CN108696937B - Connectionless transmission method and base station suitable for uplink small data packet - Google Patents
Connectionless transmission method and base station suitable for uplink small data packet Download PDFInfo
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- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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Abstract
The invention provides a connectionless transmission method and a base station suitable for uplink small data packets, wherein the method comprises the following steps: sending a random access leader sequence to a base station, wherein the random access leader sequence is used for indicating a value interval of the size of a small data packet to be sent; receiving random access response information fed back to a terminal by the base station according to the random access leader sequence, wherein the random access response information comprises uplink resources distributed to the terminal by the base station according to the random access leader sequence; and transmitting the small data packet to be transmitted by using the uplink resource. According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a connectionless transmission method and a base station for uplink small data packets.
Background
The vigorous development of the internet of things technology and the wide application in the fields of intelligent meter reading, environment monitoring, intelligent home, industrial monitoring and the like are closely concerned in the academic and industrial fields. The service of the internet of things has the following characteristics: (1) for example, the number of terminals is large, (2) the functions are simple, the service is single, the data size is small (<100Bytes), (3) the lower transmission rate can be tolerated, the time delay is insensitive, (4) the mobility is not provided or the mobility is regular, (5) the uplink data service is mainly used, and (6) the low frequency (>5min) large-scale periodic reporting is performed. Internet of things (lot to man) traffic is clearly distinguished from Human-to-Human communication (H2H) traffic. Therefore, the 3rd Generation Partnership Project (3 GPP) initiated a narrow-band Internet of things (NB-IoT) technical study at stage R13.
In order to more effectively adapt to the characteristics of internet of things small data packet transmission, a data Plane (UP) transmission mode and a Control Plane (CP) transmission mode are introduced into the NB-IoT technology by the 3GPP organization. The UP transmission mode is a legacy forward compatible data mode. When the NB-IoT terminal needs to send uplink Data, a Signaling Radio Bearer (SRB) is established first, and then a Data Radio Bearer (DRB) is established, and the Data of the NB-IoT terminal is transmitted to the base station through the DRB and then forwarded to a Serving Gate-way (SGW) by the base station. Fig. 1 is a signaling interaction diagram of UP transmission mode in NB-IoT technology in the prior art, and a specific signaling flow is shown in fig. 1. The CP transmission mode is a new transmission mode introduced by the NB-IoT system at the stage R13 according to the transmission characteristics of small data packets on the NB-IoT terminal. When the NB-IoT terminal needs to send uplink data, the transmission can be carried out only after the SRB is established. Specifically, data of the NB-IoT terminal is carried by a Non Access Stratum (NAS) message for transmission, and is transmitted to a core network Mobility Management Entity (MME) along with the NAS message, and then forwarded to the core network SGW by the MME. Fig. 2 is a signaling interaction diagram of CP transmission mode in NB-IoT technology in the prior art, and a specific signaling flow is shown in fig. 2.
The UP transmission mode is suitable for large data packet transmission and is not suitable for small data packet transmission. The CP transmission mode is suitable for small data packet transmission, however, in the CP transmission mode in the prior art, five messages need to be interacted when sending an uplink small data packet, as shown in fig. 2, specifically including: a random access response, an RRC connection establishment request, an RRC connection establishment completion, and an RRC connection release. Wherein the random access response is about 48 bytes, the RRC connection establishment request message is about 10 bytes, the RRC connection establishment message is about 20 bytes, the RRC connection establishment is about 14 bytes, and the RRC connection release is 12 bytes. The packets for one NB-IoT terminal are averaged 33 bytes. Therefore, in the CP transmission mode in the prior art, the transmission efficiency of small data packets is still very low, which is only about 25%. Therefore, for uplink small packet transmission of NB-IoT terminals, transmission efficiency still needs to be further improved, and signaling overhead needs to be further reduced.
