WO2017050184A1

WO2017050184A1 - Mehod for transmitting and receiving system information and transmitting and receiving devices

Info

Publication number: WO2017050184A1
Application number: PCT/CN2016/099098
Authority: WO
Inventors: 石靖; 戴博; 张雯; 陈宪明; 夏树强; 刘锟; 方惠英
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-25
Filing date: 2016-09-14
Publication date: 2017-03-30
Also published as: CN106559809A

Abstract

The present invention provides a method for transmitting and receiving system information and transmitting and receiving devices, wherein the method for transmitting system information includes: determining the system information to be transmitted to a terminal; and transmitting the system information on one or more predefined narrow band locations. The present invention solves the transmission method when downlink control information, such as system message change information, ETWS, CMAS and the like, are independently carried out in the related art, realizing an effect of efficient transmission. The present invention also solves the problem of high complexity of terminal blind detection for the downlink control information which carries the system information, thereby achieving the effect of reducing the complexity of terminal blind detection for the system message.

Description

System information transmitting method, receiving method, transmitting device and receiving device

Technical field

The present invention relates to the field of communications, and in particular to a system information transmitting method, a receiving method, a transmitting device, and a receiving device.

Background technique

Machine Type Communication (MTC) User Equipment (UE), also known as Machine to Machine (M2M) user communication equipment, is the main application form of the Internet of Things. . In recent years, due to the high spectrum efficiency of Long-Term Evolution (LTE)/Long-Term Evolution Advance (LTE-Advance or LTE-A), more and more mobile operations The LTE/LTE-A is selected as the evolution direction of the broadband wireless communication system. MTC multi-class data services based on LTE/LTE-A will also be more attractive. At the same time, in order to re-use the GSM spectrum industry, narrowband LTE (Narrowband LTE, NB-LTE for short) technology can also be supported, and various types of services of the MTC can also be supported.

The existing LTE/LTE-A system is transmitted based on dynamic scheduling of each subframe, that is, each subframe can transmit different control channels.

A physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) and an Enhanced Physical Downlink Control Channel (EPDCCH) are defined in LTE/LTE-A. The PDCCH/EPDCCH is used to carry downlink control information (Downlink Control Information, DCI for short), and includes: uplink and downlink scheduling information, and uplink power control information.

Generally, the MTC terminal can obtain the DCI by demodulating the PDCCH/EPDCCH channel in each subframe, so as to implement demodulation of the Physical Downlink Share Channel (PDSCH) and Physical Uplink Share Channel (Physical Uplink Share Channel). Scheduling indication information for PUSCH). For paging Paging messages, the Paging message is also transmitted through the PDSCH channel. The base station sends a Paging message to the corresponding paging opportunity (Paging Occasion, PO for short) of the terminal through the downlink control channel scheduling indication.

In the MTC application terminal, at least two types of terminals are distinguished. One type of terminal is called a low-cost terminal because the radio frequency receiving bandwidth is limited, and the other type is a low-cost terminal where the location or its own characteristics are limited, thereby causing a significant drop in coverage performance. It is called a coverage enhancement terminal. For example, smart meter reading MTC terminals are mostly installed in a low coverage performance environment such as a basement. They mainly send packet data, have low data rate requirements, and can tolerate large data transmission delays. For the coverage enhanced terminal to ensure the correct transmission of data through multiple repeated transmissions in the time domain.

Regardless of the LTE system or the NB-LTE system, the low-cost terminal is also an overlay enhanced terminal, because there are system messages in the paging message, such as system message change information, Earthquake and Tsunami Warning System (ETWS). The notification information and the commercial mobile alert service (CMAS) notification information independently carry the requirements sent in the downlink control information, and then need to consider How to send downlink control information of this type. The method of transmitting system messages in the related art increases the problem that the terminal blindly detects the complexity of the system message.

There is currently no effective solution to the above problems in the related art.

Summary of the invention

The present invention provides a system information transmitting method, a receiving method, a transmitting device, and a receiving device, so as to at least solve the problem of high complexity of a terminal blind detecting system message existing in the related art.

According to an aspect of the present invention, a system information transmitting method is provided, comprising: determining system information for transmitting to a terminal; transmitting the system information at one or more predetermined narrowband locations.

Optionally, the system information includes at least one of the following: system message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification information, control format indication Information CFI, time division duplex system configuration information, maximum coverage enhancement level max CE level supported by the base station eNB, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical random access channel PRACH configuration Information, narrowband hopping Hopping configuration information, radio channel resource configuration information other than the PRACH channel, uplink frequency and bandwidth information, and multicast broadcast single frequency network MBSFN subframe configuration information.

Optionally, when the system information is located in the first downlink control information DCI, and the system information is only included in the first DCI, sending the system information at one or more predetermined narrowband locations includes: The first DCI is transmitted at one or more predetermined narrowband locations at a predetermined time.

Optionally, the predetermined narrowband is that all terminals in the predetermined cell of the base station are capable of receiving the detected common search space CSS narrowband; and the predetermined time is that all terminals in the predetermined cell of the base station are capable of receiving the detected Paging moment PO.

Optionally, transmitting the first DCI at one or more predetermined narrowband locations at a predetermined time comprises: transmitting at one or more predetermined narrowband locations within a predetermined change period of the system information Or the system information multiple times.

Optionally, when the first DCI is sent, there is no corresponding scheduled physical downlink shared channel PDSCH.

Optionally, when the system information is located in the second downlink control information DCI, and the second DCI further includes other downlink control information except the system information, sending at one or more predetermined narrowband locations. The system information includes: transmitting, according to the identifier of the terminal, the second DCI at one or more of the predetermined narrowband locations at one or more paging moments PO.

