WO2013189300A1 - Method and device for transmitting system broadcast information - Google Patents

Abstract

Disclosed are a method and a device for transmitting system broadcast information, relating to the field of wireless communication, and used for solving the problem about how to transmit system broadcast information in a small-bandwidth system. In the present invention, a network side selects one or more frequency points used for transmitting system broadcast information, and transmits the system broadcast information on the selected frequency point. It can be seen that this solution solves the problem about how to transmit system broadcast information in a small-bandwidth system.

Description

 Method and device for transmitting system broadcast information This application claims priority to Chinese patent application filed on June 21, 2012 by the Chinese Patent Office, application number 201210211711 .4, and the invention titled "System Broadcast Information Transmission Method and Equipment" The entire contents of which are incorporated herein by reference.

Technical field

 The present invention relates to the field of wireless communications, and in particular, to a method and device for transmitting system broadcast information. Background technique

 IoT technology is in the ascendant, and it needs to support Machine Type Communications (MTC) in third-generation mobile communication systems and its Long Term Evolution (LTE).

 Machine-to-machine communication (M2M) is a new communication concept. Its purpose is to combine many different types of communication technologies, such as: machine-to-machine communication, machine control communication, human-computer interaction communication, Mobile internet communication to promote social production and lifestyle development. It is expected that the human-to-human communication business may only account for 1/3 of the entire user equipment market, and a larger amount of communication is the inter-machine (small bandwidth system) communication service.

 Current mobile communication networks are designed for communication between people, such as: determination of network capacity. If you want to use mobile communication networks to support small-bandwidth system communication, you need to optimize the mechanism of the mobile communication system according to the characteristics of small-bandwidth system communication, so that when traditional human-to-human communication is not affected or less affected. , better realize small bandwidth system communication.

 Some features that may be present in the currently recognized MTC are: MTC user equipment has low mobility; the time for data transmission between the MTC user equipment and the network side is controllable, that is, the MTC user equipment can only be performed within a specified period of time of the network. Access: The data transmission performed by the MTC user equipment and the network side does not require real-time data transmission, that is, it has time tolerance; the MTC user equipment has limited energy and requires extremely low power consumption; MTC user equipment and network side Only small amounts of information are transmitted between the two; MTC user devices can be managed in groups; and so on.

 An actual MTC user equipment may have one or more of the characteristics described above.

 In order to support a large number of MTC user equipments for data transmission at the same time, one solution is to configure a plurality of small bandwidth frequency points in the data domain of the working bandwidth of the LTE system, and configure a part of the MTC user equipment for data transmission in each small bandwidth frequency point, for example, Figure 1 shows.

 The main purpose of the system broadcast of the Time Division Long Term Evolution (TD-LTE) system is to ensure that the User Equipment (UE) can normally camp on the cell that can serve it and provide the necessary common channel for it to access the network. Information and mobility management to ensure that it is idle.

According to the importance of the content of the system broadcast information and the transmission mode, the system broadcast information is divided into a Master Information Block (MIB) and a System Information Block (SIB). The MIB mainly carries the system frame number, the cell bandwidth, and the physical hybrid automatic request retransmission indicator channel (Physical HARQ Indication Channel, PHICH M message, etc. The SIB is classified according to its content, using SIB1-SIB12 ( SIB type 1 is SIB1, and so on. For example, SIB4 carries the information of the same-frequency cell, and SIB5 carries the information of the inter-frequency cell. The more information the UE needs to obtain as soon as possible, the information is placed in the previous system information block. For example, SIB1 carries information required for UE cell camping and scheduling information for other system information blocks.

 The MIB transmission period is fixed at 40ms, and the same content is retransmitted every 10ms in the period. The transmission of the MIB is fixed in subframe 0 of each wireless frame, and the first transmission starts from the radio frame of SFN mod 4 = 0, and the SFN is the system frame number, as shown in Fig. 2.

 The Physical Broadcast Channel (PBCH) is used to carry the MIB information, and the PBCH is in the first 4 orthogonal frequency division multiplexing of the 2nd slot (slot) of the 0th subframe of each radio frame (Orthogonal Frequency Division). Multiplexing, OFDM) symbols are transmitted over the entire 72-subcarrier bandwidth of the system bandwidth. The time-frequency position of the PBCH is shown in Figure 3.

 The SIB1 transmission period is fixed at 80ms, and the same content is retransmitted every 20ms in the period. The transmission of SIB1 is fixed at the subframe 5 of the even-numbered radio frame, and the first transmission starts from the radio frame of SFN mod 8 = 0, as shown in Fig. 4.

 In addition to SIB1, other SIBs are transmitted via the Scheduling Information (SI). Multiple SIBs with the same scheduling period can be placed in an SI message. SI messages are transmitted in a dynamically scheduled manner within a periodic time window, the system message window (Si-windows). Each SI message is associated with a transmission cycle. All SI messages are transmitted using Si-window of the same width. The Si-windows of different SI messages do not overlap each other. The width of the Si-window is configured by SIB1. The SI message corresponding to the UE in the window is allowed to be excluded except the Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframe, the Time Division Duplex (TDD) uplink subframe, and the SIB1 transmission subframe. Scheduling transmissions in any sub-frame. The transmission of the SIB1 and SI messages is performed by a Physical Downlink Control Channel (PDCCH) carrying a System Information Radio Network Temporary Identifier (SI-RNTI).

 In order to ensure the consistency between the UE and the network for understanding the broadcast message, the LTE system introduces the concept of the system broadcast information modification period. The content of the system broadcast information in the modification period cannot be changed, and the system broadcast information can only be modified from the next system. The start time of the modification period of the broadcast information starts, that is, when the UE knows that the system broadcast information is changed, the new system broadcast information is monitored at the start of the next modification period. See Figure 5 for the specific process.

