CN107580300B

CN107580300B - System information updating method and device

Info

Publication number: CN107580300B
Application number: CN201610525462.4A
Authority: CN
Inventors: 张银成
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-07-05
Filing date: 2016-07-05
Publication date: 2022-03-01
Anticipated expiration: 2036-07-05
Also published as: CN107580300A

Abstract

The invention provides a method and a device for updating system information, wherein the method comprises the following steps: the method comprises the steps of sending an update request message for updating system information to a cell and/or a node under the condition that an update condition is met, wherein the update condition is that a notification message for changing the system information is received from the cell and/or the node, and the updated system information sent by the cell and/or the node is received, so that the problem that a transmission mechanism for new key system information and non-key system information in the related art has no new system information update mechanism is solved, and the user terminal needing to be updated is ensured to complete system information update.

Description

System information updating method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for updating system information.

Background

Cellular mobile communication technology has entered the 4G era over a short period of decades, and research into the 5G technology in the future has been undertaken to meet the anticipated future demands for higher, faster, and more up-to-date communications. The 5G will conduct further technical research in terms of higher throughput, more user connections, lower latency, higher reliability, and lower power consumption (including network side equipment and user terminals). Currently, the industry proposes a 5G technical goal: by about 2020, a 1000-fold increase in mobile data traffic per area, a 10-to 100-fold increase in throughput per User Equipment (UE), a 10-to 100-fold increase in the number of connected devices, a 10-fold increase in battery life of low-power devices, and a 5-fold decrease in end-to-end delay are achieved.

Among them, in order to reduce power consumption of system devices and provide radio resource utilization, research is being conducted on system information propagation mechanisms that have been widely adopted in 2G, 3G, and 4G. In 2G, 3G and 4G mobile communication systems, the transmission mechanisms of system information are generally similar, with some differences in detail; the common characteristics are as follows:

each cell transmits system information in a broadcast (broadcast) mode;

all system information is transmitted in a broadcasting mode;

the System Information is divided into a plurality of transmission blocks according to characteristics and functions, wherein important transmission blocks such as Management Information Byte (MIB) and System Management Byte (SIB 1) are transmitted in a fixed pre-configured manner (including transmission timing and transmission resources); while other transport blocks are transmitted in a pre-scheduled manner (including transmission opportunities and/or transmission resources), and the scheduling information is usually in SIB 1;

all system information is continuously broadcasted according to a pre-configuration or pre-scheduling mode;

under the system information transmission mechanism, with the continuous introduction of new technologies, transmission blocks are increased, system information content is increased, and consumed resources are increased. Moreover, the chances that a number of transport blocks for a particular new technology are actually required are relatively limited, and the constant broadcast transmission results in wasted resources and increased power consumption of the network side device.

In view of the above problems, a possible new system information transmission mechanism is as follows:

system information is divided into two types according to the importance degree of the information, one type is key system information (essential system information), and broadcast (broadcast) mechanism is still adopted for transmission; another type of other system information, called non-critical system information, is transmitted on-demand (on-demand) and using dedicated signaling (dedicated signaling) or broadcast or multicast mechanisms. The key system information generally includes very key system information related to initial access and/or cell residence, etc., so that information to be broadcast and transmitted by each cell is greatly compressed, and the information is periodically broadcast; the rest system information adopts a second type, and can adopt a special signaling or a broadcast or multicast (multicast) transmission mechanism, but is transmitted according to the requirement instead of being transmitted periodically so as to improve the resource utilization efficiency;

according to a deployment scene, key system information of a plurality of cells can be concentrated on a certain cell for periodic broadcast transmission; fig. 1 is a schematic diagram of broadcast system information broadcast transmission according to the related art, as shown in fig. 1, wherein key system information of a macro cell 1(cell 1), a small cell 2(cell 2) and a small cell 3(cell 3) of a new RAT are periodically broadcast-transmitted through the cell 1, and non-key system information is respectively transmitted. The key System Information of a plurality of cells form a System Information Table (SIT), and each Table element, such as SIT1/SIT2/SIT3 …, includes the key System Information of a cell. The key system information of each cell may be acquired through table indexing.

For non-critical system information, each cell may transmit to the UE on demand using dedicated signaling or a broadcast or multicast transmission mechanism.

Since the content in the system information may change, a new system information update mechanism needs to be designed for the transmission mechanism of the new critical system information and the non-critical system information.

An effective solution is not provided for the problem that a transmission mechanism for new critical system information and non-critical system information in the related art has no new system information updating mechanism.

Disclosure of Invention

The embodiment of the invention provides a method and a device for updating system information, which are used for at least solving the problem that a transmission mechanism aiming at new key system information and non-key system information in the related technology has no new system information updating mechanism.

According to an embodiment of the present invention, there is provided a system information updating method including:

sending an update request message for updating system information to a cell and/or a node under the condition that an update condition is met, wherein the update condition is that a notification message for changing the system information is received from the cell and/or the node;

receiving updated system information sent by the cell and/or the node.

Preferably, the update condition further includes: and determining that the system information needs to be updated according to a predetermined update reason.

Preferably, the update reason includes at least one of: and the stored system information is not updated within the time preset by the system and enters the cell newly.

Preferably, in a case that the system information includes a system information group or a system information block and carries identification information identifying the system information group or the system information block, and/or a status flag indicating an update status of the system information group or the system information block, the update request message includes:

when a notification message of system information change is received from the cell and/or the node and a changed system information group or system information block is explicitly indicated in the notification message, including identification information of the system information group or the system information block in the update request message;

when a notification message of system information change is received from the cell and/or the node and the received notification message does not explicitly indicate a changed system information group or system information block, comparing a status flag corresponding to the system information group or system information block in the notification message with a status flag corresponding to a corresponding system information group or system information block reserved by the User Equipment (UE), and including indication information of the system information group or system information block with the changed status flag in the update request message;

and under the condition that the system information needs to be updated according to a preset update reason, carrying the update reason and/or the identification information and/or the mark state of one or more system information groups or system information blocks in the update request message.

