CN107959546B - Self-adaptive configuration adjustment method and device for air interface resources of narrow-band system - Google Patents
Self-adaptive configuration adjustment method and device for air interface resources of narrow-band system Download PDFInfo
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- H04W72/30—Resource management for broadcast services
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
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Abstract
The application discloses a method and a device for self-adaptive configuration adjustment of air interface resources of a narrow-band system, wherein the method comprises the following steps: the base station allocates a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel is: the base station broadcasts each physical channel to the user equipment through the broadcast message to allocate the virtual physical channel, so that the user equipment autonomously decides one physical channel and sends a data packet according to the virtual physical channel allocated by the physical channel. The technical scheme provided by the application has the advantage of low system overhead.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method and an apparatus for adaptively configuring and adjusting air interface resources of a narrowband system.
Background
With the development of mobile internet and internet of things industries, more and more terminals are connected with each other and share richer data. In the face of the Internet of things market of enterprise users, the requirements of low cost, easy deployment and maintenance-free are provided for the Internet of things system equipment. Thus, a narrowband communication system over unlicensed spectrum may meet the above requirements.
Compared with the licensed spectrum of the operator, the unlicensed spectrum has the advantages of being free and sufficient in spectrum resources, but has limitations. For example, each region stipulates corresponding regulations for the application of the unlicensed spectrum, and irregular and unlimited transmission of all devices on the unlicensed spectrum is avoided, and the regulations are basically based on 2 kinds of limitations: the method is based on a listenbefore talk (LBT), that is, any device must listen to a channel for a period of time before sending data, and only if the channel is continuously idle for more than a certain time, the device can occupy a new channel, and based on a low duty cycle, that is, any device may not listen to the channel before sending, but must satisfy a certain sending duty cycle, that is, the total sending time of the device cannot exceed a threshold value within a certain time. Unlike the method of centralized control transmission by the base station in the licensed spectrum, most of the unlicensed spectrum adopts the contention-based transmission method. Since centralized scheduling cannot be performed on the unlicensed spectrum, for a Long Term Evolution (LTE) protocol, there cannot be transmission Control information of transmission Control channels such as a Physical Downlink Control Channel (PDCCH) and a Physical Uplink Control Channel (PUCCH), and a transmission header of a fixed modulation scheme is added at the beginning of a transmission packet to indicate a code rate, a modulation scheme, and a transmission packet length of a following Payload (english) in a Wifi protocol similar to 802.11 n. The WIFI scheme has a large overhead.
Disclosure of Invention
The application provides a method and a device for self-adaptive configuration adjustment of air interface resources of a narrow-band system, which can reduce system overhead.
In a first aspect, the present application provides a method for adaptively configuring and adjusting air interface resources of a narrowband system, where the method includes the following steps:
the base station allocates a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel is: only a virtual physical channel with a certain fixed packet length, a certain fixed modulation mode, a certain fixed transmission code rate and a certain fixed channel coding mode can be transmitted; the base station broadcasts each physical channel to distribute virtual physical channels to the user equipment through broadcast messages so that the user equipment autonomously decides one physical channel and sends data packets according to the virtual physical channel distributed by the physical channel.
According to the technical scheme provided by the application, through the mapping relation between the broadcast physical channel and the virtual physical channel, the user autonomously selects the physical channel according to the downlink channel condition and modulates data in an agreed virtual physical channel mode, so that the overhead of an air interface data packet header is reduced, and the system capacity is improved.
In an alternative, the allocating, by the base station, a virtual physical channel to each physical channel of the narrowband system specifically includes: establishing a mapping relation between each physical channel and the allocated virtual physical channel, periodically detecting the load of the allocated virtual physical channel, and periodically updating the mapping relation according to the load.
In an alternative scheme, the number of allocated virtual physical channels is periodically adjusted to avoid the problem that the virtual physical channels are not used for a long time and occupy the use of the physical channels.
In another alternative, the step of broadcasting, by the base station, each physical channel allocation virtual physical channel to the user equipment through a broadcast message specifically includes: the base station broadcasts each physical channel to the user equipment to allocate a virtual physical channel in a complete mode, wherein the complete mode specifically comprises the following steps: the base station enumerates the virtual physical channels allocated by all physical channels in the broadcast message.
