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WO2011079469A1 - Procédé et dispositif de mise à jour d'informations système - Google Patents

Procédé et dispositif de mise à jour d'informations système Download PDF

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Publication number
WO2011079469A1
WO2011079469A1 PCT/CN2009/076363 CN2009076363W WO2011079469A1 WO 2011079469 A1 WO2011079469 A1 WO 2011079469A1 CN 2009076363 W CN2009076363 W CN 2009076363W WO 2011079469 A1 WO2011079469 A1 WO 2011079469A1
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WO
WIPO (PCT)
Prior art keywords
system information
component carriers
carrier
update
component carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/076363
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English (en)
Chinese (zh)
Inventor
常俊仁
李亚娟
武雨春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN200980146455.1A priority Critical patent/CN102282869B/zh
Priority to PCT/CN2009/076363 priority patent/WO2011079469A1/fr
Publication of WO2011079469A1 publication Critical patent/WO2011079469A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a system information updating method and device. Background technique
  • CA Carrier Aggregation
  • CCs component carriers
  • a large bandwidth for example, higher than 20MHz
  • five 20MHz component carriers can be aggregated together into a downlink transmission bandwidth of 100MHz.
  • the UE In order to reduce the blind detection complexity of the UE (User Equipment), it is generally desirable for the UE to only listen to one CC, or only the CSS (Common Search Space) of some CCs in multiple CCs.
  • the UE can obtain the scheduling information of the system to send the public information by searching the CSS space, so as to correctly receive the public information of the system, and the public information may include a paging message, a system information, and the like.
  • a method for updating a single carrier system information includes: in an idle (Idle) mode, the UE listens to a paging message, and learns whether the system information is about to change through a paging message. If the system information changes, the UE is in the system. The system information is updated during the information change period.
  • the UE In Active mode, the UE has two ways to update the system information, namely the paging mechanism and the System Information Block 1 (SIB1) value tag mechanism.
  • SIB1 System Information Block 1
  • the paging mode of the active mode is similar to the update process of the Idle mode. Under the SIB1 mechanism, the UE receives the SIB1 message and checks whether the value of the value tag field changes. If it changes, the system information changes, and the UE changes the system information. Update system information during the cycle.
  • the prior art system information update method is directed to the case of a single carrier, and for a multi-carrier system, how does the UE update the system information of its CC? Become a problem.
  • Embodiments of the present invention provide a system information update method and device to implement update of component carrier system information.
  • the embodiment of the invention provides a method for updating system information, including:
  • the system information update broadcast message is obtained according to the indication of the scheduling information, or
  • the paging cancellation is obtained according to the indication of the scheduling information.
  • a system information update value of one or more component carriers in which a change in system information occurs is obtained from the system information update broadcast message or the paging message.
  • the embodiment of the invention further provides a method for updating system information, including:
  • the embodiment of the invention further provides a method for updating system information, including:
  • the one or more other component carriers are component carriers other than the primary component carrier
  • the common search space of the primary component carrier or the new primary component carrier is monitored.
  • the embodiment of the invention further provides a method for updating system information, including:
  • the one or more other The component carrier is a component carrier other than the main component carrier
  • Searching by means of time division multiplexing, a common search space of the one or more other component carriers and at least one primary component carrier to obtain scheduling information of the system information of the one or more other component carriers and updated system information.
  • the embodiment of the invention further provides a method for updating system information, including:
  • the common search space of the plurality of other component carriers is alternately searched in a time division multiplexing manner to acquire scheduling information and update information of the system information of the plurality of other component carriers.
  • System information While maintaining the common search space of the main component carrier, the common search space of the plurality of other component carriers is alternately searched in a time division multiplexing manner to acquire scheduling information and update information of the system information of the plurality of other component carriers. System information.
  • the embodiment of the invention further provides a user equipment, including:
  • a fourth monitoring unit configured to monitor a common search space of the primary component carrier
  • a scheduling information acquiring unit configured to: when the system information is updated to update the scheduling information of the broadcast message, acquire the system information update broadcast message according to the indication of the scheduling information, or
  • the paging message is obtained according to the indication of the scheduling information
  • a system information acquiring unit configured to acquire, from the system information update broadcast message or the paging message, a system information update value of one or more component carriers in which the system information change occurs.
  • the embodiment of the invention further provides a base station, including:
  • a message generating unit configured to embed one or more system information update values of the component carrier into a system information update broadcast message or a paging message of the primary component carrier;
  • a message sending unit configured to send the system information to update a broadcast message or a paging message.
  • the embodiment of the invention further provides a user equipment, including:
  • a third acquiring unit configured to learn, that the system information of one or more other component carriers is changed, where the one or more other component carriers are component carriers other than the primary component carrier; a third monitoring unit, configured to monitor a common search space of the one or more other component carriers, to obtain scheduling information of the system information of the one or more other component carriers, and updated system information, where one or more After the other system information composing the carrier, the common search space of the primary component carrier or the updated primary component carrier is monitored.