 The notification method for supporting the change of broadcast information of two systems in the LTE system:

 First, the network side uses a paging message to notify the idle (IDLE) state and the connected state of the UE system broadcast information change,

The UE starts to listen for new system broadcast information in the next modification period;

Second, the system information change tag (systemlnfoValUETag) information is carried in the SIB1. If the change tag read by the UE is different from the previously stored, the system broadcast information needs to be re-read. The broadcast information is valid for 3 hours, after which the UE needs to re-read the system broadcast information. In summary, the transmission of MIB information in the system broadcast information in the existing LTE standard has a fixed time-frequency resource, and the SIB1 information is configured with a fixed transmission period, but the occupied frequency resource is dynamically scheduled within the downlink working bandwidth. The other SIB information except SIB1 is transmitted in a dynamic scheduling manner in a periodic time window (Si-windows), so the time-frequency resources are not fixed.

 Since the LTE UE in the existing standard has a data receiving capability that is not less than the operating bandwidth of the system, regardless of the SIB information being scheduled at any frequency location within the system bandwidth, the existing UE does not have the difficulty of receiving, but the bandwidth of the LTE system. When multiple small bandwidth frequency points are configured in the data domain, the UE using the small bandwidth frequency cannot receive data scheduled to be outside its receiving bandwidth. Therefore, the existing mechanism may cause the user equipment on the small bandwidth frequency to fail to receive. System broadcast

Summary of the invention

 Embodiments of the present invention provide a method and a device for transmitting system broadcast information, which are used to solve the problem of how to transmit system broadcast information in a small bandwidth system.

 The method for transmitting system broadcast information provided by the embodiment of the present invention is applied to a small bandwidth system in which a plurality of frequency points are configured in a data domain of a system bandwidth, and a part of user equipments are configured to perform data transmission in each frequency point. The method includes:

 The network side selects one or more frequency points used by the transmission system to broadcast information;

 The network side transmits system broadcast information at selected frequency points.

 The method for transmitting system broadcast information provided by the embodiment of the present invention is applied to a small bandwidth system in which a plurality of frequency points are configured in a data domain of a system bandwidth, and a part of user equipments are configured to perform data transmission in each frequency point. The method includes:

 The user equipment determines one or more frequency points used by the network side transmission system to broadcast information;

 The user equipment receives system broadcast information at a determined frequency point.

 A base station provided by an embodiment of the present invention includes:

 a frequency point selection unit, configured to select one or more frequency points used by the transmission system to broadcast information;

 An information transmission unit, configured to transmit system broadcast information on the selected frequency point.

 A user equipment provided by the embodiment of the present invention includes:

 a frequency point determining unit, configured to determine one or more frequency points used by the network side transmission system broadcast information; and an information receiving unit, configured to receive system broadcast information at the determined frequency point.

In the technical solution provided by the embodiment of the present invention, in a small bandwidth system in which a plurality of frequency points are configured in a data domain of a system bandwidth and a part of user equipments are configured to perform data transmission in each frequency point, the network side selects a transmission system broadcast information. One or more frequency points used, and transmitting system broadcast information at the selected frequency point, and the user equipment determines the network side transmission The system broadcasts information at a determined frequency point by one or more frequency points used by the system to broadcast information. It can be seen that the technical solution provided by the embodiment of the present invention solves the problem of how to transmit system broadcast information in a small bandwidth system. DRAWINGS

 1 is a schematic diagram of frequency point configuration in a small bandwidth system in the prior art;

 2 is a schematic diagram of a MIB transmission cycle in the prior art;

 3 is a schematic diagram of a time-frequency position of a PBCH in the prior art;

 4 is a schematic diagram of a SIB1 transmission diagram in the prior art;

 FIG. 5 is a schematic diagram of a system message change notification in the prior art;

 FIG. 6 is a schematic flowchart of a method according to an embodiment of the present disclosure;

 FIG. 7 is a schematic flowchart of another method according to an embodiment of the present disclosure;

 FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

 FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description

 In order to solve the problem of how to transmit system broadcast information in a small bandwidth system, an embodiment of the present invention provides a method for transmitting system broadcast information, which can be applied to multiple frequency points in a data domain of a system bandwidth, and at each frequency point. A small bandwidth system in which some user equipments are configured for data transmission.

 Referring to FIG. 6, a method for transmitting system broadcast information on a network side according to an embodiment of the present invention includes the following steps:

 Step 60: The network side selects one or more frequency points used by the transmission system to broadcast information;

 Step 61: The network side transmits system broadcast information on the selected frequency point.

 Further, the network side selects one or more frequency points used by the transmission system to broadcast the information, and transmits the system broadcast information at the selected frequency point, which specifically includes one of the following four methods:

 Method 1, the network side selects a specific frequency point as a frequency point used by the transmission system to broadcast information; transmits a main information block (MIB) and a system information block (SIB) on the selected specific frequency point;

 In the first method, for the user equipment whose data transmission frequency is not a specific frequency point, in order to ensure that the user equipment can correctly receive data, the network side hops to the selected specific frequency point at the user equipment to read the updated system broadcast information. After a period of time T, the data transmission of the user equipment is scheduled to be stopped on the data transmission frequency of the user equipment, and the user equipment is scheduled to be scheduled at the data transmission frequency after the T time; or

After the user equipment hops to the selected specific frequency point to read the updated system broadcast information, and before receiving the read signaling sent by the user equipment, the network side stops scheduling on the data transmission frequency point of the user equipment. Data transmission of the user equipment, and after receiving the read signaling sent by the user equipment, starting to schedule the data transmission frequency Household equipment.

 Here, the high-level server can notify the information of the T to the base station transmitting the system broadcast information through the Iub port.

 The read signaling may be an acknowledgement (ACK) signaling sent by the user equipment to the data transmission frequency after jumping from the specific frequency point to the data transmission frequency point.