Disclosure of Invention
The invention aims to provide a connectionless transmission method and a base station suitable for uplink small data packets, and solves the technical problems of high signaling overhead and low transmission efficiency in uplink small data packet transmission in the prior art.
In order to solve the above technical problem, in one aspect, the present invention provides a connectionless transmission method for uplink small data packets, including:
acquiring a random access leader sequence sent by a terminal, wherein the random access leader sequence is used for indicating a value interval of the size of a small data packet to be sent;
and feeding back random access response information to the terminal according to the random access preamble sequence, wherein the random access response information comprises uplink resources distributed to the terminal according to the random access preamble sequence, so that the terminal can use the uplink resources to send the small data packet to be sent.
In another aspect, the present invention provides a base station, including:
an obtaining module, configured to obtain a random access preamble sequence sent by a terminal, where the random access preamble sequence is used to indicate a value interval of a small data packet to be sent;
and a sending module, configured to feed back random access response information to the terminal according to the random access preamble sequence, where the random access response information includes an uplink resource allocated to the terminal according to the random access preamble sequence, so that the terminal sends the small data packet to be sent by using the uplink resource.
In another aspect, the present invention provides an electronic device for connectionless transmission of uplink small data packets, comprising:
the processor and the memory are communicated with each other through a bus; the memory stores program instructions executable by the processor, which when called by the processor are capable of performing the methods described above.
In a further aspect, the invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method described above.
According to the connectionless transmission method and the base station suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence, RRC signaling connection does not need to be established, signaling overhead is reduced, and data transmission efficiency is improved.
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Fig. 1 is a signaling interaction diagram of UP transmission mode in NB-IoT technology in the prior art;
fig. 2 is a signaling interaction diagram of CP transmission mode in NB-IoT technology in the prior art;
fig. 3 is a schematic diagram of a connectionless transmission method for uplink small data packets according to an embodiment of the present invention;
fig. 4 is a signaling interaction diagram of a connectionless transmission method for uplink small data packets according to an embodiment of the present invention;
FIG. 5 is a diagram of a base station in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device for connectionless transmission of uplink small data packets according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 3 is a schematic diagram of a connectionless transmission method for uplink small data packets according to an embodiment of the present invention, and as shown in fig. 3, an embodiment of the present invention provides a connectionless transmission method for uplink small data packets, including:
step S301, acquiring a random access leader sequence sent by a terminal, wherein the random access leader sequence is used for indicating a value interval of a small data packet to be sent;
step S302, feeding back random access response information to the terminal according to the random access preamble sequence, wherein the random access response information comprises uplink resources allocated to the terminal according to the random access preamble sequence, so that the terminal can use the uplink resources to send the small data packet to be sent.
Specifically, the execution subject of the connectionless transmission method for uplink small data packets provided in the embodiment of the present invention is preferably a base station.
When the NB-IoT terminal generates an uplink small data packet to be sent and uplink transmission is needed, the NB-IoT terminal sends a random access preamble sequence to the base station, wherein the random access preamble sequence is used for indicating a value interval of the size of the small data packet to be sent. The terminal sends a Random Access preamble sequence through a Narrowband Physical uplink Random Access CHannel (NPRACH). Immediately after the Random Access preamble sequence is transmitted, a Random Access Response (RAR) information reception timer is started.
And after receiving the random access preamble sequence, the base station carries out analysis to obtain a value interval of the size of the small data packet to be sent of the NB-IoT terminal, and allocates uplink resources suitable for the small data packet to be sent to the terminal according to the value interval. And the base station feeds back random access response information to the terminal, wherein the random access response information comprises the uplink resource. The base station feeds back RAR information to the NB-IoT terminal through a Narrowband Physical Downlink Shared Channel (NPDSCH). And the base station indicates the uplink resource allocated to the NB-IoT terminal in an uplink resource authorization field in RAR information fed back to the NB-IoT terminal.
