A method, terminal and network end for assisting a terminal to acquire system information

Abstract

The application provides a method, a terminal and a network terminal for assisting the terminal to acquire system information. The terminal sends a first message for requesting to acquire first system information to the network terminal. The terminal receives downlink control information, and the downlink control information carries broadcast indication information of system information configured by the network terminal. The terminal judges whether the broadcast indication information of second system information is carried in the downlink control information, and the second system information refers to system information other than the first system information which the terminal needs to acquire. If yes, the second system information is acquired within a system information window of the second system information. If no, the terminal sends a first message for requesting to acquire the second system information to the network terminal. By adding the broadcast indication information of the system information in the downlink control information, the number of times of sending the first message for requesting to acquire random access request when the terminal acquires multiple non-broadcast system information can be saved, the efficiency of acquiring the non-broadcast system information is improved, and time is saved.

Description

Technical Field

[0001] This invention relates to the field of wireless network communication technology, and in particular to a method, terminal, and network terminal for assisting a terminal in acquiring system information. Background Technology

[0002] System information is divided into broadcasting information and non-Broadcasting information. Broadcasting information is information that the network continuously broadcasts and is essential for the User Equipment (UE) to reside in the cell. Non-Broadcasting information, on the other hand, requires the UE to request it from the network. The network sends the non-Broadcasting information only after receiving the UE's request. The UE sends messages through random access. The network configures SI-RequestConfig (system information request configuration information). When configuring an SI-RequestResource for each non-Broadcasting information SI, it includes ra-PreambleStartIndex (random access preamble start index). For SSB#N (SSB stands for Synchronization Signal and PBCH block), the corresponding ra-PreambleStartIndex is ra-PreambleStartIndex+N. The UE then sends different Preamble indices to request the corresponding non-Broadcasting information. Therefore, when a UE needs to obtain multiple notBroadcasting system information entries, it needs to request different notBroadcasting system information entries through multiple PRACH (Physical Random Access Channel) calls. (Reference) Figure 1When the network-side eNodeB sends an SI-RequestConfig to the UE, and the UE wants to obtain two system information entries, SI-1 and SI-2, it first sends a random access request (first message) containing a preamble index X to the eNodeB to request the not-Broadcasting system information SI-1. Then, the eNodeB sends a random access response (second message MSG2) to the UE to complete the random access procedure. Afterwards, when the eNodeB broadcasts SI-1 based on the request, the UE receives SI-1. To obtain SI-2, the UE then sends a random access request (first message) containing a preamble index Y to the eNodeB to request the not-Broadcasting system information SI-2. The eNodeB then sends a random access response (second message MSG2) to the UE to complete the random access procedure. Afterwards, when the eNodeB broadcasts SI-2 based on the request, the UE receives SI-2. This process of obtaining one SI entry at a time results in a slow acquisition speed and a long overall acquisition time. Summary of the Invention

[0003] Based on the above problems, the present invention provides a method, terminal and network terminal for assisting a terminal in obtaining system information, aiming to solve the technical problem of slow acquisition of notBroadcasting system information in the prior art.

[0004] A method for an auxiliary terminal to obtain system information, wherein the system information is non-broadcast system information, including:

[0005] Step A1: The terminal sends a first message to the network requesting to obtain the first system information;

[0006] Step A2: The terminal receives downlink control information, which carries broadcast indication information of the system information configured on the network side.

[0007] Step A3: The terminal determines whether the downlink control information carries broadcast indication information for the second system information. The second system information refers to system information other than the first system information that the terminal needs to obtain.

[0008] If so, proceed to step A4;

[0009] If not, proceed to step A5;

[0010] Step A4: Obtain the second system information within the system information window of the second system information;

[0011] Step A5: The terminal sends a first message to the network to request information about the second system.

[0012] Furthermore, in step A2, the broadcast indication information is located in the reserved bit of the downlink control information.

[0013] Furthermore, in step A2, the broadcast indication information for each system information is divided into a first indication value and a second indication value;

[0014] In step A4, when the broadcast indication information of the second system information is the first indication value, the second system information is obtained within the system information window of the second system information.

[0015] A method for an auxiliary terminal to obtain system information, comprising:

[0016] Step B1: The network sends downlink control information, which carries broadcast indication information of the system information configured by the network.

[0017] Step B2: Broadcast system information on the network end.

[0018] Furthermore, in step B1, the broadcast indication information is located in the reserved bit of the downlink control information.

[0019] Furthermore, in step B1, the network end uses a reserved bit in the downlink control information to set broadcast indication information for a system information.

[0020] Furthermore, in step B1, the process of setting the broadcast indication information on the network side includes:

[0021] Step B11: The network side determines the total number of configured system information and the broadcast setting order;

[0022] Step B12: The network side determines whether the total number of system information bits is greater than the total number of reserved bits in the downlink control information.