Optionally, the system information is at a position of at least one of the following at the second DCI: an idle bit bit in the second DCI; a bit field in an idle state in the second DCI; A partial bit of a bit field in a non-idle state in the second DCI.

Optionally, when the system information is carried in the second downlink control information DCI for transmission, by scheduling The mode indicates the type of the second DCI; when the system information is carried in the second DCI or is carried in the physical downlink shared channel PDSCH, the system information is indicated by the predetermined manner. The second DCI is still carried in the PDSCH; wherein the type includes a normal DCI that does not carry the system information, a normal DCI that carries the system information, and other downlink control information, and the predetermined manner includes at least one of the following : a manner of indicating using an idle bit bit in the second DCI; a manner of placing the second DCI in a specific state; and a manner of temporarily identifying a specific value of the RNTI using a wireless network.

Optionally, the first DCI or the second DCI further carries indication information indicating whether the physical downlink shared channel PDSCH is present, where the specific system update message is indicated when the PDSCH is indicated as being absent. The system information block SIB is sent; when it is indicated that there is a PDSCH, the corresponding specific system update message is sent in the PDSCH.

Optionally, before the sending the system information on the one or more predetermined narrowband positions, the method further includes: passing the indication information for indicating the one or more predetermined narrowband positions to the main information block MIB or system in the system information. An information block SIB or a radio resource control RRC message is sent to the terminal.

According to another aspect of the present invention, a system information receiving method is provided, comprising: determining one or more predetermined narrowband locations; and receiving system information from a base station at the determined one or more predetermined narrowband locations.

Optionally, determining the one or more predetermined narrowband locations includes one of: receiving, by the message information block MIB or the system information block SIB or the radio resource control RRC message in the system information, the pre-sentence sent by the base station Determining information of one or more predetermined narrowband locations, determining the one or more predetermined narrowband locations based on the indication information; determining the location according to a pre-configured protocol for identifying the one or more predetermined narrowband locations .

Optionally, receiving system information from the base station at the determined one or more predetermined narrowband locations comprises: receiving, at the predetermined time, the bearer from the base station at the determined one or more predetermined narrowband locations The third DCI of the system information.

Optionally, the predetermined narrowband is that all terminals in the predetermined cell of the base station can receive the detected public search space CSS narrowband; the predetermined moment is that all terminals in the predetermined cell of the base station can receive The detected paging moment PO.

Optionally, receiving, at the predetermined time, the third DCI that carries the system information from the base station at the determined one or more predetermined narrowband locations, including: a predetermined change period of the system information The third DCI is received one or more times at one or more predetermined narrowband locations.

Optionally, receiving system information from the base station at the determined one or more predetermined narrowband locations includes: Receiving fourth downlink control information DCI from the base station in the predetermined one or more predetermined narrowband positions; according to the bit for indicating, the state of the fourth DCI, and the predetermined wireless in the fourth DCI The network temporarily identifies at least one of the RNTI values of the RNTI, determines the type of the fourth DCI, or determines whether the system information is located in the fourth DCI or in the physical downlink shared channel PDSCH, where the type includes A normal DCI that does not carry the system information, a normal DCI that carries the system information and other downlink control information, and receives the system information according to the determination result.

According to another aspect of the present invention, a system information transmitting apparatus is provided, comprising: a first determining module configured to determine system information for transmitting to a terminal; and a first transmitting module configured to be in one or more predetermined narrow bands The system information is transmitted at the location.

Optionally, the apparatus further includes: a second sending module configured to pass the indication information for indicating the one or more predetermined narrowband positions before transmitting the system information at one or more predetermined narrowband positions A message information block MIB or a system information block SIB or a radio resource control RRC message in the system information is sent to the terminal.

According to another aspect of the present invention, a system information receiving apparatus is provided, comprising: a second determining module configured to determine one or more predetermined narrowband positions; and a receiving module configured to determine the one or more predetermined ones Receive system information from the base station at a narrowband location.

Optionally, the second determining module includes one of the following: the first determining unit is configured to receive, by using the message information block MIB or the system information block SIB or the radio resource control RRC message in the system information, the base station to send in advance Determining the one or more predetermined narrowband locations according to the indication information, and indicating, by the pre-configured, one or more The protocol for the predetermined narrowband position determines the location.

Another embodiment of the present invention provides a computer storage medium storing execution instructions for performing the method in the above embodiments.

By means of the invention, the system information determined for transmission to the terminal is employed; in one or more predetermined narrowband or physical resources The system information is sent at the block group location. The problem of the transmission mode when the downlink control information of the independent bearer system message, the ETWS, the CMAS, and the like are solved in the related art, and the effect of the high-efficiency transmission is achieved; and the downlink control information of the terminal blind detection bearer system message existing in the related art is also solved. The problem of high complexity further achieves the effect of reducing the complexity of the message of the terminal blind detection system.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of a system information transmitting method according to an embodiment of the present invention;

2 is a schematic diagram 1 of transmitting a dedicated DCI at a common CSS narrowband and a common PO time position according to an embodiment of the present invention;

3 is a second schematic diagram of transmitting a dedicated DCI at a common CSS narrowband and a common PO time position according to an embodiment of the present invention;

4 is a flowchart of a system information receiving method according to an embodiment of the present invention;

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

6 is a block diagram showing a preferred structure of a system information transmitting apparatus according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of a system information receiving apparatus according to an embodiment of the present invention; FIG.

FIG. 8 is a structural block diagram of a second determining module 72 in the system information receiving apparatus according to an embodiment of the present invention;

9 is a schematic diagram of DCI for transmitting a scheduled normal paging message containing downlink information in a plurality of CSS narrowbands according to an embodiment of the present invention.

detailed description

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

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a system information sending method is provided. FIG. 1 is a flowchart of a system information sending method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, determining system information for sending to the terminal;

Step S104, transmitting the above system information at one or more predetermined narrowband positions.