 Method 2, the network side selects each frequency point as the frequency point used by the transmission system to broadcast information; transmits the MIB and the SIB on each selected frequency point;

 Method 3, the network side selects a specific frequency point as the frequency point used by the transmission MIB, and selects each frequency point as the frequency point used for transmitting the SIB; transmits the MIB at the selected specific frequency point, and selects each frequency The SIB is transmitted at the point; method 4, the network side selects a specific frequency point as the frequency point used by the transmission MIB, and determines the frequency point used for transmitting the SIB according to the set first frequency hopping rule; at the selected specific frequency point The MIB is transmitted, and the SIB is transmitted at a frequency used by the determined transmission SIB.

 When the method 4 is used, the first frequency hopping rule may be: determining the frequency of the SIB corresponding to the SFN included in the transmitted MIB according to the binding relationship between the preset system frame number (SFN) and the frequency point of the SIB. Point, the determined frequency point is used as the frequency point used for transmitting the SIB. The following example illustrates the binding relationship between the SFN and the SIB:

 Example 1: The correspondence between the frequency points at which the SFN and the SIB are located may be a correspondence relationship, or may be a correspondence relationship between the SFN and the frequency point whose sequence number is odd/even;

 Example 2: After performing a certain operation on the SFN (for example, modulo operation), the obtained value is used as the serial number of the frequency point where the SIB is located.

 When the first method, the third method or the fourth method is used, the specific frequency point selected by the network side is the primary frequency point, and the primary frequency point is the frequency point of the MIB transmitting the long-term evolution LTE system; or the specific frequency point is the user equipment. The initial access frequency point; or the specific frequency point is a small bandwidth frequency point located in the center of the system bandwidth.

 Further, the method for the network side to transmit the MIB at the selected specific frequency point may be as follows:

 The network side transmits the MIB of the LTE system as the MIB of the small bandwidth system at the selected specific frequency point; or, the network side transmits the MIB of the LTE system at the selected specific frequency point, and extends the information bits of the MIB to carry the small bandwidth system. MIB.

 Further, before transmitting the SIB, the network side schedules the user equipment to receive the SIB by transmitting the downlink control channel (PDCCH) on the frequency point where the SIB is located, and the downlink control channel at different frequency points uses the same radio network temporary identifier (RNTI). Or different RNTI scrambling.

 Preferably, the network side may send at least one of the frequency point used by the transmission system broadcast information and the first frequency hopping rule to the user equipment by using signaling before transmitting the system broadcast information. The signaling may specifically be a transmitted MIB.

 Of course, the network side and the user equipment may also pre-agreed the frequency point, the first frequency hopping rule, and the like used to transmit the system broadcast information.

Referring to FIG. 7, a method for transmitting system broadcast information on a user equipment side according to an embodiment of the present invention includes Next steps:

 Step 70: The user equipment determines one or more frequency points used by the network side transmission system broadcast information. Step 71: The user equipment receives the system broadcast information at the determined frequency point.

 In step 70, the user equipment determines one or more frequency points used by the network side transmission system broadcast information, and receives system broadcast information at the determined frequency point. The specific implementation may use one of the following four methods:

 Method 1, the user equipment determines a specific frequency point as a frequency point used by the transmission system to broadcast information; and receives the MIB and the SIB at the determined specific frequency point;

 In the first method, for the user equipment in the connected state where the data transmission frequency is not a specific frequency point, the user equipment hops to the data of the user equipment after hopping to the specific frequency point to read the updated system broadcast information. Transmission frequency point; or,

 After the user equipment hops to a specific frequency to read the updated system broadcast information and sends the read signaling, the user equipment hops to the data transmission frequency of the user equipment.

 Here, the read signaling may be ACK signaling sent by the user equipment at the data transmission frequency.

 In the second method, the user equipment determines the frequency point used by each frequency point as the broadcast information of the transmission system; if the user equipment is in the connected state, receives the MIB and the SIB at a determined frequency point; if the user equipment is in the idle state, Receiving the MIB and the SIB only at a specific frequency point; receiving the MIB and the SIB at a determined frequency point, specifically: receiving the MIB and the SIB at the data transmission frequency of the user equipment;

 In the third method, the user equipment determines a specific frequency point as the frequency point used by the transmission MIB, and determines each frequency point as the frequency point used for transmitting the SIB; if the user equipment is in the connected state, at the determined specific frequency point Receiving the MIB, receiving the SIB at a frequency point used by the determined transmission SIB; if the user equipment is in an idle state, receiving the MIB and the SIB only at a specific frequency point; at a frequency point used by the determined transmission SIB The receiving the SIB may be: receiving the SIB on the data transmission frequency of the user equipment.

 In a fourth method, the user equipment determines a specific frequency point of the multiple frequency points as a frequency point used by the transmission MIB, and determines a frequency point used by the transmission SIB in the multiple frequency points according to the set first frequency hopping rule; The MIB is received at a specific frequency, and the SIB is received at a frequency used by the determined transmission SIB.

 When the method 4 is used, the first frequency hopping rule may be: determining, according to a binding relationship between the preset system frame number SFN and the frequency point of the SIB, determining the frequency of the SIB corresponding to the SFN in the received MIB. This frequency point is used as the frequency point used for transmitting the SIB.

 When the method 1 , method 3 or method 4 is used, the specific frequency point may be a primary frequency point, and the primary frequency point is a frequency point of the MIB transmitting the long-term evolution LTE system; or the specific frequency point is an initial access of the user equipment. The frequency point; or the specific frequency point is a small bandwidth frequency point located in the center of the system bandwidth.

 Further, the method for the user equipment to receive the MIB at a specific frequency point may be as follows:

The user equipment receives the MIB of the LTE system at a specific frequency point, and uses the MIB as the MIB of the small bandwidth system; or By,

 The user equipment receives the MIB of the LTE system at a specific frequency point, and uses the information carried by the extended information bits of the MIB as the MIB of the small bandwidth system.

 Further, before receiving the SIB, the user equipment receives the scheduling information sent by the network side through the downlink control channel at the frequency point at which the SIB is transmitted, and uses the same RNTI or different RNTI for the downlink control channel at different frequency points. Scrambled. The system broadcast information is then received on the time resource indicated by the scheduling information.