The NB-IoT terminal listens for RAR information on the NPDSCH channel. If the NB-IoT terminal monitors the RAR information on the NPDSCH CHannel before the RAR information receiving timer is terminated, the random access is successful, the NB-IoT terminal receives the random access response information fed back by the base station, analyzes the Uplink resource allocated by the base station, uses the Uplink resource, and sends the small data packet to be sent on the CHannel resource corresponding to the Uplink Physical Uplink Shared CHannel (NPUSCH).
If the NB-IoT terminal does not hear the RAR information on the NPDSCH channel before the RAR information acceptance timer expires, the random access fails.
According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved.
On the basis of the above embodiment, further, the method further includes:
and when the terminal initiates random access for the first time, distributing the user identification for the terminal.
Specifically, first, the base station pre-allocates fixed user identities to all NB-IoT terminals in the local cell. And when each NB-IoT terminal is firstly switched on and attached, allocating the user identification to each NB-IoT terminal. The user identification is used for representing identity information of the NB-IoT terminal, and different NB-IoT terminals are distinguished according to the user identification.
According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved.
On the basis of the foregoing embodiments, further, the random access preamble sequence is selected and obtained by the terminal from a preset database according to the value interval, and the preset database stores a corresponding relationship between the value interval and the preamble sequence.
Specifically, when the NB-IoT terminal generates an uplink small data packet to be transmitted and uplink transmission is required, a corresponding random access preamble sequence is selected from a preset database according to the size of the small data packet to be transmitted.
The random access preamble sequence of NB-IoT technology takes the form of a single subcarrier hopping random access symbol group (i.e., sequence code), and all NB-IoT terminals in the same cell share the same random access sequence code. Therefore, the base station distinguishes the most important identifier of the random access preamble sequence selected by different NB-IoT terminals, and the base station does not form the sequence code of the preamble sequence itself in the time domain, but carries the position of the subcarrier of the preamble sequence in the frequency domain. Since the system bandwidth of the NB-IoT system is 180KHz and the subcarrier spacing of the Narrowband Physical Random Access CHannel (NPRACH) is 3.75KHz, the NPRACH CHannel has 48 total subcarriers. Further, the NB-IoT system has a total of 48 random access preamble sequences. The base station divides the 48 random access preamble sequences into N groups, wherein N is a positive integer and is less than or equal to 48.
The average 33 bytes of the uplink small data packets of one NB-IoT terminal does not exceed 100 bytes. Therefore, the value interval quantity of the uplink small data packet of one NB-IoT terminal can be estimated to be 0-100 Byte. And uniformly quantizing 0-100 bytes into N value intervals.
Table 1 is a mapping table of preamble sequence packet sequence numbers and size value intervals of small data packets to be transmitted, and as shown in table 1, the preamble sequence packet sequence numbers and the size value intervals of the small data packets to be transmitted are in a one-to-one correspondence relationship, so that each random access preamble sequence establishes a corresponding correspondence relationship with the size value intervals of the small data packets to be transmitted.
Table 1 is a mapping table of preamble sequence packet sequence numbers and value intervals of small data packets to be transmitted
| Preamble sequence packet sequence number | Small data packet size value interval (Byte) to be sent |
| 1 | [1，100/N) |
| 2 | [100/ |
| … | … |
| N | [(N-1)*100/N+1，100] |
When the number N of the random access preamble sequence packets is less than 48, one random access preamble sequence packet may include a plurality of random access preamble sequences, and at this time, a value interval of the size of a small data packet to be transmitted corresponds to the plurality of random access preamble sequences, and when the NB-IoT terminal generates an uplink small data packet to be transmitted and needs to perform uplink transmission, the size of the small data packet to be transmitted is compared to fall in the nth value interval, and it is determined to perform random access using the random access preamble sequence of the nth group. And the terminal randomly selects a random access preamble sequence corresponding to the terminal from a preset database according to the value interval of the size of the small data packet to be sent and sends the random access preamble sequence to the base station.