  • the embodiment of the invention further provides a user equipment, including:
  • a first acquiring unit configured to learn, that the system information of one or more other component carriers is changed, where the one or more other component carriers are component carriers other than the primary component carrier;
  • a first monitoring unit configured to alternately search a common search space of the one or more other component carriers and at least one primary component carrier by using time division multiplexing to obtain system information of the one or more other component carriers Scheduling information and updated system information.
  • the embodiment of the invention further provides a user equipment, including:
  • a second acquiring unit configured to learn, that the system information of the plurality of other component carriers is changed, where the plurality of other component carriers are component carriers other than the main component carrier;
  • a second monitoring unit configured to alternately search a common search space of the plurality of other component carriers by using a time division multiplexing manner while acquiring a common search space of the primary component carrier to acquire the plurality of other component carriers Transfer information of system information and updated system information.
  • the embodiment of the present invention enables the UE to perform system information update on other CCs except the primary CC, and reduces the complexity of the blind detection of the UE while satisfying the system information update, thereby saving the UE's work. Consumption.
  • FIG. 1 is a schematic diagram of a method for updating system information according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of another method for updating system information according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of another method for updating system information according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another method for updating system information according to an embodiment of the present invention
  • FIG. FIG. 7 is a schematic diagram of a user equipment according to an embodiment of the present invention
  • FIG. 7b is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a base station according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a method for updating system information according to an embodiment of the present invention, where the method includes:
  • Slla the system information of one or more other component carriers is changed, and the one or more other component carriers are component carriers other than the main component carrier;
  • S12a alternately searching for a common search space of the one or more other component carriers and at least one primary component carrier in a time division multiplexing manner to acquire scheduling information of system information of the one or more other component carriers and updated system message.
  • the common search space of the other component carriers and the main component carrier that are changed can reduce the complexity of the blind detection of the system while updating the information of the component carrier system, thereby saving the power consumption of the user equipment. For example, when the current main component carrier of the system is 2, use A and B respectively. It is indicated that if the system information of the other two component carriers C and D is changed, the common search space of the four component carriers A, B, C and D can be alternately searched by means of time division multiplexing.
  • the method may further include: maintaining the remaining main component carrier a common search space, the remaining primary component carriers being other primary component carriers than the at least one primary component carrier.
  • the current main component carrier of the system is large, the common search space of the main component carrier of the listening part can be maintained, and the time-division multiplexing mode is alternately searched for another part of the main component carrier and the component carrier whose system information is changed, due to the introduction of the time division multiplexing mode. It can still reduce the complexity of blind detection of the system.
  • the current main component carrier of the system is three, namely, B and E, and the common search space of the main component carriers C, D and the other component carriers C and D whose system information changes may be alternately searched by means of time division multiplexing.
  • the other main component carrier E can maintain its listening state at all times, which is not limited in this embodiment.
  • system information of any one or more primary component carriers may also be changed, that is, the above-mentioned time division multiplexing mode is used to monitor, in addition to the one or more other component carrier system information changes.
  • the system information of the at least one primary component carrier or other primary component carrier that is still being monitored may also be changed.
  • the user equipment may also obtain the system information of the primary component carrier through the monitoring process.
  • FIG. 1b is a schematic diagram of another method for updating system information according to an embodiment of the present invention, where the method includes:
  • Sllb knowing that system information of a plurality of other component carriers is changed, and the plurality of other component carriers are component carriers other than the main component carrier;
  • S12b while maintaining the common search space of the primary component carrier, alternately searching for a common search space of the plurality of other component carriers in a time division multiplexing manner to acquire scheduling information of system information of the plurality of other component carriers. And updated system information.
  • the embodiment corresponding to FIG. 1b is different from the corresponding embodiment of FIG. 1a in that: the current main group of the system The carrier is kept in the listening state, and the plurality of other component carriers that change the system information are alternately monitored by the time division multiplexing mode, and the multiple component carriers whose system information changes are not simultaneously monitored at the same time, and the carrier system information is updated. At the same time reduce the complexity of blind detection of the system.
  • part or all of the main component carriers of the main component carrier that are monitored may also change system information, and the system information corresponding to the main component carrier may also be obtained by maintaining the monitoring process. .
  • FIG. 2 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention.
  • the method includes: S21: learning that system information of one or more other component carriers is changed, and the one or more other component carriers are a component carrier other than the main component carrier;
  • S22 Listen to a common search space of the one or more other component carriers to obtain scheduling information of system information of the one or more other component carriers and updated system information.
  • these component carriers different from the main component carrier may be referred to as other component carriers, and other components in which system information changes.
  • the common search space of the carrier is monitored to obtain system information of one or more other component carriers whose system information has changed. After updating the system information, the original primary component carrier can continue to be monitored, and the one or more other component carriers are no longer monitored; if the primary component carrier is updated, the updated primary component carrier can also be monitored.
