update between the UE and a base station; wherein,
when the synchronous activation mode is adopted, after receiving a special signaling sent by a base station, the UE starts to use the system message configuration carried in the special signaling until the activation time; or,
when the asynchronous activation mode is adopted, the UE immediately uses the system message configuration carried in the special signaling after receiving the special signaling sent by the base station; or,
UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; or,
and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
When the synchronous activation mode is adopted, the activation time specifically includes: the system message update specified in the dedicated signaling takes effect in a System Frame Number (SFN), or a time obtained by the UE through calculation according to a system message modification period of a Primary Component Carrier (PCC), or a time obtained by the UE through calculation according to a system message modification period of a Secondary Component Carrier (SCC) specified in the dedicated signaling.
When the synchronization activation mode is adopted, the length of a Discontinuous Reception (DRX) cycle of the UE needs to be less than or equal to the length of an SCC system message modification cycle.
Wherein, when the asynchronous activation mode is adopted and the base station sends the dedicated signaling, the method further comprises: the dedicated signaling is transmitted before the system message broadcasted by the base station side is updated or after the system message broadcasted by the base station side is updated.
Wherein, the method also comprises: if the network system message is updated at the time when the base station sends the special signaling to the UE, the base station indicates the UE to adopt the asynchronous activation mode to realize the system message update in the sent special signaling; otherwise, the base station indicates the UE to adopt the synchronous activation mode to realize system message updating in the special signaling sent by the base station, and indicates the effective time of the system message updating.
When the UE selects to adopt the synchronous activation mode according to the indication of the base station, the method further comprises the following steps: in the dedicated signaling, when a system message update occurs on one component carrier, an SFN indicating that the system message update is in effect, or a system message indicating which system message modification period is later than the updated system message modification period is in effect, or a system message indicating how many system message modification periods are later than the updated system message modification period is in effect;
or, in the case that a plurality of component carriers have system message updates at the same time, in the dedicated signaling, the dedicated signaling indicates in which system message modification period the system message updates of each component carrier take effect, or after how many system message modification periods the system message updates of each component carrier take effect.
Wherein, when there is a system message update occurring in multiple component carriers at the same time, the method further includes: and indicating all the component carriers by adopting one piece of special signaling or adopting a plurality of pieces of special signaling, wherein each piece of special signaling respectively indicates one component carrier correspondingly.
Wherein, when comparing, the method further comprises:
UE receives a special signaling carrying a system message updating indication and acquires the updating time of a network system message; the UE receives a special signaling carrying updated system message content and acquires the receiving time of the signaling; and comparing the receiving time of the signaling with the updating time of the network system message, and selecting to adopt the synchronous activation mode or the asynchronous activation mode.
Wherein, when performing the comparison, the method further comprises: if the receiving time of the signaling is earlier than the updating time of the network system message, selecting to adopt the synchronous activation mode to realize the synchronous system message updating between the UE and the base station; otherwise, the asynchronous activation mode is selected to realize asynchronous system message updating between the UE and the base station.
A system for realizing system message updating comprises an updating unit, a processing unit and a processing unit, wherein the updating unit is used for activating updated system messages by UE in a synchronous activation mode or an asynchronous activation mode and realizing synchronous or asynchronous system message updating between the UE and a base station; wherein,
when the synchronous activation mode is adopted, after receiving a special signaling sent by a base station, the UE starts to use the system message configuration carried in the special signaling until the activation time; or,
when the asynchronous activation mode is adopted, the UE immediately uses the system message configuration carried in the special signaling after receiving the special signaling sent by the base station; or,
UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; or,
and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
The system also comprises a selection unit, which is used for indicating the UE to adopt the asynchronous activation mode to realize system message update in the special signaling sent by the base station when the network system message is updated at the moment when the base station sends the special signaling to the UE; when the network system message is not updated at the time when the base station sends the special signaling to the UE, the base station indicates the UE to adopt the synchronous activation mode to realize the system message update in the sent special signaling, and indicates the effective time of the system message update.
The system further comprises an indication unit, configured to indicate, in the dedicated signaling, an SFN in which a system message update is valid, or indicate a system message updated after which system message modification period is valid, or indicate how many system message modification periods are followed by the updated system message to be valid, when the UE selects to use a synchronization activation mode according to an indication of the base station and a component carrier is updated with the system message;
or, in the case that a plurality of component carriers have system message updates at the same time, in the dedicated signaling, the dedicated signaling indicates in which system message modification period the system message updates of each component carrier take effect, or after how many system message modification periods the system message updates of each component carrier take effect.
The indication unit is further configured to indicate all component carriers by using one dedicated signaling or indicate one component carrier by using multiple dedicated signaling, where each dedicated signaling indicates one component carrier correspondingly, when the system message update occurs to multiple component carriers simultaneously.
The system also comprises a comparing and selecting unit, which is used for the UE to receive the special signaling carrying the system message updating indication and to obtain the updating time of the network system message; the UE receives a special signaling carrying updated system message content and acquires the receiving time of the signaling; comparing the receiving time of the signaling with the updating time of the network system message, and selecting to adopt the synchronous activation mode if the receiving time of the signaling is earlier than the updating time of the network system message; otherwise, the asynchronous activation mode is selected.
