CN109526039B - Method and equipment for sending system information - Google Patents
Method and equipment for sending system information Download PDFInfo
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- CN109526039B CN109526039B CN201710848449.7A CN201710848449A CN109526039B CN 109526039 B CN109526039 B CN 109526039B CN 201710848449 A CN201710848449 A CN 201710848449A CN 109526039 B CN109526039 B CN 109526039B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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Abstract
The invention discloses a method and equipment for sending system information, which are used for solving the problem that a system architecture of 5G communication is reconstructed into two functional entities, namely a CU and a DU, but the system architecture does not clearly show a sending scheme of system information. In the embodiment of the invention, a CU in a system architecture of 5G communication is responsible for determining system information and time information used for determining a sending period of the system information, and sending the determined system information and the time information to a DU; and the DU is responsible for receiving the system information configured by the CU and the time information corresponding to the system information, determining a sending period according to the time information, and sending the system information corresponding to the time information after the determined sending time is up. The CU is responsible for generating and maintaining the system information, and meanwhile, the sending time of the system information is configured, the sending time of the system information is sent and maintained in the DU, and the system information is sent at fixed time, so that the sending of the system information is realized in a system architecture of 5G communication; further improving system performance.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and a device for sending system information.
Background
The system message indicates some basic features of the current cell or network and some common characteristics of the users, independent of the specific user. By receiving system information of the system, the mobile user can obtain some basic characteristics of the current network and the cell, and the system can show the coverage area of the cell through specific broadcasting in the cell to give specific channel information.
The LTE (Long Term Evolution) System message includes an MIB (Master Information Block) and a plurality of SIB (System Information Blocks) messages; the MIB message is broadcast on a PBCH (Physical broadcast Channel), and the SIB is delivered through an RRC (Radio Resource Control) message of a PDSCH (Physical Downlink Shared Channel). The SIB1 is carried by a "SysteminformationBlockType 1" message, and the SIB2 and other SIBs are carried by a "systeminformationjtsi)" message. One SI message may contain one or more SIBs. A UE (User Equipment) receives a system message (MIB/SIB) when it newly accesses a cell or when a broadcast message changes.
Currently, a system architecture RAN (Residential Access Network) of 5G (fifth generation mobile phone mobile communication standard) introduces a CU (Centralized Unit)/DU (Distributed Unit) architecture. For the high Layer segmentation scheme, the CU includes functions of RRC, SDAP (Service Discovery Application Profile) and PDCP (Packet Data Convergence Protocol), and the DU includes functions of RLC (Radio Link Control Protocol), MAC (Media Access Control, network interface Physical address) and PHY (Physical Layer).
The system architecture of 5G communication is reconfigured into two functional entities, CU and DU, but the system architecture does not specify the transmission scheme of system messages.
Disclosure of Invention
The invention provides a method for sending system information, which is used for solving the problem that a system architecture of 5G communication is reconstructed into two functional entities, namely a CU (channel Unit) and a DU (data Unit), but a sending scheme of a system message is not clear in the system architecture.
The embodiment of the invention provides a method for sending system information, which comprises the following steps:
a CU determines system information and time information for determining a transmission period of the system information;
and the CU sends the determined system information and the time information to the DU, so that the DU determines a sending period according to the time information and sends the system information according to the determined sending period.
The embodiment of the invention also provides a method for sending system information, which comprises the following steps:
the DU receives system information configured by the CU and time information corresponding to the system information;
the DU determines a sending period according to the time information;
and the DU sends the system information corresponding to the time information according to the determined sending period.
An embodiment of the present invention provides an apparatus for sending system information, where the apparatus includes: a processor and a transceiver:
the processor is used for carrying out data transmission through the transceiver and determining system information and time information used for determining a sending period of the system information; and sending the determined system information and the time information to a DU (data Unit), so that the DU determines a sending period according to the time information and sends the system information according to the determined sending period.
An embodiment of the present invention further provides an apparatus for sending system information, where the apparatus includes: a processor and a transceiver:
the processor is used for transmitting data through the transceiver and receiving system information configured by a CU and time information corresponding to the system information; determining a sending period according to the time information; and sending the system information corresponding to the time information according to the determined sending period.
An embodiment of the present invention provides an apparatus for sending system information, where the apparatus includes: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following:
determining system information and time information for determining a transmission period of the system information; and sending the determined system information and the time information to a Distributed Unit (DU) so that the DU determines a sending period according to the time information and sends the system information according to the determined sending period.
An embodiment of the present invention provides an apparatus for sending system information, where the apparatus includes: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following:
receiving system information from CU configuration and time information corresponding to the system information; determining a sending period according to the time information; and sending the system information corresponding to the time information according to the determined sending period.