The foregoing narrowband may also be referred to as a physical resource block group (PRB), and the foregoing operation may be a base station, and the one or more predetermined narrowband locations may also be pre-negotiated locations of the base station and the terminal. When the system message is sent, the transmission may be carried on the downlink control channel. Therefore, the complexity of blind detection of the terminal can be reduced. The problem of the transmission mode when the downlink control information of the independent bearer system message, the ETWS, the CMAS, and the like are solved in the related art, and the effect of the high-efficiency transmission is achieved; and the downlink control information of the terminal blind detection bearer system message existing in the related art is also solved. The problem of high complexity further achieves the effect of reducing the complexity of the message of the terminal blind detection system.

In an optional embodiment, the foregoing system information may include at least one of the following: system message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alarm service CMAS, notification information, extended access control (Extended Access) Barring (abbreviated as EAB) parameter change notification information, Control Format Indicator (CFI), time division duplex system configuration information, maximum coverage enhancement level max CE level supported by the base station eNB, and coverage enhancement supported by the base station eNB Level CE levels, cell access related information, system message scheduling information, physical random access channel (Physical Random Access Channe, PRACH) configuration information, narrowband hopping Hopping configuration information, and other channel radio resource configuration information except the PRACH channel , uplink frequency and bandwidth information, and multicast broadcast single frequency network (MBSFN) subframe configuration information (or cell-specific effective subframe configuration information). The preferred system message combination includes at least one of the following combinations: combination 1: system message change information, ETWS, CMAS; combination 2: system message change information, ETWS, CMAS, CFI, TDD configuration; combination 3: system message change information , ETWS, CMAS, max CE level. Of course, it can also be other combinations, which are not listed here.

When transmitting the above system message, the above system message may be used as a dedicated DCI (ie, transmitted by using a dedicated DCI containing only the above system message) or as part of DCI, and the predetermined narrowband is preferably a CSS narrowband, that is, may pass The above system message information carried by the downlink control channel is sent in one or more CSS narrowband. In an optional embodiment, when the system information is located in the first downlink control information DCI, and the first DCI includes only the foregoing system information (the first DCI is a dedicated DCI), in one or more Transmitting the system information at the predetermined narrowband location includes transmitting the first DCI at one or more predetermined narrowband locations at a predetermined time. The above system information is used as a dedicated DCI, and does not use a DCI that schedules a normal paging message, that is, does not include an indication of resource allocation, modulation and coding scheme, and the like. The transmission is performed at a predetermined narrowband and a predetermined time, that is, the transmission location is known to the base station and the UE and does not distinguish the specific UE.

In an optional embodiment, the predetermined narrowband is that all terminals in the predetermined cell of the base station can receive the detected common search space CSS narrowband; the predetermined time is that all terminals in the predetermined cell of the base station can receive the detected seek Call time PO. Preferably, all terminals in the cell use the same CSS narrowband at the same PO time, as shown in FIG. 2. FIG. 2 is a schematic diagram 1 of transmitting dedicated DCI at a common CSS narrowband and a common PO time position according to an embodiment of the present invention. The same PO time or PO time group receives the corresponding downlink information, where the PO time or PO time group is a time that all terminals can receive, that is, a public reception time. The same CSS narrowband can be used at different PO times. As shown in FIG. 2, different CSS narrowbands can also be used, as shown in FIG. 3. FIG. 3 is a common CSS narrowband and public PO moment according to an embodiment of the present invention. The location sends a schematic diagram of the dedicated DCI, but for a certain PO moment, only one CSS narrowband can be used.

In an optional embodiment, transmitting the first DCI at one or more predetermined narrowband locations at a predetermined time comprises: in one or more predetermined periods of the predetermined change period of the system information The system information is transmitted one or more times in a narrowband position. That is, the change cycle may include one or more of the predetermined times described above, and the system message may be transmitted at each predetermined time. Therefore, one or more of the system messages may be transmitted in one change cycle. The system information content does not change when the system message is sent one or more times. Preferably, the system message is sent one or more times in the system information change period to ensure that all terminals in the cell receive the system information with a large probability. .

In an optional embodiment, when the first DCI is sent, there is no corresponding scheduled physical downlink shared channel PDSCH. Optionally, when the first DCI (ie, the dedicated DCI) only carries the foregoing system information, and there is no scheduling indication information included in the traditional downlink control information, such as a corresponding resource allocation and a modulation and coding mode, the dedicated DCI is not available at this time. Corresponding to the scheduled PDSCH. The terminal no longer receives the corresponding PDSCH channel after receiving the dedicated DCI.

In an optional embodiment, transmitting the system message at one or more predetermined narrowband or physical resource block group locations comprises: carrying the system message on a physical downlink shared channel PDSCH at one or more predetermined narrowband locations Send the above system message. The system information may also be located in a normal DCI, where the normal DCI is a DCI for scheduling a normal paging message. In an optional embodiment, when the system information is located in the second downlink control information DCI, and the second DCI further includes other downlink control information except the system information, at one or more predetermined narrowband locations. Transmitting the foregoing system information includes: transmitting, according to the identifier UE ID of the terminal, the second DCI at one or more of the predetermined narrowband locations at one or more paging moments PO. That is, the second DCI is a normal DCI.