The UE of the invention adopts a synchronous activation mode or an asynchronous activation mode to activate the updated system message, thereby realizing the synchronous or asynchronous system message update between the UE and the base station; when a synchronous activation mode is adopted, after receiving a special signaling sent by a base station, UE starts to use system message configuration carried in the special signaling until activation time; when an asynchronous activation mode is adopted, the UE immediately uses system message configuration carried in a special signaling after receiving the special signaling sent by the base station; UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
By adopting the invention, no matter the system message which is updated is activated by adopting a synchronous activation mode or an asynchronous activation mode, the system message at the base station side can be definitely updated, so that the UE can be updated along with the updating of the base station.
Drawings
Fig. 1 is a schematic diagram illustrating system message update of an LTE system in the prior art;
FIG. 2 is a timing diagram illustrating the process of the synchronous activation of the present invention;
FIG. 3 is a flowchart illustrating a process for synchronization activation according to the present invention;
FIG. 4 is a timing diagram illustrating the processing of the synchronization activation method under paging optimization in accordance with the present invention;
FIG. 5 is a flowchart illustrating a process for synchronization activation under paging optimization in accordance with the present invention;
FIG. 6 is a timing diagram illustrating the processing of the asynchronous activation mode when the UE lags behind the base station in accordance with the present invention;
FIG. 7 is a flowchart illustrating the process of the asynchronous activation mode when the UE lags behind the base station according to the present invention;
FIG. 8 is a timing diagram illustrating the processing of the asynchronous activation mode when the UE is ahead of the base station according to the present invention;
FIG. 9 is a flowchart illustrating the process of the asynchronous activation mode when the UE moves ahead of the base station according to the present invention;
FIG. 10 is a timing diagram illustrating the process of optimizing asynchronous activation when the UE lags behind the base station in accordance with the present invention;
FIG. 11 is a flowchart illustrating the process of optimizing asynchronous activation when the UE lags behind the base station in accordance with the present invention;
FIG. 12 is a timing diagram illustrating the process of optimizing the asynchronous activation mode before the UE moves to the base station according to the present invention;
FIG. 13 is a flowchart illustrating the process of optimizing the asynchronous activation mode before the UE moves to the base station according to the present invention;
FIG. 14 is a timing diagram illustrating the process of indicating whether synchronous or asynchronous activation is performed by base station specific signaling in accordance with the present invention;
FIG. 15 is a flow chart illustrating the process of indicating the synchronous or asynchronous activation mode by the base station specific signaling in accordance with the present invention;
FIG. 16 is a flow chart of the process of indicating the synchronous or asynchronous activation mode by the dedicated signaling of the base station under the condition of simultaneous multi-carrier update according to the present invention;
FIG. 17 is a timing diagram illustrating a process of selecting a synchronous activation or asynchronous activation mode by the UE according to dedicated signaling;
FIG. 18 is a flowchart illustrating a process of selecting a synchronous activation or asynchronous activation mode by a UE according to dedicated signaling.
Detailed Description
The basic idea of the invention is: the UE activates the updated system message in a synchronous activation mode or an asynchronous activation mode to realize the synchronous or asynchronous system message update between the UE and the base station; when a synchronous activation mode is adopted, after receiving a special signaling sent by a base station, UE starts to use system message configuration carried in the special signaling until activation time; when an asynchronous activation mode is adopted, the UE immediately uses system message configuration carried in a special signaling after receiving the special signaling sent by the base station; UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
The following describes the embodiments in further detail with reference to the accompanying drawings.
The updating scheme of the invention is a scheme for activating the updated system message by adopting a synchronous or asynchronous activation mode after the UE receives the special signaling sent by the base station side, thereby realizing the synchronous or asynchronous system message updating between the UE and the base station. When the updated system message is activated in a synchronous activation mode, the UE starts to use the system message configuration in the received special signaling at a specific time, namely the activation time; when the updated system message is activated in an asynchronous activation mode, the UE immediately uses the system message configuration in the dedicated signaling as soon as the dedicated signaling is received. That is, no matter the system message for updating is activated in a synchronous activation manner or an asynchronous activation manner, it can be determined when the system message on the base station side is updated, so that the UE is updated along with the updating of the base station, and the consistency of the updating between the UE and the base station is ensured.
A method for realizing system message update mainly comprises the following contents:
scheme 1: synchronous activation mode
The UE uses the scheme, and after receiving the special signaling, the UE starts to use the system message configuration carried in the special signaling until the activation time. In this way, the UE can implement system message update synchronized with the base station.
The activation time may be a System Frame Number (SFN) in which the system message indicated in the dedicated signaling is valid, or calculated and obtained by the UE according to a system message modification period of the PCC or calculated and obtained according to a system message modification period of the SCC indicated in the dedicated signaling.
By using the scheme, the UE is required to have the opportunity of receiving the dedicated signaling in one system message modification period, and for this reason, the length of a Discontinuous Reception (DRX) period of the UE needs to be less than or equal to the length of the system message modification period.
As an optimization of the scheme, the base station notifies the UE that the system message will be updated through the paging message, and the UE uses the updated system message configuration only in the next system message modification period after receiving the paging message.
Scheme 2: asynchronous activation mode
The UE uses the scheme, and immediately uses the system message configuration carried in the special signaling after receiving the special signaling.
In this scheme, the dedicated signaling may be sent before the system message broadcasted by the base station side is modified, or after the system message broadcasted by the base station side is modified.
