CN108632952B - System information transmission method, device and equipment - Google Patents
System information transmission method, device and equipment Download PDFInfo
- Publication number
- CN108632952B CN108632952B CN201710179158.3A CN201710179158A CN108632952B CN 108632952 B CN108632952 B CN 108632952B CN 201710179158 A CN201710179158 A CN 201710179158A CN 108632952 B CN108632952 B CN 108632952B
- Authority
- CN
- China
- Prior art keywords
- system information
- base station
- broadcast
- terminal
- index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides a method, a device and equipment for transmitting system information, wherein the method comprises the following steps: the base station broadcasts the system information after scrambling by the system information message identification; or, the base station broadcasts the system information on a preset periodic time frequency resource. The process of obtaining the system information does not need the base station to unicast the position of the system information resource, so that the air interface resource can be saved, and the method and the device are simple and convenient to realize.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a device for transmitting system information.
Background
In existing LTE networks, cells periodically broadcast system information. The problem with periodic broadcasts is that: broadcasting system information infrequently (with long broadcast periods) can result in unacceptable delays and poor user experience. In order to ensure low system information receiving delay, a future network transmits system information in a terminal request mode. Namely: only when the terminal requests certain system information, the base station transmits the system information to the terminal in a unicast manner. However, the way in which the terminal requests the system information also has some problems, namely: when the number of terminals initiating a system information request is large, if the base station further transmits the system information to the terminals one by one in a unicast manner, the problem of low resource utilization efficiency is caused.
For this reason, the related art proposes a system information transmission manner in which unicast, point-to-point (ad-hoc) broadcast and periodic broadcast are combined. In short, when the terminal unicast request meets a certain threshold and does not reach the periodic broadcast time, the ad-hoc broadcast mode is adopted to reduce the time delay of receiving the system information. For the base station and the terminal, the system information acquisition process is more complex and difficult to implement (a network needs to support a mode of simultaneously broadcasting system information in unicast, ad-hoc broadcast and periodic broadcast). In addition, before the ad-hoc broadcast system information, the scheme informs the terminal of the time-frequency position of the ad-hoc broadcast system information in a unicast mode, and then the terminal can receive the ad-hoc broadcast system information at the specified time-frequency position. Therefore, the process of informing the resource position of the ad-hoc broadcast of each terminal by the base station in a unicast mode not only has high implementation complexity, but also increases the overhead of air interface resources.
Disclosure of Invention
In view of this, embodiments of the present invention are intended to provide a method, an apparatus, and a device for transmitting system information, which can save air interface resources and are simple and convenient to implement.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides a system information transmission method, which comprises the following steps:
and the base station broadcasts the system information after the scrambling of the system information message identification.
Wherein the system information message identification is related to at least:
a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
Optionally, the system information message identifier is further related to a time domain range for determining the number of the system information requests, or related to a starting time for determining the number of the system information requests.
Optionally, before the base station broadcasts the system information after the system information message identifier is scrambled, the method further includes:
the base station judges the number of received system information requests sent by the terminal, and sends the system information in a broadcasting mode when the number of the received system information requests is determined to be larger than or equal to a preset threshold value; otherwise, sending the system information in a unicast mode.
The embodiment of the invention also provides a system information transmission method, which comprises the following steps:
the base station broadcasts system information on a preset periodic time frequency resource.
Optionally, before the base station broadcasts the system information on the preset periodic time-frequency resource, the method further includes:
and the base station informs the terminal of the period and the Offset of the periodic time-frequency resource.
The base station broadcasts system information on a preset periodic time frequency resource, and the method comprises the following steps:
the base station broadcasts a plurality of different system information or all system information on the same preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the base station broadcasts different system information on different preset periodic time frequency resources, and the preset periodic time frequency resources correspond to the system information one to one; alternatively, the first and second electrodes may be,
the base station broadcasts system information on two or more continuous and preset periodic time frequency resources.
The embodiment of the invention also provides a system information transmission method, which comprises the following steps:
and the terminal receives the system information which is broadcasted by the base station and scrambled by the system information message identification.
The embodiment of the invention also provides a system information transmission method, which comprises the following steps:
and the terminal receives the system information broadcast by the base station on the preset periodic time frequency resource.
Optionally, before the terminal receives the system information broadcast by the base station on the preset periodic time-frequency resource, the method further includes:
and the terminal receives the period of the periodic time frequency resource and the Offset notified by the base station.
The embodiment of the invention also provides a system information transmission device, which comprises:
and the first sending unit is used for broadcasting the system information which is scrambled by the system information message identification.
Optionally, the apparatus further comprises:
the system comprises a judging and processing unit, a first sending unit and a second sending unit, wherein the judging and processing unit is used for judging the number of system information requests sent by a terminal, and informing the first sending unit of sending the system information in a broadcasting mode when the number of the system information requests is determined to be larger than or equal to a preset threshold value; otherwise, the first sending unit is informed to send the system information in a unicast mode.
The embodiment of the invention also provides a system information transmission device, which comprises:
and the second sending unit is used for broadcasting the system information on the preset periodic time frequency resource.