In the embodiment of the present invention, in a system architecture of 5G communication, a CU is responsible for determining system information and time information used for determining a transmission period of the system information, and transmits the determined system information and the time information to a DU. And the DU is responsible for receiving the system information configured by the CU and the time information corresponding to the system information, determining a sending period according to the time information, and sending the system information corresponding to the time information after the determined sending time is up. The CU is responsible for generating and maintaining the system information, and meanwhile, the sending time of the system information sent and maintained in the DU and the timed sending are configured. Therefore, system information is transmitted in the system architecture of 5G communication; further improving system performance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic system architecture diagram of 4G and 5G according to the present invention;
FIG. 2 is a schematic diagram of a system information transmission mechanism between a CU and a DU according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a system for sending system information according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for sending system information according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for sending system information according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another apparatus for sending system information according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another apparatus for sending system information according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating a method for sending system information according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating another method for sending system information according to an embodiment of the present invention;
fig. 10 is a schematic view of a complete flow chart of a method for sending system information according to an embodiment of the present invention;
fig. 11 is a schematic view of a complete flow of another method for sending system information according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the system architectures of 4G and 5G are shown respectively, and it can be seen that BBU (basic processing Unit of access network) in 5G communication is reconfigured into two functional entities, CU (Centralized Unit) and DU (Distributed Unit).
The CU device processes a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and even can support a part of core network functions sinking to an access network, which is referred to as an edge computing network in the term, and can meet higher requirements of a future communication network for emerging services, such as video, network shopping, and virtual/augmented reality, on network delay. It is also due to the change of communication network elements and structure that the protocol stack will be adjusted and changed accordingly. The DU device mainly handles the physical layer functions and the functions of higher layers required by real-time performance, and considering the transmission resources of an RRU (radio remote unit) and a DU, part of the physical layer functions of the DU can be moved up to the RRU, and even more aggressive DUs can be merged with the RRU along with the miniaturization of the RRU.
The system information sending mechanism between the CU and the DU according to the embodiment of the present invention is shown in fig. 2, and it can be seen from the figure that the CU is responsible for determining and maintaining the system information, and at the same time, configures the sending time of the system information, and determines and maintains the sending time of the system information in the DU, and sends the system information at a fixed time.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3, the system for sending system information according to the embodiment of the present invention includes:
the CU300 is configured to determine system information and time information for determining a transmission period of the system information, and transmit the determined system information and the time information to the DU, so that the DU determines the transmission period according to the time information, and transmits the system information according to the determined transmission period.
And the DU301 is configured to receive system information configured by the CU and time information corresponding to the system information, determine a sending period according to the time information, and send the system information corresponding to the time information according to the determined sending period.
In the embodiment of the present invention, in a system architecture of 5G communication, a CU is responsible for determining system information and time information used for determining a transmission period of the system information, and transmits the determined system information and the time information to a DU. And the DU is responsible for receiving the system information configured by the CU and the time information corresponding to the system information, determining a sending period according to the time information, and sending the system information corresponding to the time information after the determined sending time is up. The CU is responsible for generating and maintaining the system information, and meanwhile, the sending time of the system information sent and maintained in the DU and the timed sending are configured. Therefore, system information is transmitted in the system architecture of 5G communication; further improving system performance.
Generally, there are two types of system messages: one is that no trigger is needed, i.e. no base station needs to apply for periodic transmission, and the other is that the base station needs to apply for periodic transmission or carried by dedicated signaling after system information needs to apply for.
And for the system information which does not need to be triggered, the CU determines the system information and the time information which need to be configured, before the target time is reached, the system information and the time information which is used for determining the sending period of the system information are placed in the system configuration message and sent to the DU, and after the determined sending time is reached, the DU sends the system information corresponding to the time information to the terminal which sends the message requesting the system information.
For the system information which needs to be triggered, different processing modes are provided according to whether the DU can understand the content of the terminal application system information message.
If the application of the system information is sent through Message 1 (Message 1) of the random access, the DU can completely understand the current system information request, and the DU can directly send the configured information system to the UE.
If the Message3 (Message 3) in the random access is used for system Message application and the DU can interpret the current Message as a system information request, the system information is directly sent to the UE.
If the DU does not recognize the current system information request, the DU needs to send the system information request to the CU, the CU informs the DU to send the system information, and the CU carries the latest system information and the time information of the system information; further, the type of system information and/or an indication of the transmitted system information may also be carried.