Due to the scheme, the system message updating of the base station side and the UE side is asynchronous, and the base station side is earlier than the UE side, so the UE cannot be scheduled on the carriers in the time difference of the asynchronous updating of the base station side and the UE side.
As an optimization of the scheme, before sending dedicated signaling to the UE, the base station notifies the UE of the update of the system message through a paging message, so that the UE knows that the scheduling is not performed on the carrier within the time difference.
The scheme 3 is further optimized for the above synchronous activation mode or asynchronous activation mode, that is: the base station adopts the special signaling indication to adopt a synchronous activation mode or an asynchronous activation mode.
After receiving the dedicated signaling, the UE determines which system message modification period the system message takes effect in according to the identifier carried in the dedicated signaling.
For single carrier, in this scheme, the dedicated signaling indicates SFN in which the system message is valid, or indicates a system message modification period and how many system message modification periods later the updated system message is valid.
For multiple carriers, in the present solution, if system message updates occur to multiple component carriers at the same time, the dedicated signaling indicates in which system message period the system message of each component carrier takes effect, or after how many system message modification periods the system message of each component carrier takes effect.
According to the scheme, if the network system message is updated at the moment when the base station sends the special signaling to the UE, the UE is indicated to adopt asynchronous system message updating in the special signaling; otherwise, the base station indicates the UE to adopt the synchronized system message update in the dedicated signaling, and indicates the effective time of the system message update, which may also be referred to as the activation time of the system message update.
The scheme 4 is further optimized for the above synchronous activation mode or asynchronous activation mode, that is: and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison of different special signaling.
UE receives a special signaling carrying a system message updating indication, and acquires the updating time of the network system message from the special signaling; then receiving the special signaling carrying the updated system message content, and the UE determines whether to adopt a synchronous activation mode or an asynchronous activation mode according to the comparison between two different special signaling received successively, namely: and comparing the time of receiving the special signaling carrying the updated system message content with the updating time of the network system message in the special signaling carrying the system message updating indication to determine whether a synchronous activation mode or an asynchronous activation mode is adopted to activate the updated system message, thereby realizing synchronous updating or asynchronous updating.
According to the scheme, the UE acquires the time for updating the network system message according to the first special signaling, namely the special signaling carrying the system message updating indication, and then acquires the updated system message according to the second special signaling, namely the special signaling carrying the updated system message content. If the time for UE to obtain the second special signaling is earlier than the time indicated in the first special signaling, synchronous updating of the system message can be realized, otherwise, only asynchronous updating of the system message can be realized.
In the scheme, the content of the second dedicated signaling is considered to be more, and if the two messages are combined, under the condition that a plurality of UEs are involved, the scheduling in one system message modification period cannot be guaranteed. According to the scheme, the first message can be scheduled in one system message modification period all the time, so that all the UE can know that the system message is about to be modified before the system message is updated, and the UE can be prevented from being scheduled on the carrier wave of the system message.
Here, it should be noted that: in the invention, all the UEs can adopt a synchronous activation mode; or all the UEs adopt an asynchronous activation mode; it may also be that part of the UEs use a synchronous activation mode, and part of the UEs use an asynchronous activation mode, that is, a mode in which the synchronous activation mode and the asynchronous activation mode are used in a mixed manner, as described in the above scheme 3.
The invention is illustrated below.
Example 1: synchronous activation mode
Taking UE as UE1 as an example, UE1 downlink aggregates 2 component carriers (CC0 and CC1, where CC0 is downlink PCC of UE1, and CC1 is downlink SCC of UE 1), uplink also aggregates 2 component carriers as an example, a system message on CC1 is updated in a system message modification period n +1, and fig. 2 is a processing timing diagram of the base station and UE1 in this embodiment. Fig. 3 illustrates a process of updating CC1 system messages, and the base station and the UE1 perform system message update synchronously in this embodiment, which includes the following steps:
step 300: the base station determines that the system message on CC1 will be updated at system message modification period n + 1.
Step 301-302: the base station sends a system message update paging message on the CC1, and simultaneously sends dedicated signaling to the UE1 aggregating this carrier as the SCC, informing the UE1 of the updated system message.
Here, it should be noted that: the paging message and the special signaling are sent in the same time period, and are not in sequence in time.
Step 303: the UE1 obtains the updated system message and determines an updated system message activation time based on the received dedicated signaling.
Step 304: the UE1 realizes the synchronization of the system message update by the UE1 and the base station synchronously using the updated system information configuration according to the activation time in the system message modification period n + 1.
With the present embodiment, the UE1 is required to have an opportunity to receive dedicated signaling within one system message modification period, for which the DRX cycle length of the UE1 is less than or equal to the system message modification period length.
The UE1 determines the updated system message activation time in several possible ways:
mode 1: the system message modification periods of all carriers aggregated by the UE1 are the same, and the UE1 determines the system message modification frame boundary of the PCC according to the system message modification period of the PCC, because the system message modification boundary of the SCC is the same as the system message modification frame boundary of the PCC, the UE1 may determine the SCC system message activation time carried in the dedicated signaling according to the system message modification period of the PCC broadcast on the PCC.
Mode 2: the dedicated signaling carrying the SCC system message indicates the SFN with the updated system information activation. The UE1 begins using the updated system information configuration at this SFN.