 Preferably, before receiving the system broadcast information, the user equipment may receive at least one of a frequency point used by the transmission system broadcast information transmitted by the network side and a first frequency hopping rule.

 Further, the signaling may be a transmitted MIB.

 Of course, the network side and the user equipment may also pre-agreed the frequency point, the first frequency hopping rule, and the like used to transmit the system broadcast information. The user equipment determines, according to an agreement with the network side, information about a frequency point and/or a first frequency hopping rule that the network side transmits to the system broadcast message of the user equipment.

 In the present invention, the time domain resources used by the transmission system to broadcast information can be determined according to the prior art. For example, in a fixed time domain resource transmission MIB, SIB1 is transmitted according to a fixed time period, and other SIB information except SIB1 is transmitted in a dynamic scheduling manner within a period corresponding to the periodic Si-windows.

 Embodiment 1:

 Step 1: The base station selects a specific frequency point as a frequency point used by the transmission system to broadcast information; transmits the MIB and the SIB at the selected specific frequency point;

 Step 2: The user equipment determines a frequency point used by the transmission system to broadcast the information at a specific frequency point; and receives the MIB and the SIB at the determined specific frequency point.

 Embodiment 2:

 Step 1: The base station selects each frequency point as a frequency point used by the transmission system to broadcast information; transmits the MIB and the SIB at each selected frequency point;

 Step 2: The user equipment determines that each frequency point is a frequency point used by the transmission system to broadcast information. If the user equipment is in a connected state, receiving the MIB and the SIB at a determined frequency point, for example, the data transmission frequency of the user equipment. If the user equipment is in the idle state, the MIB and SIB are only received at a specific frequency.

 Embodiment 3:

 Step 1: The base station selects a specific frequency point as the frequency point used by the transmission MIB, and selects each frequency point as the frequency point used for transmitting the SIB; transmits the MIB at the selected specific frequency point, at each selected frequency point. Transmitting the SIB; Step 2: The user equipment determines that the specific frequency point is the frequency used by the transmission MIB, and determines that each frequency point is transmitted.

The frequency point used by the SIB; if the user equipment is in the connected state, receiving the MIB at the determined specific frequency point, and receiving the SIB at a frequency point used by the determined transmission SIB, for example, the data transmission frequency of the user equipment; If the user equipment is in an idle state, the MIB and the SIB are only received at a specific frequency point. Embodiment 4:

 Step 1: The base station selects a specific frequency point as a frequency point used by the transmission MIB, and determines a frequency point used for transmitting the SIB according to the set first frequency hopping rule; transmits the MIB at the selected specific frequency point, and determines the transmission. The SIB is transmitted at the frequency used by the SIB.

 Step 2: The user equipment determines a specific frequency point as a frequency point used by the transmission MIB, and determines a frequency point used by the transmission SIB according to the set first frequency hopping rule; receives the MIB at a specific frequency point, and determines the transmission SIB. The SIB is received at the frequency used.

 Referring to FIG. 8, an embodiment of the present invention provides a base station, where the base station includes:

 a frequency selection unit 80, configured to select one or more frequency points used by the transmission system to broadcast information;

 The information transmission unit 81 is configured to transmit system broadcast information on the selected frequency point.

 The frequency selection unit 80 may be a CPU (General Purpose Processor), a DSP (Digital Signal Processor) or an FPGA (Programmable Logic Gate Array); the information transmission unit 81 may be shared by the RF channel and the antenna. The composition of the device is implemented.

 Further, the frequency selection unit 80 is configured to: select a specific frequency point as a frequency point used by the transmission system broadcast information; and the information transmission unit 81 is configured to: transmit the main information block MIB on the selected specific frequency point. And the system information block SIB; or,

 The frequency selection unit 80 is configured to: select each frequency point as a frequency point used by the transmission system broadcast information; the information transmission unit 81 is configured to: transmit the MIB and the SIB on each selected frequency point; or

 The frequency selection unit 80 is configured to: select a specific frequency point as a frequency point used by the transmission MIB, and select each frequency point as a frequency point used for transmitting the SIB; the information transmission unit 81 is configured to: select Transmit the MIB at a specific frequency, and transmit the SIB at each selected frequency; or,

 The frequency selection unit 80 is configured to: select a specific frequency point as a frequency point used by the transmission MIB, and determine a frequency point used by the transmission SIB according to the set first frequency hopping rule; The: transmitting the MIB at the selected specific frequency point, and transmitting the SIB at the frequency used by the determined transmission SIB.

 Further, the base station further includes:

 The transmission scheduling unit 82 is configured to select, at the frequency point selection unit, a specific frequency point as a frequency point used by the transmission system broadcast information, where the information transmission unit transmits the MIB and the SIB at the selected specific frequency point, The user equipment whose transmission frequency is not a specific frequency point stops scheduling at the data transmission frequency point of the user equipment within a period of time T after the user equipment hops to the selected specific frequency point to read the updated system broadcast information. Data transmission of the user equipment, and starting the user equipment at the data transmission frequency after the T time; or

After the user equipment hops to the selected specific frequency point to read the updated system broadcast information, before receiving the read signaling sent by the user equipment, stopping scheduling the user on the data transmission frequency point of the user equipment Data transmission of the device, and after receiving the read signaling sent by the user equipment, starting to schedule the user setting at the data transmission frequency Ready.

 The transmission scheduling unit 82 can also be a CPU (General Purpose Processor), a DSP (Digital Signal Processor) or an FPGA (Programmable Logic Gate Array).

 Further, the information transmission unit 81 is further configured to:

 Receiving the information of the T sent by the high-level server through the Iub interface.

 Further, the read signaling is an acknowledgement ACK signaling sent by the user equipment on a data transmission frequency point.