That is, when the DU does not recognize the current system information request, the CU may wait until the DU sends the information of the system information requested by the terminal to the CU; or it can be configured in advance and sent to DU, and send the system information to the terminal when DU receives the information that the terminal requests the system information.
That is, the system information types are classified into the following two types:
1. type of system information that needs to be triggered:
the system information type comprises the following two modes;
a. the terminal sends a message of applying for system information from the terminal to the DU, if the DU can not identify the current system information request, the DU sends the information of applying for system information from the terminal to the CU, the CU configures the system information according to the received message of applying for system information, and the DU sends the system information to the terminal of applying for system information after the configuration is finished;
b. the CU firstly sends the configured system configuration message to the DU, if the DU can identify the current system information request, the DU sends the message of applying the system information to the DU by the terminal, and the DU sends the configured system message to the terminal of applying the message of the system information.
2. Type of system information that does not need to be triggered:
the CU sends the configured system configuration message to the DU, and the DU sends the configured system message to the terminal applying for the message of the system information.
In this case, the CU directly determines the system information and the time information to be configured without waiting for the terminal to transmit a message for applying the system information to the DU, places the system information and the time information for determining the transmission period of the system information in the system configuration message and transmits the system information corresponding to the time information to the DU, and the DU transmits the system information corresponding to the time information to the terminal that transmits the message for requesting the system information after the determined transmission time is reached.
The system information and time information sent by the CU to the DU may be manually configured in the CU or may be notified by a higher layer.
Optionally, the system information that the CU determines needs to send to the DU is encoded system information.
The purpose of encoding the system information is to shorten bytes occupied by the system information and facilitate transmission.
Optionally, if the system information configured to the DU changes, the CU determines the changed system information and determines time information used for determining a transmission period of the system information, and transmits the determined system information and the time information to the DU;
correspondingly, the DU receives system information configured by the CU and time information corresponding to the system information; and determining a sending period according to the time information.
Specifically, the CU may send the determined system information and the time information to the DU through the reconfiguration information;
accordingly, the DU receives the system information configured by the CU and the time information through the reconfiguration information.
Optionally, since the DU can be sent only after the CU has configured the system information, the CU determines the sending time of the system information according to the system frame number;
since the time when the CU configures the system information cannot be later than the time when the DU transmits the system information, based on this, an alternative is:
the CU determines a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
correspondingly, before the target time arrives, the CU sends the determined system information and the time information to the DU.
The time delay between the CU and the DU refers to the time required for the CU to notify the DU, and the determined transmission time of the system information refers to the time transmitted in each period, for example, the period for transmitting the system message is 2s, and then the system message is transmitted every 2 s.
The target time is a final time limit, i.e. the CU sends the determined system information and the time information to the DU before the target time arrives. This is done to avoid that the target time has arrived and the CU has not yet sent the determined system information and the time information to the DU, resulting in that the DU has no way to send the system information and the time information to the terminal in time.
Optionally, when sending the determined system information and the time information to the DU, the CU sends the determined system information, the time information, and the system information type to the DU together.
The time information here includes, but is not limited to, the following:
sending a period and a starting time of system information;
the period of the system information is a terminal period used for determining that the DU sends the configured system information to the message applying for the system information, for example, if the period is 2S, the system information is sent every 2S;
the starting time refers to the starting time of the DU sending the configured system message to the terminal applying for the message of the system information; in specific implementation, the period may be implemented by a frame number of a subframe, for example, if a period time is 2s and a subframe 1 is a starting time, a period of 2s is also calculated from the subframe 1.
If the system information configured to the DU is changed, that is, the CU sends a page like a terminal, the CU sends a paging message to the DU together with the system reconfiguration message, so that the DU sends the paging message to the terminal.
The paging means that when a CN (Core Net, Core network) needs to establish a connection with a user, the CN initiates a paging procedure. Under the condition, the CN sends a paging message to a UTRAN (Terrestrial Radio Access Network) through the Iu interface, and the UTRAN sends a CN paging message to the UE through a paging procedure on the Uu interface, so that the paged UE initiates a signaling connection establishment procedure with the CN.
That is, if a CU needs to send a paging message to a terminal, the paging message may be sent to the DU together with a system reconfiguration message, so that the DU sends the paging message to the terminal together with the system reconfiguration message; if the CU does not need to send paging messages to the terminal, the CU does not need to send paging messages to the DU; or if the paging message is not generated simultaneously with the system reconfiguration message, it is not necessary to transmit the paging message to the DU.
It should be noted that the above listed information is only an example, and any information capable of determining the transmission period of the system information is applicable to the embodiment of the present invention.
Several possible implementations are listed below.