Mode 3: the dedicated signaling carrying the SCC system message indicates a system message modification period of the SCC, and the UE1 calculates at which SFN the UE1 starts to use the updated system information configuration according to the system message modification period of the SCC.
Example 2: synchronous activation mode under paging optimization condition
Taking UE as UE1 as an example, UE1 downlink aggregates 2 component carriers (CC0 and CC1, where CC0 is downlink PCC of UE1, and CC1 is downlink SCC of UE 1), uplink also aggregates 2 component carriers as an example, a system message on CC1 is updated in a system message modification period n +1, and fig. 4 is a processing timing diagram of the base station and UE1 in this embodiment. Fig. 5 illustrates a process of updating CC1 system messages, and the base station and the UE1 perform system message update synchronously in this embodiment, which includes the following steps:
step 500: the base station determines that the system message on CC1 will be updated at system message modification period n + 1.
Step 501: the base station sends dedicated signaling to the UE1 aggregating this carrier as the SCC, informing the UE1 of the updated system message.
Step 502: the UE1 obtains the updated system message according to the received dedicated signaling.
Step 503: at system message modification period n, the base station sends a system message update page message on CC 1.
Step 504: at the same time, the base station sends a system message update page message on CC 0.
Step 505: the UE1 receives the system message update paging message on the system message modification period n component carrier CC0, and determines that the system message will be updated in the next system message modification period, i.e., period n + 1.
Step 506: and the UE1 synchronously uses the updated system information configuration with the base station by the UE1 in the system information modification period n +1 according to the indication of the paging message, so as to realize the synchronous system information update.
In this embodiment, the UE1 may receive the paging message on the CC0 before or after the UE1 may receive system message update dedicated signaling. Whether before or after, the UE1 waits until the system information updated using dedicated signaling is deactivated according to the next system message modification period in which the paging message is received.
The difference between the present embodiment and the paging in embodiment 1 is that in the system message modification period n, since the system message update of CC1 and UE1 only listens to the system message update paging message on CC0, the base station needs to send the system message update paging message also on CC 0. And this paging message may be further optimized to indicate which component carrier the system message update occurred in the paging message.
Example 3: asynchronous activation mode in case that UE lags behind base station
Taking UE as UE1 as an example, UE1 downlink aggregates 2 component carriers (CC0 and CC1, where CC0 is downlink PCC of UE1, and CC1 is downlink SCC of UE 1), uplink also aggregates 2 component carriers as an example, a system message on CC1 is updated in a system message modification period n +1, and fig. 6 is a processing timing diagram of the base station and UE1 in this embodiment. Fig. 7 illustrates a processing procedure for asynchronously performing system message update by the base station and the UE1 in this embodiment when there is a component carrier system message update, which includes the following steps:
step 700: the base station determines that the system message on CC1 will be updated at system message modification period n + 1.
Step 701: the base station sends a system message update page message on CC 1.
Step 702: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Step 703-704: since the CC1 is a downlink SCC of the UE1, the base station sends a dedicated signaling to the UE1 in the system message modification period n +1 to notify the UE1 of the updated system message, and the UE1 sends a dedicated signaling for system message update response to the base station.
Step 705: the UE1 uses the system information configuration carried in the dedicated signaling immediately after receiving the dedicated signaling.
Example 4: asynchronous activation mode of UE in advance of base station
Taking UE as UE1 as an example, UE1 downlink aggregates 2 component carriers (CC0 and CC1, where CC0 is downlink PCC of UE1, and CC1 is downlink SCC of UE 1), uplink also aggregates 2 component carriers as an example, a system message on CC1 is updated in a system message modification period n +1, and fig. 8 is a processing timing diagram of the base station and UE1 in this embodiment. Fig. 9 illustrates a processing procedure for asynchronously performing system message update by the base station and the UE1 in this embodiment when there is a component carrier system message update, which includes the following steps:
step 900: the base station determines that the system message on CC1 will be updated at system message modification period n + 1.
Step 901: the base station sends a system message update page message on CC 1.
Step 902-903: since the CC1 is a downlink SCC of the UE1, the base station sends a dedicated signaling to the UE1 in the system message modification period n +1 to notify the UE1 of the updated system message, and the UE1 sends a dedicated signaling for system message update response to the base station.
Step 904: the UE1 uses the system information configuration carried in the dedicated signaling immediately after receiving the dedicated signaling.
Step 905: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Example 5: the configuration of the optimized asynchronous activation mode is optimized for the above embodiment 3
Taking UE as UE1 as an example, UE1 downlink aggregates 2 component carriers (CC0 and CC1, where CC0 is downlink PCC of UE1, and CC1 is downlink SCC of UE 1), uplink also aggregates 2 component carriers (CC2 and CC3, CC2 and CC0 are a pair of uplink and downlink carriers, and CC3 and CC1 are a pair of uplink and downlink carriers), a system message on CC1 is updated in a system message modification period n +1, and fig. 10 is a processing timing diagram of the base station and UE1 in this embodiment. Fig. 11 illustrates a processing procedure for asynchronously performing system message update by the base station and the UE1 in this embodiment when there is a component carrier system message update, which includes the following steps:
step 1100: the base station determines that the system message on CC1 will be updated at system message modification period n + 1.
Step 1101: the base station sends a system message update page message on CC 1.