In an optional embodiment, the foregoing system information may be located in the DCI or in the PDSCH, where the DCI may be a DCI that schedules a normal paging message (ie, the second DCI described above). Preferably, there is a corresponding scheduled PDSCH channel, which carries a Paging message of a corresponding part or all users. The base station eNB may transmit the DCI in one or more CSS narrowband/physical resource block group PRB groups and one or more POs according to the UE ID. That is, the Paging record information of some users is carried in the same Paging message, and the eNB schedules the Paging message including the downlink information according to the UE ID of the users (the above-mentioned terminal) in a CSS narrowband and one or Multiple PO times are transmitted. For another part of the user, the Paging record information is carried in another Paging message, and the eNB schedules the Paging message including the downlink information according to the UE ID of the other part of the user in another CSS narrowband and one or more PO moments. Sending, as shown in FIG. 3, from the perspective of the eNB, the DCI of the scheduled normal paging message that carries the downlink information is located in a plurality of CSS narrowbands, and for the terminal, only one CSS narrowband can be received at the same PO moment. The downlink information. Preferably, the terminal can implicitly obtain the CSS narrowband location that needs to be received by the UE ID.

In an optional embodiment, the foregoing system information is at a position of at least one of the following at the second DCI: an idle bit bit in the second DCI; a bit field in an idle state in the second DCI; and a second DCI Part of the bit field in the non-idle state. The following is a detailed description of the padding bit or the idle state of the DCI that is used to schedule the normal Paging message. Specifically, when there is an idle bit in the DCI message, such as a Padding bit, the idle bit is used to carry the system information, where the size of the downlink information is less than or Equivalent to the number of idle bits, or the idle state of the normal DCI message. For example, the 2 bit information indicating the transmission power control TPC has no specific indication at this time, and is in an idle state. At this time, the system information is transmitted using the bit field, where the system The size of the information is less than or equal to the number of bits corresponding to the idle state. Can also be used The non-idle state of the DCI that schedules normal paging messages. Specifically, when the resource allocation bit field is indicated, after all possible allocations or indications are indicated, there is still state remaining, and the remaining status indication is used. Or, if part of the bit of the resource allocation bit field is occupied, the resource allocation is simplified, thereby saving part of the overhead.

In an optional embodiment, when the system information is carried in the second downlink control information DCI for transmission, the type of the second DCI may be indicated in a predetermined manner; when the system information is carried in the second When the DCI is transmitted in the physical downlink shared channel (PDSCH), the system information may be in the second DCI or the PDSCH in the foregoing predetermined manner. The type includes the normal DCI that does not carry the system information. a normal DCI carrying the system information and other downlink control information, the predetermined manner includes at least one of: a manner of using an idle bit bit in the second DCI; a manner of placing the second DCI in a specific state; using wireless The way the network temporarily identifies the specific value of the RNTI.

When the idle bit indication is used, the 1 bit of the padding bit may be used to indicate whether the format/type of the second DCI of the system information is a DCI for scheduling a normal paging message or a DCI for not scheduling a normal paging message, or indicating that the system information is located. The DCI is also in the PDSCH. Or use 1 bit or x bit (x is a positive integer greater than 1) to indicate that the second DCI format is system information that carries a specific combination of system information. When a specific status indication is used, one of the padding bit or the resource allocation or modulation coding mode, such as all 0 bits, or a specially designated bit sequence, may be used to indicate the format of the second DCI carrying the system information. / Is the DCI that schedules the normal paging message or the DCI without the corresponding scheduling of the normal paging message, or indicates whether the above system information is in the DCI or the PDSCH. Or use one state or x states (x is a positive integer greater than 1) to indicate that the second DCI format is system information carrying a specific combination of system information. When different RNTI values are used, two different RNTI values (one of which is the value FFFE of the P-RNTI) can be used to indicate whether the format/type of the second DCI is DCI for scheduling a normal paging message or not. The DCI of the normal paging message indicates whether the system information is located in the DCI or the PDSCH. Preferably, the P-RNTI is used to indicate that the format/type of the second DCI is a DCI for scheduling a normal paging message or that the system information is located in the PDSCH. Or using x RNTI values (x is a positive integer greater than or equal to 2) to indicate that the second DCI format is system information carrying a specific combination of system information.

In an optional embodiment, the first DCI or the second DCI further carries indication information indicating the presence or absence of the physical downlink shared channel PDSCH, where the corresponding specific system is indicated when there is no PDSCH. The update message is sent in the system information block SIB; when it is indicated that there is a PDSCH, the corresponding specific system update message is sent in the PDSCH.

In an optional embodiment, before the transmitting the system information on the one or more predetermined narrowband positions, the method further includes: passing the indication information for indicating the one or more predetermined narrowband positions to the main information block in the system information. (Master Information Block, abbreviated as MIB) or System Information Blocks (SIB or Radio Resource Control (RRC) message) is sent to the terminal. It can also be used to identify the pre-configured information. The protocol of one or more predetermined narrowband locations determines the location of the predetermined narrowband described above.

In the embodiment of the present invention, a system information receiving method is also provided. FIG. 4 is a flowchart of a system information receiving method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

Step S402, determining one or more predetermined narrowband positions;

Step S404, receiving system information from the base station at the determined one or more predetermined narrowband locations.

The foregoing narrowband may also be referred to as a physical resource block group PRB group, and the foregoing operation may be a terminal, and the one or more predetermined narrowband locations may also be pre-negotiated locations of the base station and the terminal, and the system message is received. When it is determined, it can be received at a predetermined narrowband position. Therefore, the complexity of blind detection of the terminal can be reduced. Therefore, the problem of the transmission mode when the downlink control information of the independent bearer system message, the ETWS, the CMAS, and the like are solved in the related art, and the effect of the high-efficiency transmission is achieved; and the downlink control of the terminal blind detection bearer system message existing in the related art is also solved. The problem of high complexity of information further achieves the effect of reducing the complexity of the message of the terminal blind detection system.