For example: the CU is already configured with a DU which sends the system message to a terminal applying for the message of the system message at the moment of each subframe 5, and the sending period is b;
then after the CU sends the time information to the DU, the DU sends the system information to the terminal requesting the system message at the time of subframe 5 in each period b.
And determining whether the system message is system information needing to be triggered or system information not needing to be triggered according to the determined time of the sending period and the type of the system message needing to be sent, wherein the sending time corresponding to different message types is different, namely the A message is sent once every period, and the B message is sent once every other period.
Optionally, the system information that the CU sends the determined system information and the time information to the DU may be a system configuration message and a system reconfiguration message, and specifically which system message to send needs to be confirmed according to a specific situation;
if the system information is not changed, the CU puts the determined system information and the time information into a system configuration message and sends the system configuration message to the DU;
if the system information changes, the CU sends the system information determined to change and the time information to the DU in a system reconfiguration message.
The system configuration message comprises the system message and the time information, and only the system configuration message is sent when the system configuration message is sent to the DU.
This is of course only a feasible way, and the system information determined by the CU and the time information may not be sent in the system configuration message in specific implementations.
When sending, if the CU needs to configure, the CU can directly configure through the system message; and may be sent by reconfiguration if there is a change. The following are described separately.
Firstly, configuring system messages;
1. the system message needs to be triggered and the DU cannot recognize the system information request;
the DU receives the information of the terminal application information and then sends a terminal request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message;
and the CU determines corresponding system information according to the received terminal application information sent by the DU, and determines time information for determining the sending period of the system information.
Optionally, after receiving the terminal application information sent by the DU, the CU determines the sending time of the system information according to the system frame number;
determining a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
after the CU sends the determined system information and the time information to the DU, the CU puts the determined system information, the time information and the system information type into a system configuration message and sends the system configuration message to the DU before the target time is reached.
The time information includes a transmission period and a start time of the system information.
And after the DU receives the system information configured by the CU and the time information corresponding to the system information, determining a sending period according to the time information.
Based on this, one possible implementation is: the DU determines a sending period according to the system information type and the time information in the system configuration message from the CU;
and the DU sends the system information corresponding to the time information according to the determined sending period.
The time information is the transmission period and the start time of the transmission system information.
And the DU receives system information configured by the CU and time information corresponding to the system information through a system configuration message.
2. The system message needs to be triggered and the DU can recognize the system information request;
the DU receives the message of the terminal application information, and the DU can identify the system message, so that the DU does not need to send a terminal request message to the CU;
before that, the CU determines corresponding system information and determines time information for determining a transmission period of the system information.
The subsequent steps are the same as the above-mentioned system message needs to be triggered and the DU cannot recognize the system information request, which is not described herein again.
Secondly, reconfiguring system messages;
1. the system information needs to be triggered and the DU can not identify the system information request;
the CU determines corresponding system information and determines time information for determining a transmission period of the system information.
The CU determines the sending time of the system information according to the system frame number;
the CU determines a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
after the CU sends the determined system information and the time information to the DU, the CU puts the determined system information, the time information and the system information type into a system configuration message and sends the system configuration message to the DU before the target time is reached.
The time information includes a transmission period and a start time of the system information.
After the CU determines the changed system information and determines the time information used for determining the sending period of the system information when the system information configured to the DU changes, the CU places the system information determined to change and the time information in a system reconfiguration message and sends the system information determined to change and the time information to the DU; then the DU receives system information configured by the CU and time information corresponding to the system information through the system reconfiguration message;
since the system information configured to the DU is changed by the CU, that is, the CU sends a page like a terminal, the CU sends a paging message to the DU together with the system reconfiguration message, so that the DU sends the paging message to the terminal; the DU receives system information from CU configuration and time information corresponding to the system information through a system reconfiguration message;
after the system information changes, the CU can send the paging message to the DU at the same time, and then the DU sends the paging message to the terminal.
The method for sending the DU to the terminal paging message may be sending over the air interface.
Optionally, after receiving system information reconfigured by the CU and time information corresponding to the system information, the DU determines a transmission period according to the time information;
based on this, one possible implementation is: the DU determines a sending period according to the system information type and the time information in the system configuration message from the CU;
and the DU sends the system information corresponding to the time information according to the determined sending period.
The time information is the transmission period and the start time of the transmission system information.
2. The system information does not need to be triggered and the DU can identify the system information request;
the CU determines corresponding system information and determines time information for determining a transmission period of the system information.
The CU determines the sending time of the system information according to the system frame number;
the CU determines a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
the CU sends the determined system information to the DU together with the time information and the system information type in a system configuration message.