  • the method can be used to enable the UE to obtain updated system information of other component carriers, and the UE does not have to listen to the other component carriers as always after listening to the main component carrier, and after updating the system information, return to the main component carrier for monitoring, saving
  • Listening to the common search space of the one or more other component carriers may include replacing one or more primary component carriers with the one or more other component carriers to listen for a common search of the one or more other component carriers space. That is, the UE originally listens to the main component carrier A, and when it learns that another carrier B system information changes, it can listen to the common search space of another carrier B, suspend the monitoring of the main component carrier A, and can acquire the carrier B. After the system information, return to the main component carrier A for monitoring.
  • the monitoring a common search space of the one or more other component carriers includes adding the one or more other component carriers to a primary component carrier set to listen to the one or more other components.
  • the other component carriers that are to be monitored are added to the primary component carrier set, and the other component carriers are monitored as the primary component carrier to obtain system information of other component carriers.
  • the adding one or more other component carriers to the primary component carrier set can include replacing one or more primary component carriers in the primary component carrier set with the one or more other component carriers. That is to say, one or more component carriers in the main component carrier set can be stopped and the one or more other component carriers are monitored.
  • the UE can start to listen to the component carrier D while listening to the main component carriers A, B, and C, and can obtain the component carrier D. Stop listening to D after the system information. Specifically, the UE may monitor the carrier D as the primary carrier for monitoring, that is, add the carrier D to the primary component carrier set, where the new primary component carrier set includes eight, B, C, and D. However, the carrier D does not really become the primary component carrier, and it can only become the primary component carrier temporarily. After the system information of the carrier D is obtained by monitoring, the UE can continue to monitor the original primary carrier carrier, B and C, and stop. Listening to the component carrier D.
  • the UE may also replace the original primary carrier C with the carrier D, that is, start listening to A, B, and D; or the UE may replace all the original primary carriers A, B, and C with the carrier D, and only listen to the carrier D. .
  • the UE may re-monitor the original primary component carrier, or the UE may also modify the original primary component carrier, so that after acquiring the system information of the carrier D, the UE monitors the primary component carrier and the original eight.
  • the B and C are different, that is, the main component carrier that monitors the update, and the updated main component carrier may be partially or completely different from the original main component carriers A, B, and C.
  • the updated main component carrier may be A, B and E can also be E, F and G.
  • the UE may also use the component carrier D as an updated primary component carrier. For example, after obtaining the system information of the carrier D, the carriers eight, B, C, and D are still monitored, and then A, B, C, and D are updated.
  • the main component carrier, that is, carrier D is the true primary component carrier, and is no longer a temporary primary component carrier.
  • the UE can also monitor the updated main component carriers A, B, and D, which is not limited in this embodiment.
  • the number of updated primary component carriers may be greater than the original primary component carrier number, as long as the number of updated primary component carriers is not greater than the number of component carriers that the system can configure for the UE. For example, when the UE can only listen to a maximum of 3 carriers, the number of updated primary CCs cannot exceed 3. It is assumed that the UE can only listen to one carrier. At this time, there is only one carrier in the main component carrier set, and the main component carrier is A. When the system information update occurs on the carrier B, the carrier B can be temporarily used as the main component carrier.
  • Listening that is, replacing the original main component carrier A with the carrier B, that is, stopping listening to the main component carrier A, and the monitoring carrier can recover the original main component carrier A after receiving the system information of the carrier B, and no longer monitor the carrier B; After obtaining the system information of the carrier B, another updated main component carrier C can be monitored.
  • the system information may include: main system information and other system information other than the main system information.
  • the embodiment may further include: acquiring primary system information of one or more other component carriers at a fixed time-frequency location, and obtaining scheduling information of other system information other than the primary system information and corresponding system information by blind detection.
  • the method may include: obtaining indication information of whether the primary system information is changed, the indication information further indicating, when the identifier of the changed CC is indicated, whether the CC in which the system information change occurs is only a change of the MIB information. If the UE learns that the changed system information is the main system information, the UE may directly transmit the main system.
  • the updated main system information is obtained at the corresponding time-frequency position of the unified information, thereby avoiding unnecessary CSS space search and reducing blind detection complexity.
  • FIG. 3 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention, where the method includes:
  • the base station sends an indication message of the system information change to the user equipment, to indicate a component carrier whose system information changes.
  • the indication message may be a paging message, and specifically, an identifier of a CC in which a system information change may be added in a paging message of an existing LTE system, and a paging message after the identifier is added As an indication message of system information change.
  • S32 The user equipment determines whether the number of component carriers whose system information is changed is 1, if yes, execute S33; otherwise, execute S36.
  • S33 The user equipment determines whether the component carrier in which the system information change occurs is the main component carrier. If yes, execute S34, otherwise execute S35.
  • the user equipment acquires scheduling information of system information on a common search space of the primary component carrier, and updates system information of the primary group carrier in a system information change period.
  • the scheduling information of the system information is used to indicate the time-frequency location of the updated system information.