Yet another alternative above provides a specific implementation of the broadcast message, supporting implementation of the method of the first aspect.
In a next alternative, the method specifically includes, by the base station, in the broadcast message, enumerating virtual physical channels allocated to all physical channels by: the base station carries the indexes of the virtual physical channels distributed by all the physical channels in the broadcast message; or if the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel, the base station omits the index of the virtual physical channel of the other physical channel in the broadcast message, and adds the identifier that the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel in the broadcast message.
The next alternative above provides a specific implementation of the broadcast message, supporting implementation of the method of the first aspect.
In yet another alternative, the step of broadcasting, by the base station to the user equipment through a broadcast message, each physical channel allocation virtual physical channel specifically includes: the base station broadcasts each physical channel to the user equipment in a coarse-grained mode, wherein the coarse-grained mode specifically includes that the base station divides sub-channels into a plurality of groups, each group is allocated with one virtual physical channel, and the virtual physical channels allocated to each group are listed in a broadcast message.
In yet another alternative embodiment, a specific implementation of the broadcast message is provided, which supports implementation of the method of the first aspect.
In the latter alternative, the step of broadcasting, by the base station, each physical channel allocation virtual physical channel to the user equipment through a broadcast message specifically includes: and the base station broadcasts each physical channel to the user equipment to allocate the virtual physical channel in a fine granularity mode. The fine granularity mode specifically comprises the following steps: the base station represents the used virtual physical channels in a bitmap mode, and the number of the sub-channels is allocated to each used virtual physical channel according to the sequence of the sub-channels.
The latter alternative provides a specific implementation of the broadcast message, supporting implementation of the method of the first aspect.
In a second aspect, a base station is provided, which includes:
an allocating unit, configured to allocate a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel is: only a certain fixed packet length, a certain fixed modulation mode, a certain fixed transmission code rate and a virtual physical channel using a certain fixed channel coding mode can be transmitted,
and the broadcasting unit is used for broadcasting each physical channel to the user equipment through the broadcast message so as to enable the user equipment to autonomously decide one physical channel and send the data packet according to the virtual physical channel allocated by the physical channel.
According to the technical scheme provided by the second aspect of the application, through the mapping relation between the broadcast physical channel and the virtual physical channel, the user autonomously selects the physical channel according to the downlink channel condition, and modulates data in a well-agreed virtual physical channel mode, so that the overhead of a packet header of air interface data is reduced, and the system capacity is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a format of a data packet.
Fig. 2 is a flowchart illustrating a method for adaptively configuring and adjusting air interface resources of a narrowband system according to an embodiment of the present application.
Fig. 2-1 is a schematic diagram of a format of a broadcast message in a complete manner according to an embodiment of the present application.
Fig. 2-2 is a schematic diagram of a format of a broadcast message in another complete manner according to an embodiment of the present application.
Fig. 2-3 are schematic diagrams illustrating formats of broadcast messages in a coarse-grained manner according to an embodiment of the present application.
Fig. 2 to 4 are schematic format diagrams of broadcast messages in a fine-grained manner according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a base station according to another embodiment of the present application.
Fig. 4 is a schematic hardware structure diagram of a base station according to an embodiment of the present application.
Detailed Description
Referring to fig. 1, fig. 1 may be a schematic format diagram of a DATA packet, and as shown in fig. 1, the resource indication of the Wifi system is that a SIGNAL (SIGNAL) field (40bit) is transmitted in a Binary Phase Shift Keying (BPSK) modulation mode fixed in a header, and a code rate and a modulation mode adopted by a DATA (DATA) field are indicated in the SIGNAL field. In a narrowband system, data packets sent by a terminal to a base station through wifi all need to comply with the format of the MAC packet shown in fig. 1, so that when the amount of data carried in a data field is small, the overhead of the system is large.