In an optional embodiment, the foregoing system information may include at least one of the following: system message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification Information, control format indication information CFI, time division duplex system configuration information, maximum coverage enhancement level max CE level supported by the base station eNB, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical randomness Access channel PRACH configuration information, narrowband hopping Hopping configuration information, other channel radio resource configuration information except the PRACH channel, uplink frequency and bandwidth information, multicast broadcast single frequency network MBSFN subframe configuration information (or cell-specific actor) Frame configuration information).

In an optional embodiment, determining the one or more predetermined narrowband locations includes one of: pre-sending by the base station by the message information block MIB or the system information block SIB or the radio resource control RRC message in the system information Instructing information indicating one or more predetermined narrowband locations, determining one or more predetermined narrowband locations based on the indication information; determining the location based on a pre-configured protocol for identifying the one or more predetermined narrowband locations.

In an optional embodiment, receiving system information from the base station at the determined one or more predetermined narrowband locations comprises: receiving, at the predetermined time, the one or more predetermined narrowband locations from the base station The third DCI carrying the above system information.

In an optional embodiment, the predetermined narrowband is that all terminals in the predetermined cell of the base station can receive the detected common search space CSS narrowband; the predetermined time is that all terminals in the predetermined cell of the base station can receive the detected seek Call time PO.

In an optional embodiment, receiving the third DCI from the base station that carries the system information at the determined one or more predetermined narrowband locations at a predetermined time comprises: in a predetermined change period of the foregoing system information Receiving one or more of the above third DCIs at one or more predetermined narrowband locations.

In an optional embodiment, receiving system information from the base station at the determined one or more predetermined narrowband locations comprises: receiving fourth downlink control information DCI from the base station at the determined one or more predetermined narrowband locations Determining the type of the fourth DCI or determining that the system information is located according to at least one of a bit for performing indication, a state of the fourth DCI, and a predetermined RNTI value of the radio network temporary identifier RNTI in the fourth DCI The fourth DCI is still carried in the physical downlink shared channel (PDSCH), where the type includes a normal DCI that does not carry the system information, a normal DCI that carries the system information and other downlink control information, and receives the system information according to the determination result. .

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

In the embodiment, a system information sending device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 5 is a structural block diagram of a system information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a first determining module 52 and a first transmitting module 54, which will be described below.

The first determining module 52 is configured to determine system information for transmitting to the terminal; the first sending module 54 is coupled to the first determining module 52 and configured to transmit the system information at one or more predetermined narrowband locations.

In an optional embodiment, the system information includes at least one of the following: system message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification information Control format indication information CFI, time division duplex system configuration information, maximum coverage enhancement level max CE level supported by the base station eNB, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical random access Incoming channel PRACH configuration information, narrowband hopping Hopping configuration information, other channel radio resource configuration information except the PRACH channel, uplink frequency and bandwidth information, multicast broadcast single frequency network MBSFN subframe configuration information (or cell-specific effective subframe) Configuration information). The preferred system message combination includes at least one of the following combinations: combination 1: system message change information, ETWS, CMAS; combination 2: system message change information, ETWS, CMAS, CFI, TDD configuration; combination 3: system message change information , ETWS, CMAS, max CE level. Of course, it can also be other combinations, which are not listed here.

In an optional embodiment, the predetermined narrowband is that all terminals in the predetermined cell of the base station can receive the detected common search space CSS narrowband; the predetermined time is that all terminals in the predetermined cell of the base station can receive the detected seek Call time PO. Preferably, all terminals in the cell use the same CSS narrowband at the same PO moment, as shown in FIG. 2 It is shown that the corresponding downlink information is received at the same PO time or PO time group, where the PO time or PO time group is a time that all terminals can receive, that is, a public reception time. The same CSS narrowband can be used at different PO times. As shown in Figure 2, different CSS narrowbands can also be used, as shown in Figure 3, but for a certain PO moment, only one CSS narrowband can be used.

In an optional embodiment, the foregoing system information is at a position of at least one of the following at the second DCI: an idle bit bit in the second DCI; a bit field in an idle state in the second DCI; and a second DCI Part of the bit field in the non-idle state. The following is a detailed description: using the padding bit or idle state of the DCI that schedules the normal paging message, Specifically, when there is an idle bit in the DCI message, such as a Padding bit, the idle bit is used to carry the foregoing system information, where the size of the downlink information is less than or equal to the number of idle bits, or the idle state of the normal DCI message is used, such as indicating the transmission power. The 2 bit information of the control TPC has no specific indication meaning at this time, and is in an idle state. At this time, the system information is transmitted by using the bit field, wherein the size of the system information is less than or equal to the number of bits corresponding to the idle state. It is also possible to use a non-idle state of the DCI that schedules normal paging messages. Specifically, when the resource allocation bit field is indicated, after all possible allocations or indications are indicated, there is still state remaining, and the remaining status indication is used. Or, if part of the bit of the resource allocation bit field is occupied, the resource allocation is simplified, thereby saving part of the overhead.

6 is a block diagram showing a preferred structure of a system information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes a second transmitting module 62 in addition to all the modules shown in FIG. Be explained.

The second sending module 62 is connected to the first sending module 54 and configured to pass the indication information for indicating one or more predetermined narrowband positions through the system information before transmitting the system information at one or more predetermined narrowband positions. Lord The information block MIB or the system information block SIB or the radio resource control RRC message is sent to the terminal.

In the embodiment of the present invention, a system information receiving apparatus is further provided. FIG. 7 is a structural block diagram of a system information receiving apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes a second determining module 72 and receiving. Module 74, the device will be described below.

a second determining module 72, configured to determine one or more predetermined narrowband locations; a receiving module 74 coupled to the second determining module 72, configured to receive system information from the base station at the determined one or more predetermined narrowband locations .