Optionally, before the second sending unit broadcasts the system information on the preset periodic time-frequency resource,
and is further configured to notify the terminal of the period and the Offset of the periodic time-frequency resource.
An embodiment of the present invention further provides a base station device, where the base station device includes: the system information transmitting apparatus described above.
The embodiment of the invention also provides a system information transmission device, which comprises:
and the first receiving unit is used for receiving the system information which is broadcasted by the base station and scrambled by the system information message identification.
The embodiment of the invention also provides a system information transmission device, which comprises:
and the second receiving unit is used for receiving the system information broadcasted by the base station on the preset periodic time frequency resource.
Optionally, before the second receiving unit receives the system information broadcast by the base station on the preset periodic time-frequency resource,
and is further configured to receive the period and Offset of the periodic time-frequency resource informed by the base station.
An embodiment of the present invention further provides a terminal device, where the terminal device includes: the system information transmitting apparatus described above.
The embodiment of the invention provides a system information transmission method, a device and equipment, wherein the method comprises the following steps: the base station broadcasts the system information after scrambling by the system information message identification; or, the base station broadcasts the system information on a preset periodic time frequency resource. The terminal of the embodiment of the invention can receive the system information broadcasted by the base station on the periodic time frequency resource or receive the system information scrambled by the system information message identification, and the position of the system information resource is issued without unicast of the base station in the process of obtaining the system information, thereby saving air interface resources.
Drawings
Fig. 1 is a first schematic flow chart of a system information transmission method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a system information transmission method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a system information transmission method according to an embodiment of the present invention;
fig. 4 is a first schematic structural diagram of a system information transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a system information transmission method according to an embodiment of the present invention;
fig. 6 is a fifth flowchart illustrating a system information transmission method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a system information transmission apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a system information transmission apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a receiving module according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a radio frame according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a radio frame structure corresponding to the base station broadcasting system information on a preset periodic time-frequency resource according to the embodiment of the present invention;
fig. 12 is a diagram illustrating a radio frame structure for transmitting SI messages in an SI window in the related art;
fig. 13 is a schematic diagram of a radio frame structure corresponding to the base station broadcasting scrambled system information according to the embodiment of the present invention.
Detailed Description
The invention is described below with reference to the figures and examples.
The embodiment of the invention provides a system information transmission method, which comprises the following steps:
step 101: the base station broadcasts system information on a preset periodic time frequency resource.
The terminal of the embodiment of the invention can receive the system information broadcasted by the base station on the periodic time frequency resource, and the position of the system information resource is not required to be issued by the base station in a unicast way in the process of acquiring the system information, thereby saving air interface resources.
In an embodiment, before the base station broadcasts the system information on the preset periodic time-frequency resource, as shown in fig. 1, the method further includes:
step 100: and the base station informs the terminal of the period and the Offset of the periodic time-frequency resource.
In the embodiment of the present invention, the informing, by the base station, the terminal of the period and the Offset of the periodic time-frequency resource includes:
and the base station informs the terminal of the period and the Offset of the periodic time-frequency resource in a Radio Resource Control (RRC) dedicated signaling or broadcasting mode.
In the embodiment of the present invention, the broadcasting, by the base station, system information on a preset periodic time-frequency resource includes:
the base station broadcasts a plurality of different system information or all system information on the same preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the base station broadcasts different system information on different preset periodic time frequency resources, and the preset periodic time frequency resources correspond to the system information one to one; alternatively, the first and second electrodes may be,
the base station broadcasts system information on two or more continuous and preset periodic time frequency resources.
An embodiment of the present invention further provides a system information transmission method, as shown in fig. 2, the method includes:
step 201: and the base station broadcasts the system information after the scrambling of the system information message identification.
The terminal of the embodiment of the invention can receive the system information scrambled by the system information message identifier, and the position of system information resource is not required to be issued by the base station unicast in the process of acquiring the system information, thereby saving air interface resources.
In the embodiment of the present invention, the system information message identifier is at least related to the following information:
a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
In one embodiment, the system information message identifier is further related to a time domain range for determining the number of system information requests, or a starting time for determining the number of system information requests.
Optionally, as shown in fig. 2, before the base station broadcasts the system information after being scrambled by the system information message identifier, the method further includes:
step 200: the base station judges the number of received system information requests sent by the terminal, and sends the system information in a broadcast mode when the number of the system information requests is determined to be larger than or equal to a preset threshold value (step 201); otherwise, sending the system information in a unicast mode.
The embodiment of the invention also provides a system information transmission method, which comprises the following steps:
step 301: and the terminal receives the system information broadcast by the base station on the preset periodic time frequency resource.
In an embodiment, before the terminal receives the system information broadcast by the base station on the preset periodic time-frequency resource, as shown in fig. 3, the method further includes:
step 300: and the terminal receives the period of the periodic time frequency resource and the Offset notified by the base station.
In the embodiment of the present invention, the receiving, by the terminal, system information broadcasted by the base station on a preset periodic time-frequency resource includes:
the terminal receives a plurality of different system information or all system information broadcasted by the base station on the same preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the terminal receives different system information broadcasted by the base station on different preset periodic time frequency resources, wherein the preset periodic time frequency resources correspond to the system information one to one; alternatively, the first and second electrodes may be,
and the terminal receives the system information broadcast by the base station on two or more continuous and preset periodic time frequency resources.