Referring to fig. 2, fig. 2 is a method for adjusting adaptive configuration of air interface resources of a narrowband system according to an embodiment of the present application, where the method is implemented under a network architecture shown in fig. 3, and as shown in fig. 3, the network architecture includes: the base station comprises User Equipment (UE), a base station (eNB) and a core network, wherein the UE is connected with the base station in a wireless mode, such as a mobile phone, and the base station is connected with the core network. The method, as shown in fig. 2, includes the following steps:
step S201, the base station allocates a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel may be: only a virtual physical channel with a certain fixed packet length, a certain fixed modulation mode, a certain fixed transmission code rate and a certain fixed channel coding mode can be transmitted;
optionally, the allocating, by the base station, a virtual physical channel for each physical channel of the narrowband system specifically includes:
the base station establishes a mapping relation between each physical channel and the allocated virtual physical channel, periodically detects the load of the allocated virtual physical channel, and periodically updates the mapping relation according to the load. The specific updating method may be: the base station periodically detects the load of the allocated virtual physical channel, if the load of the allocated virtual physical channel is greater than an overload threshold value, the number of the physical channels is increased for the virtual physical channel, and if the load of the allocated virtual physical channel is lower than an underload threshold value, the number of the physical channels is decreased for the virtual physical channel.
The load of the virtual physical channel can be calculated according to the parameters of the virtual physical channel, which include but are not limited to: the number of response frames, the signal power value of the virtual physical channel and the signal-to-noise ratio of the virtual physical channel. The above calculation method is not limited in the present application.
The overload threshold or the light load threshold can be set by the user.
In step S201, the total bandwidth of the system is 1.8MHz, a 180kHz guard band is reserved, and other frequency bands are equally divided into 9 180kHz channels; among the channels of 180kHz, there are 6 sub-channels of 30 kHz; i.e. with 54 sub-channels. The number of the virtual physical channels may be 10, but in practical applications, the number of the virtual physical channels may also be other numbers, for example, 32 or 40, and so on, where it is assumed that all users transmitting physical resources corresponding to the virtual channel 1 should be BPSK modulated, 1/3 code rate, packet length 160ms, and Turbo channel coded. The physical resource sending users corresponding to the virtual channel 2 should be modulated by Quadrature Phase Shift Keying (QPSK), coded by 1/3, packet length 160ms, and Turbo channel coded.
Step S202, the base station broadcasts each physical channel to the user equipment through the broadcast message to allocate a virtual physical channel so that the user equipment can decide a physical channel by self and sends a data packet according to the virtual physical channel allocated by the physical channel.
The broadcast message of step S202 may be sent periodically, and the period may be set by default as a modifiable configuration parameter.
The implementation method of the step S202 may specifically include:
the base station broadcasts each physical channel to the user equipment by a complete mode to allocate a virtual physical channel.
The above-mentioned implementation manner of broadcasting to the user equipment in the complete manner, that is, the base station needs to broadcast all the virtual physical channels allocated to all the physical channels to the user equipment, and takes 54 sub-channels as an example, it is assumed that sub-channels 0-9 allocate virtual physical channel 1, sub-channels 11-19 allocate virtual physical channel 2, sub-channels 20-25 allocate virtual physical channel 3, sub-channels 26-30 allocate virtual physical channel 4, sub-channels 31-33 allocate virtual physical channel 5, sub-channels 34-40 allocate virtual physical channel 6, sub-channels 41-44 allocate virtual physical channel 7, sub-channels 45-48 allocate virtual physical channel 8, sub-channels 49-50 allocate virtual physical channel 9, and sub-channels 51-53 allocate virtual physical channel 10. Broadcasting to the user equipment in a complete manner requires that 54 sub-channels are exhausted, that is, the virtual physical channel allocated to each sub-channel needs to be enumerated by means of a virtual channel index.
The format of the broadcast message in the complete manner is shown in fig. 2-1, where a Type field indicates an allocation manner, and in this application, there are three allocation manners, so 2 bits are reserved in the Type field, as shown in fig. 2-1, the allocation manner in the complete manner is adopted, the value of the corresponding Type field may be 00, Ch0# _ VCh _ Index is an Index of a virtual physical channel of subchannel 0, and a same flag field occupies 1 bit, where the same flag field is 1, the Index of the virtual physical channel indicating Ch1# _ VCh _ Index is the same as the Index of the virtual physical channel of Ch0# _ VCh _ Index, and the same flag field is 0, and the Index of the virtual physical channel indicating Ch1# _ VCh _ Index is different from the Index of the virtual physical channel of Ch0# _ VCh _ Index, and when the sameflag field is 1, the Index of the virtual physical channel of the next subchannel may be omitted. ChN # _ VCh _ Index denotes an Index of a virtual physical channel of subchannel N. Taking the above example of actual allocation as an example, the format of the broadcast message is shown in fig. 2-2.