  • the user equipment # indicates that the system information change is switched to the component carrier where the system information change occurs, and the scheduling information of the system information is acquired in the common search space of the switched component carrier, and the handover is updated in the system information update period. After the system information of the component carrier.
  • S36 The user equipment detects a common search space of the plurality of component carriers whose system information is changed by means of time division multiplexing to update system information of the plurality of component carriers. After updating the system information of multiple CCs, the UE returns to its primary CC and continues to listen to the CSS space of the primary CC.
  • the UE detects the system information by means of time division multiplexing.
  • the UE may find the frame number of the system information starting to change based on the SFN (System Frame Number) mod (module) m - 0.
  • the UE may join the primary CC to the CC set that alternately searches for CSS.
  • FIG. 4 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention.
  • processes S41 to S45 are the same as processes S31 to S35.
  • Process S46 is different from S36 in Figure 3.
  • S46 includes: the user equipment monitors a common search space of the component carriers that change the main component carrier and the system information by means of time division multiplexing, so as to update system information of the component carriers whose system information changes. After the system information is updated, the UE returns to the primary CC and continues to listen to the CSS space of the primary CC. Alternatively, the UE may also change its primary CC after the system information is updated.
  • the eNB eNodeB, base station
  • the step of the UE determining the number of CCs in which the system information changes in S32 may be omitted, which is not limited in this embodiment.
  • the UE searches for its CSS space.
  • the embodiment is not limited.
  • the primary CC may be a CC selected by the UE from multiple CCs, or may be a CC designated by the eNB for the UE.
  • the UE may report the selected primary CC to the eNB.
  • the eNB considers that the primary CC selected by the UE is not suitable, it may also re-designate a primary CC for the UE. This embodiment does not limit the determining process of the primary CC.
  • the Master System Information Block may be sent at a fixed time-frequency location instead of being obtained by scheduling. Take it. That is to say, the UE does not need to detect the CSS space of the CC when acquiring the primary system information of a certain CC, so when the primary system information changes, the UE can directly obtain the changed system information from the fixed time-frequency location.
  • the update of the main system information is not distinguished from the update of other system information, but the UE information is generally notified to the UE to update the system information, which may cause the UE to access the CSS space. Make unnecessary searches. Therefore, in this embodiment, optimization can be performed to avoid the influence of the main system information update on the UE.
  • the optimization method is: in the indication message of the system information change (specifically, the paging message of the existing LTE system can be used as the indication message), whether the indication information of the change is changed, that is, the identifier of the CC indicating the change is indicated. At the same time, it further indicates whether the CC in which the system information change occurs is only a change in the information.
  • the UE learns that the changed system information is the ⁇ information of a certain CC according to the indication information of the system information change the UE may directly update the CC information of the corresponding CC without searching the CSS space of the CC, of course, The case where the system information changes the irrelevant other purpose and the UE needs to search the CSS space of the CC is not considered in the scope of the present invention.
  • the system information update is performed on the CC, and the number of times the UE blindly detects the PDCCH search space is minimized, and the power consumption of the UE can be effectively reduced.
  • the UE may listen to CSS spaces of multiple CCs, and the monitored multiple CCs are a subset of all CCs used by the UE. For convenience of description, those CCs in which the UE listens to the CSS space are referred to as primary CCs.
  • the number of CCs that the UE can simultaneously monitor the CSS space may be set by the system, or may be set by the eNB according to the capabilities of the UE, or the UE may set itself according to its capabilities.
  • the eNB may notify the UE of the M value by using a dedicated message when the UE establishes an RRC (Radio Resource Control) connection with the eNB.
  • RRC Radio Resource Control
  • the UE may report the M value to the eNB when establishing an RRC connection with the eNB.
  • the M value may also be stored in the core network.
  • the eNB may obtain this value from the core network.
  • the M value may also be specified by the system, and the eNB notifies the UE by using a broadcast message, or the M value may be fixedly configured in the system.
  • the number M of main CCs that can be monitored in this embodiment satisfies: 1 ⁇ M ⁇ S, S is The number of all CCs currently used by the UE.
  • M 1, that is, there is only one primary CC, this case has been described in the previous embodiment, which is mainly for the case where M is greater than one.
  • the number of CCs that the UE actually listens to the CSS space may be less than or equal to M, that is, J ⁇ M.
  • FIG. 5 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention, where the method includes:
  • the base station sends an indication message of the system information change to the user equipment, to indicate that the system information changes the component carrier.
  • the indication message may be a paging message, and specifically, an identifier of a CC in which a system information change may be added in a paging message of an existing LTE system, and a paging message after the identifier is added As an indication message of system information change.
  • S52 The user equipment determines whether the number of component carriers H whose system information is changed is less than or equal to M. If yes, execute S53; otherwise, execute S58.
  • S53 The user equipment determines whether the H component carriers that have changed the system information are all the main component carriers, and if yes, execute S54; otherwise, execute S55.
  • the user equipment acquires scheduling information of the system information from a common search space of the primary component carrier, and updates system information of the primary group carrier in a system information change period.