The embodiment of the invention also provides a system information transmission method, which comprises the following steps:
and the terminal receives the system information which is broadcasted by the base station and scrambled by the system information message identification.
Wherein the system information message identification is related to at least:
a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
In one embodiment, the system information message identifier is further related to a time domain range for determining the number of system information requests, or a starting time for determining the number of system information requests.
The embodiment of the present invention further provides a system information transmission apparatus, which is used to implement the foregoing embodiments and preferred embodiments, and the description of the system information transmission apparatus is omitted for brevity. As used below, the term "unit" may be a combination of software and/or hardware that implements a predetermined function. The device includes:
and the second sending unit is used for broadcasting the system information on the preset periodic time frequency resource.
In one embodiment, before the second sending unit broadcasts the system information on the preset periodic time frequency resource,
and is further configured to notify the terminal of the period and the Offset of the periodic time-frequency resource.
An embodiment of the present invention further provides a system information transmission apparatus, as shown in fig. 4, the apparatus includes:
a first sending unit 401, configured to broadcast the system information scrambled by the system information message identifier.
Wherein the system information message identification is related to at least:
a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
In one embodiment, the system information message identifier is further related to a time domain range for determining the number of system information requests, or a starting time for determining the number of system information requests.
In one embodiment, as shown in fig. 4, the apparatus further comprises:
a judgment processing unit 400, configured to judge the number of system information requests sent by a terminal, and notify the first sending unit to send the system information in a broadcast manner when the number of system information requests is determined to be greater than or equal to a preset threshold; otherwise, the first sending unit is informed to send the system information in a unicast mode.
An embodiment of the present invention further provides a base station device, where the base station device includes: the system information transmitting apparatus described above.
The embodiment of the invention also provides a system information transmission device, which is applied to a terminal side and comprises:
and the second receiving unit is used for receiving the system information broadcasted by the base station on the preset periodic time frequency resource.
In one embodiment, before the second receiving unit receives the system information broadcast by the base station on the preset periodic time-frequency resource,
and is further configured to receive the period and Offset of the periodic time-frequency resource informed by the base station.
The embodiment of the invention also provides a system information transmission device, which is applied to a terminal side and comprises:
and the first receiving unit is used for receiving the system information which is broadcasted by the base station and scrambled by the system information message identification.
Wherein the system information message identification is related to at least:
a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
In one embodiment, the system information message identifier is further related to a time domain range for determining the number of system information requests, or a starting time for determining the number of system information requests.
An embodiment of the present invention further provides a terminal device, where the terminal device includes: the system information transmission device is provided.
An embodiment of the present invention further provides a system information transmission method, as shown in fig. 5, the method includes:
step 501: the base station judges the number of the received system information requests and determines that the number of the system information requests is more than or equal to a preset threshold value;
step 502: the base station broadcasts system information on a preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the base station scrambles the system information according to the system information message identifier and broadcasts the scrambled system information; the system information message identification is related to at least the following information: a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
The terminal of the embodiment of the invention can receive the system information broadcasted by the base station on the periodic time frequency resource or receive the system information scrambled by the system information message identification, and the position of the system information resource is issued without unicast of the base station in the process of obtaining the system information, thereby saving air interface resources.
In this embodiment of the present invention, before the base station broadcasts the system information on the preset periodic time-frequency resource, the method further includes:
the base station informs the terminal of the period and the Offset of the periodic time-frequency resource in a Radio Resource Control (RRC) special signaling or broadcasting mode; alternatively, the first and second electrodes may be,
the base station informs the terminal of the period of the periodic time-frequency resource, the Offset and the broadcasting mode through a Radio Resource Control (RRC) special signaling or broadcasting mode; the broadcast mode is used for informing the terminal that the base station broadcasts the system information on a preset periodic time frequency resource or broadcasts the system information on two or more continuous preset periodic time frequency resources.
Therefore, the time-frequency position of the broadcast system information does not need to be informed to the terminal in a unicast mode like the related technology, and therefore air interface resources can be saved.
In the embodiment of the present invention, the broadcasting, by the base station, system information on a preset periodic time-frequency resource includes:
the base station broadcasts a plurality of different system information or all system information on the same preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the base station broadcasts different system information on different preset periodic time frequency resources, and the preset periodic time frequency resources correspond to the system information one to one.
In this embodiment of the present invention, when the base station broadcasts a plurality of different system information on the same preset periodic time-frequency resource, the method further includes:
and the base station scrambles the preset periodic time frequency resource by adopting the marks of the different system information and is used for informing the terminal of the system information transmitted on the preset periodic time frequency resource. Therefore, the terminal knows which system information is broadcast on the preset periodic time frequency resource, and the terminal without corresponding requirements can not monitor the preset periodic time frequency resource.