 Further, the first frequency hopping rule is: determining, according to a binding relationship between a preset system frame number SFN and a frequency point of the SIB, determining a frequency point of the SIB corresponding to the SFN in the transmitted MIB, and determining the frequency point. As the frequency point used to transmit the SIB.

 Further, the specific frequency point is a primary frequency point, and the primary frequency point is a frequency point of the MIB transmitting the long-term evolution LTE system; or the specific frequency point is an initial access frequency point of the user equipment; or the specific frequency The point is a small bandwidth frequency located in the center of the system bandwidth.

 Further, the information transmission unit 81 is configured to: transmit the MIB at the selected specific frequency point according to the following method: transmit the MIB of the LTE system as the MIB of the small bandwidth system at the selected specific frequency point; or, select The MIB of the LTE system is transmitted at a specific frequency point, and the information bits of the MIB are extended to carry the MIB of the small bandwidth system.

 Further, the information transmission unit 81 is further configured to:

 Before transmitting the SIB, the user equipment is scheduled to receive the SIB by transmitting the downlink control channel at the frequency point where the SIB is located, and the downlink control channel at different frequency points is scrambled by the same radio network temporary identifier RNTI or different RNTI.

 Further, the information transmission unit 81 is further configured to:

 Before transmitting the system broadcast information, at least one of the frequency point used by the transmission system broadcast information and the first frequency hopping rule is transmitted to the user equipment by signaling.

 Referring to FIG. 9, an embodiment of the present invention provides a user equipment, where the user equipment includes:

 The frequency point determining unit 90 is configured to determine one or more frequency points used by the network side transmission system broadcast information, and the information receiving unit 91 is configured to receive system broadcast information at the determined frequency point.

 The frequency determining unit 90 may be a CPU (General Purpose Processor), a DSP (Digital Signal Processor) or an FPGA (Programmable Logic Gate Array), and the information receiving unit 91 may be a radio frequency channel and an antenna. A common device is implemented.

 Further, the frequency point determining unit 90 is configured to: determine a specific frequency point as a frequency point used by the transmission system broadcast information, and the information receiving unit 91 is configured to: receive the main information block MIB at the determined specific frequency point. And the system information block SIB; or,

The frequency point determining unit 90 is configured to: determine each frequency point as a frequency point used by the transmission system to broadcast information; The information receiving unit 91 is configured to: if the user equipment is in a connected state, receive the MIB and the SIB at a determined frequency point, and if the user equipment is in an idle state, receive the MIB and the SIB only at a specific frequency point; or ,

 The frequency point determining unit 90 is configured to: determine a specific frequency point as a frequency point used by the transmission MIB, and determine each frequency point as a frequency point used for transmitting the SIB; the information receiving unit 91 is configured to: When the user equipment is in the connected state, the MIB is received at the determined specific frequency point, and the SIB is received at a frequency point used by the determined transmission SIB; if the user equipment is in the idle state, the MIB is received only at the specific frequency point. SIB; or,

 The frequency point determining unit 90 is configured to: determine one of the plurality of frequency points as a frequency point used by the transmission MIB, and determine, according to the set first frequency hopping rule, the used SIB in the multiple frequency points. The information receiving unit 91 is configured to: receive the MIB at a specific frequency point, and receive the SIB at a frequency used by the determined transmission SIB; or

 The frequency point determining unit 90 is configured to: determine, according to the set second frequency hopping rule, a frequency point used by the transmitting MIB, and determine, according to the set first frequency hopping rule, a frequency point used for transmitting the SIB; The unit 91 is configured to: receive the MIB at a frequency point used by the determined transmission MIB, and receive the SIB at a frequency used by the determined transmission SIB.

 Further, the information receiving unit 91 receives the MIB and the SIB at a determined frequency point, specifically: receiving the MIB and the SIB at the data transmission frequency of the user equipment;

 The information receiving unit 91 receives the SIB at a frequency point used by the determined transmission SIB, specifically: receiving the SIB at the data transmission frequency of the user equipment.

 Further, the user equipment further includes:

 The data transmission unit 92 is configured to determine, at the frequency point determining unit, a specific frequency point as a frequency point used by the transmission system broadcast information, where the information receiving unit receives the main information block MIB and system information at the determined specific frequency point. In block SIB, if the data transmission frequency of the user equipment is not a specific frequency point, then:

 After hopping to a specific frequency point to read the updated system broadcast information, hopping to the data transmission frequency of the user equipment; or

 After hopping to a specific frequency point to read the updated system broadcast information and transmitting the read signaling, the frequency hopping to the data transmission frequency of the user equipment.

 The data transmission unit 92 can also be implemented by a device composed of a radio frequency channel and an antenna.

 Further, the information receiving unit 91 is further configured to: receive, by the network side, high-level signaling in advance

The information of the T sent;

 Further, the read signaling is an acknowledgement ACK signaling sent by the user equipment on a data transmission frequency point.

Further, the first frequency hopping rule is: determining, according to a binding relationship between a preset system frame number SFN and a frequency point of the SIB, determining a frequency point of the SIB corresponding to the SFN in the received MIB, the frequency The point is used as the frequency point used to transmit the SIB. Further, the specific frequency point is a primary frequency point, and the primary frequency point is a frequency point of the MIB transmitting the long-term evolution LTE system; or the specific frequency point is an initial access frequency point of the user equipment; or the specific frequency The point is a small bandwidth frequency located in the center of the system bandwidth.

 Further, the information receiving unit 91 is configured to: receive the MIB at a specific frequency point as follows:

 Receiving the MIB of the LTE system at a specific frequency point, using the MIB as the MIB of the small bandwidth system; or receiving the MIB of the LTE system at a specific frequency point, and using the information carried by the information bits of the extended MIB as the MIB of a small bandwidth system.

 Further, the information receiving unit 91 is further configured to:

 Before receiving the SIB, at the frequency point where the transmission SIB is located, the scheduling information transmitted by the network side through the downlink control channel is received, and the downlink control channel at different frequency points is scrambled by the same radio network temporary identifier RNTI or different RNTI.