  • the user equipment obtains scheduling information corresponding to the system information of the component carrier from the common search space of the component carriers that have changed the system information, and updates the system information of the component carrier that changes the system information in the system information update period.
  • S57 The user equipment alternately detects a common search space of the component carriers that change the system information information by using time division multiplexing in a system information change period to update system information of the H component carriers.
  • the UE detects the CSS space of one or more CCs in each time interval, but the UE detects that the number of all CCs in the CSS space does not exceed M in a certain time interval.
  • S57 may also have the following alternative implementation manner. The UE selects (J + H ) - M ⁇ CC from the J CCs that listen to the CSS space, stops listening to the CSS space of the selected CC, and searches for H CCs that have changed system information. CSS space to update the system information of the H CCs.
  • the UE may return to the previous J primary CCs to listen to the CSS space.
  • the UE may also update the current set of primary CCs, that is, increase, decrease, or change the CCs in the primary CC set.
  • the update process of the primary CC set may be based on an indication of the eNB, or may be determined by the UE itself.
  • the user equipment detects the common search space of the component carriers that have changed the system information by using time division multiplexing in the system information change period, and updates the system information of the H component carriers.
  • the UE detects the CSS space of one or more CCs in each time interval, but the UE detects the number of CCs in the CSS space does not exceed M in a certain time interval.
  • the UE may return to the previous J primary CCs to detect the CSS space; or, the UE may also update the previous set of primary CCs, that is, increase, decrease or change the CCs in the primary CC set.
  • the update process of the primary CC set may be based on an indication of the eNB, or may be determined by the UE itself.
  • the system information of the changed CC is updated and can be updated as follows:
  • the H CCs are divided into Q groups, and the H CCs are
  • the UE may also add the J primary CCs that are being monitored to the time division multiplexed listening mode.
  • Step by step when the packet is updated, the number of CCs in each group does not exceed M, but specifically, which CC should be assigned to which group can be unqualified.
  • the J primary CCs in this embodiment may be selected by the UE from multiple CCs, or It is the eNB that is specified for the UE. In case the UE selects the primary CC by itself, the UE may report the selected primary CC to the eNB. If the eNB considers that the primary CC selected by the UE is not suitable, the primary CC may be re-designated for the UE, which is not limited in this embodiment.
  • the indication message of the system information change (specifically, the paging message of the existing LTE system may be used as the indication message), whether the indication information that the MIB changes, that is, the CC indicating the change is added, is added.
  • the identifier further indicates whether the CC in which the system information change occurred is merely a change in the MIB information.
  • the UE information indicating that the changed system information is the MIB information of a certain CC
  • the UE may directly update the MIB information of the corresponding CC without searching the CSS space of the CC.
  • the system information update is performed on the CC, and the number of times the UE blindly detects the PDCCH search space is minimized, which can effectively reduce the power consumption of the UE.
  • FIG. 6 is a schematic diagram of still another method for updating system information according to an embodiment of the present invention, where the method includes:
  • the paging cancellation ii is obtained according to the indication of the scheduling information.
  • S63a Obtain, from the system information update broadcast message or the paging message, a system information update value of one or more component carriers in which the system information change occurs.
  • the system information update value of the component carrier is obtained by updating the broadcast message or the paging message by the system information, thereby obtaining updated system information, and the complexity of the blind detection can be reduced without monitoring the CSS space of the corresponding CC.
  • the system information update value is a change value of its updated system information relative to its original system information.
  • the information that has not changed in the system information of the CC is not It will be sent to the UE in the system information update broadcast message or paging message.
  • the obtaining, by the system information update broadcast message or the paging message, the system information update value of the one or more component carriers that generate the system information change may include: acquiring the occurrence from the system information update broadcast message or the paging message One or more component-specific system information update values of the system information change; further comprising: obtaining a common system information update value of the component carriers by monitoring a common search space of the primary component carrier.
  • the update of the system information may be divided into two parts, and the part is the system information common to the component carriers, that is, the system information that constitutes the carrier common.
  • the public system information may refer to that the multiple component carriers can be shared. Or system information with the same information.
  • the other part is the system information specific to each component carrier, that is, the system information constituting the carrier specific.
  • the specific system information may refer to system information that is independent of each other or different from each other.
  • the UE may obtain the updated content of the public system information from any component carrier that is currently listening to its CSS space, for example, the primary CC.
  • the specific system information update value of the CC may be included in the system information update broadcast message or the paging message and sent to the system information update broadcast message or the paging message.
  • the system information update broadcast message or the paging message may include only one or more specific system information update values that constitute the carrier, so that the size of the corresponding message may be further reduced to save air interface resources. .
  • the change value of the CC-specific system information may also be notified to the UE by dedicated RRC (Radio Resource Control) signaling, the difference being that the dedicated RRC signaling is specifically sent to a certain or some Some UEs are sent instead of broadcast.