The subsequent steps are the same as the above-mentioned system message needs to be triggered and the DU cannot recognize the system information request, which is not described herein again.
In the several ways, when implemented, there may be situations where different terminals request different messages:
for example, if the type of the system message requested by the terminal a is a and the type of the system message requested by the terminal B is B, the CU sends the system message B to the DU while sending the system message a; when the DU knows that the terminal A requests the system message as a, the DU sends the system message a to the terminal A; otherwise, when the DU knows that the terminal B requests the system message B, the DU sends the system message B to the terminal B.
In another case, the same terminal requests different system messages, for example, the system messages are divided into a and b, if the terminal requests the system message a from the DU, then the DU will send the system message a to the terminal; if after that the terminal again requests the system message b from the DU, the DU sends the system message b to the terminal.
As shown in fig. 4, an embodiment of the present invention provides an apparatus for sending system information, where the apparatus includes: processor 400 and transceiver 401:
the processor 400 is configured to perform data transmission through a transceiver, and determine system information and time information used for determining a transmission period of the system information; and sending the determined system information and the time information to a DU (data Unit), so that the DU determines a sending period according to the time information and sends the system information according to the determined sending period.
Optionally, the system information determined by the CU is encoded system information.
Optionally, the processor 400 is further configured to:
and sending the determined system information, the time information and the system information type to the DU together.
Optionally, the processor 400 is further configured to:
determining the sending time of the system information according to the system frame number;
determining a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
sending the determined system information and the time information to the DU, the processor 400 is further configured to:
and before the target time is reached, sending the determined system information and the time information to the DU by the CU.
Optionally, the processor 400 is specifically configured to:
and placing the determined system information and the time information in a system configuration message and sending the system configuration message to the DU.
Optionally, the processor 400 is specifically configured to:
and determining corresponding system information according to the received terminal application information sent by the DU, and determining time information for determining the sending period of the system information.
Optionally, the processor 400 is specifically configured to:
after the system information configured to the DU changes, determining the changed system information and determining time information for determining a transmission period of the system information;
sending the determined system information and the time information to the DU, specifically for:
and the determined system information and the time information are placed in a system reconfiguration message and sent to the DU.
Optionally, the processor 400 is further configured to:
and after the paging message needs to be sent to the terminal, sending the paging message to the DU together with the system reconfiguration message, so that the DU sends the paging message to the terminal.
As shown in fig. 5, the present invention provides an apparatus for transmitting system information, the apparatus comprising: at least one processing unit 500 and at least one memory unit 501, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following:
determining system information and time information for determining a transmission period of the system information; and sending the determined system information and the time information to a Distributed Unit (DU) so that the DU determines a sending period according to the time information and sends the system information according to the determined sending period.
Optionally, the system information determined by the CU is encoded system information.
Optionally, the processing unit 500 is further configured to:
and when the CU sends the determined system information and the time information to the DU, sending the determined system information, the time information and the system information type to the DU together.
Optionally, the processing unit 500 is further configured to:
before the CU sends the determined system information and the time information to the DU, determining the sending time of the system information according to the system frame number;
before the CU sends the determined system information and the time information to the DU, determining a target time according to the time delay between the CU and the DU and the determined sending time of the system information;
and before the target time arrives, sending the determined system information and the time information to the DU by the CU.
Optionally, the processing unit 500 is specifically configured to:
and placing the determined system information and the time information in a system configuration message and sending the system configuration message to the DU.
Optionally, the processing unit 500 is specifically configured to:
and determining corresponding system information according to the received terminal application information sent by the DU, and determining time information for determining the sending period of the system information.
Optionally, the processing unit 500 is specifically configured to:
after the system information configured to the DU changes, determining the changed system information and determining time information for determining a transmission period of the system information;
and the determined system information and the time information are placed in a system reconfiguration message and sent to the DU.
Optionally, the processing unit 500 is further configured to:
and after the paging message needs to be sent to the terminal, sending the paging message to the DU together with the system reconfiguration message, so that the DU sends the paging message to the terminal.
As shown in fig. 6, an embodiment of the present invention provides an apparatus for sending system information, where the apparatus includes: processor 600 and transceiver 601:
the processor 600 is configured to receive system information from a CU configuration and time information corresponding to the system information; determining a sending period according to the time information; and sending the system information corresponding to the time information according to the determined sending period.
Optionally, the processor 600 is specifically configured to:
and determining a sending period according to the system information type and the time information in the system configuration message from the CU.
Optionally, the processor 600 is specifically configured to:
receiving system information from CU configuration and time information corresponding to the system information through a system configuration message; or
And receiving system information from CU configuration and time information corresponding to the system information through a system reconfiguration message.