In the embodiment of the present invention, the determining, by the base station, the number of received system information requests, and broadcasting, by the base station, system information on a preset periodic time-frequency resource include:
the base station judges the number of the received system information requests on each wireless frame, and broadcasts the system information on a preset periodic time frequency resource behind (for example: the first) the current wireless frame when the number of the system information requests is determined to be more than or equal to a preset threshold value.
In the embodiment of the present invention, the system information message identifier is set as: the Group ID is calculated by the following method:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
In the embodiment of the present invention, the system information message identifier is further related to a time domain range for determining the number of the system information requests, or related to a start time for determining the number of the system information requests.
Optionally, to avoid resource waste, when the base station does not need to send system information on the preset periodic time-frequency resource, the base station may dynamically schedule the preset periodic time-frequency resource to perform transmission of other information.
An embodiment of the present invention further provides a system information transmission method, as shown in fig. 6, the method includes:
step 601: a terminal sends a system information request to a base station;
step 602: the terminal receives system information broadcast by the base station on a preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the terminal receives system information which is broadcasted by a base station and scrambled by a system information message identifier; the system information message identification is related to at least the following information: a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
The terminal of the embodiment of the invention can receive the system information broadcasted by the base station on the periodic time frequency resource or receive the system information scrambled by the system information message identification, and the position of the system information resource is issued without unicast of the base station in the process of obtaining the system information, thereby saving air interface resources.
In this embodiment of the present invention, before the terminal receives the system information broadcasted by the base station on the preset periodic time-frequency resource, the method further includes:
the terminal receives the period and Offset of the periodic time-frequency resource informed by the base station through a Radio Resource Control (RRC) dedicated signaling or a broadcasting mode; alternatively, the first and second electrodes may be,
the terminal receives the period of the periodic time frequency resource, the Offset and the broadcasting mode which are informed by the base station through a Radio Resource Control (RRC) special signaling or a broadcasting mode; the broadcast mode is used for informing the terminal that the base station broadcasts the system information on a preset periodic time frequency resource or broadcasts the system information on two or more continuous preset periodic time frequency resources.
Therefore, the time-frequency position of the broadcast system information informed by the base station in a unicast mode does not need to be received, and air interface resources can be saved.
In the embodiment of the present invention, the receiving, by the terminal, system information broadcasted by the base station on a preset periodic time-frequency resource includes:
the terminal receives a plurality of different system information or all system information broadcasted by the base station on the same preset periodic time frequency resource; alternatively, the first and second electrodes may be,
the terminal receives different system information broadcasted by the base station on different preset periodic time frequency resources, and the preset periodic time frequency resources correspond to the system information one to one.
In this embodiment of the present invention, when the terminal receives multiple different system information broadcasted by the base station on the same preset periodic time-frequency resource, the method further includes:
and the terminal descrambles the scrambled periodic time frequency resource of the base station to obtain the system information transmitted on the periodic time frequency resource. Therefore, the terminal knows which system information is broadcast on the preset periodic time frequency resource, and the terminal without corresponding requirements can not monitor the preset periodic time frequency resource.
In the embodiment of the present invention, the receiving, by the terminal, the system information scrambled by the system information message identifier broadcasted by the base station includes:
the terminal calculates a system information message identifier set according to the identifier of the system information and the identifier of the base station service cell which are pre-obtained by the terminal, and by combining the total number of the system information and the identifiers of all the system information;
and the terminal monitors the scrambled system information broadcasted by the base station, and descrambles the scrambled system information corresponding to the system information message identifier by using the system information message identifier in the system information message identifier set until the system information required by the terminal is obtained.
The method for calculating the Group ID of each system information message identifier in the system information message identifier set comprises the following steps:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; the SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station;
and setting the identifier of the system information pre-acquired by the terminal as m, wherein m is more than or equal to 0 and less than N, and enabling SI _ index (m) to be always equal to 1 in the process of calculating the identifier of each system information message.
The embodiment of the present invention further provides a system information transmission apparatus, which is used to implement the foregoing embodiments and preferred embodiments, and the description of the system information transmission apparatus is omitted for brevity. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. As shown in fig. 7, the apparatus includes:
a judging module 701, configured to judge the number of received system information requests, and trigger a transmission module when it is determined that the number of system information requests is greater than or equal to a preset threshold;
a transmission module 702, configured to broadcast system information on a preset periodic time-frequency resource after being triggered by the determination module; or scrambling the system information according to the system information message identifier, and broadcasting the scrambled system information;
the system information message identification is related to at least the following information: a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
In the embodiment of the present invention, before the transmission module 702 broadcasts the system information on the preset periodic time frequency resource,
the terminal is also used for informing the terminal of the period and the Offset of the periodic time-frequency resource in a Radio Resource Control (RRC) special signaling or broadcasting mode; alternatively, the first and second electrodes may be,
the terminal is also used for informing the period of the periodic time-frequency resource, the Offset and the broadcasting mode to the terminal by a Radio Resource Control (RRC) special signaling or broadcasting mode; the broadcast mode is used for informing the terminal that the base station broadcasts the system information on a preset periodic time frequency resource or broadcasts the system information on two or more continuous preset periodic time frequency resources.
