CN108075874B - Resource scheduling method and base station - Google Patents
Resource scheduling method and base station Download PDFInfo
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- CN108075874B CN108075874B CN201711406054.8A CN201711406054A CN108075874B CN 108075874 B CN108075874 B CN 108075874B CN 201711406054 A CN201711406054 A CN 201711406054A CN 108075874 B CN108075874 B CN 108075874B
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
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Abstract
The application discloses a resource scheduling method and a base station, which are used for eliminating transmission time delay between a baseband unit and a radio remote unit, normally scheduling resources and avoiding scheduling resource waste. The method comprises the following steps: the radio remote unit receives a newly transmitted management frame sent by the baseband unit; the remote radio unit decodes the uplink data sent by the terminal to obtain a decoding result; if the remote radio unit receives a retransmission management frame sent by the baseband unit, the remote radio unit sends first confirmation information to the terminal according to the decoding result, wherein the first confirmation information comprises the newly transmitted management frame or the retransmission management frame; and if the radio frequency unit does not receive the retransmission management frame, the radio frequency remote unit sends second confirmation information to the terminal, wherein the second confirmation information is used for indicating that the hybrid automatic retransmission request process is not scheduled with resources at this time and waiting for next resource scheduling.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a resource scheduling method and a base station.
Background
In the Long Term Evolution (LTE) technology, a base station architecture in a mobile communication network adopts a distributed base station architecture, that is, the base station is divided into a near-end unit (BBU) and a far-end unit (RRU), where the near-end unit is also called a baseband unit (BBU), and the far-end unit is also called a Radio Remote Unit (RRU), and the BBU and the RRU are connected by an optical fiber.
In the uplink scheduling process, when a process starts, a base station (BBU) sends uplink transmission resource scheduling and sends a scheduling result to an RRU, after the RRU receives uplink data sent by a User Equipment (UE), the RRU decodes the uplink data and obtains a decoding result, and after the BBU receives the decoding result sent by the RRU, the BBU makes a management frame decision according to the decoding result and feeds back the uplink data receiving condition to the UE.
In the uplink scheduling process, if the distance between the BBU and the RRU is long, a large time is consumed in the process of sending the decoding result to the RRU, so that the time when the BBU receives the decoding result is after the scheduling time of the process, that is, the scheduling time is missed.
Disclosure of Invention
The application provides a resource scheduling method and a base station, which are used for eliminating transmission time delay between a baseband unit and a radio remote unit, normally scheduling resources and avoiding scheduling resource waste.
In a first aspect, the present application provides a resource scheduling method, including:
a radio remote unit receives a newly transmitted management frame sent by a baseband unit, wherein the newly transmitted management frame carries a resource block position of a newly transmitted scheduling resource, and the newly transmitted scheduling resource is a scheduling resource distributed to a terminal by the baseband unit;
the remote radio unit decodes the uplink data sent by the terminal to obtain a decoding result;
if the radio remote unit receives a retransmission management frame sent by the baseband unit, the radio remote unit sends first acknowledgement information to the terminal according to the decoding result, wherein the first acknowledgement information comprises the newly transmitted management frame or the retransmission management frame, and the retransmission management frame carries the resource block position of the retransmission scheduling resource;
and if the radio frequency unit does not receive the retransmission management frame, the remote radio frequency unit sends second confirmation information to the terminal, wherein the second confirmation information is used for indicating the terminal to wait for next resource scheduling.
According to the technical scheme, the method has the following advantages:
the base band unit BBU sends the management frame to the RRU, so that the RRU can directly make a management frame decision to perform resource scheduling after obtaining the decoding result without sending the decoding result to the BBU, transmission delay caused by the transmission of the decoding result between the BBU and the RRU is eliminated, and the RRU completes the management frame decision for scheduling the process before the process scheduling time, so that the scheduling is normally performed, and scheduling resource waste caused by the suspension of an HARQ process is avoided.
With reference to the first aspect of the present application, in a first possible implementation manner of the first aspect, the sending, by the remote radio unit, the first acknowledgement information to the terminal according to the decoding result includes:
and if the decoding result is correct, the remote radio unit sends the first confirmation information to the terminal, wherein the first confirmation information comprises the newly transmitted management frame.
When the decoding is correct, the remote radio unit can directly make a management frame decision to inform the terminal of transmitting new uplink data, so that the time for sending a decoding result to the baseband unit is saved, and the resource scheduling efficiency can be improved.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the sending, by the remote radio unit, the first acknowledgement information to the terminal according to the decoding result includes:
and if the decoding result is wrong, the remote radio unit sends the first confirmation information to the terminal, wherein the first confirmation information comprises the retransmission management frame.
When the decoding is wrong, the radio remote unit can directly make a management frame decision to inform the terminal of data retransmission in time, so that the time length for sending the decoding result to the baseband unit is saved, and the scheduling resource waste caused by the suspension of the ARQ process due to the missing of the scheduling time of the HARQ process is avoided.