The implementation method of the step S202 may specifically include:
the base station broadcasts each physical channel to the user equipment by a coarse granularity mode to allocate a virtual physical channel. The coarse-grained manner may specifically be that the sub-channels are divided into a plurality of groups, each Group is assigned to one virtual physical channel, and one virtual physical channel assigned to each Group is listed in the broadcast message.
The format of the broadcast message in the coarse-granularity mode is shown in fig. 2-3, and as shown in fig. 2-3, the Type field indicates the allocation mode, the value corresponding to the allocation mode in fig. 2-3 may be 01, G0# _ Vch _ Index indicates the Index of the virtual physical channel allocated to the 0 th group, and GN # _ Vch _ Index indicates the Index of the virtual physical channel allocated to the nth group.
The implementation method of the step S202 may specifically include:
the base station broadcasts each physical channel to the user equipment by a fine granularity mode to allocate a virtual physical channel. The fine particle size mode can be specifically as follows: the used virtual physical channels are represented by a bitmap (bitmap) manner, and the number of subchannels is allocated in the order of subchannels for each used virtual physical channel.
For the bitmap, it occupies a plurality of bits, taking 32 bits as an example, each bit represents the use condition of one virtual physical channel, for example, if the value of the 1 st, 3 rd, 5 th bit of the 32 bits is 1, it means that virtual physical channel 1, virtual physical channel 3, virtual physical channel 5 are used, otherwise, if the value of the corresponding bit is 0, it means that the virtual physical signal of the corresponding sequence number is not used. Of course, in practical applications, other bit-mapped maps may be used to represent the usage of the virtual physical channel.
The format of the broadcast message in the coarse granularity mode is shown in fig. 2 to 4, the Type field indicates the allocation mode, the value corresponding to the allocation mode in fig. 2 to 4 may be 11, VCh _1# _ Num indicates the number of sub-channels allocated to the first occupied virtual physical channel in the bitmap, and VCh _ N # _ Num indicates the number of sub-channels allocated to the nth occupied virtual physical channel in the bitmap. For example, the value of the bitmap may be: 0101, VCh _1# _ Num may have a value of: 11110, VCh _2# _ Num may have a value of: 11000, it means that the virtual physical channels used are virtual physical channel 2 and virtual physical channel 4, and the number of their corresponding sub-channels is 30 and 24, i.e. sub-channels 0-29 use virtual physical channel 2 and sub-channels 30-53 use virtual physical channel 4.
Optionally, after step S202, the method may further include:
the base station receives a data packet sent by the user equipment, and if the data packet contains an indication that the virtual channel in the downlink direction is not changed, the indication is, for example: and Mac Control Element (MCE), the base station analyzes the data packet, and when the data packet needs to be sent to the user equipment, the base station does not change the virtual physical channel and sends the data packet to the user equipment.
The UE sends a data packet to the base station, and the UE directly selects a physical channel, namely a sub-channel, and then directly sends the data packet, but for downlink information (namely the direction of sending the data packet to the UE by the base station), the UE does not know which sub-channel the base station selects to send, so that the relation between an uplink channel (the direction of sending the data packet to the base station by the UE) and a downlink virtual physical channel is bound, namely the base station and the UE adopt the same virtual physical channel for uplink and downlink communication.
If the base station and the UE adopt the same virtual physical channel for up-down communication, the downlink virtual physical channel corresponding to the base station also changes, which leads to downlink resource waste. The scheme reduces the time delay of the data packet, the virtual physical channel in the downlink direction does not change, the complexity of sending the data packet in the downlink direction is reduced, and the downlink modulation mode reduction caused by user conflict is avoided.
According to the technical scheme, different air interface using methods are provided, and a base station autonomously selects a physical channel according to the downlink channel condition through the mapping relation between a broadcast physical channel and a virtual physical channel, and modulates data in an agreed virtual physical channel mode. The method reduces the overhead of the empty data packet header and improves the system capacity. The base station can adjust the virtual physical channel mapping to adapt the network by broadcasting the air interface resource and periodically adjusting the virtual physical channel mapping according to the network load, namely the cell level adjustment of the method; the UE can temporarily change the channel by considering the congestion factor of the channel, namely the user-level adjustment of the method increases the flexibility of the system by a small amount of overhead.