FIG. 8 is a structural block diagram of a second determining module 72 in the system information receiving apparatus according to an embodiment of the present invention. As shown in FIG. 8, the second determining module 72 includes a first determining unit 82 or a second determining unit 84. The second determination module 72 will be described.

The first determining unit 82 is configured to receive, by using the message information block MIB or the system information block SIB or the radio resource control RRC message in the system information, the indication information that is sent in advance by the base station to indicate the one or more predetermined narrowband positions, according to the foregoing The indication information determines one or more predetermined narrowband locations; the second determining unit 84 is configured to determine the location based on a pre-configured protocol for identifying the one or more predetermined narrowband locations.

In an optional embodiment, receiving system information from the base station at the determined one or more predetermined narrowband locations comprises: receiving fourth downlink control information DCI from the base station at the determined one or more predetermined narrowband locations Determining the type of the fourth DCI or determining that the system information is located according to at least one of a bit for performing indication, a state of the fourth DCI, and a predetermined RNTI value of the radio network temporary identifier RNTI in the fourth DCI The fourth DCI is still carried in the physical downlink shared channel PDSCH, where the type includes the ordinary information that does not carry the system information. DCI, a normal DCI carrying the above system information and other downlink control information; receiving the above system information according to the determination result.

By using the transmission method of the system information proposed in the embodiment of the present invention, efficient transmission of the system information of the independent bearer system message, ETWS, CMAS, etc. can be ensured, and the terminal can recognize the information when the information is not independently carried. Does not increase the complexity of blind detection.

The following is further illustrated by the specific examples. In the following embodiments, the system information may also be referred to as downlink information, and the system information is described as system message change information, ETWS, and CMAS.

Example 1

This embodiment describes the downlink information transmission in detail by using the method provided by the present invention.

The base station eNB determines that the downlink information content is system message change information, ETWS, CMAS, and the downlink information separately forms a dedicated DCI and transmits in the downlink control channel.

The eNB transmits the downlink information in a predetermined CSS narrowband and a predetermined PO time. Wherein, in the downlink information change period, one or more locations exist at the predetermined PO time. For each PO moment, the eNB transmits the downlink information only on one CSS narrowband, and the predetermined CSS narrowbands may be the same or different at different PO moments when there are multiple locations at the PO time.

When the coverage enhancement is performed, the eNB repeatedly transmits the downlink information at a plurality of PO moments on a predetermined CSS narrowband. The same PO moment corresponds to only one CSS narrowband position, and the CSS narrowbands at different PO moments may be the same or different, or the frequency hopping transmission is performed by using a certain hopping pattern, which is predefined or eNB notified.

The terminal receives the downlink information in a predetermined CSS narrowband and a predetermined PO time. The terminal may receive the downlink information once at a predetermined PO time, or receive the downlink information multiple times at a plurality of predetermined PO moments, and receive the at least one time in the downlink information change period. At the same PO time, all terminals receive the downlink information on the same CSS narrowband.

When the coverage is enhanced, the terminal repeatedly receives the downlink information at a plurality of PO moments on a predetermined CSS narrowband. The same PO moment corresponds to only one CSS narrowband position, and the CSS narrowbands at different PO moments may be the same or different, or the frequency hopping transmission is performed by using a certain hopping pattern, which is predefined or eNB notified.

After receiving the downlink information, the terminal does not receive the corresponding PDSCH message. If the system message is found to be changed, the corresponding SIB message is received.

By using the transmission method of the downlink information proposed by the present invention, efficient transmission of the message information of the independent bearer system, the downlink control information of the ETWS, and the CMAS can be ensured.

Example 2

Optionally, the downlink information is located in the DCI or the PDSCH, where the DCI is a DCI that schedules a normal paging message. Preferably, there is a corresponding scheduled PDSCH channel, which carries a Paging message of a corresponding part or all users. The eNB transmits the DCI according to the UE ID in one or more CSS narrowband/physical resource block group PRB groups and one or more POs. That is, the Paging record information of the part of the user is carried in the same Paging message, and the eNB sends the Paging message including the downlink information according to the UE ID of the user in a CSS narrowband and one or more PO moments. . For another part of the user, the Paging record information is carried in another Paging message, and the eNB schedules the Paging message including the downlink information according to the UE ID of the other part of the user in another CSS narrowband and one or more PO moments. The transmission is performed. As shown in FIG. 9 , from the perspective of the eNB, the DCI of the scheduled normal paging message that carries the downlink information is located in a plurality of CSS narrowbands, and for the terminal, only one CSS narrowband can be received at the same PO moment. The downlink information, wherein FIG. 9 is a schematic diagram of DCI for transmitting a scheduled normal paging message containing downlink information in a plurality of CSS narrowbands according to an embodiment of the present invention. Preferably, the terminal implicitly obtains the CSS narrowband location that it needs to receive through the UE ID.

The eNB determines that the downlink information content is system message change information, ETWS, CMAS, and the downlink information is located in the DCI that schedules the normal paging message, and is transmitted in the downlink control channel.