Step 1102: and a system message update page message is also sent on CC0 indicating that the system message on CC1 is to be updated at the next system message modification period.
Step 1103: the UE1 receives a paging message of system message update on CC0, the paging message indicates that the system message of CC1 is to be updated in system message modification period n +1, and the UE1 does not schedule on CC1 and CC3 in system message modification period n + 1.
Step 1104: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Step 1105-1106: since the CC1 is a downlink SCC of the UE1, the base station sends a dedicated signaling to the UE1 in the system message modification period n +1 to notify the UE1 of the updated system message, and the UE1 sends a dedicated signaling for system message update response to the base station.
Step 1107: the UE1 uses the system information configuration carried in the dedicated signaling immediately after receiving the dedicated signaling, and can perform scheduling on CC1 and CC 3.
The difference between this embodiment and embodiment 3 is that in the system message modification period n, because the system message of CC1 is updated and UE1 only listens to the system message update paging message on CC0, the base station needs to send the system message update paging message also on CC 0. And this paging message may be further optimized to indicate which component carrier the system message update occurred in the paging message.
In this embodiment, as shown in fig. 10, since the UE1 knows the time period when the system message is not synchronized with the base station, the UE1 may not schedule on the component carrier where the system message update occurs during this time period.
Example 6: configuration of optimized asynchronous activation mode, aiming at optimization of the above embodiment 4
Taking UE as UE1 as an example, UE1 downlink aggregates 2 component carriers (CC0 and CC1, where CC0 is downlink PCC of UE1, and CC1 is downlink SCC of UE 1), uplink also aggregates 2 component carriers (CC2 and CC3, CC2 and CC0 are a pair of uplink and downlink carriers, and CC3 and CC1 are a pair of uplink and downlink carriers), a system message on CC1 is updated in a system message modification period n +1, and fig. 12 is a processing timing diagram of the base station and UE1 in this embodiment. Fig. 13 illustrates a processing procedure for asynchronously performing system message update by the base station and the UE1 in this embodiment when there is a component carrier system message update, which includes the following steps:
step 1300: the base station determines that the system message on CC1 will be updated at system message modification period n + 1.
Step 1301: the base station sends a system message update page message on CC 1.
Step 1302: and a system message update page message is also sent on CC0 indicating that the system message on CC1 is to be updated at the next system message modification period.
Step 1303: the UE1 receives a paging message for system message update on CC0, which indicates that the system message of CC1 is to be updated in the system message modification period n + 1.
Step 1304 to 1305: since the CC1 is a downlink SCC of the UE1, the base station sends a dedicated signaling to the UE1 in the system message modification period n to notify the UE1 of the updated system message, and the UE1 sends a dedicated signaling for system message update response to the base station.
Step 1306: the UE1 uses the system information configuration carried in the dedicated signaling immediately after receiving the dedicated signaling, and because the UE1 knows that the base station side uses the updated system information for configuration only in the system message modification period n +1, it does not perform scheduling on the CC1 and the CC 3.
Step 1307: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Step 1308: at system message modification period n +1, the UE1 may be scheduled on CC1 and CC 3.
The present embodiment is different from embodiment 4 in that in the system message modification period n, since the system message update of CC1 and UE1 only listens to the system message update paging message on CC0, the base station needs to send the system message update paging message also at CC 0. And this paging message may be further optimized to indicate which component carrier the system message update occurred in the paging message.
In this embodiment, as shown in fig. 12, since the UE1 knows the time period when the system message is not synchronized with the base station, the UE1 may not schedule on the component carrier where the system message update occurs during this time period.
The difference between this embodiment and embodiment 2 is that, in embodiment 2, after receiving the dedicated signaling, the UE1 does not immediately use the updated system information in the dedicated signaling for configuration, but waits for the next system message modification period after receiving the paging message to use the updated system information for configuration, so that during this time, the configuration between the UE1 and the base station is still synchronous, and the scheduling of the UE1 on the carrier is not affected. However, in this embodiment, since the UE1 is configured with the updated system information immediately, the UE1 is not synchronized with the base station until the base station also uses the updated system information for configuration, so the UE1 cannot perform scheduling on the carriers.
Example 7: base station specific signaling indicates synchronous activation or asynchronous activation mode, aiming at single carrier system message update
Taking UE as UE1/UE2/UE3 as an example, UE1/UE2/UE3 all aggregate 2 component carriers in downlink (CC0 and CC1, CC1 is SCC of these 3 UEs), and also aggregate 2 component carriers in uplink, and the system message on CC1 is updated in the system message modification period n +1, fig. 14 is a processing timing diagram of the base station and UE1/UE2/UE3 in this embodiment. Fig. 15 illustrates a processing procedure of asynchronously performing system message update on a base station and a UE1/UE2/UE3 according to this embodiment when there is a component carrier system message update, which includes the following steps:
step 1500: in the system message modification period n-1, the base station will update in the system message modification period n +1 according to the CC system message, the base station has not yet notified the UE1CC1 that the system message will be updated, and the UE1 has a scheduling opportunity in this system message modification period, the base station sends a dedicated signaling to the UE1 to notify the UE1 of the updated system message, and the message indicates that the system message in the system message CC1 will be updated in 2 system message modification periods, that is, in the system message modification period n + 1.
Step 1501: at system message modification period n, the base station sends a system message update page message on CC 1.