Referring to fig. 3, fig. 3 is a base station 300 according to another embodiment of the present application, the base station including:
an allocating unit 301, configured to allocate a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel is: only a certain fixed packet length, a certain fixed modulation mode, a certain fixed transmission code rate and a virtual physical channel using a certain fixed channel coding mode can be transmitted,
a broadcasting unit 302, configured to broadcast, to the user equipment, each physical channel allocated with a virtual physical channel through a broadcast message, so that the user equipment autonomously decides one physical channel, and sends a data packet according to the virtual physical channel allocated with the physical channel.
Optionally, the allocating unit 301 is specifically configured to establish a mapping relationship between each physical channel and an allocated virtual physical channel, periodically detect a load of the allocated virtual physical channel, and periodically update the mapping relationship according to the load.
Optionally, the broadcasting unit 302 is specifically configured to broadcast, to the user equipment, each physical channel to allocate a virtual physical channel in a complete manner, where the complete manner specifically includes: the base station enumerates the virtual physical channels allocated by all physical channels in the broadcast message.
Optionally, the broadcast unit 302 is specifically configured to carry, in the broadcast message, indexes of virtual physical channels allocated to all physical channels; or if the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel, the base station omits the index of the virtual physical channel of the other physical channel in the broadcast message, and adds the identifier that the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel in the broadcast message.
Optionally, the broadcasting unit 302 is specifically configured to broadcast, to the user equipment, each physical channel allocation virtual physical channel in a coarse-grained manner, where the coarse-grained manner is that the base station divides the sub-channels into multiple groups, each group allocates one virtual physical channel, and lists one virtual physical channel allocated to each group in the broadcast message.
Optionally, the broadcasting unit 302 is specifically configured to broadcast, to the user equipment, each physical channel allocation virtual physical channel in a fine granularity manner. The fine granularity mode specifically comprises the following steps: the base station represents the used virtual physical channels in a bitmap mode, and the number of the sub-channels is allocated to each used virtual physical channel according to the sequence of the sub-channels.
Optionally, the base station further includes: a receiving unit 302, configured to receive a data packet sent by a user equipment;
a processing unit 304, configured to not change the virtual physical channel in the downlink direction when the data packet includes an instruction to not change the virtual channel in the downlink direction.
Technical effects, technical terms, and implementation manners of the technical solutions provided in another embodiment of the present application may refer to descriptions in the embodiment shown in fig. 2, which are not described herein again. Referring to fig. 4, fig. 4 is a base station 40 according to another embodiment of the present application, where the base station 40 is shown in fig. 4 and includes: the device 40 includes a processor 401, memory 402, a wireless transceiver 403, and a bus 404. The wireless transceiver 403 is used for transmitting and receiving data to and from an external device. The number of processors 401 in the base station 40 may be one or more. In some embodiments of the present application, the processor 401, the memory 402, and the wireless transceiver 403 may be connected by a bus or other means. The apparatus 40 may be used to perform the method shown in fig. 2. With regard to the meaning and examples of the terms involved in the present embodiment, reference may be made to the embodiment corresponding to fig. 2. And will not be described in detail herein.
Wherein the memory 402 has program code stored therein. The processor 401 is configured to call the program code stored in the memory 402 for performing the following operations:
a processor 401 configured to allocate a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel is: only virtual physical channels with a certain fixed packet length, a certain fixed modulation mode and a certain fixed transmission code rate can be transmitted,
a wireless transceiver 403, configured to broadcast each physical channel allocation virtual physical channel to the user equipment through a broadcast message, so that the user equipment autonomously decides one physical channel, and transmits a data packet according to the virtual physical channel allocated to the one physical channel.
For the technical effects of the base station 40, reference may be made to the description of the embodiment shown in fig. 2 in the present application, which is not described herein again.
Optionally, the processor 401 and the wireless transceiver 403 execute the method of fig. 2.