  • RRC Radio Resource Control
  • the obtaining, by the system information update broadcast message or the paging message, the system information update value of the one or more component carriers that generate the system information change may include: acquiring the occurrence from the system information update broadcast message or the paging message The updated value of the emergency system information of one or more component carriers that are changed by the system information, or the updated value of one or more component carrier-specific emergency system information that constitutes the carrier.
  • the eNB may also pass the updated value of the urgent system information through the system information broadcast message and the paging message. Or the RRC dedicated signaling notifies the UE.
  • the urgent system information refers to system information closely related to data transmission carried by dedicated RRC signaling, such as an RRC connection reconfiguration message, when a new CC is configured for a UE or a new CC is activated.
  • Emergency system information can also be further divided into specific emergency system information and public emergency system information.
  • the base station may perform UE-related RRC signaling, such as an RRC connection reconfiguration message, carrying the emergency system information closely related to the data transmission and composing carrier-specific information.
  • the specific emergency system information is obtained by the dedicated RRC signaling; the UE may extract the emergency system information that is common to the carrier from the primary carrier, that is, the emergency system information that is common to the carrier may not be sent to the UE in the dedicated RRC signaling.
  • the UE can obtain the updated value of the urgent system information without blind detection, or form the carrier-specific system information update value.
  • the UE may acquire scheduling information of the system information update broadcast message or the paging message, and acquire the system information update broadcast message or the paging message according to the indication of the scheduling information.
  • a scrambling and descrambling process may be introduced.
  • the UE may use a radio network temporary identifier to descramble the physical downlink control channel of the system information update broadcast message or the paging message scheduling information to obtain a system.
  • the information updates the broadcast message or the scheduling information of the paging message, acquires the system information update broadcast message or the paging message according to the indication of the scheduling information, and obtains one or more component carrier updates from the system information update broadcast message or the paging message.
  • System information In this embodiment, the UE may receive the system information to update the broadcast message or the paging message in any of the following two ways:
  • the UE uses SIU-RNTI (or P-RNTI) to detect scheduling information of a system information broadcast message (or paging message) in each transmission time interval, and receives the system information to update a broadcast message or a paging message;
  • SIU-RNTI or P-RNTI
  • the SIU-RNTI may be a wireless network temporary identifier used in message scrambling and descrambling when transmitting and receiving system information update broadcast messages (or paging messages).
  • the UE first receives the notification of the change of the system information, and after receiving the notification of the change of the system information of one or more CCs, the UE starts to use the SIU-RNTI (or P-RNTI) to detect the system information widely. Scheduling information of a message (or paging message), and receiving the system information to update a broadcast message or a paging message.
  • SIU-RNTI or P-RNTI
  • the manner in which the eNB sends the system information to update the broadcast message or the paging message may be in any of the following two ways:
  • the system information update broadcast message or the paging message includes a plurality of component carriers that generate system information changes (when the component carrier is formed)
  • the component carriers that change the system information also include the updated value of the system information that constitutes the carrier A).
  • the system information update broadcast message or the paging message includes a component of the generated system information change other than the component carrier A.
  • the updated value of the system information may include any one of the following information: 1.
  • FIG. 6b is a schematic diagram of still another method for updating system information according to an embodiment of the present invention, where the method includes:
  • S61b embedding system information update values of one or more component carriers into a system information update broadcast message or a paging message;
  • S62b Send the system information to update a broadcast message or a paging message.
  • the embodiment When transmitting the system information update broadcast message or the paging message, the embodiment carries the system information update value of one or more component carriers in which the system information change occurs, so that the UE can obtain the system information update without blind detection.
  • the value, thereby obtaining updated system information reduces the complexity of blind detection.
  • the base station can embed specific system information update values of one or more component carriers into the system information. Updating the broadcast message or sending the paging message; when the public system information changes, transmitting the system information change indication information to the user equipment, instructing the user equipment to obtain the public system information update value from the common search space of the current primary component carrier.
  • the base station may also embed the updated value of the emergency system information of the component carrier of the one or more component carriers in the system information update broadcast message or the paging message, so that the UE can obtain the updated value of the emergency system information without blind detection. Since only one or more specific system information update values constituting the carrier are carried in the system information update broadcast message or the paging message, the public system information update value does not need to be carried, and the system information update broadcast message or the paging message size can be reduced, saving Air interface resources. It can be understood that the above system information update broadcast message can be replaced by dedicated RRC signaling, except that the system information update value is sent by dedicated signaling instead of broadcast signaling.
  • the updated value of the system information may include any one of the following information:
  • the base station may use the radio network temporary identifier to scramble and transmit the physical downlink control channel PDCCH of the system information update broadcast message or the paging message scheduling information, thereby improving the security and reliability of message transmission.
  • the eNB may send a system information update broadcast message to the UE, where the system information update broadcast message includes one or more items that need to update system information.
  • the identifiers of the CCs and the system information of these CC changes.
  • information that does not change CC for those system information may not be broadcast.