[0023] If so, proceed to step B13;

[0024] If not, proceed to step B14;

[0025] Step B13: Set broadcast indication information for a preset number of system information items that are ahead of the broadcast sequence. The preset number is equal to the number of reserved bits.

[0026] Step B14: Set broadcast indication information for all system information.

[0027] Furthermore, in step B1, the broadcast indication information is divided into a first indication value or a second indication value. When system information is requested, the network end sets the broadcast indication information of the system information to the first indication value; when system information is not requested, the network end sets the broadcast indication information of the system information to the second indication value.

[0028] A terminal for the aforementioned method of an auxiliary terminal for obtaining system information.

[0029] A network terminal for the aforementioned method of an auxiliary terminal to obtain system information.

[0030] The beneficial technical effect of the present invention is that by adding broadcast indication information of system information to the downlink control information, the number of times the terminal sends the first message of random access request when obtaining multiple non-broadcast system information can be reduced, thereby improving the efficiency of obtaining non-broadcast system information and saving time. Attached Figure Description

[0031] Figure 1 This refers to the process by which a terminal acquires information from a non-broadcast system in existing technologies.

[0032] Figure 1-3 6 is a flowchart of the steps of a method for an auxiliary terminal to obtain system information according to the present invention;

[0033] Figure 4-5 This is a schematic diagram illustrating the process of obtaining system information using a method for obtaining system information via an auxiliary terminal according to the present invention. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0037] See Figure 2 This invention provides a method for an auxiliary terminal to obtain system information, wherein the system information is non-broadcast system information, including:

[0038] Step A1: The terminal sends a first message to the network requesting to obtain the first system information;

[0039] Step A2: The terminal receives downlink control information, which carries broadcast indication information of the system information configured on the network side.

[0040] Step A3: The terminal determines whether the downlink control information carries broadcast indication information for the second system information. The second system information refers to system information other than the first system information that the terminal needs to obtain.

[0041] If so, proceed to step A4;

[0042] If not, proceed to step A5;

[0043] Step A4: Obtain the second system information within the system information window of the second system information;

[0044] Step A5: The terminal sends a first message to the network to request information about the second system.

[0045] Specifically, in step A2, when the terminal detects downlink control information (DCI) scrambled with SI-RNTI (System Information – Radio Network Temporary Identifier), it also detects broadcast indication information. This indication information is used to indicate which non-Broadcasting system messages will be broadcast after this system message. If the system information broadcast later includes the second system information that the terminal needs, the terminal directly receives the second system information in the system information window (SI window) of the required second system information. This eliminates the need to send a first message of random access request for each second system information to request the second system information, thus saving the number of times the terminal sends the first message of random access request when acquiring multiple non-broadcast system information, reducing the random access process, improving the efficiency of acquiring non-broadcast system information, and saving time.

[0046] Furthermore, in step A2, the broadcast indication information is located in the reserved bit of the downlink control information.

[0047] Specifically, the broadcast indication information is located in the reserved field of DCI format 1_0.

[0048] One of the reserved bits is used to set a broadcast indication message for system information.

[0049] Furthermore, in step A2, the broadcast indication information for each system information is divided into a first indication value and a second indication value;

[0050] In step A4, when the broadcast indication information of the second system information is the first indication value, the second system information is obtained within the system information window of the second system information.

[0051] When the broadcast indication information is the first indication value, it indicates that the system information has been requested by other terminals and / or the terminal itself (including the terminal itself if the first system information it requested also has a broadcast indication information), such as sending a first message of random access request to obtain system information. The network end arranges the broadcast of system information based on the first message sent.

[0052] Preferably, the first indicator value is 1.

[0053] When the broadcast indication information is the second indication value, it indicates that the system information has not been requested by other terminals or the terminal itself before, such as by not sending a first message requesting random access to obtain the system information. Non-broadcast system information can only be received upon request; therefore, when the broadcast indication information is the second indication value, it means that the network end will not broadcast this time.

[0054] Preferably, the second indicator value is 0.

[0055] join Figure 4 Suppose a terminal needs to request the network to broadcast four system messages: SI-0, SI-1, SI-2, and SI-3, and the network broadcasts them in the order SI-0, SI-1, SI-2, and SI-3. In step A1, the terminal first sends a first message requesting the network to broadcast SI-3. The terminal obtains the DCI currently scheduling SI-3. In the reserved bits of the DCI, the Reserved bit indicates the total number of reserved bits used by the indicated information. The value of bit #3 is 1 (the first indication value), indicating that the system message SI-3 is being received in the current time period t1 (SI window of SI-3). After SI-3, the system messages are SI-0, SI-1, and SI-2. SI-0, SI-1, and SI-2 are indicated by the reserved bits bit #0, bit #1, and bit #2, respectively. The values ​​of bit #0 and bit #2 have been set to 1, indicating that other terminals have already requested SI-0 and SI-2. The terminal can directly receive SI-0 or SI-2 in the corresponding SI window of SI-0 and SI-2. A value of 0 for bit#1 indicates that it has not been requested, and the network will not broadcast it. The terminal still needs to send a random access request message requesting SI-1. Figure 5 This indicates that the random access request process for SI-0 and SI-2 can be omitted. This helps the terminal quickly obtain the necessary system information.