The eNB transmits the DCI to the UE1 and the UE1 with the paging group (the first paging group) at the first CSS narrowband and the predetermined PO time for the UE ID and UE2 UE ID conversion, in the second CSS narrowband and the scheduled PO time. The DCI is transmitted to the UE2 and the terminal of the paging group (second paging group) with the UE2. Wherein, in the downlink information change period, one or more locations exist at the predetermined PO time. For one PO moment, the eNB sends the downlink information only on one CSS narrowband for the same paging group. The CSS narrowbands corresponding to different paging groups may be the same or different, that is, there is only one CCS narrowband position at one PO moment. The first CSS narrowband and the second CSS narrowband are independently determined, and the first CSS narrowband and the second CSS narrowband may be different or different at this moment. The CSS narrowbands corresponding to the same paging group may be the same or different at different PO moments, and the narrowband positions of the first CSS narrowband or the second CSS narrowband may be the same or different at different PO moments. The multiple PO time positions of the different paging groups may be the same or partially the same or completely different, that is, the PO times of the first paging group and the second paging group are independently determined, and may be the same or partially the same or completely different. The DCI and the DCI of the scheduled normal paging message without the downlink information use different RNTIs for scrambling or idle bit/status indication.

When the coverage enhancement is performed, the eNB repeatedly transmits the downlink information to UE1 and UE2 of different paging groups on respective predetermined CSS narrowbands and at respective multiple PO moments. The same PO time only corresponds to one CSS narrowband position for the same paging group, and the CSS narrowband positions of different paging groups are independently determined, and may be the same or different. The CSS narrowbands of the same paging group at different PO moments may be the same or different, or perform frequency hopping transmission with a certain hopping pattern, which is predefined or eNB notified. The PO moments of different paging groups are independently determined and may be the same or partially the same or completely different.

The terminal receives the downlink information in a predetermined CSS narrowband and a predetermined PO time, that is, the UE1 receives the downlink information in a first CSS narrowband corresponding to the first paging group and one or more PO moments, and the UE2 is in the second paging. The second CSS narrowband corresponding to the group and the one or more PO moments receive the downlink information. The terminal has the opportunity to receive downlink information at least once during the change period. At the same PO time, the first CSS narrowband and the second CSS narrowband independent determination may be the same or different. The narrowband positions of the first CSS narrowband corresponding to different PO moments in the presence of multiple PO moments may be the same or different, and the same reason The second CSS narrow band.

When the coverage is enhanced, the terminal repeatedly receives the downlink information at a plurality of PO times on a predetermined CSS narrowband, and the UE1 receives the downlink information in a first CSS narrowband at a plurality of PO moments, and the UE2 is in the second CSS at a plurality of PO moments. The narrowband receives the downlink information. The first CSS narrowband and the second CSS narrowband position may be the same or different at the same PO moment. The CSS narrowbands of the same paging group at different PO times may be the same or different, or may perform frequency hopping transmission with a certain hopping pattern, which is predefined or eNB notified.

After receiving the downlink information, the terminal indicates, by using the control information, that the corresponding PDSCH message is received. Optionally, there is a specific system update message content in the PDSCH.

By using the downlink information transmission method proposed by the embodiment of the present invention, the terminal can identify the non-independent bearer system message change information, the ETWS, and the CMAS information, and the terminal does not increase the blind detection complexity.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S11. Determine system information used for sending to the terminal.

S12, transmitting the above system information at one or more predetermined narrowband locations.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

S21, determining one or more predetermined narrowband positions;

S22. Receive system information from the base station at the determined one or more predetermined narrowband locations.

Optionally, in the embodiment, the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM). A variety of media that can store program code, such as a hard disk, a disk, or an optical disk.

Optionally, in this embodiment, the processor performs the above step S11-12 according to the stored program code in the storage medium.

Optionally, in this embodiment, the processor performs the above step S21-22 according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

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

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the system information sending method, the receiving method, the sending device, and the receiving device provided by the embodiments of the present invention have the following beneficial effects: the downlink control information of the independent bearer system message change information, ETWS, CMAS, etc. in the related art is solved. The problem of the transmission mode of the time is achieved, and the effect of the high-efficiency transmission is achieved. The problem that the downlink control information of the terminal blind detection bearer system message is high in the related art is also solved, thereby reducing the complexity of the message of the terminal blind detection system. effect.

Claims

A system information sending method includes:

Determining system information for sending to the terminal;

The system information is transmitted at one or more predetermined narrowband locations.
The method of claim 1 wherein said system information comprises at least one of:

System message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification information, control format indication information CFI, time division duplex system configuration information, base station eNB support Maximum coverage enhancement level max CE level, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical random access channel PRACH configuration information, narrowband hopping Hopping configuration information, and other than the PRACH channel Channel radio resource configuration information, uplink frequency and bandwidth information, multicast broadcast single frequency network MBSFN subframe configuration information.
The method of claim 1, wherein when the system information is located in the first downlink control information DCI and the system information is included in the first DCI, at one or more predetermined narrowband locations Sending the system information includes:

The first DCI is transmitted at one or more predetermined narrowband locations at a predetermined time.
The method of claim 3 wherein:

The predetermined narrowband is a narrowband of the detected common search space CSS for all terminals in the predetermined cell of the base station;

The predetermined time is that all terminals in the predetermined cell of the base station can receive the detected paging time PO.
The method of claim 3 wherein transmitting the first DCI at one or more predetermined narrowband locations at a predetermined time comprises:

The system information is transmitted one or more times at one or more predetermined narrowband locations during a predetermined change period of the system information.
The method according to claim 3, wherein when the first DCI is transmitted, there is no corresponding scheduled physical downlink shared channel PDSCH.
The method according to claim 1, wherein when the system information is located in the second downlink control information DCI, and the second DCI further includes other downlink control information except the system information, in one or Transmitting the system information at a plurality of predetermined narrowband locations includes:

And transmitting, according to the identifier of the terminal, the second DCI at one or more of the predetermined narrowband locations at one or more paging moments PO.
The method of claim 7, wherein the system information is at least one of the following in the second DCI Location:

An idle bit bit in the second DCI;

a bit field in an idle state in the second DCI;