Optionally, the processor 600 is further configured to:
if the system request message in the terminal mode can be identified and the CU configures the system information corresponding to the system request message, the DU sends the system information according to the sending period of the system information corresponding to the system request message;
if a system request message of a terminal mode can be identified and the CU does not configure the system information corresponding to the system request message, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message;
and if the system request message of the terminal mode cannot be identified, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message.
As shown in fig. 7, the present invention provides an apparatus for transmitting system information, the apparatus comprising: at least one processing unit 700 and at least one memory unit 701, wherein said memory unit stores program code which, when executed by said processing unit, causes said processing unit to perform the following:
receiving system information from CU configuration and time information corresponding to the system information; determining a sending period according to the time information; and sending the system information corresponding to the time information according to the determined sending period.
Optionally, the processing unit 700 is specifically configured to:
and determining a sending period according to the system information type and the time information in the system configuration message from the CU.
Optionally, the processing unit 700 is specifically configured to:
receiving system information from CU configuration and time information corresponding to the system information through a system configuration message; or
And receiving system information from CU configuration and time information corresponding to the system information through a system reconfiguration message.
Optionally, the processing unit 700 is further configured to:
if the system request message in the terminal mode can be identified and the CU configures the system information corresponding to the system request message, the DU sends the system information according to the sending period of the system information corresponding to the system request message;
if a system request message of a terminal mode can be identified and the CU does not configure the system information corresponding to the system request message, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message;
and if the system request message of the terminal mode cannot be identified, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message.
Based on the same inventive concept, the embodiment of the present invention further provides a method for sending system information, and because the principle of solving the problem by the method is similar to the principle of solving the problem by the device in the embodiment of the present invention, the implementation of the method can refer to the implementation of the device, and repeated details are not repeated.
As shown in fig. 8, an embodiment of the present invention provides a method for sending system information, where the method includes:
in step 802, the CU sends the determined system information and the time information to the DU, so that the DU determines a sending period according to the time information, and sends the system information according to the determined sending period.
Optionally, the system information determined by the CU is encoded system information.
Optionally, the CU sends the determined system information and the time information to the DU, and further includes:
and the CU sends the determined system information, the time information and the system information type to the DU together.
Optionally, before the CU sends the determined system information and the time information to the DU, the method further includes:
the CU determines the sending time of the system information according to the system frame number;
the CU determines a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
the CU sends the determined system information and the time information to the DU, and the method further comprises the following steps:
and the CU sends the determined system information and the time information to the DU by the CU before the target time is reached.
Optionally, the sending, by the CU, the determined system information and the time information to the DU includes:
the CU sends the determined system information and the time information to the DU in a system configuration message.
Optionally, the determining, by the CU, system information and determining time information for determining a transmission period of the system information includes:
and the CU determines corresponding system information according to the received terminal application information sent by the DU, and determines time information for determining the sending period of the system information.
Optionally, the determining, by the CU, system information and determining time information for determining a transmission period of the system information includes:
after the system information configured to the DU changes, the CU determines the changed system information and determines time information for determining the sending period of the system information;
the CU sends the determined system information and the time information to the DU, and the method comprises the following steps:
and the CU puts the determined system information and the time information into a system reconfiguration message and sends the system reconfiguration message to the DU.
Optionally, after the system information configured to the DU is changed, the CU further includes:
and if the CU needs to send the paging message to the terminal, sending the paging message and the system reconfiguration message to the DU together so that the DU sends the paging message to the terminal.
As shown in fig. 9, an embodiment of the present invention provides a method for sending system information, where the method includes:
and step 902, the DU sends the system information corresponding to the time information according to the determined sending period.
Optionally, the determining, by the DU, a sending period according to the time information includes:
and the DU determines a sending period according to the system information type and the time information in the system configuration message from the CU.
Optionally, the receiving, by the DU, system information configured by the CU and time information corresponding to the system information includes:
the DU receives system information configured by the CU and time information corresponding to the system information through a system configuration message; or
And the DU receives system information configured by the CU and time information corresponding to the system information through a system reconfiguration message.
Optionally, the method further includes:
if the DU can identify a system request message in a terminal mode and the CU has configured system information corresponding to the system request message, the DU sends the system information according to a sending period of the system information corresponding to the system request message;
if the DU can identify a system request message in a terminal mode and the CU does not configure the system information corresponding to the system request message, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message;
and if the DU cannot identify the system request message of the terminal mode, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message.