[0056] See Figure 3 The present invention also provides a method for assisting a terminal in obtaining system information, comprising:

[0057] Step B1: The network sends downlink control information, which carries broadcast indication information of the system information configured by the network.

[0058] Step B2: Broadcast system information on the network end.

[0059] Specifically, upon receiving the first message, the network sends a second message (MSG) of random access response to the terminal, and transmits downlink control information scrambled with SI-RNTI. Simultaneously, broadcast indication information of system information is added to the downlink control information.

[0060] Furthermore, in step B1, the broadcast indication information is located in the reserved bit of the downlink control information.

[0061] Specifically, the indication information is located in the reserved field of DCI format 1_0.

[0062] Furthermore, in step B1, the network end uses a reserved bit in the downlink control information to set broadcast indication information for a system information.

[0063] A reserved bit in the downlink control information is used to set an indication of system information.

[0064] See Figure 6 Furthermore, in step B1, the process of setting the broadcast indication information on the network side includes:

[0065] Step B11: The network side determines the total number of configured system information and the broadcast setting order;

[0066] Step B12: The network side determines whether the total number of system information bits is greater than the total number of reserved bits in the downlink control information.

[0067] If so, proceed to step B13;

[0068] If not, proceed to step B14;

[0069] Step B13: Set broadcast indication information for a preset number of system information items that are ahead of the broadcast setting order. The preset number is equal to the total number of reserved bits.

[0070] Step B14: Set broadcast indication information for all system information.

[0071] In steps B13 and B14, reserved bits are assigned to each system message in the order they are set for broadcast. One reserved bit is used to set the indication information for each system message. Broadcast indication information is set sequentially in the reserved bits, and the order in which the broadcast indication information is set in the reserved bits is the same as the broadcast setting order of the system messages.

[0072] For example, if there are a total of 8 reserved bits, and the network end is configured with 5 system information entries, with the broadcast configuration order being SI-0, SI-1, SI-2, SI-3, and SI-4, and the total number of system information entries is less than the number of reserved bits, then all five system information entries will be configured with broadcast indication information. The 5 reserved bits will be occupied by the indication information, and the occupied reserved bits will be in the following order: bit#0, bit#1, bit#2, bit#3, bit#4, bit#5, bit#6, and bit#7. Therefore, bit#0 is used to set the broadcast indication information for SI-0, bit#1 for SI-1, bit#2 for SI-2, bit#3 for SI-3, and bit#4 for SI-4.

[0073] For example, assuming there are 8 reserved bits, the order of the reserved bits is bit#0, bit#1, bit#2, bit#3, bit#4, bit#5, bit#6, bit#7. Assuming the network is configured with 10 System Information Sequences (SIs), and the broadcast configuration order is SI-0, SI-1, SI-2, SI-3, SI-4, SI-5, SI-6, SI-7, SI-8, SI-9, then the first 8 system information sequences (SI-0, SI-1, SI-2, SI-3, SI-4, SI-5, SI-6, SI-7) can be configured with indication information, and all reserved bits are occupied. Then, bit #0 is used to set the indication information of SI-0, bit #1 is used to set the indication information of SI-1, bit #2 is used to set the indication information of SI-2, bit #3 is used to set the indication information of SI-3, bit #4 is used to set the indication information of SI-4, bit #5 is used to set the indication information of SI-5, bit #6 is used to set the indication information of SI-6, and bit #7 is used to set the indication information of SI-7.

[0074] 5G NR defines two frequency band ranges, FR1 and FR2. FR1 represents the low-frequency band, and FR2 represents the millimeter-wave high-frequency band. For FR1, there are 17 reserved bits in DCI format 1-0, and for FR2, there are 15 reserved bits whose purpose is not yet defined. Therefore, they can be used to set indication information. Of course, the total number of reserved bits can also be other numbers.

[0075] In step B13, the number of reserved bits for the broadcast indication information is set to the total number of reserved bits in the downlink control information.

[0076] In step B14, the number of reserved bits used to set the broadcast indication information is equal to the total number of system information bits. The remaining bits are still reserved bits for DCI format 1_0.