Step 1502: in the system message modification period n, the base station will update in the system message modification period n +1 according to the CC system message, the base station has not yet notified the UE2CC1 that the system message will be updated, and the UE2 has a scheduling opportunity in this system message modification period, the base station sends a dedicated signaling to the UE2 to notify the UE2 of the updated system message, and the message indicates that the system message in the system message CC1 will be updated in 1 system message modification period, that is, in the system message modification period n + 1.
Step 1503: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Step 1504: the UE1 and the UE2 use the system information configuration carried in the dedicated signaling at the period n +1 according to the received dedicated signaling. And realizing synchronous system message updating.
Step 1505: in the system message modification period n +1, the base station updates in the system message modification period n +1 according to the component carrier system message, the base station does not notify the UE3CC1 of the update of the system message, and the UE3 has a scheduling opportunity in the system message modification period, the base station sends a dedicated signaling to the UE3 to notify the UE3 of the updated system message, and the message indicates that the system message on the system message CC1 will be updated.
Step 1506: the UE3 uses the system information configuration carried in the dedicated signaling immediately after the dedicated signaling is received in the period n + 1. And realizing asynchronous system message updating.
In this embodiment, the dedicated signaling indicates the system message modification period of the CC1 and how many system message modification periods later the updated system message takes effect. 0 means immediate effect, 1 means effect after the next system message modification period, and so on.
Example 8: base station specific signaling indicates synchronous or asynchronous activation mode, and updates multi-carrier system messages simultaneously
Taking UE as UE1 as an example, UE1 aggregates 3 component carriers in downlink (CC0/CC1/CC2, CC1/CC2 is SCC of UE), also aggregates 3 component carriers in uplink, and updates system messages on CC1/CC2 at the same time in a system message modification period n +1, where fig. 16 illustrates a processing procedure of performing system message update synchronously or asynchronously with the base station and UE1 when system messages of component carriers are updated, and the processing procedure includes the following steps:
step 1600: the base station will update in the system message modification period n +1 according to the CC1 system message, the base station has not yet notified UE1CC1 that the system message is to be updated, and UE1 has a scheduling opportunity in this system message modification period, the base station sends a dedicated signaling to UE1 to notify UE1 of the updated system message, and the message indicates that the system message in system message CC1 will be updated in 1 system message modification period, that is, in system message modification period n + 1.
Step 1601: the base station will update in the system message modification period n +1 according to the CC2 system message, the base station has not yet notified the UE1CC2 that the system message is to be updated, and the UE1 has a scheduling opportunity in this system message modification period, the base station sends a dedicated signaling to the UE1 to notify the UE of the updated system message, which indicates that the system message in the system message CC2 will be updated in 1 system message modification period, that is, in the system message modification period n + 1.
Step 1602: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Step 1603: the UE1 uses the CC1/CC2 system information configuration carried in the dedicated signaling at period n +1 according to the indication in the received dedicated signaling. Synchronous or asynchronous system message updates are implemented.
In this embodiment, the base station carries the updated system messages of CC1/CC2 through two dedicated signaling respectively, and indicates the system message modification period of CC1/CC2 and how many system message modification periods the updated system messages take effect (0 indicates immediate effect, 1 indicates effective after the next system message modification period, and so on); or a dedicated signaling is used to carry the updated system messages of CC1/CC2 and indicate the system message modification period of CC1/CC2 and how many system message modification periods later the updated system messages take effect (0 means taking effect immediately, 1 means taking effect after the next system message modification period, and so on).
Example 8: UE selects synchronous activation or asynchronous activation mode according to special signaling
Taking UE as UE1/UE2/UE3 as an example, UE1/UE2/UE3 all aggregate 2 component carriers in downlink (CC0 and CC1, CC1 is SCC of these 3 UEs), and also aggregate 2 component carriers in uplink, and the system message on CC1 is updated in the system message modification period n +1, fig. 17 is a processing timing diagram of the base station and UE1/UE2/UE3 in this embodiment. Fig. 18 illustrates a processing procedure of asynchronously performing system message update on the base station and the UE1/UE2/UE3 in this embodiment when there is component carrier system message update, which includes the following steps:
step 1800: in the system message modification period n-1, the base station is about to update in the system message modification period n +1 according to the component carrier system message, the base station has not yet notified that the system message is about to update on the UE1SCC1, and the UE1 has a scheduling opportunity in this system message modification period, the base station sends a system message update indication dedicated signaling to the UE1, notifying the UE1SCC1 that the system message is about to update in the period n + 1.
Step 1801: at system message modification period n, the base station sends a system message update page message on CC 1.
Step 1802: in the system message modification period n, the base station has not yet notified that the system message will be updated on UE2SCC1, and UE2 has a scheduling opportunity on this system message modification period, the base station sends system message update indication dedicated signaling to UE2, notifying UE2SCC1 that the system message will be updated in period n + 1.
Step 1803: in the system message modification period n, the base station has not yet notified the UE3SCC1 that the system message is about to be updated, and the UE1 has a scheduling opportunity in this system message modification period, the base station sends a system message update indication dedicated signaling to the UE3, notifying the UE3SCC1 that the system message is about to be updated in the period n + 1.