When the number N of the random access preamble sequence groups is equal to 48, only one random access preamble sequence is in one random access preamble sequence group, the size value interval of a small data packet to be sent corresponds to one random access preamble sequence, when the NB-IoT terminal generates an uplink small data packet to be sent and uplink transmission is needed, the size of the small data packet to be sent is compared to fall in the nth value interval, and random access by the nth group of random access preamble sequences is determined. And selecting the random access preamble sequence corresponding to the small data packet to be sent from a preset database according to the value interval of the size of the small data packet to be sent, and sending the random access preamble sequence to the base station.
According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved.
On the basis of the above embodiments, further, the corresponding relationship between the value intervals stored in the preset database and the leader sequences is a one-to-many relationship.
Specifically, when the number N of the random access preamble sequence packets is less than 48, one random access preamble sequence packet may include multiple random access preamble sequences, and at this time, a value interval of the size of a small data packet to be sent corresponds to the multiple random access preamble sequences, and when the NB-IoT terminal generates an uplink small data packet to be sent and needs uplink transmission, the size of the small data packet to be sent is compared to fall in the nth value interval, and it is determined to perform random access using the random access preamble sequence of the nth group. And the terminal randomly selects a random access preamble sequence corresponding to the terminal from a preset database according to the value interval of the size of the small data packet to be sent and sends the random access preamble sequence to the base station.
According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved. And the value intervals stored in the preset database and the corresponding relation of the leader sequences are in a one-to-many relation, so that the probability that different NB-IoT terminals use the same random access leader sequences is reduced, and further, the probability of collision is reduced.
On the basis of the above embodiments, further, the user identifier is a cell-level user identifier.
Specifically, the number of NB-IoT terminals is huge, and how to manage the identities of the NB-IoT terminals is very important.
The cell level subscriber identity only needs two bytes, and can be identified (2)16-1) NB-IoT devices that are fully capable of meeting the demand of 50000 NB-IoT devices in a single cell. And saves bytes.
According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved. And the user identification of the cell level is used, so that the bytes are saved, and the data transmission efficiency is further improved.
On the basis of the foregoing embodiments, further, the sending the to-be-sent small data packet by using the uplink resource specifically includes:
encapsulating the small data packet to be sent and the user identification into a media access control layer data packet;
and transmitting the media access control layer data packet by using the uplink resource.
Specifically, after receiving the random Access response information fed back by the base station, the NB-IoT terminal analyzes the uplink resource allocated by the base station, encapsulates the small data packet to be sent and the user identifier into a Media Access Control (MAC) data packet by using the uplink resource, and sends the Media Access Control data packet on the channel resource corresponding to the NPUSCH.
The pre-allocated cell-level user identifier in the MAC data packet can play a role in solving the random access competition conflict. Even if multiple NB-IoT terminals select the same random access preamble sequence when initiating a random access request, and all the NB-IoT terminals consider that the uplink channel resource allocated in the RAR information fed back by the base station is for themselves, send their MAC packets on the same uplink resource. Because the MAC packet carries the cell-level user identifier pre-allocated by the base station, the base station can still distinguish which NB-IoT terminal the demodulated MAC packet comes from, the base station can receive the MAC packet of the terminal with high signal-to-noise ratio and demodulate the small packet to be sent, and the MAC packet of the terminal with low signal-to-noise ratio is regarded as noise and is not demodulated. Thereby collision can be effectively avoided.
According to the connectionless transmission method suitable for the uplink small data packet, the value taking interval of the size of the small data packet to be transmitted is indicated by using the random access leader sequence, so that the base station can allocate uplink resources suitable for the small data packet to be transmitted to the terminal according to the random access leader sequence without establishing RRC signaling connection, signaling overhead is reduced, and data transmission efficiency is improved. And when the terminal sends the small data packet to be sent to the base station, the small data packet carries the pre-allocated user identification, so that the conflict can be effectively avoided.