  • the system information update broadcast message scheduling information that is, the scheduling system information update broadcast message, and the PDCCH (Physical Downlink Control Channel) of the message may be performed by using one RNTI (Radio Network Temporary Identity). Scrambling transmission, which can be referred to herein as System Information Update RNTI (SIU-RNTI).
  • SIU-RNTI System Information Update RNTI
  • the SIU-RNTI The UE may be notified in the system broadcast message, or may be notified by the eNB in a system broadcast message, after the UE establishes a connection with the eNB.
  • the UE may listen to the CSS space of the primary CC.
  • the system information is updated to update the scheduling information of the broadcast message
  • the corresponding system information update broadcast message may be read according to the indication of the scheduling information, and the updated system information of one or more CCs is obtained.
  • the UE may not acquire system information of the CC that it does not currently use.
  • the UE side needs to use the SIU-RNTI to descramble the PDCCH of the scheduling system information update broadcast message to obtain the scheduling of the system information update broadcast message.
  • information. For determining the effective start time of the change of the system information of the CC the following manner may be adopted: The eNB explicitly indicates the start time of the system information of the CC to start changing in the system information update broadcast message.
  • the timer may be used to determine, that is, when the UE receives the system information update broadcast message, the UE may start a timer, and when the timer reaches the preset time, the UE updates the system information of the CC; A timer may be started when the system information is updated to send a broadcast message, and when the timer reaches the preset time, the eNB changes the system information of the CC.
  • the UE may be optimized as follows: When the UE works in multiple When the CC is used, the SIU-RNTI may be used to perform blind detection and descrambling on the PDCCH for scheduling system information update broadcast messages. When the UE works in a single CC, the UE does not use the SIU-RNTI to perform the blind detection and descrambling. .
  • the eNB may send a paging message to the UE, where the paging message includes an identifier of one or more CCs whose system information needs to be updated, and corresponding changes occur.
  • System information In order to save system overhead, in the system information of each CC, information that has not changed may not be transmitted.
  • the scheduling information of the paging message that is, the scheduling paging message, the PDCCH of the scheduling paging message
  • the P-RNTI Paging RNTI, Paging Radio Network Temporary Identifier
  • the UE monitors the CSS space of the primary CC.
  • the UE When the scheduling information of the paging message is detected, the UE instructs to read the corresponding paging message according to the scheduling information, and acquires the updated system of the CC in which the system information change occurs from the paging message. information.
  • the UE may ignore the processing.
  • the effective start time for the system information change of the CC may also be similar to the previous processing mode.
  • the eNB may explicitly indicate in the paging message the start time at which the system information of the CC in which the system information change occurs begins to change.
  • an effective start time of the system information change that is, when the UE receives the paging message, starting a timer, and updating the system information of the CC when the timer reaches the preset time;
  • the eNB may also start a timer when the paging message is sent. When the timer reaches the preset time, the eNB changes the system information of the CC.
  • the UE may be optimized as follows: When the UE works in multiple When the CC is used, the PDCCH for scheduling the paging message may be descrambled by using the P-RNTI. When the UE works in a single CC, the descrambling may be performed without using the P-RNTI, but the same as the prior art.
  • the system information of a single CC that is currently working is updated by reading the value tag in the SIB1 (System Information Block 1). This embodiment does not specifically describe this.
  • the scheduling information of the paging message may also be obtained by using P-RNTI descrambling, but when the UE finds that the CC of the system information changed from the paging message is not the CC currently used by the UE.
  • the subsequent information field of the paging message can be ignored.
  • Figure 7a is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment includes: a first obtaining unit 71a, configured to learn that one or more other component carriers have changed system information, the one or more The other component carriers are component carriers other than the main component carrier;
  • a first monitoring unit 72a configured to alternately search the one or more of them by means of time division multiplexing It constitutes a common search space of the carrier and the at least one primary component carrier to acquire scheduling information of the system information of the one or more other component carriers and updated system information.
  • the user equipment in this embodiment alternately searches for other component carriers and main component carriers whose system information is changed by means of time division multiplexing, which can reduce the complexity of system blind detection while updating the information of the carrier system.
  • the first intercepting unit 72a is further configured to: keep the common search space of the remaining primary component carriers, and the remaining primary component carriers are other primary component carriers other than the at least one primary component carrier.
  • the user equipment may further include: a primary system information acquiring unit, configured to acquire primary system information of one or more other component carriers at a fixed time-frequency location of the one or more other component carriers.
  • Figure 7b is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment includes: a second acquiring unit 71b, configured to learn that system information of a plurality of other component carriers is changed, where the plurality of other component carriers are a component carrier other than the main component carrier;
  • a second monitoring unit 72b configured to alternately search a common search space of the plurality of other component carriers in a time division multiplexing manner while acquiring a common search space of the primary component carrier to obtain the plurality of other component carriers Scheduling information of system information and updated system information.