 Further, the information receiving unit 91 is further configured to:

 Before receiving the system broadcast information, receiving, by the network side, at least one of a frequency used by the transmission system broadcast information and a first frequency hopping rule; or

 According to the agreement with the network side, the information of the frequency point and/or the first hopping rule of the system broadcast message transmitted to the user equipment on the network side is determined.

 In summary, in the solution provided by the embodiment of the present invention, a network bandwidth is selected in a small bandwidth system in which a plurality of frequency points are configured in a data domain of a system bandwidth, and a part of user equipments are configured to perform data transmission in each frequency point. Transmitting one or more frequency points used by the system broadcast information, and transmitting system broadcast information at the selected frequency point, and the user equipment determines one or more frequency points used by the network side transmission system broadcast information, at the determined frequency Receive system broadcast information at the point. It can be seen that this solution solves the problem of how to transmit system broadcast information in a small bandwidth system.

 The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

 The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that the computer Or performing a series of operational steps on other programmable devices to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementing a block in a flow or a flow and/or block diagram of the flowchart Or the steps of the function specified in multiple boxes.

 Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

 It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

A method for transmitting system broadcast information, which is applied to a small bandwidth system in which a plurality of frequency points are configured in a data domain of a system bandwidth and a part of user equipments are configured to perform data transmission in each frequency point, wherein The method includes:

 The network side selects one or more frequency points used by the transmission system to broadcast information;

 The network side transmits system broadcast information at selected frequency points.

 2. The method according to claim 1, wherein the network side selects one or more frequency points used by the transmission system to broadcast information, and transmits system broadcast information on the selected frequency point, specifically including the following four types. One of the methods: Method 1, the network side selects a specific frequency point as a frequency point used by the transmission system broadcast information; transmits the main information block MIB and the system information block SIB at the selected specific frequency point;

 Method 2, the network side selects each frequency point as the frequency point used by the transmission system to broadcast information; transmits the MIB and the SIB on each selected frequency point;

 Method 3, the network side selects a specific frequency point as the frequency point used by the transmission MIB, and selects each frequency point as the frequency point used for transmitting the SIB; transmits the MIB at the selected specific frequency point, and selects each frequency The SIB is transmitted at the point; method 4, the network side selects a specific frequency point as the frequency point used by the transmission MIB, and determines the frequency point used for transmitting the SIB according to the set first frequency hopping rule; at the selected specific frequency point The MIB is transmitted, and the SIB is transmitted at a frequency used by the determined transmission SIB.

 The method according to claim 2, wherein, when the method 1 is used, the user equipment that is not a specific frequency point for the data transmission frequency point further includes:

 The network side stops the data transmission of the user equipment on the data transmission frequency point of the user equipment after the user equipment hops to the selected specific frequency point to read the updated system broadcast information, and After the time T, the user equipment is scheduled to be scheduled at the data transmission frequency; or,

 After the user equipment hops to the selected specific frequency point to read the updated system broadcast information, and before receiving the read signaling sent by the user equipment, the network side stops scheduling on the data transmission frequency point of the user equipment. The data transmission of the user equipment, and after receiving the read signaling sent by the user equipment, starts scheduling the user equipment at the data transmission frequency.

 4. The method of claim 3, further comprising:

 The high-level server notifies the information of the T to the base station of the transmission system broadcast information through the Iub interface with the base station.

 5. The method according to claim 3, wherein the read signaling is an acknowledgement ACK signaling sent by the user equipment on a data transmission frequency point.

The method according to claim 2, wherein the first frequency hopping rule is: according to a preset The binding relationship between the system frame number SFN and the frequency point of the SIB determines the frequency point of the SIB corresponding to the SFN in the transmitted MIB, and uses the frequency point as the frequency point used for transmitting the SIB.

 The method according to claim 2, wherein, when using method 1, method 3 or method 4, the specific frequency selected by the network side is a primary frequency point, and the primary frequency point is a long-term evolution LTE system. The frequency of the MIB; or the specific frequency is the initial access frequency of the user equipment; or the specific frequency is a small bandwidth frequency located in the center of the system bandwidth

8. The method according to claim 7, wherein the method for the network side to transmit the MIB at the selected specific frequency point comprises:

 The network side transmits the MIB of the LTE system as the MIB of the small bandwidth system at the selected specific frequency point; or the network side transmits the MIB of the LTE system at the selected specific frequency point, and extends the information bits of the MIB to carry the information MIB of a small bandwidth system.

 The method according to any one of claims 2-8, wherein the network side further comprises: before transmitting the SIB:

 The network side schedules the user equipment to receive the SIB by transmitting the downlink control channel at the frequency point where the SIB is located, and the downlink control channel at different frequency points is scrambled by the same radio network temporary identifier RNTI or different RNTI.

 The method according to any one of claims 2-8, further comprising:

 The network side sends at least one of the frequency point used by the transmission system broadcast information and the first frequency hopping rule to the user equipment by using the signaling before transmitting the system broadcast information.

 The method according to claim 10, wherein the signaling is a transmitted MIB.

 12. A method for transmitting broadcast information of a system, which is applied to a small bandwidth system in which a plurality of frequency points are configured in a data domain of a system bandwidth, and a part of user equipments are configured to perform data transmission in each frequency point, wherein The method includes:

 The user equipment determines one or more frequency points used by the network side transmission system to broadcast information;

 The user equipment receives system broadcast information at a determined frequency point.