It should be noted that, in the communication system, for example, the base station 40 may be a server or a computer, as far as the virtual machine is concerned.
It should be noted that the processor 401 may be a single processing element or may be a general term for a plurality of processing elements. For example, the Processing element may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present Application, such as: one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
The memory 403 may be a single storage device or a combination of multiple storage elements, and is used for storing executable program codes or parameters, data, etc. required by the running device of the application program. And the memory 403 may include a Random Access Memory (RAM) or a non-volatile memory (non-volatile memory), such as a magnetic disk memory, a Flash memory (Flash), and the like.
The bus 404 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.
The base station 40 may also include input and output devices coupled to the bus 404 for coupling to other components, such as the processor 401, via the bus. The input and output device can provide an input interface for an operator so that the operator can select a control item through the input interface, and can also be other interfaces through which other equipment can be externally connected.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the order of acts described, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The content downloading method, the related device and the system provided by the embodiment of the present application are described in detail above, a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (16)
1. A method for self-adaptive configuration adjustment of air interface resources of a narrow-band system is characterized by comprising the following steps:
the base station allocates a virtual physical channel for each physical channel of the narrowband system, wherein the virtual physical channel is as follows: only a virtual physical channel with a certain fixed packet length, a certain fixed modulation mode, a certain fixed transmission code rate and a certain fixed channel coding mode can be transmitted;
the base station distributes virtual physical channels to each physical channel by broadcasting to the user equipment through the broadcast message so that the user equipment autonomously decides one physical channel and sends data packets according to the virtual physical channel distributed by the physical channel.
2. The method of claim 1, wherein the base station allocating a virtual physical channel for each physical channel of the narrowband system specifically comprises:
establishing a mapping relation between each physical channel and the allocated virtual physical channel, periodically detecting the load of the allocated virtual physical channel, and periodically updating the mapping relation according to the load.
3. The method of claim 1, wherein the step of broadcasting, by the base station through the broadcast message, the allocation of the virtual physical channel for each physical channel to the ue specifically comprises:
the base station broadcasts to the user equipment in a complete mode to allocate a virtual physical channel to each physical channel, wherein the complete mode specifically comprises the following steps: the base station enumerates the virtual physical channels allocated by all physical channels in the broadcast message.
4. The method according to claim 3, wherein the base station enumerating all the allocated virtual physical channels in the broadcast message specifically comprises:
the base station carries the indexes of the virtual physical channels distributed by all the physical channels in the broadcast message;
or if the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel, the base station omits the index of the virtual physical channel of the other physical channel in the broadcast message, and adds the identifier that the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel in the broadcast message.
5. The method of claim 1, wherein the step of broadcasting, by the base station through the broadcast message, the allocation of the virtual physical channel for each physical channel to the ue specifically comprises:
the base station broadcasts to the user equipment in a coarse-grained mode to allocate a virtual physical channel to each physical channel, wherein the coarse-grained mode is specifically that the base station divides sub-channels into a plurality of groups, each group is allocated with one virtual physical channel, and the virtual physical channels allocated to each group are listed in a broadcast message.
6. The method of claim 1, wherein the step of broadcasting, by the base station through the broadcast message, the allocation of the virtual physical channel for each physical channel to the ue specifically comprises:
the base station distributes a virtual physical channel to each physical channel by broadcasting to the user equipment in a fine granularity mode, wherein the fine granularity mode specifically comprises the following steps: the base station represents the used virtual physical channels in a bitmap mode, and the number of the sub-channels is allocated to each used virtual physical channel according to the sequence of the sub-channels.
7. The method of claim 1, wherein the base station receives a data packet sent by the ue, and if the data packet contains an indication of a virtual physical channel that does not change the downlink direction, the base station does not change the virtual physical channel in the downlink direction.
8. A base station, characterized in that the base station comprises:
an allocating unit, configured to allocate a virtual physical channel to each physical channel of a narrowband system, where the virtual physical channel is: only a certain fixed packet length, a certain fixed modulation mode, a certain fixed transmission code rate and a virtual physical channel using a certain fixed channel coding mode can be transmitted,
and the broadcasting unit is used for broadcasting the virtual physical channel allocated to each physical channel to the user equipment through the broadcast message so that the user equipment autonomously decides one physical channel and sends a data packet according to the virtual physical channel allocated to the one physical channel.