Embodiments of the present invention provide a computer-readable medium having stored thereon a computer program that, when executed by a processor, performs the steps of the method of fig. 8 or the steps of the method of fig. 9.
As shown in fig. 10, taking the system message as the trigger, and the DU cannot recognize the system message as an example, a method for sending the system information is described in detail:
step 1000: the terminal sends a message for requesting system information to the DU;
step 1001: DU receives the message of requesting system information from terminal, and sends the message of requesting system information from terminal to CU;
CU determines the system information to be configured according to the message of the terminal request system information sent by DU;
step 1003: the CU encodes the determined system information which needs to be configured by the terminal;
step 1004: the CU determines the sending time of the system information needing to be configured according to the system frame number;
step 1005: the CU determines a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
step 1006: before the target time arrives, the CU puts the determined system information and the time information used for determining the sending period of the system information into a system configuration message and sends the system configuration message to the DU;
step 1007: the DU receives system information from the CU configuration through a system reconfiguration message and determines time information for determining a transmission period of the system information;
step 1008: the DU determines a transmission period according to time information for determining the transmission period of the system information;
step 1009: and after the determined sending time of the DU is reached, sending the system information corresponding to the time information to a terminal which sends a message requesting the system information.
Correspondingly, there is another way for the system message to be triggered, that is, the CU does not receive the message requesting the system information from the DU, but determines the system information to be configured in advance, and sends the configured system information to the DU, and sends the system information to the terminal when the DU receives the message requesting the system information from the terminal;
the manner of transmitting the system information in this case is similar to that described above and will not be described again.
As shown in fig. 11, taking the system message as an example that the trigger is not needed and the DU cannot recognize the system message, another method for sending the system information is introduced:
step 1100: the CU determines system information needing configuration;
step 1101: the CU encodes the determined system information;
step 1102, the CU determines the sending time of the system information needing to be configured according to the system frame number;
step 1103: the CU determines a target moment according to the time delay between the CU and the DU and the determined sending time of the system information;
step 1104: before the target time arrives, the CU puts the determined system information and the time information used for determining the sending period of the system information into a system configuration message and sends the system configuration message to the DU;
step 1105: the DU receives system information from the CU configuration through a system reconfiguration message and determines time information for determining a transmission period of the system information;
step 1106: the DU determines a transmission period according to time information for determining the transmission period of the system information;
step 1107: and after the determined sending time of the DU is reached, sending the system information corresponding to the time information to a terminal which sends a message requesting the system information.
The system information that the CU determines needs to configure may be a manual notification or a high-level notification.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (24)
1. A method for transmitting system information, the method comprising:
a centralized unit CU determines system information and time information for determining a transmission period and a transmission time of the system information;
the CU determines the sending time of the system information according to a system frame number, determines a target time according to the time delay between the CU and a distributed unit DU and the sending time of the system information, and sends the system information and the time information to the DU before the target time is reached, so that the DU determines a sending period and a starting time according to the time information and sends the system information according to the determined sending period and the starting time, wherein the sending period is the period for the DU to send the system information, and the starting time is the starting time for the DU to send the system information.
2. The method of claim 1, wherein the system information determined by the CU is encoded system information.
3. The method of claim 1, wherein the CU sends the determined system information and the time information to the DU, further comprising:
and the CU sends the determined system information, the time information and the system information type to the DU together.
4. The method of claim 1, wherein the CU sends the determined system information and the time information to the DU, comprising:
the CU sends the determined system information and the time information to the DU in a system configuration message.
5. The method of claim 4, wherein the CU determining system information and determining time information for determining a transmission period of the system information comprises:
and the CU determines corresponding system information according to the received terminal application information sent by the DU, and determines time information for determining the sending period of the system information.
6. The method of claim 1, wherein the CU determining system information and determining time information for determining a transmission period of the system information comprises:
after the system information configured to the DU changes, the CU determines the changed system information and determines time information for determining the sending period of the system information;
the CU sends the determined system information and the time information to the DU, and the method comprises the following steps:
and the CU puts the determined system information and the time information into a system reconfiguration message and sends the system reconfiguration message to the DU.
7. The method as claimed in claim 6, wherein the CU, after the system information configured to the DU is changed, further comprises:
and if the CU needs to send the paging message to the terminal, sending the paging message and the system reconfiguration message to the DU together so that the DU sends the paging message to the terminal.
8. A method for transmitting system information, the method comprising:
the distributed unit DU receives system information configured by a centralized unit CU and time information corresponding to the system information, wherein the system information and the time information are sent by the CU before a target time arrives, the target time is determined by the CU according to time delay between the CU and the DU and sending time of the system information, and the sending time of the system information is determined according to a system frame number;
the DU determines a sending period and an initial time according to the time information;
and the DU sends the system information corresponding to the time information according to the determined sending period and the starting time, wherein the sending period is the period for the DU to send the system information, and the starting time is the starting time for the DU to send the system information.