[0077] For example, when the total number of system information bits is less than or equal to the total number of reserved bits, the field of SI-RNTI DCI format 1-0 can be modified as follows:

[0078] -notBroadCasting Indication bits-X bits, X is the number ofnotBroadcasting SI;

[0079] -Reserved bits - 17-X bits.....; other wise 15-X bits; Further, in step B1, the indication information is divided into a first indication value or a second indication value. When system information is requested, the network end sets the indication information of the system information to the first indication value; when system information is not requested, the network end sets the indication information of the system information to the second indication value.

[0080] Specifically, the first indicator value is 1. Specifically, the second indicator value is 0.

[0081] The present invention also provides a terminal for executing a method for an auxiliary terminal to obtain system information as described above, including executing:

[0082] The first message that sends a request to the network to obtain the first system information;

[0083] Receive downlink control information, which carries broadcast indication information of the system configuration at the network end;

[0084] Determine whether the downlink control information carries broadcast indication information for the second system information. The second system information refers to system information other than the first system information that the terminal needs to obtain.

[0085] If the downlink control information carries a broadcast indication message for the second system information, the second system information is obtained within the system information window of the second system information.

[0086] If the downlink control information does not carry broadcast indication information of the second system, a first message requesting to obtain the second system information is sent to the network.

[0087] In this invention, the terminal can be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The user terminal can be widely used in various scenarios, such as device-to-device, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, the Internet of Things (IoT), virtual reality, augmented reality, autonomous driving, telemedicine, mobile phones, tablets, smart homes, wearable devices, drones, etc. The user terminal can be mobile or located in a fixed position.

[0088] The present invention also provides a network terminal for executing the aforementioned method for an auxiliary terminal to obtain system information, including executing:

[0089] Send downlink control information, which carries broadcast indication information of the system configuration at the network end;

[0090] Broadcast system information.

[0091] In this invention, the network terminal can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a macro base station, a micro base station, an indoor station, a relay node, or a 6G network. th It can be a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. It can also be a module or unit that performs some functions of a base station, such as a central unit (CU).

[0092] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for an auxiliary terminal to acquire system information, wherein the system information is non-broadcast system information, characterized in that, include: Step A1: The terminal sends a first message to the network requesting to obtain the first system information; Step A2: The terminal receives downlink control information, which carries broadcast indication information of the system information configured by the network terminal; Step A3: The terminal determines whether the downlink control information carries broadcast indication information of second system information, where the second system information refers to the system information other than the first system information that the terminal needs to obtain. If so, proceed to step A4; If not, proceed to step A5; Step A4: Obtain the second system information within the system information window of the second system information; Step A5: The terminal sends a first message to the network terminal requesting to obtain the second system information; In step A2, the broadcast indication information is located in a reserved bit of the downlink control information, and the network terminal uses a reserved bit of the downlink control information to set the broadcast indication information for a system information. Broadcast indication information is set in reserved bits in sequence, and the order in which the broadcast indication information is set in reserved bits is the same as the broadcast setting order of system information.

2. The method for an auxiliary terminal to acquire system information as described in claim 1, characterized in that, In step A2, the broadcast indication information for each system information is divided into a first indication value and a second indication value; In step A4, when the broadcast indication information of the second system information is the first indication value, the second system information is obtained within the system information window of the second system information.

3. A method for assisting a terminal in acquiring system information, characterized in that, include: Step B1: The network end sends downlink control information, which carries broadcast indication information of the system information configured by the network end; Step B2: The network terminal broadcasts the system information; In step B1, the broadcast indication information is located in the reserved bit of the downlink control information; In step B1, the network terminal uses a reserved bit in the downlink control information to set the broadcast indication information for a system information; Broadcast indication information is set in reserved bits in sequence, and the order in which the broadcast indication information is set in reserved bits is the same as the broadcast setting order of system information.

4. The method for an auxiliary terminal to acquire system information as described in claim 3, characterized in that, In step B1, the process of the network end setting the broadcast indication information includes: Step B11: The network terminal determines the total number of configured system information and the broadcast setting order; Step B12, the network terminal determines whether the total number of system information bits is greater than the total number of reserved bits in the downlink control information: If so, proceed to step B13; If not, proceed to step B14; Step B13: Set the broadcast indication information for a preset number of system information items that are placed before the broadcast sequence, where the preset number is equal to the number of reserved bits; Step B14: Set the broadcast indication information for all the system information.

5. The method for an auxiliary terminal to acquire system information as described in claim 3, characterized in that, In step B1, the broadcast indication information is divided into a first indication value or a second indication value. When the system information is requested, the network terminal sets the broadcast indication information of the system information to the first indication value; when the system information is not requested, the network terminal sets the broadcast indication information of the system information to the second indication value.

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