In this embodiment of the present invention, the transmission module 702 is configured to broadcast a plurality of different system information or all system information on the same preset periodic time-frequency resource; alternatively, the first and second electrodes may be,
the system information broadcast method is used for broadcasting different system information on different preset periodic time frequency resources, and the preset periodic time frequency resources correspond to the system information one to one.
In the embodiment of the present invention, when the transmission module 702 broadcasts a plurality of different system information on the same preset periodic time-frequency resource,
and the terminal is further configured to scramble the preset periodic time-frequency resource by using the identifiers of the plurality of different pieces of system information, and is configured to notify the terminal of the system information transmitted on the preset periodic time-frequency resource.
In this embodiment of the present invention, the broadcasting system information by the transmission module 702 on a preset periodic time-frequency resource includes:
broadcasting system information on a preset periodic time frequency resource, and informing a terminal of a current broadcasting mode through an RRC (radio resource control) special signaling; alternatively, the first and second electrodes may be,
the system information is broadcasted on two or more continuous and preset periodic time frequency resources, and the current broadcasting mode is informed to the terminal through RRC special signaling.
In the embodiment of the present invention, the system information message identifier is set as: the Group ID is calculated by the following method:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
In the embodiment of the present invention, the system information message identifier is further related to a time domain range for determining the number of the system information requests, or related to a start time for determining the number of the system information requests.
An embodiment of the present invention further provides another system information transmission apparatus, as shown in fig. 8, the apparatus includes:
a sending module 801, configured to send a system information request to a base station;
a receiving module 802, configured to receive system information broadcast by a base station on a preset periodic time-frequency resource; or, the system information is used for receiving the system information which is broadcasted by the base station and scrambled by the system information message identifier; the system information message identification is related to at least the following information: a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
In the embodiment of the present invention, before the receiving module 802 receives the system information broadcasted by the base station on the preset periodic time-frequency resource,
the base station is also used for receiving the period and Offset of the periodic time-frequency resource, which are informed by the base station through Radio Resource Control (RRC) proprietary signaling or broadcasting; alternatively, the first and second electrodes may be,
the base station is also used for receiving the period and Offset of the periodic time-frequency resource and the broadcasting mode informed by the base station through a Radio Resource Control (RRC) dedicated signaling or broadcasting mode; the broadcast mode is used for informing the terminal that the base station broadcasts the system information on a preset periodic time frequency resource or broadcasts the system information on two or more continuous preset periodic time frequency resources.
In this embodiment of the present invention, the receiving module 802 receives system information broadcast by a base station on a preset periodic time-frequency resource, which includes:
receiving a plurality of different system information or all system information broadcasted by a base station on the same preset periodic time frequency resource; alternatively, the first and second electrodes may be,
and receiving different system information broadcasted by the base station on different preset periodic time frequency resources, wherein the preset periodic time frequency resources correspond to the system information one to one.
In the embodiment of the present invention, when the receiving module 802 receives a plurality of different system information broadcasted by a base station on the same preset periodic time frequency resource,
and the base station is further configured to descramble the scrambled periodic time-frequency resource of the base station to obtain the system information transmitted on the predetermined periodic time-frequency resource.
In this embodiment of the present invention, the receiving module 802 receives system information broadcast by a base station on a preset periodic time-frequency resource, which includes:
receiving system information broadcasted by the base station on a preset periodic time frequency resource based on a current broadcasting mode informed by the base station through an RRC (radio resource control) proprietary signaling; alternatively, the first and second electrodes may be,
and receiving the system information broadcasted by the base station on two or more continuous and preset periodic time frequency resources based on the current broadcasting mode informed by the base station through the RRC dedicated signaling.
In this embodiment of the present invention, as shown in fig. 9, the receiving module 802 includes:
a calculating unit 8021, configured to calculate a system information message identifier set according to a pre-obtained identifier of the system information, an identifier of a serving cell of the base station, and a total number of the system information and identifiers of all the system information;
a descrambling acquisition unit 8022, configured to monitor scrambled system information broadcast by the base station, and descramble the scrambled system information corresponding to the system information identifier by using the system information identifier in the system information identifier set until the system information required by the terminal is obtained.
The method for calculating the Group ID of each system information message identifier in the system information message identifier set comprises the following steps:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; the SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station;
and setting the identifier of the system information pre-acquired by the terminal as m, wherein m is more than or equal to 0 and less than N, and enabling SI _ index (m) to be always equal to 1 in the process of calculating the identifier of each system information message.
An embodiment of the present invention further provides a base station device, where the base station device includes: the system information transmission apparatus illustrated in fig. 7.
An embodiment of the present invention further provides a terminal device, where the terminal device includes: the system information transmission apparatus described in fig. 8 or fig. 9. The terminal device may be a mobile phone, a Personal Digital Assistant (PDA), a smart hand held device (mart hand held device), a laptop computer (laptop computer), a tablet computer, or the like.
The present invention is described below with reference to specific scenario embodiments.
The system information transmission method provided in this embodiment may specifically include the following steps:
the method comprises the following steps: a base station receives a system information request sent by a terminal and performs quantity statistics;
here, the terminal sends a system information request for indicating certain system information that the base station terminal desires to obtain, and the request needs to carry a system information number. The system information request may be notified to the base station through RRC dedicated signaling or may be notified to the base station through MAC CE.