 The method according to claim 12, wherein the user equipment determines one or more frequency points used by the network side transmission system broadcast information, and receives system broadcast information at the determined frequency point, specifically including the following One of four methods:

 Method 1, the user equipment determines a specific frequency point as a frequency point used by the transmission system broadcast information; receiving the main information block MIB and the system information block SIB at the determined specific frequency point;

 In the second method, the user equipment determines the frequency point used by each frequency point as the broadcast information of the transmission system; if the user equipment is in the connected state, receives the MIB and the SIB at a determined frequency point; if the user equipment is in the idle state, Then receiving the MIB and the SIB only at a specific frequency point;

In the third method, the user equipment determines a specific frequency point as the frequency point used by the transmission MIB, and determines each frequency point. The frequency point used for transmitting the SIB; if the user equipment is in the connected state, receiving the MIB at the determined specific frequency point, receiving the SIB at a frequency point used by the determined transmission SIB; if the user equipment is in the idle state , then receive the MIB and SIB only at a specific frequency point;

 In a fourth method, the user equipment determines a specific frequency point of the multiple frequency points as a frequency point used by the transmission MIB, and determines a frequency point used by the transmission SIB in the multiple frequency points according to the set first frequency hopping rule; The MIB is received at a specific frequency, and the SIB is received at a frequency used by the determined transmission SIB.

 The method according to claim 13, wherein, when the method 2 is used, the MIB and the SIB are received at a determined frequency, specifically: receiving at a data transmission frequency of the user equipment. MIB and SIB; When the method 3 is used, the SIB is received at a frequency point used by the determined transmission SIB, specifically: receiving the SIB at the data transmission frequency of the user equipment.

 The method of claim 13, wherein, when the method 1 is used, the user equipment in the connected state that the data transmission frequency is not a specific frequency point further includes:

 After the user equipment hops to a specific frequency to read the updated system broadcast information, the user equipment hops to the data transmission frequency of the user equipment; or

 After the user equipment hops to a specific frequency to read the updated system broadcast information and sends the read signaling, the user equipment hops to the data transmission frequency of the user equipment.

 The method according to claim 15, wherein the read signaling is an acknowledgement ACK signaling sent by the user equipment on a data transmission frequency point.

 The method according to claim 13, wherein the first frequency hopping rule is: determining, according to a binding relationship between a preset system frame number SFN and a frequency point of the SIB, determining the received MIB. The frequency point at which the SIB corresponding to the SFN is located, and the frequency point is used as the frequency point used for transmitting the SIB.

 The method according to claim 13, wherein when the method 1, method 3 or method 4 is used, the specific frequency point is a primary frequency point, and the primary frequency point is a MIB for transmitting a long-term evolution LTE system. The frequency point is; or the specific frequency point is an initial access frequency point of the user equipment; or the specific frequency point is a small bandwidth frequency point located in the center of the system bandwidth.

 The method according to claim 13, wherein the method for the user equipment to receive the MIB at a specific frequency point comprises:

 The user equipment receives the MIB of the LTE system at a specific frequency point, and uses the MIB as the MIB of the small bandwidth system; or

 The user equipment receives the MIB of the LTE system at a specific frequency point, and uses the information carried by the extended information bits of the MIB as the MIB of the small bandwidth system.

 The method according to any one of claims 13 to 19, wherein before the user equipment receives the SIB, the user equipment further includes:

The user equipment receives the scheduling information sent by the network side through the downlink control channel at the frequency point at which the SIB is transmitted. The downlink control channels at different frequencies are scrambled with the same radio network temporary identity RNTI or different RNTIs.

The method according to any one of claims 13 to 19, further comprising:

 Before receiving the system broadcast information, the user equipment receives at least one of a frequency point used by the transmission system broadcast information transmitted by the network side and a first frequency hopping rule; or

 The user equipment determines, according to the agreement with the network side, information about the frequency at which the network side transmits the system broadcast message of the user equipment and/or the first hopping rule.

 22. The method of claim 21, wherein the signaling is a transmitted MIB.

 A base station, the base station comprising:

 a frequency point selection unit, configured to select one or more frequency points used by the transmission system to broadcast information;

 An information transmission unit, configured to transmit system broadcast information on the selected frequency point.

 The base station according to claim 23, wherein the frequency point selecting unit is configured to: select a specific frequency point as a frequency point used for transmitting system broadcast information; and the information transmission unit is configured to: select The main information block MIB and the system information block SIB are transmitted at a specific frequency; or

 The frequency selection unit is configured to: select each frequency point as a frequency point used by the transmission system broadcast information; the information transmission unit is configured to: transmit the MIB and the SIB on each selected frequency point; or

 The frequency selection unit is configured to: select a specific frequency point as a frequency point used by the transmission MIB, and select each frequency point as a frequency point used for transmitting the SIB; the information transmission unit is configured to: select the specific frequency point Transmitting the MIB at the frequency point, transmitting the SIB at each selected frequency point; or

 The frequency selection unit is configured to: select a specific frequency point as a frequency point used by the transmission MIB, and determine a frequency point used by the transmission SIB according to the set first frequency hopping rule; the information transmission unit is configured to: The MIB is transmitted at the selected specific frequency point, and the SIB is transmitted at the frequency point used by the determined transmission SIB.

 The base station according to claim 24, wherein the base station further comprises:

 a transmission scheduling unit, configured to select, at the frequency point selection unit, a specific frequency point as a frequency point used by the transmission system broadcast information, where the information transmission unit transmits the MIB and the SIB at a selected specific frequency point, for data transmission The user equipment whose frequency is not a specific frequency point stops scheduling at the data transmission frequency point of the user equipment within a period of time T after the user equipment hops to the selected specific frequency point to read the updated system broadcast information. Data transmission of the user equipment, and starting the user equipment at the data transmission frequency after T time; or

 After the user equipment hops to the selected specific frequency point to read the updated system broadcast information, before receiving the read signaling sent by the user equipment, stopping scheduling the user on the data transmission frequency point of the user equipment The data transmission of the device starts to schedule the user equipment at the data transmission frequency after receiving the read signaling sent by the user equipment.

 The base station according to claim 25, wherein the information transmission unit is further configured to:

Receiving the information of the T sent by the high-level server through the Iub interface.