Preferably, the sending of the update request message for updating the system information to the cell and/or the node comprises:

for a non-connected UE, sending the update request message to the cell and/or the node through a random access procedure and/or a Radio Resource Control (RRC) link establishment procedure, where the non-connected UE is a UE in an RRC idle state and/or a UE in a state that needs to send data to the cell and/or the node or receive data from the cell and/or the node through the random access procedure;

and for the connected UE, sending system information update request information to the cell and/or the node through a predetermined RRC message or a specific physical channel, wherein the connected UE is the UE in the RRC connection state, or the UE in the state of not needing to send data to the cell and/or the node or receive data from the cell and/or the node through a random access process.

Preferably, the sending the update request message through a random access procedure and/or an RRC link establishment procedure includes:

sending an update request message through a first message (mask, abbreviated as MSG1) of a random access process;

sending an update request message through a third message MSG3 of the random access procedure;

sending an update request message through an RRC connection request message;

sending the update request message through an RRC connection setup completion message in an RRC connection setup process; alternatively, the first and second electrodes may be,

and after the RRC connection is established, sending the updating request message through the preset RRC message.

Preferably, the method further comprises:

and under the condition that the UE receiving the notification message is in a non-connected state, when information interaction with a cell and/or a node is required for a predetermined reason, sending the update request message to the cell and/or the node.

Preferably, the predetermined reason comprises at least one of: the method comprises the steps of downlink data arrival, uplink data sending, a mobility management location area updating process, a mobility management routing area updating process, RRC connection reestablishment, measurement report and uplink synchronization establishment, and beam training and alignment of a system adopting a beam forming technology.

Preferably, the method further comprises:

for the non-connected state UE, under the condition that the notification message carries an indication message for indicating the UE to discretely send the update request message in time, discretely sending the update request message according to the indication message; or, obtaining an indication message indicating that the update request message is sent discretely in time by one of the following methods: key system information, system pre-configuration, system pre-definition, and discretely sending the update request message according to the indication message.

Preferably, the indication message includes at least one of the following information:

a system information update window, wherein the information of the system information update window includes: a window start point, length and/or end point defined by a time, frame, subframe or slot number;

and the number N of the system information updating sub-windows.

Preferably, the method further comprises:

dividing the system information updating window into N sub-windows in time, and numbering the N sub-windows; and performing modular operation on the N sub-windows by using the unique identifier of the UE, wherein the obtained result corresponds to the sub-window of the updating request message initiated by the UE, and the sending time point of the updating request message is determined by combining the starting point of the system information updating window.

Preferably, the method further comprises:

and generating a random number which is more than 0 and less than 1, and determining the sending time point of the update request message according to the starting point of the system information update window, the length or the end point of the system information update window and the random number.

Preferably, the method further comprises:

and determining the sending time point of the updating request message by means of rounding corresponding to a frame, a subframe or a time slot.

Preferably, the receiving updated system information sent by the cell and/or the node comprises:

the updated system information is received in a dedicated, broadcast and/or multicast manner.

Preferably, receiving the updated system information in a dedicated, broadcast and/or multicast manner includes:

receiving configuration information of a service physical channel carried on a physical control channel by using a special identifier, a broadcast identifier and/or a multicast identifier, and receiving updated system information on the service physical channel according to the configuration information.

receiving updated system information in a second message MSG2 of a Random Access Channel (RACH) procedure;

receiving updated system information in a fourth message MSG4 of the RACH procedure;

receiving downlink resource configuration information in MSG2 of RACH process, and receiving updated system information through the downlink resource configuration information;

receiving updated system information in an RRC connection setup message; alternatively, the first and second electrodes may be,

the updated system information is received in a predetermined RRC message.

Preferably, after the receiving updated system information sent by the cell and/or the node, the method further includes:

and updating the corresponding system information group or system information block stored locally according to the received identification information and/or status mark of the updated system information group or system information block.

According to another aspect of the embodiments of the present invention, there is provided a system information updating method, including:

receiving an update request message for updating system information sent by User Equipment (UE) under the condition that an update condition is met, wherein the update condition is that a notification message for changing the system information is received from the cell and/or the node;

and sending the updated system information to the UE.

Preferably, the transmitting the updated system information to the UE includes:

and if a plurality of updating request messages of a plurality of UEs are received, integrating the plurality of updating request messages into one updating request message, forming an updated system message according to the one updating request message, and sending the updated system message to the UEs, wherein the system message comprises the plurality of updating request messages.

Preferably, the method further comprises:

and sending a notification message of system information change to the UE.

Preferably, the sending the notification message of the system information change to the UE includes:

and sending a notification message of the system information change to the UE through a paging message within a first preset time.

Preferably, the method further comprises:

grouping or blocking the system information to obtain a system information group or a system information block, and identifying the system information group or the system information block through identification information; and/or the presence of a gas in the gas,

setting a status flag indicating an update status for the system information group or the system information block.

Preferably, the notification message includes identification information and/or status flag of the system information group or the system information block.

Preferably, the transmitting the updated system information to the UE includes:

under the condition that the system information group or the system information block to be updated is explicitly indicated in the update request message, sending the updated corresponding system information group or system information block to the UE;

under the condition that the system information group or the system information block to be updated is not explicitly indicated in the update request message, sending the system information group or the system information block which is updated in a second preset time to the UE;

under the condition that the update request message comprises an update reason, sending different system information groups or system information blocks to the UE according to the update reason;

and under the condition that the update request message comprises the identification information and the state mark of the system information group or the system information block, comparing the mark state of the system information group or the system information block with the state mark corresponding to the corresponding system information group or the system information block reserved by the cell and/or the node, and sending the system information group or the system information block with different state marks to the UE.

Preferably, the method further comprises:

when sending a system information group or a system information block to the UE, sending identification information for identifying the system information group or the system information block and a state flag of an update state to the UE together.

Preferably, the notification message carries an indication message indicating that the UE discretely sends the update request message in time.

a window for updating system information, the information of the window comprising: a window start point, length and/or end point defined by a time, frame, subframe or slot number;

and the number N of the system information updating sub-windows.

Preferably, the transmitting the updated system information to the UE includes:

transmitting the updated system information in a second message of a random access RACH procedure;

transmitting the updated system information in a fourth message of the RACH procedure;

sending downlink resource configuration information in the MSG2, and sending updated system information through the downlink resource configuration information;

transmitting the updated system information in an RRC connection setup message; alternatively, the first and second electrodes may be,

the updated system information is transmitted in a predetermined RRC message.