The method for the base station to receive the system information request and perform statistics includes but is not limited to:
the first method is as follows: the base station receives and counts the request quantity in a fixed time range, and the base station counts the request density;
the second method comprises the following steps: the base station receives and counts the number of requests in a non-fixed time range, and the base station counts the number of the requests at the moment.
Step two: the base station judges whether the statistical result of the system information request quantity exceeds (is more than or equal to) a preset threshold, and determines a system information issuing mode according to the judgment result:
if the statistical result of the request quantity exceeds a preset threshold Th, starting a system information broadcasting mode; and if the statistical result of the request quantity does not exceed the preset threshold Th, responding to the system information requested by the terminal in a unicast mode.
Step three: the base station may broadcast the system information in two ways:
the first method is as follows: the base station pre-configures a pattern resource (i.e. the preset periodic time-frequency resource), and sends system information on the pattern resource:
here, the Pattern resource is a periodic time-frequency resource, and the base station needs to inform the terminal of the period and the offset (offset) of the Pattern resource in advance through RRC dedicated signaling or broadcasting (e.g., through other system information), and issue a radio frame structure corresponding to the system information as shown in fig. 10.
The pattern resource may be specific to a certain piece of system information (one pattern resource corresponds to a piece of specific system information), or may be shared and used by a plurality of pieces of system information. When the pattern resource is shared by a plurality of system information, the pattern resource for sending the system information needs to be scrambled by a corresponding system information number (identification), so that the terminal knows which system information is broadcast on the resource, and the terminal without corresponding requirement can not monitor the resource.
Optionally, to avoid resource waste, when the base station does not need to send system information on the pattern resource, the base station may dynamically schedule the pattern resource.
Optionally, the base station may send the system information on the pattern resource, or may send the system information on a plurality of consecutive pattern resources. Correspondingly, the base station needs to inform the terminal of the issuing mode (whether one pattern resource or multiple continuous pattern resources) through RRC dedicated signaling, so that the terminal can monitor on the corresponding resources.
It should be noted that some terminals may not initiate a system information request, but may still receive system information on the pattern resource.
As shown in fig. 11, the bs counts the system information request sent by the terminal at each radio frame SFN (system frame number), and when the broadcast system information condition is satisfied, the bs may issue the system information on the first pattern resource behind the current radio frame SFN.
As known in the related art, in the LTE system, the system information may be divided into a Master Information Block (MIB) and a plurality of System Information Blocks (SIBs), where each system information includes a series of parameter sets related to a certain function.
The MIB is sent on the PBCH in a cycle of 40ms, and is repeated for 4 times in the cycle of 40ms, and time-frequency resources are fixed;
SIB1 is transmitted on PDSCH at a period of 80ms, and the same SIB1 is repeatedly transmitted on system frame subframe 5 where SFN% 2 is 0 in this period. The position of SIB1 in the time domain is fixed, but the position in the frequency domain may vary and is indicated by the corresponding PDCCH;
with the exception of MIB and SIB1, SIBs with the same scheduling requirements (i.e., with the same transmission period) need to be mapped to and sent in System Information (SI) messages. One SI message may carry one or more System Information Blocks (SIBs). For example: SIBs with both transmission periods of 160ms may be placed in the same SI message, and other SIBs with a transmission period of 320ms must be placed in a different SI message. Each SI message is transmitted in only one SI window, as shown in fig. 12: (1) one SI message corresponds to one SI window, the SI window can only send the SI message and can be sent repeatedly, but can not send other SI messages, the time frequency position is indicated by corresponding PDCCH; (2) the SI windows are closely adjacent and are not overlapped, and no gap exists; (3) the lengths of SI windows corresponding to all the SI messages are the same; (4) the periods of different SI messages are independent of each other.
The second method comprises the following steps: the base station scrambles the system information based on the Group ID (i.e. the system information message identifier described above), and broadcasts the scrambled system information:
here, the system information is scrambled with a Group ID, which is associated with at least an identifier (one or a plurality (one Group)) of the system information and a base station serving Cell identifier Cell ID. The radio frame structure corresponding to the broadcast system information is shown in fig. 13.
Optionally, the Group ID may also be associated with a time domain range (such as SFN number) where the base station counts the number of system information requests or a counting start time (such as SFN number and subframe number).
The Group ID calculation method comprises the following steps:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
For the terminal, the terminal calculates a system information message identifier set Group ID set according to the identifier of the system information and the identifier of the base station serving cell which are pre-obtained by the terminal, and by combining the total number of the system information and the identifiers of all the system information; the Group ID set comprises all Group ID sets which can contain system information requested by the terminal; then, the terminal needs to monitor all Group ID scrambled system information in the Group ID set, determine that the Group ID corresponding to the scrambled system information is the same as one Group ID in the Group ID set, and descramble the scrambled system information corresponding to the Group ID by using the Group ID to obtain the system information requested by the terminal.
The method for calculating the Group ID is further described below with reference to a specific example.