A partial bit of the bit field in the non-idle state in the second DCI.
The method according to claim 7, wherein when the system information is carried in the second downlink control information DCI for transmission, the type of the second DCI is indicated by a predetermined manner; when the system information is carried When the second DCI is transmitted in the physical downlink shared channel (PDSCH), whether the system information is located in the second DCI or in the PDSCH by using the predetermined manner; wherein, the type And including a normal DCI that does not carry the system information, and a normal DCI that carries the system information and other downlink control information, where the predetermined manner includes at least one of the following:

Means for indicating using the idle bit bit in the second DCI;

a manner of placing the second DCI in a particular state;

A way to temporarily identify a particular value of an RNTI using a wireless network.
The method according to claim 3 or 7, wherein the first DCI or the second DCI further carries indication information indicating presence or absence of a physical downlink shared channel PDSCH, wherein the indication is none In the PDSCH, the corresponding specific system update message is sent in the system information block SIB; when it is indicated that there is a PDSCH, the corresponding specific system update message is sent in the PDSCH.
The method of claim 1 further comprising: before transmitting the system information at one or more predetermined narrowband locations, further comprising:

The indication information for indicating the one or more predetermined narrowband positions is transmitted to the terminal by a primary information block MIB or a system information block SIB or a radio resource control RRC message in the system information.
A system information receiving method includes:

Determining one or more predetermined narrow band positions;

System information from the base station is received at the determined one or more predetermined narrowband locations.
The method of claim 12, wherein the system information comprises at least one of the following:

System message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification information, control format indication information CFI, time division duplex system configuration information, base station eNB support Maximum coverage enhancement level max CE level, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical random access channel PRACH configuration information, narrowband hopping Hopping configuration information, and other than the PRACH channel Channel radio resource configuration information, uplink frequency and bandwidth information, multicast broadcast single frequency network MBSFN subframe configuration information.
The method of claim 12 wherein determining the one or more predetermined narrowband locations comprises one of:

Receiving, by the message information block MIB or the system information block SIB or the radio resource control RRC message in the system information, the indication information that is sent in advance by the base station to indicate the one or more predetermined narrowband positions, and determining, according to the indication information, Describe one or more predetermined narrow band positions;

The location is determined based on a pre-configured protocol for identifying the one or more predetermined narrowband locations.
The method of claim 12 wherein receiving system information from the base station at the determined one or more predetermined narrowband locations comprises:

At a predetermined time, a third DCI carrying the system information from the base station is received at the determined one or more predetermined narrowband locations.
The method of claim 15 wherein:

The predetermined narrowband is a narrowband of the public search space CSS that all terminals in the predetermined cell of the base station can receive;

The predetermined time is that all terminals in the predetermined cell of the base station can receive the detected paging time PO.
The method of claim 15, wherein receiving, at the predetermined time, the third DCI carrying the system information from the base station at the determined one or more predetermined narrowband locations comprises:

The third DCI is received one or more times at one or more predetermined narrowband locations during a predetermined change period of the system information.
The method of claim 12 wherein receiving system information from the base station at the determined one or more predetermined narrowband locations comprises:

Receiving fourth downlink control information DCI from the base station at the determined one or more predetermined narrowband locations;

Determining the type or determination of the fourth DCI according to at least one of a bit for performing indication, a state of the fourth DCI, and a predetermined RNTI value of a radio network temporary identifier RNTI in the fourth DCI. Whether the system information is located in the fourth DCI or in the physical downlink shared channel (PDSCH), where the type includes a normal DCI that does not carry the system information, and a normal DCI that carries the system information and other downlink control information. ;

The system information is received according to the determination result.
A system information sending device includes:

a first determining module, configured to determine system information for sending to the terminal;

The first transmitting module is configured to transmit the system information at one or more predetermined narrowband locations.
The apparatus of claim 19, wherein the system information comprises at least one of the following:

System message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification information, control format indication information CFI, time division duplex system configuration information, base station eNB support Maximum coverage enhancement level max CE level, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical random access channel PRACH configuration information, narrowband hopping Hopping configuration information, and other than the PRACH channel Channel radio resource configuration information, uplink frequency and bandwidth information, multicast broadcast single frequency network MBSFN subframe configuration information.
The apparatus of claim 19, further comprising:

a second sending module, configured to pass the indication information for indicating the one or more predetermined narrowband positions to a message information block MIB or system in the system information before transmitting the system information in one or more predetermined narrowband positions An information block SIB or a radio resource control RRC message is sent to the terminal.
A system information receiving device includes:

a second determining module configured to determine one or more predetermined narrowband positions;

And a receiving module configured to receive system information from the base station at the determined one or more predetermined narrowband locations.
The apparatus of claim 22, wherein the system information comprises at least one of the following:

System message change information, earthquake and tsunami warning system ETWS notification information, commercial mobile alert service CMAS, notification information, extended access control EAB parameter change notification information, control format indication information CFI, time division duplex system configuration information, base station eNB support Maximum coverage enhancement level max CE level, coverage enhancement level CE levels supported by the base station eNB, cell access related information, system message scheduling information, physical random access channel PRACH configuration information, narrowband hopping Hopping configuration information, and other than the PRACH channel Channel radio resource configuration information, uplink frequency and bandwidth information, multicast broadcast single frequency network MBSFN subframe configuration information.
The apparatus of claim 22, wherein the second determining module comprises one of:

a first determining unit, configured to receive, by using a message information block MIB or a system information block SIB or a radio resource control RRC message in the system information, indication information that is sent in advance by the base station to indicate the one or more predetermined narrowband positions, Determining the one or more predetermined narrowband locations according to the indication information;

A second determining unit is arranged to determine the location based on a pre-configured protocol for identifying the one or more predetermined narrowband locations.