On the basis of the above embodiments, further, the method further includes:
receiving the media access control layer data packet, and analyzing the user identifier and the small data packet to be sent from the media access control layer data packet;
and sending the analyzed small data packet to be sent to a core network.
Specifically, fig. 4 is a signaling interaction diagram of a connectionless transmission method for uplink small data packets according to an embodiment of the present invention, and as shown in fig. 4, in a first step, an NB-IoT terminal sends a random access preamble sequence to a base station; secondly, the base station feeds back random access response information to the terminal; thirdly, the NB-IoT terminal encapsulates the small data packet to be sent and the pre-allocated user identification into an MAC data packet, and sends the MAC data packet to the base station; fourthly, the base station sends a small data packet to be sent to the core network SGW, namely the base station receives a media access control layer data packet, analyzes a user identifier and the small data packet to be sent from the media access control layer data packet, and then sends the small data packet to be sent to the SGW; fifthly, the base station replies an NB-IoT terminal MAC layer confirmation data packet on the NPDSCH channel. The MAC layer confirms that the data packet contains 2Byte cell-level user identification pre-allocated by the base station and 1bit confirmation information.
The embodiment of the invention provides a connectionless transmission method for NB-IoT terminal uplink small data packets, which can transmit uplink data without establishing RRC signaling connection. In the connectionless transmission mode, the NB-IoT terminal sends an uplink small packet, and only 2 messages (random access response, MAC layer acknowledgement packet) need to be exchanged. Wherein the random access response is about 48 bytes, and the MAC layer acknowledges the packet to about 2 bytes. Thus, in connectionless transmission mode, the transmission efficiency of small packets is about 40%. The transmission efficiency is improved by 15% compared with the CP transmission mode in the prior art.
Fig. 5 is a schematic diagram of a base station according to an embodiment of the present invention, and as shown in fig. 5, an embodiment of the present invention provides a base station, which includes an obtaining module 501 and a sending module 502, where the obtaining module 501 is configured to obtain a random access preamble sequence sent by a terminal, and the random access preamble sequence is used to indicate a value interval of a size of a small data packet to be sent;
the sending module 502 is configured to feed back random access response information to the terminal according to the random access preamble sequence, where the random access response information includes uplink resources allocated to the terminal according to the random access preamble sequence, so that the terminal sends the small data packet to be sent by using the uplink resources.
The base station provided in the embodiment of the present invention is configured to complete the method described in the foregoing embodiment, and the specific steps of completing the method described in the foregoing embodiment by using the base station provided in this embodiment are the same as those in the foregoing embodiment, and are not described here again.
According to the base station provided by the embodiment of the invention, the value interval of the size of the small data packet to be sent is indicated by using the random access preamble sequence, so that the base station can allocate the uplink resource suitable for the small data packet to be sent to the terminal according to the random access preamble sequence, an RRC signaling connection is not required to be established, the signaling overhead is reduced, and the data transmission efficiency is improved.
On the basis of the foregoing embodiment, further, the base station further includes:
and the allocation module is used for allocating the user identifier to the terminal when the terminal initiates random access for the first time.
The base station provided in the embodiment of the present invention is configured to complete the method described in the foregoing embodiment, and the specific steps of completing the method described in the foregoing embodiment by using the base station provided in this embodiment are the same as those in the foregoing embodiment, and are not described here again.
According to the base station provided by the embodiment of the invention, the value interval of the size of the small data packet to be sent is indicated by using the random access preamble sequence, so that the base station can allocate the uplink resource suitable for the small data packet to be sent to the terminal according to the random access preamble sequence, an RRC signaling connection is not required to be established, the signaling overhead is reduced, and the data transmission efficiency is improved.
On the basis of the foregoing embodiments, further, the random access preamble sequence is selected and obtained by the terminal from a preset database according to the value interval, and the preset database stores a corresponding relationship between the value interval and the preamble sequence.