The Group ID in this example is related to a system information identity (type), a serving Cell identity Cell ID. When the condition of broadcasting the system information is satisfied, the base station may calculate a Group ID by using the system information identifier and the serving cell identifier, and scramble the system information and broadcast by using the Group ID as follows. The calculation formula of the Group ID can be:
where N is the total number of system information, and SI _ index (N) indicates whether system information N is broadcasted by the base station (0. ltoreq. N < N). For example: SI _ index (n) ═ 1 indicates that system information n is broadcast, and SI _ index (n) ═ 0 indicates that system information n is not broadcast. When Cell ID 503 is broadcasted together with system information 0 and system information 2, and other system information is not broadcasted, the calculated Group ID 1000 (1+4) +503 5503.
For a terminal, setting the identifier of the system information pre-obtained by the terminal as m, where m is greater than or equal to 0 and less than N, and making SI _ index (m) always equal to 1 in the process of calculating the identifier of each system information message. Assuming that the total number of system information is 3, n is 0, 1, 2, respectively. The system information requested by the terminal is n-2-m, so the Group ID set calculated by the terminal is {4503, 5503, 6503, 7503}, and all Group IDs in the Group ID set are monitored until the system information requested by the terminal is received through the Group ID 5503.
As known from the related art, in the LTE system, the SI message is used to carry one or more System Information Blocks (SIBs) having the same scheduling requirement (i.e., having the same transmission period). Each SI message is transmitted in a corresponding SI window, but the SI messages need not be transmitted on consecutive subframes within the time window. The UE knows whether an SI message exists on a certain subframe through the PDCCH scrambled by the SI-RNTI. In an LTE system, all SI messages correspond to the same SI-RNTI, or a pre-configured SI-RNTI is allocated to each SI message.
In the embodiment of the invention, the concept of a system information Group (comprising a plurality of system information) corresponds to the concept of SI information in an LTE system, and the concept of Group ID corresponds to the concept of SI-RNTI. The embodiment of the invention is different from the related technology in that: firstly, the SI message is not sent through the SI window, but is sent on a fixed time-frequency resource (such as mode one) or a dynamic scheduling resource (such as mode two); and secondly, the Group ID may not be pre-configured and can be obtained by the base station and the terminal through calculation and inference of a formula.
The terminal of the embodiment of the invention can receive the system information broadcasted by the base station on the periodic time frequency resource or receive the system information scrambled by the system information message identification, and the position of the system information resource is issued without unicast of the base station in the process of obtaining the system information, thereby saving air interface resources.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for system information transmission, the method comprising:
the base station broadcasts the system information after scrambling by the system information message identification; wherein the content of the first and second substances,
the system information message identifier is set to: the Group ID is calculated by the following method:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
2. The method of claim 1, wherein the system information message identification is related to at least the following information:
a base station serving cell identifier, and an identifier of system information currently broadcast by the base station.
3. The method according to claim 1 or 2, wherein the system information message identifier is further related to a time domain range for determining the number of system information requests or a starting time for determining the number of system information requests.
4. The method of claim 1, wherein before the base station broadcasts the scrambled system information identified by the system information message, the method further comprises:
the base station judges the number of received system information requests sent by the terminal, and sends the system information in a broadcasting mode when the number of the received system information requests is determined to be larger than or equal to a preset threshold value; otherwise, sending the system information in a unicast mode.
5. A method for system information transmission, the method comprising:
a terminal receives system information which is broadcasted by a base station and scrambled by a system information message identifier; wherein the content of the first and second substances,
the system information message identifier is set to: the Group ID is calculated by the following method:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
6. A system information transmission apparatus, comprising:
a first transmitting unit, configured to broadcast the system information scrambled by the system information message identifier; wherein the content of the first and second substances,
the system information message identifier is set to: the Group ID is calculated by the following method:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
7. The apparatus of claim 6, further comprising:
the system comprises a judging and processing unit, a first sending unit and a second sending unit, wherein the judging and processing unit is used for judging the number of system information requests sent by a terminal, and informing the first sending unit of sending the system information in a broadcasting mode when the number of the system information requests is determined to be larger than or equal to a preset threshold value; otherwise, the first sending unit is informed to send the system information in a unicast mode.
8. A system information transmission apparatus, comprising:
the first receiving unit is used for receiving the system information which is broadcasted by the base station and scrambled by the system information message identification; wherein the content of the first and second substances,
the system information message identifier is set to: the Group ID is calculated by the following method:
wherein, the N is the total number of the system information; n is the mark of system information, and N is more than or equal to 0 and less than N; the Cell ID is a base station service Cell identifier; SI _ index (n) indicates whether system information is broadcast by the base station, SI _ index (n) ═ 1 indicates that system information n is broadcast by the base station, and SI _ index (n) ═ 0 indicates that system information n is not broadcast by the base station.
9. A base station apparatus, characterized in that the base station apparatus comprises: the system information transmission apparatus of claim 6 or 7.