9. The method as claimed in claim 8, wherein the determining the transmission period according to the time information by the DU comprises:
and the DU determines a sending period according to the system information type and the time information in the system configuration message from the CU.
10. The method as claimed in claim 8, wherein the DU receives system information from the CU configuration and time information corresponding to the system information, and comprises:
the DU receives system information configured by the CU and time information corresponding to the system information through a system configuration message; or
And the DU receives system information configured by the CU and time information corresponding to the system information through a system reconfiguration message.
11. The method of claim 8, further comprising:
if the DU can identify a system request message in a terminal mode and the CU has configured system information corresponding to the system request message, the DU sends the system information according to a sending period of the system information corresponding to the system request message;
if the DU can identify a system request message in a terminal mode and the CU does not configure the system information corresponding to the system request message, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message;
and if the DU cannot identify the system request message of the terminal mode, the DU sends the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message.
12. An apparatus for transmitting system information, the apparatus comprising: a processor and a transceiver:
the processor is used for carrying out data transmission through the transceiver and determining system information and time information used for determining the sending period and the sending moment of the system information; determining the sending time of the system information according to a system frame number, determining a target time according to the time delay between a centralized unit CU and a distributed unit DU and the sending time of the system information, and sending the system information and the time information to the DU before the target time is reached, so that the DU determines a sending period and a starting time according to the time information, and sends the system information according to the determined sending period and the starting time, wherein the sending period is the period for the DU to send the system information, and the starting time is the starting time for the DU to send the system information.
13. The apparatus of claim 12, wherein the processor determined system information is encoded system information.
14. The device of claim 12, wherein the processor is further configured to:
and sending the determined system information, the time information and the system information type to the DU together.
15. The device of claim 12, wherein the processor is specifically configured to:
and placing the determined system information and the time information in a system configuration message and sending the system configuration message to the DU.
16. The device of claim 15, wherein the processor is specifically configured to:
and determining corresponding system information according to the received terminal application information sent by the DU, and determining time information for determining the sending period of the system information.
17. The device of claim 12, wherein the processor is specifically configured to:
after the system information configured to the DU changes, determining the changed system information and determining time information for determining a transmission period of the system information; and the determined system information and the time information are placed in a system reconfiguration message and sent to the DU.
18. The device of claim 17, wherein the processor is further configured to:
and after the paging message needs to be sent to the terminal, sending the paging message to the DU together with the system reconfiguration message, so that the DU sends the paging message to the terminal.
19. An apparatus for transmitting system information, the apparatus comprising: a processor and a transceiver:
the processor is used for transmitting data through the transceiver and receiving system information configured by the centralized unit CU and time information corresponding to the system information; determining a sending period and an initial time according to the time information; according to the determined sending period and the starting time, sending the system information corresponding to the time information, wherein the sending period is the period of sending the system information by a Distributed Unit (DU), and the starting time is the starting time of sending the system information by the DU; the system information and the time information are sent by the CU before the target time arrives, the target time is determined by the CU according to the time delay between the CU and the DU and the sending time of the system information, and the sending time of the system information is determined according to the system frame number.
20. The device of claim 19, wherein the processor is specifically configured to:
and determining a sending period according to the system information type and the time information in the system configuration message from the CU.
21. The device of claim 19, wherein the processor is specifically configured to:
receiving system information from CU configuration and time information corresponding to the system information through a system configuration message; or
And receiving system information from CU configuration and time information corresponding to the system information through a system reconfiguration message.
22. The device of claim 19, wherein the processor is further configured to:
if the system request message of the terminal mode can be identified and the CU configures the system information corresponding to the system request message, sending the system information according to the sending period of the system information corresponding to the system request message;
if the system request message of the terminal mode can be identified and the CU does not configure the system information corresponding to the system request message, sending the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message;
and if the system request message of the terminal mode cannot be identified, sending the system request message to the CU so that the CU can determine the system information needing to be configured according to the terminal request message.
23. An apparatus for transmitting system information, the apparatus comprising: at least one processing unit and at least one memory unit, wherein the memory unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of the method of any of claims 1 to 7 or the steps of the method of any of claims 8 to 11.
24. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7 or the steps of the method according to any one of claims 8 to 11.
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| CN113271609A (en) * | 2020-02-14 | 2021-08-17 | 华为技术有限公司 | Communication method and device |
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