The base station provided in the embodiment of the present invention is configured to complete the method described in the foregoing embodiment, and the specific steps of completing the method described in the foregoing embodiment by using the base station provided in this embodiment are the same as those in the foregoing embodiment, and are not described here again.
According to the base station provided by the embodiment of the invention, the value interval of the size of the small data packet to be sent is indicated by using the random access preamble sequence, so that the base station can allocate the uplink resource suitable for the small data packet to be sent to the terminal according to the random access preamble sequence, an RRC signaling connection is not required to be established, the signaling overhead is reduced, and the data transmission efficiency is improved.
On the basis of the above embodiments, further, the corresponding relationship between the value intervals stored in the preset database and the leader sequences is a one-to-many relationship.
The base station provided in the embodiment of the present invention is configured to complete the method described in the foregoing embodiment, and the specific steps of completing the method described in the foregoing embodiment by using the base station provided in this embodiment are the same as those in the foregoing embodiment, and are not described here again.
According to the base station provided by the embodiment of the invention, the value interval of the size of the small data packet to be sent is indicated by using the random access preamble sequence, so that the base station can allocate the uplink resource suitable for the small data packet to be sent to the terminal according to the random access preamble sequence, an RRC signaling connection is not required to be established, the signaling overhead is reduced, and the data transmission efficiency is improved. And the value intervals stored in the preset database and the corresponding relation of the leader sequences are in a one-to-many relation, so that the probability that different NB-IoT terminals use the same random access leader sequences is reduced, and further, the probability of collision is reduced.
On the basis of the above embodiments, further, the user identifier is a cell-level user identifier.
The base station provided in the embodiment of the present invention is configured to complete the method described in the foregoing embodiment, and the specific steps of completing the method described in the foregoing embodiment by using the base station provided in this embodiment are the same as those in the foregoing embodiment, and are not described here again.
According to the base station provided by the embodiment of the invention, the value interval of the size of the small data packet to be sent is indicated by using the random access preamble sequence, so that the base station can allocate the uplink resource suitable for the small data packet to be sent to the terminal according to the random access preamble sequence, an RRC signaling connection is not required to be established, the signaling overhead is reduced, and the data transmission efficiency is improved. And the user identification of the cell level is used, so that the bytes are saved, and the data transmission efficiency is further improved.
On the basis of the foregoing embodiments, further, the sending the to-be-sent small data packet by using the uplink resource specifically includes:
encapsulating the small data packet to be sent and the user identification into a media access control layer data packet;
and transmitting the media access control layer data packet by using the uplink resource.
The base station provided in the embodiment of the present invention is configured to complete the method described in the foregoing embodiment, and the specific steps of completing the method described in the foregoing embodiment by using the base station provided in this embodiment are the same as those in the foregoing embodiment, and are not described here again.
According to the base station provided by the embodiment of the invention, the value interval of the size of the small data packet to be sent is indicated by using the random access preamble sequence, so that the base station can allocate the uplink resource suitable for the small data packet to be sent to the terminal according to the random access preamble sequence, an RRC signaling connection is not required to be established, the signaling overhead is reduced, and the data transmission efficiency is improved. And when the terminal sends the small data packet to be sent to the base station, the small data packet carries the pre-allocated user identification, so that the conflict can be effectively avoided.
Fig. 6 is a schematic structural diagram of an electronic device for connectionless transmission of uplink small data packets according to an embodiment of the present invention, and as shown in fig. 6, the electronic device includes: a processor 601, a memory 602, and a bus 603;
wherein, the processor 601 and the memory 602 complete the communication with each other through the bus 603;
and feeding back random access response information to the terminal according to the random access preamble sequence, wherein the random access response information comprises uplink resources distributed to the terminal according to the random access preamble sequence, so that the terminal can use the uplink resources to send the small data packet to be sent.