9. The base station according to claim 8, wherein the allocating unit is specifically configured to establish a mapping relationship between each physical channel and an allocated virtual physical channel, periodically detect a load of the allocated virtual physical channel, and periodically update the mapping relationship according to the load.
10. The base station according to claim 8, wherein the broadcasting unit is specifically configured to broadcast the allocation of the virtual physical channel to the user equipment in a complete manner, where the complete manner specifically includes: the base station enumerates the virtual physical channels allocated by all physical channels in the broadcast message.
11. The base station according to claim 10, wherein the broadcasting unit is specifically configured to carry, in the broadcast message, indexes of virtual physical channels allocated to all physical channels; or if the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel, the base station omits the index of the virtual physical channel of the other physical channel in the broadcast message, and adds the identifier that the index of the virtual physical channel of the other physical channel is the same as the index of the virtual physical channel of the one physical channel in the broadcast message.
12. The base station according to claim 8, wherein the broadcasting unit is configured to broadcast the virtual physical channel allocated to each physical channel to the user equipment in a coarse-grained manner, and the coarse-grained manner is specifically that the base station divides the sub-channels into a plurality of groups, allocates one virtual physical channel to each group, and lists the allocated one virtual physical channel of each group in a broadcast message.
13. The base station of claim 8, wherein the broadcasting unit is specifically configured to broadcast, to the user equipment, a virtual physical channel allocated to each physical channel in a fine granularity manner, where the fine granularity manner is specifically: the base station represents the used virtual physical channels in a bitmap mode, and the number of the sub-channels is allocated to each used virtual physical channel according to the sequence of the sub-channels.
14. The base station of claim 8, wherein the base station further comprises: a receiving unit, configured to receive a data packet sent by a user equipment;
and a processing unit, configured to not change the virtual physical channel in the downlink direction if the data packet includes an indication that the virtual physical channel in the downlink direction is not changed.
15. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by hardware, is able to implement the method of any one of claims 1 to 7.
16. A base station, comprising: a processor, memory, and a wireless transceiver;
wherein the memory is used for storing program codes;
the processor is configured to call the program code stored in the memory, and allocate a virtual physical channel to each physical channel of the narrowband system, where the virtual physical channel is: a virtual physical channel which can only transmit a certain fixed packet length, use a certain fixed modulation mode and use a certain fixed transmission code rate;
the wireless transceiver is used for broadcasting each physical channel allocation virtual physical channel to the user equipment through a broadcast message so that the user equipment autonomously decides one physical channel and sends a data packet according to the virtual physical channel allocated by the physical channel.
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| CN201610908446.3A CN107959546B (en) | 2016-10-18 | 2016-10-18 | Self-adaptive configuration adjustment method and device for air interface resources of narrow-band system |
| PCT/CN2017/106537 WO2018072684A1 (en) | 2016-10-18 | 2017-10-17 | Adaptive allocation adjustment method and apparatus for air interface resource of narrowband system |
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| CN201610908446.3A CN107959546B (en) | 2016-10-18 | 2016-10-18 | Self-adaptive configuration adjustment method and device for air interface resources of narrow-band system |
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| CN100344179C (en) * | 2004-11-13 | 2007-10-17 | 华为技术有限公司 | Method for receiving group broadcasting broadcast business data by mobile station in radio network |
| CN1805434B (en) * | 2005-01-10 | 2010-04-28 | 华为技术有限公司 | Method of obtaining physical channel resources in code modulation mode |
| WO2014053921A1 (en) * | 2012-10-01 | 2014-04-10 | Telefonaktiebolaget L M Ericsson (Publ) | A radio node, a user equipment and methods for managing a transmission |
| CN105162557B (en) * | 2014-05-30 | 2019-03-15 | 中兴通讯股份有限公司 | Hybrid automatic repeat request (HARQ) indicating means, apparatus and system |
| CN105848165B (en) * | 2015-01-14 | 2022-01-18 | 中兴通讯股份有限公司 | Method, system, base station and user equipment for using unauthorized resources |
| CN113285783A (en) * | 2015-01-28 | 2021-08-20 | 交互数字专利控股公司 | Uplink feedback method for operating a large number of carriers |
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