Step 1804: in the system message modification period n, the UE1 has a scheduling opportunity on this system message modification period and the base station has not yet notified the updated system message on the UE1SCC1, and the base station sends the updated system message update dedicated signaling to the UE1 to notify the UE1SCC1 of the updated system message.
Step 1805: and the base station broadcasts the updated system message in the system message modification period n +1 and uses the updated system information for configuration.
Step 1806: the UE1 uses the system information configuration carried in the dedicated signaling at period n +1 according to the received dedicated signaling. And realizing synchronous system message updating.
Step 1807: in the system message modification period n, the UE2 has a scheduling opportunity on this system message modification period and the base station has not yet notified the updated system message on the UE2SCC1, and the base station sends the updated system message update dedicated signaling to the UE2 to notify the UE2SCC1 of the updated system message.
Step 1808: the UE2 uses the system information configuration carried in the dedicated signaling immediately after the dedicated signaling is received in the period n + 1. And realizing asynchronous system message updating.
Step 1809: in the system message modification period n, the UE3 has a scheduling opportunity on this system message modification period and the base station has not yet notified the updated system message on the UE3SCC1, and the base station sends the updated system message update dedicated signaling to the UE3 to notify the UE3SCC1 of the updated system message.
Step 1810: the UE3 uses the system information configuration carried in the dedicated signaling immediately after the dedicated signaling is received in the period n + 1. And realizing asynchronous system message updating.
A system for realizing system message update comprises an update unit, which is used for UE to activate updated system message in a synchronous activation mode or an asynchronous activation mode, and realize synchronous or asynchronous system message update between UE and a base station.
When a synchronous activation mode is adopted, after receiving a special signaling sent by a base station, UE starts to use system message configuration carried in the special signaling until activation time; or,
when an asynchronous activation mode is adopted, the UE immediately uses system message configuration carried in a special signaling after receiving the special signaling sent by the base station; or,
UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; or,
and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
Here, the system further includes a selecting unit, configured to instruct, when the network system message is updated at a time when the base station sends the dedicated signaling to the UE, the UE to implement system message update in an asynchronous activation manner in the sent dedicated signaling; when the network system message is not updated at the time when the base station sends the special signaling to the UE, the base station indicates the UE to adopt a synchronous activation mode to realize the system message update in the sent special signaling, and indicates the effective time of the system message update.
Here, the system further includes an indication unit, configured to, when the UE selects to use the synchronization activation mode according to an indication of the base station, in a case that: in the case of a system message update occurring on one component carrier, in the dedicated signaling, the SFN indicating that the system message update is in effect, or the SFN indicating which system message modification period the updated system message is in effect, or the SFN indicating how many system message modification periods the updated system message is in effect.
Alternatively, the other case is: and when the system message update occurs to a plurality of component carriers, respectively indicating the system message update of each component carrier to take effect in which system message modification period or after which number of system message modification periods.
Here, the indicating unit is further configured to indicate all component carriers by using one dedicated signaling or indicate one component carrier by using multiple dedicated signaling, where each dedicated signaling corresponds to one component carrier, when the system message update occurs to multiple component carriers at the same time.
Here, the system also includes a comparing and selecting unit, which is used for the UE to receive the special signaling carrying the system message updating indication and to obtain the updating time of the network system message; the UE receives a special signaling carrying updated system message content and acquires the receiving time of the signaling; comparing the receiving time of the signaling with the updating time of the network system message, and selecting to adopt a synchronous activation mode if the receiving time of the signaling is earlier than the updating time of the network system message; otherwise, selecting to adopt an asynchronous activation mode.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (13)
1. A method for implementing system message update, the method comprising: user Equipment (UE) activates the updated system message in a synchronous activation mode or an asynchronous activation mode to realize the synchronous or asynchronous system message update between the UE and a base station; wherein,
when the synchronous activation mode is adopted, after receiving a special signaling sent by a base station, the UE starts to use the system message configuration carried in the special signaling until the activation time; the UE receives a system message update paging message from a Primary Component Carrier (PCC), wherein the system message update paging message indicates which component carrier the system message update occurs on; when the synchronous activation mode is adopted, the activation time specifically includes: the system message update specified in the dedicated signaling takes effect in a System Frame Number (SFN), or a time obtained by the UE through calculation according to a system message modification period of a Primary Component Carrier (PCC), or a time obtained by the UE through calculation according to a system message modification period of a Secondary Component Carrier (SCC) specified in the dedicated signaling; or,
when the asynchronous activation mode is adopted, the UE immediately uses the system message configuration carried in the special signaling after receiving the special signaling sent by the base station; the method for acquiring the update time of the system message by the UE comprises the following steps: when the system message is a system message of a Secondary Component Carrier (SCC), the UE updates a paging message according to the system message received from a Primary Component Carrier (PCC) to obtain the updating time of the system message of the Secondary Component Carrier (SCC); or,
UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; the UE determines the system message modification period in which the system message takes effect according to the identification carried in the special signaling; or,
and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
2. The method of claim 1, wherein when the synchronization activation mode is adopted, a length of a Discontinuous Reception (DRX) cycle of the UE is required to be less than or equal to a length of an SCC system message modification cycle.
3. The method of claim 1, wherein when the asynchronous activation mode is used and the base station transmits the dedicated signaling, the method further comprises: the dedicated signaling is transmitted before the system message broadcasted by the base station side is updated or after the system message broadcasted by the base station side is updated.