  • the difference from the user equipment in FIG. 7a is that the user equipment in this embodiment keeps listening state to the current main component carrier of the system, and alternately monitors multiple other component carriers whose system information is changed by using time division multiplexing mode. It is not necessary to simultaneously monitor multiple component carriers whose system information changes at the same time, and reduce the complexity of system blind detection while updating the carrier system information.
  • the user equipment may further include: a main system information acquiring unit, configured to acquire a time-frequency location of receiving the main system information, and acquire main system information of the other component carriers at the time-frequency position.
  • FIG. 8 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment includes: a third acquiring unit 81, configured to learn, that one or more other component carriers have changed system information, the one or more The other component carriers are component carriers other than the main component carrier;
  • a third monitoring unit 82 configured to monitor a common search space of the one or more other component carriers, to obtain scheduling information of the system information of the one or more other component carriers, and an updated system
  • the system information after obtaining system information of one or more other component carriers, monitors a common search space of the primary component carrier or the updated primary component carrier.
  • the user equipment monitors the system information of one or more other component carriers that have changed the system information, and listens to the main component carrier after updating the system information.
  • the third listening unit 82 may further include: a first listening module configured to replace one or more primary component carriers with the one or more other component carriers to listen to the one or more other component carriers Public search space.
  • the third listening unit 82 can also further include: a second listening module configured to join the one or more other component carriers to the primary component carrier set to listen to the common search space of the one or more other component carriers.
  • the user equipment may further include: a primary system information acquiring unit, configured to acquire primary system information of one or more other component carriers at a fixed time-frequency location of one or more other component carriers.
  • FIG. 9 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment includes: a fourth monitoring unit 91, configured to monitor a common search space of a primary component carrier;
  • the scheduling information acquiring unit 92 is configured to: when detecting the scheduling information of the system information update broadcast message, acquire the system information update broadcast message according to the indication of the scheduling information, or
  • the paging message is obtained according to the indication of the scheduling information
  • the system information obtaining unit 93 is configured to acquire, from the system information update broadcast message or the paging message, a system information update value of one or more component carriers in which the system information change occurs.
  • the user equipment in this embodiment obtains updated system information of one or more component carriers by updating the broadcast message or the paging message by the system information of the primary component carrier, and does not need to monitor the CSS space of the corresponding CC, thereby reducing the complexity of the blind detection.
  • the system information obtaining unit 93 may further include: a descrambling module configured to descramble the physical downlink control channel of the scheduling information of the system information update broadcast message or the paging message by using the wireless network temporary identifier to obtain system information update Scheduling information of a broadcast message or a paging message, and acquiring a system information update broadcast message or a paging message according to the indication of the scheduling information, The updated system information of one or more component carriers is obtained from the system information update broadcast message or the paging message.
  • a descrambling module configured to descramble the physical downlink control channel of the scheduling information of the system information update broadcast message or the paging message by using the wireless network temporary identifier to obtain system information update Scheduling information of a broadcast message or a paging message, and acquiring a system information update broadcast message or a paging message according to the indication of the scheduling information,
  • the updated system information of one or more component carriers is obtained from the system information update broadcast message or the paging message.
  • FIG. 10 is a schematic diagram of a base station according to an embodiment of the present invention.
  • the base station includes: a message generating unit 101, configured to embed one or more system information update values of a component carrier into a system information update broadcast message or a paging message. ;
  • the message sending unit 102 is configured to send the system information update broadcast message or paging message.
  • the corresponding message carries the updated system information of one or more other component carriers, and the UE does not need to blindly detect the CSS of other CCs, thereby reducing the complexity of blind detection. degree.
  • the message sending unit 102 may further include: a scrambling module, configured to scramble and transmit the physical downlink control channel PDCCH of the scheduling information of the system information update broadcast message or the paging message by using a wireless network temporary identifier, so that The message sending unit 102 can transmit the PDCCH of the scrambled scheduling information, thereby improving the security and reliability of message transmission.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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

Abstract

L'invention porte sur un procédé et un dispositif de mise à jour d'informations système qui concernent le domaine des technologies de communications. Le procédé peut consister à : surveiller l'espace de recherche commun (CSS) d'une porteuse composante primaire; lorsque des informations de planification d'un message de diffusion de mise à jour d'informations système sont détectées, acquérir le message de diffusion de mise à jour d'informations système conformément à l'indication des informations de planification, ou lorsque des informations de planification d'un message de recherche de mobile sont détectées, acquérir le message de recherche de mobile conformément à l'indication des informations de planification; et à partir du message de diffusion de mise à jour d'informations système ou du message de recherche de mobile, acquérir la valeur de mise à jour d'informations système d'une ou plusieurs porteuses composantes dont les informations système ont changé. Par adoption du procédé, il n'est pas nécessaire de surveiller le CSS de toutes les porteuses composantes correspondantes lorsqu'un équipement utilisateur (UE) acquiert les informations système mises à jour des porteuses composantes.
PCT/CN2009/076363 2009-12-31 2009-12-31 Procédé et dispositif de mise à jour d'informations système Ceased WO2011079469A1 (fr)

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