The base station according to claim 25, wherein the read signaling is an acknowledgement ACK signaling sent by the user equipment on a data transmission frequency point.

 The base station according to claim 24, wherein the first frequency hopping rule is: determining, according to a binding relationship between a preset system frame number SFN and a frequency point of the SIB, determining an SFN in the transmitted MIB. The frequency point of the corresponding SIB is used as the frequency point used for transmitting the SIB.

 The base station according to claim 24, wherein the specific frequency point is a primary frequency point, and the primary frequency point is a frequency point for transmitting an MIB of a Long Term Evolution (LTE) system; or the specific frequency point is a user equipment. The initial access frequency point; or the specific frequency point is a small bandwidth frequency point located in the center of the system bandwidth.

 The base station according to claim 29, wherein the information transmission unit is configured to: transmit the MIB at the selected specific frequency point according to the following method:

 Transmitting the MIB of the LTE system as the MIB of the small bandwidth system at the selected specific frequency point; or transmitting the MIB of the LTE system at the selected specific frequency point, extending the information bits of the MIB to carry the small bandwidth system MIB.

 The base station according to any one of claims 24 to 30, wherein the information transmission unit is further configured to: before the transmitting the SIB, schedule the user equipment to receive by transmitting a downlink control channel at a frequency point where the SIB is located. SIB, the downlink control channel at different frequency points is scrambled with the same radio network temporary identifier RNTI or different RNTI.

 The base station according to any one of claims 24 to 30, wherein the information transmission unit is further configured to: transmit, by signaling, a frequency point used by the transmission system to broadcast information before transmitting the system broadcast information, At least one of the first hopping rules is sent to the user equipment.

 33. A user equipment, where the user equipment includes:

 a frequency point determining unit, configured to determine one or more frequency points used by the network side transmission system broadcast information; and an information receiving unit, configured to receive system broadcast information at the determined frequency point.

 The user equipment according to claim 33, wherein the frequency point determining unit is configured to: determine a specific frequency point as a frequency point used by the transmission system broadcast information, and the information receiving unit is configured to: Receiving the main information block MIB and the system information block SIB at the determined specific frequency point; or

 The frequency point determining unit is configured to: determine each frequency point as a frequency point used by the transmission system broadcast information; the information receiving unit is configured to: if the user equipment is in a connected state, receive at a determined frequency point The MIB and the SIB, if the user equipment is in an idle state, receive the MIB and the SIB only at a specific frequency; or

 The frequency point determining unit is configured to: determine a specific frequency point as a frequency point used by the transmission MIB, and determine each frequency point as a frequency point used for transmitting the SIB; the information receiving unit is configured to: if the user equipment In the connected state, the MIB is received at the determined specific frequency point, and the SIB is received at a frequency point used by the determined transmission SIB; if the user equipment is in the idle state, the MIB and the SIB are received only at the specific frequency point; Or,

The frequency point determining unit is configured to: determine one of the plurality of frequency points as the frequency used by the transmission MIB Pointing, and determining, according to the set first frequency hopping rule, a frequency point used by the transmitting SIB in the plurality of frequency points; the information receiving unit is configured to: receive the ΜΙΒ at the specific frequency point, and use the determined SIB in the transmission The SIB is received at the frequency.

 The user equipment according to claim 34, wherein the information receiving unit receives the MIB and the SIB at a determined frequency, specifically: receiving the MIB and the SIB at a data transmission frequency of the user equipment. The information receiving unit receives the SIB at a frequency point used by the determined transmission SIB, specifically: receiving the SIB on the data transmission frequency of the user equipment.

 The user equipment of claim 34, wherein the user equipment further comprises:

 a data transmission unit, configured to determine, at the frequency point determining unit, a specific frequency point as a frequency point used by the transmission system broadcast information, where the information receiving unit receives the main information block MIB and the system information block at the determined specific frequency point In SIB, if the data transmission frequency of the user equipment is not a specific frequency point, then:

 After hopping to a specific frequency point to read the updated system broadcast information, hopping to the data transmission frequency of the user equipment; or

 After hopping to a specific frequency point to read the updated system broadcast information and transmitting the read signaling, the frequency hopping to the data transmission frequency of the user equipment.

 The user equipment according to claim 36, wherein the read signaling is an acknowledgement ACK signaling sent by the user equipment on a data transmission frequency point.

 The user equipment according to claim 34, wherein the first frequency hopping rule is: determining, according to a binding relationship between a preset system frame number SFN and a frequency point of the SIB, determining the received MIB. Corresponding to the SFN

The frequency at which the SIB is located, which is used as the frequency used for transmitting the SIB.

 The user equipment according to claim 34, wherein the specific frequency point is a primary frequency point, and the primary frequency point is a frequency point of an MIB transmitting a Long Term Evolution (LTE) system; or the specific frequency point is a user. The initial access frequency of the device; or the specific frequency is a small bandwidth frequency located in the center of the system bandwidth.

 The user equipment according to claim 34, wherein the information receiving unit is configured to: receive the MIB at a specific frequency according to the following method:

 Receiving the MIB of the LTE system at a specific frequency point, using the MIB as the MIB of the small bandwidth system; or receiving the MIB of the LTE system at a specific frequency point, and using the extended information bit of the MIB as the small bandwidth system MIB.

 The user equipment according to any one of claims 34 to 40, wherein the information receiving unit is further configured to:

 Before receiving the SIB, at the frequency point where the transmission SIB is located, the scheduling information transmitted by the network side through the downlink control channel is received, and the downlink control channel at different frequency points is scrambled by the same radio network temporary identifier RNTI or different RNTI.

The user equipment according to any one of claims 34 to 40, wherein the information receiving unit further uses In:

 Before receiving the system broadcast information, receiving, by the network side, at least one of a frequency used by the transmission system broadcast information and a first frequency hopping rule; or

 According to the agreement with the network side, the information of the frequency point and/or the first hopping rule of the system broadcast message transmitted to the user equipment on the network side is determined.