10. A terminal device, characterized in that the terminal device comprises: the system information transmission apparatus of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179158.3A CN108632952B (en) | 2017-03-23 | 2017-03-23 | System information transmission method, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179158.3A CN108632952B (en) | 2017-03-23 | 2017-03-23 | System information transmission method, device and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108632952A CN108632952A (en) | 2018-10-09 |
| CN108632952B true CN108632952B (en) | 2021-01-15 |
Family
ID=63706475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710179158.3A Active CN108632952B (en) | 2017-03-23 | 2017-03-23 | System information transmission method, device and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108632952B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654872B (en) * | 2019-03-04 | 2022-04-08 | 大唐移动通信设备有限公司 | Information processing method, device, equipment and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378129A (en) * | 2010-08-16 | 2012-03-14 | 中国移动通信集团公司 | Method for transmitting and receiving system message, device and equipment thereof |
| CN104980248A (en) * | 2014-04-08 | 2015-10-14 | 华为技术有限公司 | Information transmission method, base station, user equipment and communication system |
| CN106170961A (en) * | 2014-04-21 | 2016-11-30 | Lg 电子株式会社 | The method and apparatus supporting different districts scope according to modulation in wireless communication system |
| CN106233804A (en) * | 2014-04-24 | 2016-12-14 | Lg电子株式会社 | The method and apparatus determining maximum upper limit link transmission power in a wireless communication system |
| CN106341896A (en) * | 2015-07-07 | 2017-01-18 | 电信科学技术研究院 | Data transmission method, equipment and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101953216B1 (en) * | 2011-11-11 | 2019-02-28 | 삼성전자주식회사 | Method and apparatus for transmiting system information in mobile communucation system |
| US9794861B2 (en) * | 2013-03-31 | 2017-10-17 | Tejas Networks Limited | System information message communication by dynamic segmenting of SI messages in a wireless communication system |
| US10200920B2 (en) * | 2015-02-10 | 2019-02-05 | Qualcomm Incorporated | On-demand system information |
-
2017
- 2017-03-23 CN CN201710179158.3A patent/CN108632952B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378129A (en) * | 2010-08-16 | 2012-03-14 | 中国移动通信集团公司 | Method for transmitting and receiving system message, device and equipment thereof |
| CN104980248A (en) * | 2014-04-08 | 2015-10-14 | 华为技术有限公司 | Information transmission method, base station, user equipment and communication system |
| CN106170961A (en) * | 2014-04-21 | 2016-11-30 | Lg 电子株式会社 | The method and apparatus supporting different districts scope according to modulation in wireless communication system |
| CN106233804A (en) * | 2014-04-24 | 2016-12-14 | Lg电子株式会社 | The method and apparatus determining maximum upper limit link transmission power in a wireless communication system |
| CN106341896A (en) * | 2015-07-07 | 2017-01-18 | 电信科学技术研究院 | Data transmission method, equipment and system |
Non-Patent Citations (2)
| Title |
|---|
| Discussion on the need of additional broadcast indication for On demand SI;Xiaomi;《3GPP TSG-RAN WG2 #97》;20170202;全文 * |
| On-demand System Information Acquisition;MediaTek Inc;《3GPP TSG-RAN2 #95 Meeting》;20160812;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108632952A (en) | 2018-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10945235B2 (en) | Mobile communication system | |
| CN109155941B (en) | Communication method and device | |
| US10178536B2 (en) | Update indication information | |
| EP3337199B1 (en) | Resource configuration method, system, and device for single-cell multicast control channel (sc-mcch) | |
| CN109644325B (en) | System and method for providing Multimedia Broadcast Multicast Service (MBMS) operation | |
| US11178663B2 (en) | Data transmission method and device | |
| EP3324666B1 (en) | Sc-mcch resource configuration method and apparatus | |
| US20120182921A1 (en) | Wireless communication system, base station apparatus, mobile station apparatus, and communication method | |
| EP3051847B1 (en) | Group communication method, device and system | |
| US20080233974A1 (en) | Multimedia broadcast and multicast service notification in long term evolution | |
| US9072070B2 (en) | Mobile wireless devices and methods of operation | |
| KR20130014596A (en) | Methods for requesting and feeding back multimedia broadcast multicast service(mbms) state | |
| TW201804868A (en) | System information transmission method, user terminal, network side device, system and storage medium | |
| CN110932833A (en) | Information transmission method and device | |
| CN108370557B (en) | Method and apparatus for operating resources in wireless communication system | |
| WO2011018037A1 (en) | Method, apparatus and system for configuring multimedia broadcast multicast service (mbms) control information | |
| CN113840241A (en) | Communication method and communication device | |
| TW201325291A (en) | A method of resource scheduling used for machine type communications | |
| JP6526212B2 (en) | Paging message transmission method, paging message receiving method, and device | |
| CN113498026A (en) | Communication method and related equipment | |
| US20160013977A1 (en) | Service Processing Method for New Carrier Type Cell, Apparatus, and Communications System | |
| CN102170610B (en) | Indication information transmission method, system and device, and multimedia broadcast multicast service (MBMS) receiving method, system and device | |
| CN108632952B (en) | System information transmission method, device and equipment | |
| CN116325817A (en) | Method and apparatus for radio communication | |
| CN105472569B (en) | Method and device for allocating and processing subframe resources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |