CN106851840A - One kind sends critical system information methods, devices and systems - Google Patents
One kind sends critical system information methods, devices and systems Download PDFInfo
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- CN106851840A CN106851840A CN201710178738.0A CN201710178738A CN106851840A CN 106851840 A CN106851840 A CN 106851840A CN 201710178738 A CN201710178738 A CN 201710178738A CN 106851840 A CN106851840 A CN 106851840A
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- 238000004891 communication Methods 0.000 abstract description 12
- 238000012545 processing Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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Abstract
Present disclose provides a kind of methods, devices and systems for sending critical system information, belong to communication technical field.Methods described includes：Whenever the first predetermined period is reached, base station obtains Part II critical system information；The base station sends the Part II critical system information by the default time/frequency source block in Physical Downlink Shared Channel PDSCH.Using the disclosure, terminal can be made to get Part II critical system information.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for sending key system information.
Background
When a terminal is in a Radio Resource Control CONNECTED (RRC _ CONNECTED) state and is switched from a current cell to another cell or when the terminal is switched from the RRC _ IDLE state to the RRC _ CONNECTED state, the terminal needs to initiate a random access request to a base station, and before the terminal randomly accesses the base station, the terminal needs to acquire key system information for random access, and a general base station periodically broadcasts the key system information.
Currently, in the standard discussion of 3GPP, the key system information is divided into two parts, namely, a first part of key system information and a second part of key system information, where the first part of key system information includes a system frame number, a system bandwidth, the number of antenna ports, and the like, and the second part of key system information includes cell access related information, common radio resource configuration information, and the like. Generally, a base station may send key system information through a PBCH (Physical Broadcast Channel), but since the PBCH has a limited capacity, it is very likely that after a first part of key system information is put down, a second part of key system information is not put down, so that a terminal cannot acquire the second part of key system information.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a method, apparatus, and system for transmitting critical system information. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a method of transmitting critical system information, the method including:
when a first preset period is reached, the base station acquires a second part of key system information;
and the base station sends the second part of key system information through a preset time-frequency resource block positioned in a Physical Downlink Shared Channel (PDSCH).
Optionally, the method further includes:
the base station acquires a first part of key system information when a second preset period is reached, wherein the second preset period is smaller than the first preset period;
and the base station sends resource scheduling information of the first part of key system information and the second part of key system information through a Physical Broadcast Channel (PBCH), wherein the resource scheduling information comprises time domain information of the time frequency resource block, and the time domain information is a symbol identifier of the time frequency resource block.
Thus, the time-frequency resource block can be used more flexibly.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block, where the frequency domain information is a frequency range of the time-frequency resource block.
Thus, the time-frequency resource block can be used more flexibly.
According to a second aspect of the embodiments of the present disclosure, there is provided a method of transmitting critical system information, the method including:
and when the first preset period is reached, the terminal receives the second part of key system information on a preset time-frequency resource block in the PDSCH.
Optionally, the method further includes:
and when a second preset period is reached, the terminal receives resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on a PBCH (physical broadcast channel), wherein the resource scheduling information comprises time domain information of the time frequency resource block.
Optionally, when the first preset period is reached, the terminal receives a second part of key system information on a time-frequency resource block preset in the PDSCH, including:
and when a first preset period is reached, the terminal receives a second part of key system information based on the time domain information and pre-stored frequency domain information of the second part of key system information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
In this way, transmission resources can be saved.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block;
when the first preset period is reached, the terminal receives a second part of key system information on a time frequency resource block preset in the PDSCH, including:
and when a first preset period is reached, the terminal receives second part of key system information based on time domain information and frequency domain information included in the resource scheduling information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Thus, the time-frequency resource block can be used more flexibly.
Optionally, the time domain information is a symbol identifier of the time frequency resource block, and the frequency domain information is a frequency range of the time frequency resource block.
Optionally, the frequency range is a frequency range with a center frequency of the carrier as a middle value; or,
the frequency range is a frequency range in which the center frequency of the carrier is an upper limit value; or,
the frequency range is a frequency range in which the center frequency of the carrier wave is a lower limit value.
According to a third aspect of the embodiments of the present disclosure, there is provided a base station, including:
the acquisition module is used for acquiring the second part of key system information when a first preset period is reached;
and the sending module is used for sending the second part of key system information through a preset time-frequency resource block in a Physical Downlink Shared Channel (PDSCH).
Optionally, the obtaining module is further configured to:
acquiring a first part of key system information when a second preset period is reached, wherein the second preset period is smaller than the first preset period;
the sending module is configured to send resource scheduling information of the first part of key system information and the second part of key system information through a physical broadcast channel PBCH, where the resource scheduling information includes time domain information of the time-frequency resource block, and the time domain information is a symbol identifier of the time-frequency resource block.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block, where the frequency domain information is a frequency range of the time-frequency resource block.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a terminal, including:
and the receiving module is used for receiving the second part of key system information on a preset time-frequency resource block in the PDSCH when the first preset period is reached.
Optionally, the receiving module is further configured to:
and receiving resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on a PBCH (physical broadcast channel) when a second preset period is reached, wherein the resource scheduling information comprises time domain information of the time frequency resource block.
Optionally, the receiving module is configured to:
and receiving a second part of key system information based on the time domain information and pre-stored frequency domain information of the second part of key system information when a first preset period is reached, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block;
the receiving module is configured to:
and receiving second part of key system information based on time domain information and frequency domain information included in the resource scheduling information when a first preset period is reached, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Optionally, the time domain information is a symbol identifier of the time frequency resource block, and the frequency domain information is a frequency range of the time frequency resource block.
Optionally, the frequency range is a frequency range with a center frequency of the carrier as a middle value; or,
the frequency range is a frequency range in which the center frequency of the carrier is an upper limit value; or,
the frequency range is a frequency range in which the center frequency of the carrier wave is a lower limit value.
According to a fifth aspect of the embodiments of the present disclosure, there is provided a base station, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
acquiring a second part of key system information when a first preset period is reached;
and sending the second part of key system information through a preset time-frequency resource block positioned in a Physical Downlink Shared Channel (PDSCH).
According to a sixth aspect of the embodiments of the present disclosure, there is provided a terminal, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
and receiving a second part of key system information on a time frequency resource block preset in the PDSCH every time the first preset period is reached.
According to a seventh aspect of the embodiments of the present disclosure, there is provided a system for transmitting critical system information, the system including a base station and a terminal, wherein:
the base station is used for acquiring a second part of key system information when a first preset period is reached; sending the second part of key system information through a preset time-frequency resource block in a Physical Downlink Shared Channel (PDSCH);
and the terminal is used for receiving the second part of key system information on a preset time-frequency resource block in the PDSCH when the first preset period is reached.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, the base station acquires the second part of key system information whenever the base station reaches the first preset period, and sends the second part of key system information through the preset time-frequency resource block located in the PDSCH, and the terminal receives the second part of key system information on the preset time-frequency resource block located in the PDSCH whenever the base station reaches the first preset period. In this way, the second part of key system information is sent on the preset time frequency resource block located in the PDSCH, and the terminal can receive the second part of key system information on the preset time frequency resource block, so that the terminal can acquire the second part of key system information.
In the disclosed embodiments, it is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings:
FIG. 1 is a schematic diagram illustrating a system for transmitting critical system information in accordance with an illustrative embodiment;
FIG. 2 is a flow diagram illustrating a method of transmitting critical system information in accordance with an example embodiment;
FIG. 3 is a diagram illustrating a time-frequency resource block in accordance with an illustrative embodiment;
FIG. 4 is a diagram illustrating a time-frequency resource block in accordance with an illustrative embodiment;
FIG. 5 is a block diagram illustrating a base station in accordance with an exemplary embodiment;
FIG. 6 is a block diagram illustrating a terminal in accordance with an exemplary embodiment;
FIG. 7 is a block diagram illustrating a base station in accordance with an example embodiment;
fig. 8 is a block diagram of a terminal according to an example embodiment.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the present disclosure provides a method for sending key system information, as shown in fig. 1, the method may be implemented by a terminal and a base station together. The terminal is a mobile phone or the like, a processor, a transceiver, a memory and the like are arranged in the terminal, the processor can be used for executing relevant processing of sending key system information, the transceiver can be used for receiving and sending data, and the memory can be used for storing data received in the process of sending the key system information and possibly generated data. The base station is provided with a processor, a transceiver, a memory and the like, wherein the processor can be used for executing relevant processing of transmitting the key system information, the transceiver can be used for receiving and transmitting data, and the memory can be used for storing the data received and possibly generated in the process of transmitting the key system information.
As shown in fig. 2, the processing flow of the method may include the following steps:
in step 201, the base station acquires a second part of key system information each time a first preset period is reached.
Wherein the first preset period may be set by a technician and stored in the base station, such as 80 ms. The second part of key system information comprises cell access related information, public wireless resource configuration information and the like.
In implementation, the base station may continuously detect whether the first preset period is reached, and may acquire the current second part of the key system information each time the first preset period is reached. For example, the first preset period is 80ms, and the base station may acquire the current second part of the critical system information every 80 ms.
In step 202, the base station transmits the second part of key system information through a preset time-frequency resource block located in the PDSCH.
In implementation, the base station may map the second part of the key system information to a preset time-frequency resource block in a PDSCH (Physical downlink shared channel), and then send the second part of the key system information in a beam scanning manner. For example, as shown in fig. 3, when the PDSCH occupies the last five symbols in one RB (Resource Block ), the technician may set the time-frequency Resource blocks of the last two symbols in one RB as preset time-frequency Resource blocks, and the base station may send the second part of key system information to the terminal through the time-frequency Resource blocks of the last two symbols in one RB.
It should be noted that the preset time-frequency resource block in the PDSCH belongs to a subframe determined in a preset radio frame. The time frequency resource block preset in the PDSCH can be used for the base station to transmit data to the terminal, etc. when the second part of key system information is not transmitted.
In step 203, the terminal receives a second part of key system information on a time-frequency resource block preset in the PDSCH every time the first preset period is reached.
In implementation, after the terminal is powered on, the terminal may detect the primary synchronization signal and the secondary synchronization signal to obtain accurate time-frequency synchronization with a cell, perform channel demodulation on a time-frequency resource block located in the PDSCH, receive the second part of key system information, and perform channel demodulation on the time-frequency resource block located in the PDSCH and receive the second part of key system information whenever the second part of key system information is received subsequently and the first preset period is reached. For example, the technician stores the symbol identifier and the frequency range of the preset time frequency resource block located in the PDSCH in the base station and the terminal in advance, and the terminal may receive the second part of key system information on the time frequency resource block corresponding to the symbol identifier and the frequency range of the time frequency resource block.
Optionally, the embodiment of the present disclosure further provides a method for a base station to send resource scheduling information of a first part of key system information and a second part of key system information to a terminal, where the corresponding processing may be as follows:
when a second preset period is reached, the base station acquires a first part of key system information, wherein the second preset period is smaller than the first preset period; and the base station sends resource scheduling information of the first part of key system information and the second part of key system information through a Physical Broadcast Channel (PBCH), wherein the resource scheduling information comprises time domain information of a time frequency resource block, and the time domain information is a symbol identifier of the time frequency resource block.
The first part of key system information comprises a system frame number, a system bandwidth, the number of antenna ports and the like. The second preset period may be set by a technician and stored in the base station, and is generally smaller than the first preset period, for example, the second preset period is 40ms, the first preset period is 80ms, and the like. The resource scheduling information may include time domain information of a preset time-frequency resource block, so that the terminal may receive the second part of key system information from the time-frequency resource block corresponding to the time domain information.
In implementation, the base station may determine the first part of key system information every second preset period, then map the first part of key system information onto the PBCH, acquire resource scheduling information of the second part of key system information to be sent, map the resource scheduling information onto the PBCH, and then send the resource scheduling information of the first part of key system information and the second part of key system information through the PBCH based on a beam scanning manner. For example, the first preset period is 80ms, the second preset period is 40ms, the first part of the key system information may be transmitted only once in the second preset period, or may be transmitted repeatedly multiple times (for example, the first part of the key system information is transmitted every 10 ms), or may be transmitted multiple times, the sum of the information transmitted multiple times is the first part of the key system information (information is transmitted every 10ms, the sum of four times is the first part of the key system information), for the case that the first part of the key system information is transmitted multiple times repeatedly, the resource scheduling information of the second part of the key system information may be transmitted at any time, for the case that the sum of multiple times of transmission is the first part of the key system information, the resource scheduling information of the second part of the key system information may be transmitted at the last time of transmission.
It should be noted that, if the second preset period is an integer multiple of the first preset period, the scheduling information of the second part of the key system information is not necessarily transmitted in each first preset period, and may be transmitted in one first preset period before the second part of the key system information is transmitted. For example, the first preset period is 80ms, the second preset period is 40ms, and if the starting time points of the first part of the critical system information and the second part of the critical system information are transmitted for the first time are the same, the base station may transmit the resource scheduling information of the second part of the critical system information of the first preset period in the second preset period.
Optionally, the terminal may receive resource scheduling information of the first part of key system information and the second part of key system information, and the corresponding processing may be as follows:
and when a second preset period is reached, the terminal receives resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on the PBCH, wherein the resource scheduling information comprises time domain information of a time-frequency resource block.
In implementation, after the terminal is powered on, the terminal may detect the primary synchronization signal and the secondary synchronization signal to obtain accurate time-frequency synchronization with a cell, then receive resource scheduling information of the first part of the key system information and the second part of the key system information sent by the base station on the PBCH, and when subsequently receiving the resource scheduling information of the first part of the key system information and the second part of the key system information, may receive the resource scheduling information of the first part of the key system information and the second part of the key system information on the PBCH every second preset period.
Optionally, the terminal may further receive the second part of key system information based on time domain information in the resource scheduling information and frequency domain information stored in advance, and the corresponding processing in step 203 may be as follows:
and when the first preset period is reached, the terminal receives the second part of key system information based on time domain information and pre-stored frequency domain information of the second part of key system information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
The frequency domain information of the second part of key system information may be set by a technician and stored in the base station, for example, the frequency domain information is a frequency range of a time-frequency resource block. And time domain information corresponding to the second part of key system information and time frequency resource blocks corresponding to the frequency domain information are in the PDSCH.
In implementation, after the terminal acquires the resource scheduling information of the second part of key system information, the terminal may acquire the time domain information of the preset time-frequency resource block included therein, and then may acquire the frequency domain information of the second part of key system information stored in advance, and whenever the first preset period is reached, the terminal may find the time-frequency resource block corresponding to the current time domain information and the frequency domain information, and then demodulate the second part of key system information from the time-frequency resource block.
It should be noted that, each base station in the first preset period may send resource scheduling information of the second part of key system information, and each time the second part of key system information is received, according to the currently obtained resource scheduling information of the second part of key system information, a corresponding time-frequency resource block is found based on time domain information and pre-stored frequency domain information therein, and the second part of key system information is demodulated from the time-frequency resource block.
Optionally, the resource scheduling information of the second part of key system information further includes frequency domain information of a preset time-frequency resource block, and the corresponding processing in step 203 may be as follows:
and when the first preset period is reached, the terminal receives the second part of key system information based on time domain information and frequency domain information included in the resource scheduling information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
In implementation, the resource scheduling information of the second part of key system information further includes frequency domain information of a preset time-frequency resource block, so that the terminal can acquire time domain information and frequency domain information of the second part of key system information when receiving the resource scheduling information of the second part of key system information. When the first preset period is reached, the terminal can find the corresponding time-frequency resource block according to the time domain information and the frequency domain information in the resource scheduling information, and then demodulate the second part of key system information from the time-frequency resource block.
It should be noted that, each base station in the first preset period may send resource scheduling information of the second part of key system information, and each time the second part of key system information is received, according to the currently obtained resource scheduling information of the second part of key system information, based on the time domain information and the frequency domain information therein, find a corresponding time-frequency resource block, and demodulate the second part of key system information from the time-frequency resource block.
Optionally, the time domain information is a symbol identifier of the time frequency resource block, and the frequency domain information is a frequency range of the time frequency resource block.
In an implementation, the time domain information may be a symbol identifier of a time-frequency resource block, and the terminal can determine the corresponding time-frequency resource block by using the symbol identifier, for example, as shown in fig. 4, taking an RB including 7 OFDM (orthogonal frequency Division Multiplexing) symbols in a time domain and 12 subcarriers in a frequency domain as an example, where the symbol identifier of the time-frequency of the resource block is l-5 and 6, which means that the OFDM symbol is the last two columns of time-frequency resource blocks in the RB.
The frequency domain information is a frequency range of the time frequency resource block, for example, the frequency range of the preset time frequency resource block located in the PDSCH is 1.5MHz to 2MHz, and the frequency range may be one or multiple, for example, 1.5MHz to 1.7MHz and 2MHz to 2.1 MHz.
Optionally, when the frequency domain information is a frequency domain range, the frequency domain information may be divided into the following three types:
first, a frequency range in which the center frequency of the carrier is the median.
In implementation, the terminal and the base station pre-store the center frequency of the carrier, the frequency domain information of the second part of key system information is a frequency range with the center frequency of the carrier as a middle value, for example, the center frequency of the carrier is 5MHz, the frequency range is 2MHz to 8MHz, and the second part of key system information may be mapped on a time-frequency resource block with the frequency range of 2MHz to 8 MHz.
Second, a frequency range in which the center frequency of the carrier is an upper limit value.
In implementation, the terminal and the base station pre-store the center frequency of the carrier, and the frequency domain information of the second part of the key system information is a frequency range with the center frequency of the carrier as an upper limit value, for example, the center frequency of the carrier is 5MHz, the frequency range is 2MHz to 5MHz, and the second part of the key system information may be mapped on a time-frequency resource block with the frequency range of 2MHz to 5 MHz.
Third, a frequency range in which the center frequency of the carrier is the lower limit value.
In implementation, the terminal and the base station pre-store the center frequency of the carrier, and the frequency domain information of the second part of the key system information is a frequency range with the center frequency of the carrier as a lower limit, for example, the center frequency of the carrier is 5MHz, and the frequency range is 5MHz to 8MHz, and the second part of the key system information may be mapped on a time-frequency resource block with the frequency range of 5MHz to 8 MHz.
It should be noted that, when the frequency domain information mentioned above is a frequency range of a time-frequency resource block, if the frequency range includes a frequency of a frequency band in which a DC (Direct Current) subcarrier is located, since the DC subcarrier cannot be used for mapping data, the DC subcarrier cannot be used for mapping the second part of key system information.
In the embodiment of the disclosure, the base station acquires the second part of key system information whenever the base station reaches the first preset period, and sends the second part of key system information through the preset time-frequency resource block located in the PDSCH, and the terminal receives the second part of key system information on the preset time-frequency resource block located in the PDSCH whenever the base station reaches the first preset period. In this way, the second part of key system information is sent on the preset time frequency resource block located in the PDSCH, and the terminal can receive the second part of key system information on the preset time frequency resource block, so that the terminal can acquire the second part of key system information.
Based on the same technical concept, an exemplary embodiment of the present disclosure also provides a base station, as shown in fig. 5, including:
an obtaining module 510, configured to obtain a second part of key system information each time a first preset period is reached;
a sending module 520, configured to send the second part of key system information through a time-frequency resource block preset in the PDSCH.
Optionally, the obtaining module 510 is further configured to:
acquiring a first part of key system information when a second preset period is reached, wherein the second preset period is smaller than the first preset period;
the sending module 520 is configured to send resource scheduling information of the first part of key system information and the second part of key system information through a physical broadcast channel PBCH, where the resource scheduling information includes time domain information of the time-frequency resource block, and the time domain information is a symbol identifier of the time-frequency resource block.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block, where the frequency domain information is a frequency range of the time-frequency resource block.
In the embodiment of the disclosure, the base station acquires the second part of key system information whenever the base station reaches the first preset period, and sends the second part of key system information through the preset time-frequency resource block located in the PDSCH, and the terminal receives the second part of key system information on the preset time-frequency resource block located in the PDSCH whenever the base station reaches the first preset period. In this way, the second part of key system information is sent on the preset time frequency resource block located in the PDSCH, and the terminal can receive the second part of key system information on the preset time frequency resource block, so that the terminal can acquire the second part of key system information.
It should be noted that: in the foregoing embodiment, when the base station transmits the key system information, only the division of the functional modules is described as an example, and in practical applications, the function distribution may be completed by different functional modules according to needs, that is, the internal structure of the base station is divided into different functional modules to complete all or part of the functions described above. In addition, the base station and the method for sending the key system information provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.
Based on the same technical concept, an exemplary embodiment of the present disclosure also provides a terminal, as shown in fig. 6, including:
a receiving module 610, configured to receive a second part of key system information on a time-frequency resource block located in the PDSCH every time a first preset period is reached.
Optionally, the receiving module 610 is further configured to:
and receiving resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on a PBCH (physical broadcast channel) when a second preset period is reached, wherein the resource scheduling information comprises time domain information of the time frequency resource block.
Optionally, the receiving module 610 is configured to:
and receiving a second part of key system information based on the time domain information and pre-stored frequency domain information of the second part of key system information when a first preset period is reached, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block;
the receiving module 610 is configured to:
and receiving second part of key system information based on time domain information and frequency domain information included in the resource scheduling information when a first preset period is reached, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Optionally, the time domain information is a symbol identifier of the time frequency resource block, and the frequency domain information is a frequency range of the time frequency resource block.
Optionally, the frequency range is a frequency range with a center frequency of the carrier as a middle value; or,
the frequency range is a frequency range in which the center frequency of the carrier is an upper limit value; or,
the frequency range is a frequency range in which the center frequency of the carrier wave is a lower limit value.
In the embodiment of the disclosure, the base station acquires the second part of key system information whenever the base station reaches the first preset period, and sends the second part of key system information through the preset time-frequency resource block located in the PDSCH, and the terminal receives the second part of key system information on the preset time-frequency resource block located in the PDSCH whenever the base station reaches the first preset period. In this way, the second part of key system information is sent on the preset time frequency resource block located in the PDSCH, and the terminal can receive the second part of key system information on the preset time frequency resource block, so that the terminal can acquire the second part of key system information.
It should be noted that: in the terminal provided in the foregoing embodiment, when sending the key system information, only the division of each functional module is described as an example, and in practical applications, the function distribution may be completed by different functional modules as needed, that is, the internal structure of the terminal is divided into different functional modules to complete all or part of the functions described above. In addition, the terminal provided by the above embodiment and the method embodiment for sending the key system information belong to the same concept, and the specific implementation process thereof is detailed in the method embodiment and will not be described herein again.
Yet another exemplary embodiment of the present disclosure provides a structural diagram of a base station. Referring to fig. 7, base station 700 includes a processing component 1922 that further includes one or more processors and memory resources, represented by memory 1932, for storing instructions, e.g., applications, that can be executed by processing component 1922. The application programs stored in memory 1932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1922 is configured to execute instructions to perform the method of displaying usage records described above.
The base station 700 may also include a power component 1926 configured to perform power management for the base station 700, a wired or wireless network interface 1950 configured to connect the base station 700 to a network, and an input/output (I/O) interface 1958. The base station 700 may operate based on an operating system stored in memory 1932, such as Windows Server, Mac OSXTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
The base station 700 may include memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors the one or more programs including instructions for:
when a first preset period is reached, the base station acquires a second part of key system information;
and the base station sends the second part of key system information through a preset time-frequency resource block positioned in a Physical Downlink Shared Channel (PDSCH).
Optionally, the method further includes:
the base station acquires a first part of key system information when a second preset period is reached, wherein the second preset period is smaller than the first preset period;
and the base station sends resource scheduling information of the first part of key system information and the second part of key system information through a Physical Broadcast Channel (PBCH), wherein the resource scheduling information comprises time domain information of the time frequency resource block, and the time domain information is a symbol identifier of the time frequency resource block.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block, where the frequency domain information is a frequency range of the time-frequency resource block.
In the embodiment of the disclosure, the base station acquires the second part of key system information whenever the base station reaches the first preset period, and sends the second part of key system information through the preset time-frequency resource block located in the PDSCH, and the terminal receives the second part of key system information on the preset time-frequency resource block located in the PDSCH whenever the base station reaches the first preset period. In this way, the second part of key system information is sent on the preset time frequency resource block located in the PDSCH, and the terminal can receive the second part of key system information on the preset time frequency resource block, so that the terminal can acquire the second part of key system information.
Another exemplary embodiment of the present disclosure provides a structural diagram of a terminal. The terminal may be a mobile phone or the like.
Referring to fig. 8, terminal 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816, travel component 818.
The processing component 802 generally controls overall operation of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing elements 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operation at the terminal 800. Examples of such data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
Power components 806 provide power to the various components of terminal 800. Power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for audio output device 800.
The multimedia component 808 includes a screen providing an output interface between the terminal 800 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal 800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the audio output device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
Sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for terminal 800. For example, sensor assembly 814 can detect an open/closed state of terminal 800, the relative positioning of components, such as a display and keypad of terminal 800, sensor assembly 814 can also detect a change in position of terminal 800 or a component of terminal 800, the presence or absence of user contact with terminal 800, orientation or acceleration/deceleration of terminal 800, and a change in temperature of terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
Communication component 816 is configured to facilitate communications between terminal 800 and other devices in a wired or wireless manner. The terminal 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communications component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
The traveling member 818 is used for traveling by a terminal such as a wheel or the like.
In an exemplary embodiment, the terminal 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the terminal 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium, instructions in which, when executed by a processor of a terminal, enable the terminal to perform the method described above, the method comprising:
and when the first preset period is reached, the terminal receives the second part of key system information on a preset time-frequency resource block in the PDSCH.
Optionally, the method further includes:
and when a second preset period is reached, the terminal receives resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on a PBCH (physical broadcast channel), wherein the resource scheduling information comprises time domain information of the time frequency resource block.
Optionally, when the first preset period is reached, the terminal receives a second part of key system information on a time-frequency resource block preset in the PDSCH, including:
and when a first preset period is reached, the terminal receives a second part of key system information based on the time domain information and pre-stored frequency domain information of the second part of key system information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Optionally, the resource scheduling information further includes frequency domain information of the time-frequency resource block;
when the first preset period is reached, the terminal receives a second part of key system information on a time frequency resource block preset in the PDSCH, including:
and when a first preset period is reached, the terminal receives second part of key system information based on time domain information and frequency domain information included in the resource scheduling information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
Optionally, the time domain information is a symbol identifier of the time frequency resource block, and the frequency domain information is a frequency range of the time frequency resource block.
Optionally, the frequency range is a frequency range with a center frequency of the carrier as a middle value; or,
the frequency range is a frequency range in which the center frequency of the carrier is an upper limit value; or,
the frequency range is a frequency range in which the center frequency of the carrier wave is a lower limit value.
In the embodiment of the disclosure, the base station acquires the second part of key system information whenever the base station reaches the first preset period, and sends the second part of key system information through the preset time-frequency resource block located in the PDSCH, and the terminal receives the second part of key system information on the preset time-frequency resource block located in the PDSCH whenever the base station reaches the first preset period. In this way, the second part of key system information is sent on the preset time frequency resource block located in the PDSCH, and the terminal can receive the second part of key system information on the preset time frequency resource block, so that the terminal can acquire the second part of key system information.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (21)
1. A method of transmitting critical system information, the method comprising:
when a first preset period is reached, the base station acquires a second part of key system information;
and the base station sends the second part of key system information through a preset time-frequency resource block positioned in a Physical Downlink Shared Channel (PDSCH).
2. The method of claim 1, further comprising:
the base station acquires a first part of key system information when a second preset period is reached, wherein the second preset period is smaller than the first preset period;
and the base station sends resource scheduling information of the first part of key system information and the second part of key system information through a Physical Broadcast Channel (PBCH), wherein the resource scheduling information comprises time domain information of the time frequency resource block, and the time domain information is a symbol identifier of the time frequency resource block.
3. The method of claim 2, wherein the resource scheduling information further comprises frequency domain information of the time-frequency resource block, and wherein the frequency domain information is a frequency range of the time-frequency resource block.
4. A method of transmitting critical system information, the method comprising:
and when the first preset period is reached, the terminal receives the second part of key system information on a preset time-frequency resource block in the PDSCH.
5. The method of claim 4, further comprising:
and when a second preset period is reached, the terminal receives resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on a PBCH (physical broadcast channel), wherein the resource scheduling information comprises time domain information of the time frequency resource block.
6. The method of claim 5, wherein the receiving, by the terminal, the second part of the key system information on a time-frequency resource block preset in the PDSCH whenever the first preset period is reached comprises:
and when a first preset period is reached, the terminal receives a second part of key system information based on the time domain information and pre-stored frequency domain information of the second part of key system information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
7. The method according to claim 5, wherein the resource scheduling information further includes frequency domain information of the time-frequency resource block;
when the first preset period is reached, the terminal receives a second part of key system information on a time frequency resource block preset in the PDSCH, including:
and when a first preset period is reached, the terminal receives second part of key system information based on time domain information and frequency domain information included in the resource scheduling information, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
8. The method according to claim 6 or 7, wherein the time domain information is a symbol identifier of the time-frequency resource block, and the frequency domain information is a frequency range of the time-frequency resource block.
9. The method of claim 8, wherein the frequency range is a frequency range having a center frequency of the carrier as a middle value; or,
the frequency range is a frequency range in which the center frequency of the carrier is an upper limit value; or,
the frequency range is a frequency range in which the center frequency of the carrier wave is a lower limit value.
10. A base station, characterized in that the base station comprises:
the acquisition module is used for acquiring the second part of key system information when a first preset period is reached;
and the sending module is used for sending the second part of key system information through a preset time-frequency resource block in a Physical Downlink Shared Channel (PDSCH).
11. The base station of claim 10, wherein the obtaining module is further configured to:
acquiring a first part of key system information when a second preset period is reached, wherein the second preset period is smaller than the first preset period;
the sending module is configured to send resource scheduling information of the first part of key system information and the second part of key system information through a physical broadcast channel PBCH, where the resource scheduling information includes time domain information of the time-frequency resource block, and the time domain information is a symbol identifier of the time-frequency resource block.
12. The base station of claim 11, wherein the resource scheduling information further comprises frequency domain information of the time-frequency resource block, and wherein the frequency domain information is a frequency range of the time-frequency resource block.
13. A terminal, characterized in that the terminal comprises:
and the receiving module is used for receiving the second part of key system information on a preset time-frequency resource block in the PDSCH when the first preset period is reached.
14. The terminal of claim 13, wherein the receiving module is further configured to:
and receiving resource scheduling information of the first part of key system information and the second part of key system information sent by the base station on a PBCH (physical broadcast channel) when a second preset period is reached, wherein the resource scheduling information comprises time domain information of the time frequency resource block.
15. The terminal of claim 14, wherein the receiving module is configured to:
and receiving a second part of key system information based on the time domain information and pre-stored frequency domain information of the second part of key system information when a first preset period is reached, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
16. The terminal of claim 14, wherein the resource scheduling information further includes frequency domain information of the time-frequency resource block;
the receiving module is configured to:
and receiving second part of key system information based on time domain information and frequency domain information included in the resource scheduling information when a first preset period is reached, wherein time frequency resource blocks corresponding to the time domain information and the frequency domain information are positioned on the PDSCH.
17. The terminal according to claim 15 or 16, wherein the time domain information is a symbol identifier of the time-frequency resource block, and the frequency domain information is a frequency range of the time-frequency resource block.
18. The terminal according to claim 17, wherein the frequency range is a frequency range having a center frequency of the carrier as a middle value; or,
the frequency range is a frequency range in which the center frequency of the carrier is an upper limit value; or,
the frequency range is a frequency range in which the center frequency of the carrier wave is a lower limit value.
19. A base station, characterized in that the base station comprises:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
acquiring a second part of key system information when a first preset period is reached;
and sending the second part of key system information through a preset time-frequency resource block positioned in a Physical Downlink Shared Channel (PDSCH).
20. A terminal, characterized in that the terminal comprises:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
and receiving a second part of key system information on a time frequency resource block preset in the PDSCH every time the first preset period is reached.
21. A system for transmitting critical system information, the system comprising a base station and a terminal, wherein:
the base station is used for acquiring a second part of key system information when a first preset period is reached; sending the second part of key system information through a preset time-frequency resource block in a Physical Downlink Shared Channel (PDSCH);
and the terminal is used for receiving the second part of key system information on a preset time-frequency resource block in the PDSCH when the first preset period is reached.
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