Preferably, the receiving of the update request message for updating the system information sent by the UE includes:

receiving an update request message through a first message of a random access procedure;

receiving an update request message through a third message of the random access procedure;

receiving an update request message through an RRC connection request message;

receiving the update request message through an RRC connection setup completion message in an RRC connection setup process; alternatively, the first and second electrodes may be,

the update request message is received through a predetermined RRC message after the RRC connection setup procedure.

Preferably, the transmitting the updated system information to the UE includes:

the updated system information is transmitted in a dedicated, broadcast and/or multicast manner.

Preferably, transmitting the updated system information in a dedicated, broadcast and/or multicast manner includes:

and sending the carried configuration information of the service physical channel on a physical control channel by using a special identifier, a broadcast identifier and/or a multicast identifier, and sending updated system information on the service physical channel.

According to another aspect of the embodiments of the present invention, there is also provided a system information updating apparatus, including:

a first sending module, configured to send an update request message for updating system information to a cell and/or a node when an update condition is met, where the update condition is that a notification message for changing system information is received from the cell and/or the node;

a first receiving module, configured to receive updated system information sent by the cell and/or the node.

Preferably, the first sending module is further configured to,

receiving a notification message of system information change from the cell and/or the node; alternatively, the first and second electrodes may be,

and determining that the system information needs to be updated according to a predetermined update reason.

Preferably, the first transmitting module includes:

a first sending unit, configured to send, to a non-connected UE, the update request message to the cell and/or the node through a random access procedure and/or a radio resource control, RRC, link establishment procedure, where the non-connected UE is a UE in an RRC idle state and/or a UE in a state that needs to send data to the cell and/or the node or receive data from the cell and/or the node through the random access procedure;

a second sending unit, configured to send, to a connected UE, system information update request information to the cell and/or the node through a predetermined RRC message or a specific physical channel, where the connected UE is a UE in an RRC connected state, or a UE in a state that does not need to send data to or receive data from the cell and/or the node through a random access procedure.

Preferably, the first sending unit is further configured to,

sending an update request message through a first message MSG1 of a random access procedure;

sending an update request message through an RRC connection request message;

Preferably, the apparatus further comprises:

a first sending request module, configured to send the update request message to a cell and/or a node when the UE that receives the notification message is in a non-connected state and needs to perform information interaction with the cell and/or the node for a predetermined reason.

Preferably, the apparatus further comprises:

a second sending request module, configured to send, for a non-connected UE, an update request message discretely according to an indication message indicating that the UE sends the update request message discretely in time when the notification message carries the indication message indicating that the UE sends the update request message discretely in time; alternatively, the first and second electrodes may be,

an obtaining module, configured to obtain an indication message indicating that the update request message is sent discretely in time by one of the following manners: key system information, system pre-configuration, system pre-definition, and discretely sending the update request message according to the indication message.

Preferably, the indication message includes at least one of the following information: a system information update window, wherein the information of the system information update window includes: a window start point, length and/or end point defined by a time, frame, subframe or slot number; and the number N of the system information updating sub-windows.

Preferably, the apparatus further comprises:

the dividing module is used for dividing the system information updating window into N sub-windows in time and numbering the N sub-windows; and performing modular operation on the N sub-windows by using the unique identifier of the UE, wherein the obtained result corresponds to the sub-window of the updating request message initiated by the UE, and the sending time point of the updating request message is determined by combining the starting point of the system information updating window.

Preferably, the apparatus further comprises:

a first determining module, configured to generate a random number greater than 0 and less than 1, and determine a sending time point of the update request message according to a start point of the system information update window, a length or an end point of the system information update window, and the random number.

Preferably, the apparatus further comprises:

and the second determining module is used for determining the sending time point of the updating request message in a mode of rounding up corresponding to a frame, a subframe or a time slot.

a second receiving module, configured to receive an update request message for updating system information sent by a user equipment UE when an update condition is met, where the update condition is that a notification message for changing system information is received from the cell and/or the node;

a second sending module, configured to send the updated system information to the UE.

Preferably, the second sending module is further configured to,

Preferably, the apparatus further comprises:

a third sending module, configured to send a notification message of system information change to the UE.

Preferably, the third sending module is further configured to,

Preferably, the apparatus further comprises:

the identification module is used for grouping or blocking the system information to obtain a system information group or a system information block, and identifying the system information group or the system information block through identification information; and/or the presence of a gas in the gas,

a setting module, configured to set a status flag indicating an update status for the system information group or the system information block.

Preferably, the second sending module is further configured to,

the updated system information is transmitted in a predetermined RRC message.

Preferably, the second receiving module is further configured to,

receiving an update request message through an RRC connection request message;

By the invention, the updating request message for updating the system information is sent to the cell and/or the node, and the updated system information sent by the cell and/or the node is received, so that the problem that a transmission mechanism aiming at new key system information and non-key system information in the related technology has no new system information updating mechanism is solved, and the user terminal needing to be updated is ensured to complete the system information updating.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a diagram of broadcast transmission of broadcast system information according to the related art;

FIG. 2 is a first flowchart of a system information updating method according to an embodiment of the present invention;

FIG. 3 is a flow chart of a system information update method according to an embodiment of the present invention;

FIG. 4 is a first block diagram of a system information updating apparatus according to an embodiment of the present invention;

FIG. 5 is a block diagram two of a system information updating apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a system update principle according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a system update flow according to an embodiment of the invention;

fig. 8 is a diagram illustrating a random access procedure and an RRC connection establishment procedure according to an embodiment of the present invention;

FIG. 9 is a first diagram illustrating a system information update window according to an embodiment of the present invention;

fig. 10 is a diagram illustrating a system information update window according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In this embodiment, a method for updating system information is provided, and fig. 2 is a first flowchart of the method for updating system information according to the embodiment of the present invention, as shown in fig. 2, the process includes the following steps:

step S202, sending an update request message for updating system information to a cell and/or a node under the condition that an update condition is satisfied, wherein the update condition is that a notification message for system information change is received from the cell and/or the node;

step S204, receiving the updated system information sent by the cell and/or the node.

Through the steps, the updating request message for updating the system information is sent to the cell and/or the node, and the updated system information sent by the cell and/or the node is received, so that the problem that a transmission mechanism aiming at new key system information and non-key system information in the related technology has no new system information updating mechanism is solved, and the user terminal needing to be updated is ensured to complete the system information updating.

Preferably, the sending of the update request message for updating the system information to the cell and/or the node comprises: for a non-connected User Equipment (UE), sending the update request message to the cell and/or the node through a random access process and/or a Radio Resource Control (RRC) link establishment process, wherein the non-connected UE is a UE in an RRC idle state, and/or a UE in a state of needing to send data to the cell and/or the node or receive data from the cell and/or the node through the random access process; and for the connected UE, sending system information update request information to the cell and/or the node through a predetermined RRC message or a specific physical channel, wherein the connected UE is the UE in the RRC connection state, or the UE in the state of not needing to send data to the cell and/or the node or receive data from the cell and/or the node through a random access process.

Preferably, the sending the update request message through the random access procedure and/or the RRC link establishment procedure may include:

sending an update request message through an RRC connection request message;

Preferably, when the UE receiving the notification message is in a non-connected state and needs to perform information interaction with a cell and/or a node for a predetermined reason, the update request message is sent to the cell and/or the node.

Preferably, for a non-connected UE, in a case that the notification message carries an indication message indicating that the UE discretely sends an update request message in time, the update request message is discretely sent according to the indication message; or, obtaining an indication message indicating that the update request message is sent discretely in time by one of the following methods: key system information, system pre-configuration, system pre-definition, and discretely sending the update request message according to the indication message.

Preferably, the system information updating window is divided into N sub-windows in time, and the N sub-windows are numbered; and performing modular operation on the N sub-windows by using the unique identifier of the UE, wherein the obtained result corresponds to the sub-window of the updating request message initiated by the UE, and the sending time point of the updating request message is determined by combining the starting point of the system information updating window.

Preferably, the method further comprises: and generating a random number which is more than 0 and less than 1, and determining the sending time point of the update request message according to the starting point of the system information update window, the length or the end point of the system information update window and the random number.

Preferably, the transmission time point of the update request message is determined by rounding up to a frame, a subframe, or a slot.

Preferably, the receiving of the updated system information sent by the cell and/or the node may include: the updated system information is received in a dedicated, broadcast and/or multicast manner.

Preferably, receiving the updated system information in a dedicated, broadcast and/or multicast manner may include: receiving configuration information of a service physical channel carried on a physical control channel by using a special identifier, a broadcast identifier and/or a multicast identifier, and receiving updated system information on the service physical channel according to the configuration information.

Preferably, the receiving of the updated system information sent by the cell and/or the node may include: receiving updated system information in a second message MSG2 of a random access RACH procedure; receiving updated system information in a fourth message MSG4 of the RACH procedure; receiving downlink resource configuration information in MSG2 of RACH process, and receiving updated system information through the downlink resource configuration information; receiving updated system information in an RRC connection setup message; alternatively, the updated system information is received in a predetermined RRC message.

Preferably, after receiving the updated system information sent by the cell and/or the node, the corresponding system information group or system information block stored locally is updated according to the received identification information and/or status flag of the updated system information group or system information block.

An embodiment of the present invention further provides a system information updating method, and fig. 3 is a second flowchart of the system information updating method according to the embodiment of the present invention, and as shown in fig. 3, the process includes the following steps:

step S302, receiving an update request message for updating system information sent by user equipment UE under the condition of satisfying an update condition, wherein the update condition is that a notification message for system information change is received from the cell and/or the node;

step S304, the updated system information is sent to the UE.

Preferably, the transmitting the updated system information to the UE includes: and if a plurality of updating request messages of a plurality of UEs are received, integrating the plurality of updating request messages into one updating request message, forming an updated system message according to the one updating request message, and sending the updated system message to the UEs, wherein the system message comprises the plurality of updating request messages.

Preferably, the method further comprises: and sending a notification message of system information change to the UE.

Preferably, the sending the notification message of the system information change to the UE includes: and sending a notification message of the system information change to the UE through a paging message within a first preset time.

Preferably, the method further comprises: grouping or blocking the system information to obtain a system information group or a system information block, and identifying the system information group or the system information block through identification information; and/or setting a state flag representing an update state for the system information group or the system information block.

Preferably, the transmitting the updated system information to the UE includes: under the condition that the system information group or the system information block to be updated is explicitly indicated in the update request message, sending the updated corresponding system information group or system information block to the UE; under the condition that the system information group or the system information block to be updated is not explicitly indicated in the update request message, sending the system information group or the system information block which is updated in a second preset time to the UE; under the condition that the update request message comprises an update reason, sending different system information groups or system information blocks to the UE according to the update reason; and under the condition that the update request message comprises the identification information and the state mark of the system information group or the system information block, comparing the mark state of the system information group or the system information block with the state mark corresponding to the corresponding system information group or the system information block reserved by the cell and/or the node, and sending the system information group or the system information block with different state marks to the UE.

Preferably, the method further comprises: when sending a system information group or a system information block to the UE, sending identification information for identifying the system information group or the system information block and a state flag of an update state to the UE together.

Preferably, the indication message includes at least one of the following information: a window for updating system information, the information of the window comprising: a window start point, length and/or end point defined by a time, frame, subframe or slot number; and the number N of the system information updating sub-windows.

Preferably, the transmitting the updated system information to the UE includes: transmitting the updated system information in a second message of a random access RACH procedure; transmitting the updated system information in a fourth message of the RACH procedure; sending downlink resource configuration information in the MSG2, and sending updated system information through the downlink resource configuration information; transmitting the updated system information in an RRC connection setup message; alternatively, the updated system information is transmitted in a predetermined RRC message.

Preferably, the receiving of the update request message for updating the system information sent by the UE includes: receiving an update request message through a first message of a random access procedure; receiving an update request message through a third message of the random access procedure; receiving an update request message through an RRC connection request message; receiving the update request message through an RRC connection setup completion message in an RRC connection setup process; alternatively, the update request message is received through a predetermined RRC message after the RRC connection setup procedure.

Preferably, the transmitting the updated system information to the UE includes:

An embodiment of the present invention further provides a system information updating apparatus, and fig. 4 is a first block diagram of the system information updating apparatus according to the embodiment of the present invention, as shown in fig. 4, including:

a first sending module 42, configured to send an update request message for updating system information to a cell and/or a node if an update condition is met, where the update condition is that a notification message for system information change is received from the cell and/or the node;

a first receiving module 44, configured to receive the updated system information sent by the cell and/or the node.

Preferably, the first sending module 42 is further configured to,

Preferably, in a case that the system information includes a system information group or a system information block, and carries identification information identifying the system information group or the system information block, and a status flag indicating an update status of the system information group or the system information block, the update request message includes:

when a notification message of system information change is received from the cell and/or the node and a changed system information group or system information block is explicitly indicated in the notification message, the identification information of the system information group or the system information block is included in the update request message;

when a notification message of system information change is received from the cell and/or the node and the received notification message does not explicitly indicate the changed system information group or system information block, comparing a status flag corresponding to the system information group or system information block in the notification message with a status flag corresponding to a corresponding system information group or system information block reserved by the user equipment UE, and including indication information of the system information group or system information block with the changed status flag in the update request message;

and under the condition that the system information needs to be updated according to the preset update reason, carrying the update reason and/or the identification information and/or the mark state of one or more system information groups or system information blocks in the update request message.

Preferably, the first sending module 42 comprises:

a first sending unit, configured to send, to a non-connected UE, the update request message to the cell and/or the node through a random access procedure and/or an RRC link establishment procedure, where the non-connected UE is a UE in a radio resource control, RRC, IDLE state, and/or a UE in a state that needs to send data to the cell and/or the node or receive data from the cell and/or the node through the random access procedure;

and a second sending unit, configured to send, to a connected UE, system information update request information to the cell and/or the node through a predetermined RRC message or a specific physical channel, where the connected UE is a UE in an RRC connected state or a UE in a state that does not need to send data to or receive data from the cell and/or the node through a random access procedure.

Preferably, the first sending unit is further adapted to,

sending an update request message through a first message of a random access process;

sending an update request message through a third message of the random access process;

sending an update request message through an RRC connection request message;

the update request message is transmitted through a predetermined RRC message after the RRC connection setup procedure.

Preferably, the apparatus further comprises:

and the first sending request module is used for sending the updating request message to the cell and/or the node when the UE receiving the notification message is in a non-connected state and needs to perform information interaction with the cell and/or the node due to a predetermined reason.

Preferably, the predetermined reason comprises one of: the method comprises the steps of downlink data arrival, uplink data sending, a mobility management location area updating process, a mobility management routing area updating process, RRC connection reestablishment, measurement report and uplink synchronization establishment, and beam training and alignment of a system adopting a beam forming technology.

Preferably, the apparatus further comprises:

Preferably, the indication message includes at least one of the following information: a system information update window, wherein the information of the system information update window comprises: a window start point, length and/or end point defined by a time, frame, subframe or slot number; and the number N of the system information updating sub-windows.

Preferably, the apparatus further comprises:

a dividing module, configured to divide the system information update window into N sub-windows in time, number the N sub-windows, perform modular operation on the N sub-windows using a unique identifier of the UE, obtain a result corresponding to the sub-window where the UE initiates the update request message, and determine a sending time point of the update request message according to a starting point of the system information update window, where the unique identifier may include an IMSI.

Preferably, the apparatus further comprises:

a first determining module, configured to generate a random number greater than 0 and less than 1, and determine a sending time point of the update request message according to a start point of a system information update window, a length or an end point of the system information update window, and the random number.

Preferably, the apparatus further comprises:

and the second determining module is used for determining the sending time point of the updating request message in a mode of rounding up corresponding to the frame, the subframe or the time slot.

Preferably, the first receiving module 44 includes:

a receiving unit for receiving the updated system information in a dedicated, broadcast and/or multicast manner.

Preferably, the receiving unit is further adapted to,

receiving a physical control channel by using a special identifier, a broadcast identifier and/or a multicast identifier, and receiving updated system information on a service physical channel according to configuration information of the service physical channel carried by the physical control channel.

Preferably, the first receiving module 44 is further configured to,

receiving updated system information in a second message of a random access RACH procedure;

receiving updated system information in a fourth message of the RACH procedure;

receiving downlink resource configuration information in the MSG2, and receiving updated system information through the downlink resource configuration information;

the updated system information is received in a predetermined RRC message that includes a system information update response message.

Preferably, the apparatus further comprises:

and the updating module is used for updating the corresponding system information group or system information block stored locally according to the received identification information and/or state mark of the updated system information group or system information block.

An embodiment of the present invention further provides a system information updating apparatus, and fig. 5 is a block diagram ii of the system information updating apparatus according to the embodiment of the present invention, as shown in fig. 5, including:

a second receiving module 52, configured to receive an update request message for updating system information sent by a user equipment UE when an update condition is met, where the update condition is that a notification message for changing system information is received from the cell and/or the node;

a second sending module 54, configured to send the updated system information to the UE.

Preferably, the second sending module 54 is further configured to,

and if a plurality of updating request messages of a plurality of UEs are received, integrating the plurality of updating request messages into one updating request message, forming an updated system message according to the one updating request message, and sending the updated system message to the UE, wherein the system message comprises the plurality of updating request messages.

Preferably, the apparatus further comprises:

and a third sending module, configured to send a notification message of system information change to the UE.

Preferably, the third sending module is further configured to,

Preferably, the apparatus further comprises:

the identification module is used for grouping or blocking the system information to obtain a system information group or a system information block and identifying the system information group or the system information block through the identification information;

and the setting module is used for setting a state mark representing the updating state for the system information group or the system information block.

Preferably, the system notification message includes identification information and/or status flag of the system information group or the system information block.

Preferably, the second sending module 54 is further configured to,

under the condition that the system information group or the system information block to be updated is explicitly indicated in the update request message, sending the updated corresponding system information group or the updated system information block to the UE;

sending the system information group or the system information block which is updated in the second preset time to the UE under the condition that the system information group or the system information block to be updated is not explicitly indicated in the updating request message;

under the condition that the update request message comprises an update reason, different system information groups or system information blocks are sent to the UE according to the update reason;

and under the condition that the update request message comprises identification information and a state mark of a system information group or a system information block, comparing the mark state of the system information group or the system information block with the state mark corresponding to the corresponding system information group or the system information block reserved by the cell and/or the node, and sending the system information group or the system information block with different state marks to the UE.

Preferably, the apparatus further comprises:

a fourth sending module, configured to send, when sending the system information group or the system information block to the UE, the identification information for identifying the system information group or the system information block and the status flag of the update status to the UE together.

Preferably, the second sending module 54 is further configured to,

the updated system information is transmitted in a predetermined RRC message including a system information update response message.

Preferably, the second receiving module 52 is also used for,

receiving an update request message through an RRC connection request message;

Preferably, the second sending module 54 includes:

a third unit for transmitting the updated system information in a dedicated, broadcast and/or multicast manner.

Preferably, the third unit is further adapted to,

sending a physical control channel by using a special identifier, a broadcast identifier and/or a multicast identifier, carrying configuration information of a service physical channel on the physical control channel, and sending updated system information on the service physical channel.

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

step S1, sending an update request message for updating system information to a cell and/or a node if an update condition is satisfied, where the update condition is a notification message for receiving a system information change from the cell and/or the node;

step S2, receiving the updated system information sent by the cell and/or the node.

Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Fig. 6 is a schematic diagram of a system update principle according to an embodiment of the present invention, as shown in fig. 6, which is suitable for updating critical system information and non-critical system information, and fig. 7 is a schematic diagram of a system update flow according to an embodiment of the present invention, as shown in fig. 7, which includes the following steps:

step S702, a cell and/or a node sends system information change notification information to UE in the cell through a paging message;

step S704, UE sends request information for updating system information to cell and/or node;

step S706, the cell and/or the node sends the updated system information to the UE, and the UE completes the system information update.

The above nodes include any one of: a base station, a transmission reception point and a transmission point. The Transmission Point (TP) and the Transmission Reception Point (TRP) are communication devices different from the base station, and the TP and the TRP can perform wireless communication connection with the user equipment and broadcast or transmit related data to the user equipment.

Example one

Step 1: the cell and/or the node sends system information change notification information to UE in the cell through a paging message;

when a cell and/or a node changes system information of the cell and/or the node, the cell and/or the node needs to send a system information change notification to a user equipment (ue) through a paging message within a period of time (e.g., a paging cycle).

In order to indicate the change of the system information more specifically and accurately, the system information, such as non-critical system information, may be grouped or partitioned, each group or block may be numbered and/or named with identification information, and a value flag (value tag) indicating an update state may be set for each group or block, and each time a system information group or system information block is updated, the value tag is changed, for example, the value is increased by 1. In this way, the cell and/or the node may include, in the system information change notification, the identification information and/or value tag of the system information group or system information block explicitly indicating the one or more system information groups or system information blocks in which the change occurred and the corresponding change status.

Step 2: UE sends system information update request information to a cell and/or a node;

after receiving the system information change notification, the UE sends system information update request information to the cell and/or the node;

in addition, when the system information stored by the UE is no longer valid for a time reason, for example, the system information stored by the UE is not updated within a predefined or configured time of the system, or the UE newly enters a certain cell, for example, rebooting or moving into the cell in the cell, the UE will send system information update request information to the cell and/or the node;

for a UE in a Radio Resource Control (RRC) IDLE state and/or other UEs that cannot directly transmit/receive information to/from a cell and/or a node through a random access procedure, referred to as a non-connected UE for short, the UE needs to transmit system information update request information through a random access procedure and/or an RRC link establishment procedure. As shown in fig. 8, wherein the UE may carry the system information update request information in the MSG1 or MSG3 of the RACH procedure, or carry the system information update request information in an RRC connection setup complete message of the RRC connection setup procedure, or after the RRC connection setup procedure, send the system information update request information through a specific RRC message, such as a system information update request message.

For a UE in an RRC CONNECTED state or other UEs in a state that can directly transmit/receive information to/from a cell and/or a node through a random access procedure, or simply a CONNECTED UE, the UE may transmit system information update request information to the cell and/or the node through a specific RRC message. Or initiate a system information update request through a specific dedicated physical channel, such as PUCCH of LTE system.

For the case of receiving the system information change notification, if one or more system information groups or system information blocks in which the change occurs are explicitly indicated in the received system information change notification, the UE will include identification information of these system information groups or system information blocks in the system information update request information; the UE may further compare the value tag corresponding to one or more system information groups or system information blocks in the system information change notification with the value tag corresponding to the corresponding system information group or system information block reserved by the value tag, and only include indication information of the system information group or system information block whose transmission of the value tag is changed in the system information update request information, and send the indication information to the cell and/or the node.

For other situations, such as that the system information saved by the UE is no longer valid for a time reason or the UE newly enters a certain cell, the UE may include an update reason and/or identification information and/or a value tag of one or more system information groups or system information blocks in the system information update request information;

in particular, for a UE in a non-connected state and receiving a system information change notification, in order to avoid a collision caused by the process being initiated by multiple UEs at the same time and/or having excessive influence on other processes of other UEs, the UE may temporarily store the system information change notification information, and send system information update request information to a cell and/or a node until the UE needs to perform information interaction (including service data transmission) with the cell and/or the node for other reasons, and clear the system information change notification information at the same time, where the reasons include, but are not limited to, one or more of the following:

downlink data arrives;

sending uplink data;

mobility management related information update procedures, such as location area update, routing area update, and the like;

RRC connection reestablishment;

a measurement report;

establishing uplink synchronization;

for systems employing beam-forming (beam-forming) techniques, beam training and alignment;

and step 3: the cell and/or the node sends updated system information to the UE, and the UE completes the updating of the system information;

after receiving the system information update request information sent by the UE, the cell and/or the node sends all or part of the system information to the UE.

If the UE explicitly indicates one or more system information groups or system information blocks to be updated in the system information update request information, the cell and/or node sends the latest corresponding system information group or system information block to the UE.

If the UE does not explicitly indicate the system information group or system information block to be updated in the system information update request message, the cell and/or node autonomously has the updated system information group or system information block according to a period of time (such as a certain predefined or preconfigured system information update period) and sends the system information group or system information block to the UE;

if the system information updating request information comprises an updating reason value, the cell and/or the node sends different system information groups or system information blocks to the UE according to different reasons;

if the system information update request message includes the identification information of one or more system information groups or system information blocks and the value tags thereof, the cell and/or the node may compare the value tags of the system information blocks with the value tags corresponding to the corresponding system information groups or system information blocks reserved by the cell and/or the node, and only send the system information groups or system information blocks with different value tags to the UE.

In particular, if system information update request information of a plurality of UEs is received, the cell and/or the node integrates the plurality of requests into one system information update request and forms one updated system information, which includes all the system information update requests.

In particular, the cell and/or node may also transmit identification information identifying the system information groups or system information blocks, respectively, to the UE together with the value tag of the latest update status.

In particular, in addition to being sent to a certain UE in a dedicated manner, the cell and/or node may send the system information using a broadcast or multicast manner so that multiple UEs may receive the system information. For a system that uses a physical Control channel for dynamic scheduling, such as pdcch (physical Downlink Control channel) -based scheduling in an LTE system, in addition to using a dedicated UE identity rnti (radio Network Temporary identifier), a broadcast or multicast UE identity may be used for scheduling a service physical channel resource and transmitting information. In this way, for a UE that is monitoring a PDCCH channel, updated system information may be received, and a corresponding system information group or system information block that is previously stored locally may be updated according to the identification information and/or value tag of the system information group or system information block.

Fig. 8 is a diagram illustrating a random access procedure and an RRC connection setup procedure according to an embodiment of the present invention, as shown in fig. 8, wherein a cell and/or a node may carry an updated system information group or system information block to a UE in MSG2 or MSG4 of a RACH procedure; or the MSG2 carries downlink resource configuration information, and sends the updated system information group or system information block to the UE through the downlink resource; or after the RRC connection setup procedure, an updated system information group or system information block is transmitted to the UE through a specific RRC message, such as a system information update response message.

Example two:

when a cell and/or a node changes system information of the cell and/or the node, the cell and/or the node needs to send a system information change notification to a user equipment (ue) (user equipment) through a paging message within a period of time.

Meanwhile, in order to make the subsequent UE initiating the system information update request as time-discrete as possible, so as to avoid collision caused by multiple UEs initiating the process simultaneously and/or generate too much influence on other processes of other UEs, information indicating that the UE performs the system information update discretely in time may be included in the system information change notification, such as one or more of the following information:

a system information update window, the window related information comprising one or more of: a window starting point, length and/or end point defined by a time or frame, subframe or slot number;

the number N of the system information updating sub-windows is;

For a UE in an RRC CONNECTED state or other UEs in a state that can directly transmit/receive information to/from a cell and/or a node through a random access procedure, called a CONNECTED UE for short, the UE may transmit system information update request information to the cell and/or the node through a specific RRC message. Or initiate a system information update request through a specific dedicated physical channel, such as PUCCH of LTE system.

in particular, for a UE in a non-connected state that receives a system information change notification, in order to avoid a collision caused by the process being initiated by multiple UEs at the same time and/or excessive influence on other processes of other UEs, the UE may initiate a system information update request according to information indicating that the UE performs system information update discretely in time in the system information change notification. For example, corresponding to the information in step 1, fig. 9 is a schematic diagram of a system information update window according to the embodiment of the present invention, as shown in fig. 9, a UE divides the system information update window into N sub-windows in time according to the number N of system information update sub-windows, numbers of the sub-windows are 0, 1, …, and N-1, then performs a modulo operation on N by using a unique identifier of the UE, such as an IMSI, to obtain a result corresponding to the sub-window where the UE should initiate a system information update request, and determines a sending time point of the system information update request by combining a starting point of the system information update window. Alternatively, fig. 10 is a schematic diagram of a system information update window according to an embodiment of the present invention, where as shown in fig. 10, the UE generates a random number greater than 0 and smaller than 1, and then determines a sending time point of the system information update request according to the starting point of the system information update window + the length of the system information update window. The transmission time points determined by the above methods usually need to be rounded to correspond to a certain frame, subframe or slot.

In particular, the information used by the UE to update the system information discretely in time may also come from other means, such as critical system information, system pre-configuration, system pre-definition; or the UE combines the information which instructs the UE to update the system information discretely in time in the system information change notice and the information which instructs the UE to update the system information discretely in time in other modes to generate the finally used information which updates the system information discretely in time.

In particular, in addition to being sent to a certain UE in a dedicated manner, the cell and/or node may send the system information using a broadcast or multicast manner so that multiple UEs may receive the system information. For a system that uses a physical Control channel for dynamic scheduling, such as pdcch (physical Downlink Control channel) -based scheduling in an LTE system, in addition to using a dedicated UE identity rnti (radio Network Temporary identifier), a broadcast or multicast UE identity may be used for scheduling a service physical channel resource and transmitting information. In this way, for a UE that is monitoring a PDCCH channel, updated system information may be received, and a corresponding system information group or system information block that has been saved locally before may be updated according to a value tag of the system information group or system information block.

As shown in fig. 8, wherein a cell and/or node may carry an updated system information group or system information block to a UE in MSG2 or MSG4 of a RACH procedure; or the MSG2 carries downlink resource configuration information, and sends the updated system information group or system information block to the UE through the downlink resource; or after the RRC connection setup procedure, an updated system information group or system information block is transmitted to the UE through a specific RRC message, such as a system information update response message.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for updating system information, comprising:

receiving updated system information sent by the cell and/or the node;

wherein sending an update request message to update system information to the cell and/or the node comprises:

for a non-connected User Equipment (UE), sending the update request message to the cell and/or the node through a random access procedure establishment procedure, including: sending an update request message through a first message MSG1 of a random access procedure; or sending an update request message through a third message MSG3 of a random access procedure, wherein the non-connected UE is a UE in a state that needs to send data to or receive data from a cell and/or a node through the random access procedure;

for the connected UE, sending system information update request information to the cell and/or the node through a predetermined RRC message, including: and after the RRC connection is established, sending the update request message through the preset RRC message, wherein the connected UE is the UE in a state of not needing to send data to the cell and/or the node or receive data from the cell and/or the node through a random access process.

2. The method of claim 1, wherein the update condition further comprises: and determining that the system information needs to be updated according to a predetermined update reason.

3. The method of claim 2, wherein the update reason comprises at least one of: and the stored system information is not updated within the time preset by the system and enters the cell newly.

4. The method according to claim 1, wherein in a case that the system information includes a system information group or a system information block and carries identification information identifying the system information group or the system information block, and/or a status flag indicating an update status of the system information group or the system information block, the update request message includes:

5. The method of claim 2, 3 or 4, wherein sending an update request message to the cell and/or the node to update system information comprises:

for the UE in a non-connection state, sending the update request message to the cell and/or the node through a Radio Resource Control (RRC) link establishment process, wherein the UE in the non-connection state is the UE in an RRC idle state;

and for the connected UE, sending system information updating request information to the cell and/or the node through a specific physical channel, wherein the connected UE is the UE in the RRC connection state.

6. The method of claim 5, wherein sending the update request message via an RRC link establishment procedure comprises:

sending an update request message through an RRC connection request message; alternatively, the first and second electrodes may be,

and sending the updating request message through an RRC connection establishment completion message in the RRC connection establishment process.

7. The method of claim 5, further comprising:

8. The method of claim 7, wherein the predetermined reason comprises at least one of: the method comprises the steps of downlink data arrival, uplink data sending, a mobility management location area updating process, a mobility management routing area updating process, RRC connection reestablishment, measurement report and uplink synchronization establishment, and beam training and alignment of a system adopting a beam forming technology.

9. The method of claim 5, further comprising:

10. The method of claim 9, wherein the indication message comprises at least one of the following information:

and the number N of the system information updating sub-windows.

11. The method of claim 9, further comprising:

12. The method of claim 11, further comprising:

13. The method according to claim 11 or 12, characterized in that the method further comprises:

14. The method according to any of claims 1 to 4 and 6 to 12, wherein receiving updated system information sent by the cell and/or the node comprises:

15. The method of claim 14, wherein receiving updated system information in a dedicated, broadcast and/or multicast manner comprises:

16. The method according to any of claims 1 to 4 and 6 to 12, wherein receiving updated system information sent by the cell and/or the node comprises:

receiving updated system information in a second message MSG2 of a random access RACH procedure;

the updated system information is received in a predetermined RRC message.

17. The method according to any of claims 4, 6 to 12, wherein after said receiving updated system information sent by said cell and/or said node, the method further comprises:

18. A method for updating system information, comprising:

receiving an update request message for updating system information sent by User Equipment (UE) under the condition of meeting an update condition, wherein the update condition is that a notification message for changing the system information is received from a cell and/or a node;

transmitting the updated system information to the UE;

wherein receiving an update request message for updating system information sent by the UE includes:

receiving an update request message through a third message of the random access procedure; or

19. The method of claim 18, wherein sending updated system information to the UE comprises:

20. The method of claim 18, further comprising:

and sending a notification message of system information change to the UE.

21. The method of claim 20, wherein sending a notification message of a system information change to the UE comprises:

22. The method of claim 20, further comprising:

23. The method according to claim 22, wherein the notification message comprises identification information and/or status flag of a system information group or a system information block.

24. The method of claim 23, wherein sending updated system information to the UE comprises:

25. The method of claim 24, wherein the update reason comprises at least one of: and the stored system information is not updated within the time preset by the system and enters the cell newly.

26. The method of claim 24, further comprising:

27. The method of any one of claims 18 to 26,

the notification message carries an indication message indicating that the UE discretely sends the update request message in time.

28. The method of claim 27, wherein the indication message comprises at least one of the following information:

and the number N of the system information updating sub-windows.

29. The method of any of claims 18 to 26, wherein sending updated system information to the UE comprises:

the updated system information is transmitted in a predetermined RRC message.

30. The method according to any of claims 18 to 26, wherein receiving an update request message sent by the UE to update system information comprises:

receiving an update request message through an RRC connection request message; alternatively, the first and second electrodes may be,

and receiving the updating request message through an RRC connection establishment completion message in the RRC connection establishment process.

31. The method of any of claims 18 to 26, wherein sending updated system information to the UE comprises:

32. The method of claim 31, wherein sending updated system information in a dedicated, broadcast and/or multicast manner comprises:

33. A system information updating apparatus, comprising:

a first receiving module, configured to receive updated system information sent by the cell and/or the node;

wherein the first transmitting module comprises:

a first sending unit, configured to send, to a non-connected user equipment UE, the update request message to the cell and/or the node through a random access procedure establishment procedure, where the sending unit includes: sending an update request message through a first message MSG1 of a random access procedure; or sending an update request message through a third message MSG3 of a random access procedure, wherein the non-connected UE is a UE in a state that needs to send data to or receive data from a cell and/or a node through the random access procedure;

a second sending unit, configured to send, to a connected UE, system information update request information to the cell and/or the node through a predetermined RRC message, where the sending unit includes: and after the RRC connection is established, sending the update request message through the preset RRC message, wherein the connected UE is the UE in a state of not needing to send data to the cell and/or the node or receive data from the cell and/or the node through a random access process.

34. The apparatus of claim 33, wherein the first sending module is further configured to,

receiving a notification message of system information change from the cell and/or the node; alternatively, the system information is determined to need to be updated according to a predetermined update reason.

35. The apparatus of claim 34,

the first sending unit is further configured to send, to a non-connected UE, the update request message to the cell and/or the node through a radio resource control, RRC, link establishment procedure, where the non-connected UE is a UE in an RRC idle state;

the second sending unit is further configured to send, to a connected UE, system information update request information to the cell and/or the node through a specific physical channel, where the connected UE is a UE in an RRC connected state.

36. The apparatus of claim 35, wherein the first sending unit is further configured to,

37. The apparatus of claim 35, further comprising:

38. The apparatus of claim 35, further comprising:

39. The apparatus of claim 38, wherein the indication message comprises at least one of the following information: a system information update window, wherein the information of the system information update window includes: a window start point, length and/or end point defined by a time, frame, subframe or slot number; and the number N of the system information updating sub-windows.

40. The apparatus of claim 38, further comprising:

41. The apparatus of claim 40, further comprising:

42. The apparatus of claim 40 or 41, further comprising:

43. A system information updating apparatus, comprising:

a second receiving module, configured to receive an update request message for updating system information sent by a user equipment UE when an update condition is met, where the update condition is that a notification message for changing the system information is received from a cell and/or a node;

a second sending module, configured to send updated system information to the UE;

wherein the second receiving module is further used for

44. The apparatus of claim 43, wherein the second sending module is further configured to,

45. The apparatus of claim 43, further comprising:

46. The apparatus of claim 45, wherein the third sending module is further configured to,

47. The apparatus of claim 45, further comprising:

48. The apparatus of claim 47, wherein the second sending module is further configured to,

49. The apparatus according to any of claims 43-48, wherein the second sending module is further configured to,

the updated system information is transmitted in a predetermined RRC message.

50. The apparatus according to any one of claims 43 to 48, wherein the second receiving module is further configured to,