An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the methods provided by the above method embodiments, for example, the method includes: acquiring a random access leader sequence sent by a terminal, wherein the random access leader sequence is used for indicating a value interval of the size of a small data packet to be sent;
and feeding back random access response information to the terminal according to the random access preamble sequence, wherein the random access response information comprises uplink resources distributed to the terminal according to the random access preamble sequence, so that the terminal can use the uplink resources to send the small data packet to be sent.
Embodiments of the present invention provide a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to perform the methods provided by the above method embodiments, for example, the methods include: acquiring a random access leader sequence sent by a terminal, wherein the random access leader sequence is used for indicating a value interval of the size of a small data packet to be sent;
and feeding back random access response information to the terminal according to the random access preamble sequence, wherein the random access response information comprises uplink resources distributed to the terminal according to the random access preamble sequence, so that the terminal can use the uplink resources to send the small data packet to be sent.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the apparatuses and devices are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A connectionless transmission method for uplink small data packets is characterized by comprising the following steps:
acquiring a random access leader sequence sent by an Internet of things terminal, wherein the random access leader sequence is used for indicating a value interval of the size of a small data packet to be sent;
feeding back random access response information to the internet of things terminal according to the random access preamble sequence, wherein the random access response information comprises uplink resources distributed to the internet of things terminal according to the random access preamble sequence, so that the internet of things terminal can use the uplink resources to send the small data packet to be sent; when the terminal of the internet of things is started up and attached for the first time, the random access response information also comprises a fixed cell-level user identifier distributed by the base station; the user identification is encapsulated in a media access control layer data packet;
the sending the small data packet to be sent by using the uplink resource specifically includes:
encapsulating the small data packet to be sent and the user identification into a media access control layer data packet;
and transmitting the media access control layer data packet by using the uplink resource.
2. The method according to claim 1, wherein the random access preamble sequence is selected by the terminal from a preset database according to the value interval, and the preset database stores a corresponding relationship between the value interval and the preamble sequence.
3. The method of claim 2, wherein the correspondence is a one-to-many relationship.
4. The method of claim 1, further comprising:
receiving the media access control layer data packet, and analyzing the user identifier and the small data packet to be sent from the media access control layer data packet;
and sending the analyzed small data packet to be sent to a core network.
5. A base station, comprising:
the device comprises an acquisition module, a transmission module and a transmission module, wherein the acquisition module is used for acquiring a random access leader sequence sent by an Internet of things terminal, and the random access leader sequence is used for indicating a value interval of the size of a small data packet to be transmitted;
a sending module, configured to feed back random access response information to the internet of things terminal according to the random access preamble sequence, where the random access response information includes uplink resources allocated to the internet of things terminal according to the random access preamble sequence, so that the internet of things terminal sends the small data packet to be sent by using the uplink resources; when the terminal of the internet of things is started up and attached for the first time, the random access response information also comprises a fixed cell-level user identifier distributed by the base station; the user identification is encapsulated in a media access control layer data packet;
the sending the small data packet to be sent by using the uplink resource specifically includes:
encapsulating the small data packet to be sent and the user identification into a media access control layer data packet;
and transmitting the media access control layer data packet by using the uplink resource.
6. An electronic device for connectionless transmission of upstream small data packets, comprising:
the processor and the memory are communicated with each other through a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 4.
7. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1 to 4.
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| CN114982335A (en) * | 2020-04-07 | 2022-08-30 | Oppo广东移动通信有限公司 | Data transmission method, data transmission device, storage medium, processor and electronic device |
| CN113747574A (en) * | 2020-05-28 | 2021-12-03 | 华为技术有限公司 | Data transmission method and device |
| CN112512131B (en) * | 2020-11-26 | 2024-03-15 | 广东小天才科技有限公司 | Power saving method and system for data transmission |
| CN115333910B (en) * | 2022-08-10 | 2024-01-23 | 广东电网有限责任公司江门供电局 | Inter-frame interference continuous elimination method and related device for power line network random access |
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