4. The method of claim 1, further comprising: if the network system message is updated at the time when the base station sends the special signaling to the UE, the base station indicates the UE to adopt the asynchronous activation mode to realize the system message update in the sent special signaling; otherwise, the base station indicates the UE to adopt the synchronous activation mode to realize system message updating in the special signaling sent by the base station, and indicates the effective time of the system message updating.
5. The method of claim 4, wherein when the UE selects the synchronization activation mode according to the indication of the base station, the method further comprises: in the dedicated signaling, when a system message update occurs on one component carrier, an SFN indicating that the system message update is in effect, or a system message indicating which system message modification period is later than the updated system message modification period is in effect, or a system message indicating how many system message modification periods are later than the updated system message modification period is in effect;
or, in the case that a plurality of component carriers have system message updates at the same time, in the dedicated signaling, the dedicated signaling indicates in which system message modification period the system message updates of each component carrier take effect, or after how many system message modification periods the system message updates of each component carrier take effect.
6. The method of claim 5, wherein in case of system message update occurring in multiple component carriers simultaneously, the method further comprises: and indicating all the component carriers by adopting one piece of special signaling or adopting a plurality of pieces of special signaling, wherein each piece of special signaling respectively indicates one component carrier correspondingly.
7. The method of claim 1, wherein the comparing further comprises:
UE receives a special signaling carrying a system message updating indication and acquires the updating time of a network system message; the UE receives a special signaling carrying updated system message content and acquires the receiving time of the signaling; and comparing the receiving time of the signaling with the updating time of the network system message, and selecting to adopt the synchronous activation mode or the asynchronous activation mode.
8. The method of claim 7, wherein in making the comparison, the method further comprises: if the receiving time of the signaling is earlier than the updating time of the network system message, selecting to adopt the synchronous activation mode to realize the synchronous system message updating between the UE and the base station; otherwise, the asynchronous activation mode is selected to realize asynchronous system message updating between the UE and the base station.
9. A system for realizing system message updating is characterized in that the system comprises an updating unit, a base station and a processing unit, wherein the updating unit is used for activating updated system messages by UE in a synchronous activation mode or an asynchronous activation mode and realizing synchronous or asynchronous system message updating between the UE and the base station; wherein,
when the synchronous activation mode is adopted, after receiving a special signaling sent by a base station, the UE starts to use the system message configuration carried in the special signaling until the activation time; the UE receives a system message update paging message from a Primary Component Carrier (PCC), wherein the system message update paging message indicates which component carrier the system message update occurs on; when the synchronous activation mode is adopted, the activation time specifically includes: the system message update specified in the dedicated signaling takes effect in a System Frame Number (SFN), or a time obtained by the UE through calculation according to a system message modification period of a Primary Component Carrier (PCC), or a time obtained by the UE through calculation according to a system message modification period of a Secondary Component Carrier (SCC) specified in the dedicated signaling; or,
when the asynchronous activation mode is adopted, the UE immediately uses the system message configuration carried in the special signaling after receiving the special signaling sent by the base station; the method for acquiring the update time of the system message by the UE comprises the following steps: when the system message is a system message of a Secondary Component Carrier (SCC), the UE updates a paging message according to the system message received from a Primary Component Carrier (PCC) to obtain the updating time of the system message of the Secondary Component Carrier (SCC); or,
UE selects synchronous activation mode or asynchronous activation mode according to indication in special signaling sent by base station; the UE determines the system message modification period in which the system message takes effect according to the identification carried in the special signaling; or,
and the UE selects a synchronous activation mode or an asynchronous activation mode according to the comparison between different special signaling.
10. The system according to claim 9, wherein the system further comprises a selecting unit, configured to, when the network system message is updated at the time when the base station sends the dedicated signaling to the UE, instruct the UE to implement system message update in the asynchronous activation mode in the sent dedicated signaling; when the network system message is not updated at the time when the base station sends the special signaling to the UE, the base station indicates the UE to adopt the synchronous activation mode to realize the system message update in the sent special signaling, and indicates the effective time of the system message update.
11. The system of claim 10, further comprising an indication unit, configured to, in the dedicated signaling, indicate SFN indicating that system message update is in effect, or indicate that a system message updated after which system message modification period is in effect, or indicate that a system message updated after how many system message modification periods is in effect, when the UE selects to use the synchronization activation mode according to the indication of the base station and a component carrier is in system message update;
or, in the case that a plurality of component carriers have system message updates at the same time, in the dedicated signaling, the dedicated signaling indicates in which system message modification period the system message updates of each component carrier take effect, or after how many system message modification periods the system message updates of each component carrier take effect.
12. The system according to claim 11, wherein said indicating unit is further configured to indicate all component carriers by using a dedicated signaling or multiple dedicated signaling, where each dedicated signaling indicates a component carrier correspondingly, when the system message update occurs to multiple component carriers simultaneously.
13. The system of claim 9, further comprising a comparing and selecting unit, configured to receive a dedicated signaling carrying a system message update indication by the UE, and obtain an update time of the network system message; the UE receives a special signaling carrying updated system message content and acquires the receiving time of the signaling; comparing the receiving time of the signaling with the updating time of the network system message, and selecting to adopt the synchronous activation mode if the receiving time of the signaling is earlier than the updating time of the network system message; otherwise, the asynchronous activation mode is selected.
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