In a second aspect, the present application provides a resource scheduling method, including:
the base band unit generates a newly transmitted management frame according to newly transmitted scheduling resources, wherein the newly transmitted scheduling resources are scheduling resources distributed to the terminal by the base band unit;
the base band unit sends the newly transmitted management frame to a radio remote unit, and the newly transmitted management frame carries the resource block position of the newly transmitted scheduling resource;
the base band unit judges whether retransmission scheduling resources exist according to the newly transmitted management frame;
and if the retransmission scheduling resources exist, the baseband unit sends a retransmission management frame to the remote radio unit, wherein the retransmission management frame carries the resource block position of the retransmission scheduling resources.
The base band unit sends the newly transmitted management frame and the retransmission management frame to the remote radio unit, so that the remote radio unit can make management frame decision according to the newly transmitted management frame and the retransmission management frame, transmission time for the remote radio unit to send a decoding result to the base band unit is saved, and resource scheduling efficiency is improved.
With reference to the second aspect of the present application, in a first possible implementation manner of the second aspect, the determining, by the baseband unit, whether there is a retransmission scheduling resource according to the new transmission management frame includes:
the base band unit judges whether the size of a transmission block of a target transmission block is smaller than that of a transmission block in a cache of a base station, wherein the target transmission block is a last scheduled transmission block recorded in the newly transmitted management frame;
if the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, the base band unit determines that the retransmission scheduling resource exists;
and the baseband unit generates the retransmission management frame according to the new transmission management frame.
With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, after the baseband unit determines whether a transport block size of a target transport block is smaller than a transport block size in a buffer of a base station, the method includes:
if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station, the baseband unit searches whether a continuous idle resource block exists or not so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station;
if the resource exists, the baseband unit determines the retransmission scheduling resource according to the continuous idle resource blocks;
the baseband unit generates the retransmission management frame according to the retransmission scheduling resource;
and if not, the baseband unit determines that the retransmission scheduling resource does not exist.
With reference to the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, after the baseband unit determines whether a transport block size of a target transport block is smaller than a transport block size in a buffer of a base station, the method includes:
if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station, the baseband unit judges whether the modulation and coding strategy can be adjusted so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station;
if the modulation and coding strategy can be adjusted so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, the baseband unit determines the retransmission scheduling resource according to the adjusted modulation and coding strategy;
the baseband unit generates the retransmission management frame according to the retransmission scheduling resource;
and if the modulation and coding strategy cannot be adjusted so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, the baseband unit determines that the retransmission scheduling resource does not exist.
Third aspect an embodiment of the present application provides a base station, where the base station is a radio remote unit, and the base station has a function of implementing a base station behavior in the foregoing method embodiment. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In a fourth aspect, an embodiment of the present application provides a base station, where the base station is a radio remote unit, and the base station includes: a processor, a memory, a bus, and a communication interface; the memory is configured to store computer executable instructions, and the processor is connected to the memory through the bus, and when the base station operates, the processor executes the computer executable instructions stored in the memory, so that the base station is ready to perform the resource scheduling method according to any one of the above first aspects.
In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the base station, which when executed on a computer, enable the computer to perform the resource scheduling method of any one of the first aspects.
In a sixth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, enable the computer to perform the resource scheduling method of any one of the above first aspects.
In addition, the technical effects brought by any one of the design manners of the third aspect to the sixth aspect can be referred to the technical effects brought by different design manners of the first aspect, and are not described herein again.
Seventh aspect an embodiment of the present application provides a base station, where the base station is a baseband unit, and the base station has a function of implementing a base station behavior in the foregoing method embodiment. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In an eighth aspect, an embodiment of the present application provides a base station, where the base station is a baseband unit, and the base station includes: a processor, a memory, a bus, and a communication interface; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the base station runs, the processor executes the computer execution instructions stored in the memory, so that the base station can execute the resource scheduling method according to any one of the second aspect.
In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the base station, which when executed on a computer, enable the computer to perform the resource scheduling method of any one of the second aspects.
In a tenth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, enable the computer to execute the resource scheduling method of any one of the second aspects.
In addition, the technical effects brought by any one of the design manners of the seventh aspect to the tenth aspect can be referred to the technical effects brought by the different design manners of the second aspect, and are not described herein again.
Drawings
Fig. 1 is a schematic structural diagram of a base station in an embodiment of the present application;
FIG. 2 is a schematic diagram of an embodiment of a resource scheduling method in an embodiment of the present application;
fig. 3(a) is a schematic diagram of a segment of continuous resource blocks in the embodiment of the present application;
fig. 3(b) is a schematic diagram of another embodiment of a resource scheduling method in the embodiment of the present application;
fig. 4 is a schematic diagram of an embodiment of a remote radio unit in an embodiment of the present application;
FIG. 5 is a schematic diagram of an embodiment of a baseband unit in an embodiment of the present application;
fig. 6 is a schematic diagram of another embodiment of a baseband unit in the embodiment of the present application;
fig. 7 is a schematic diagram of another embodiment of a baseband unit in the embodiment of the present application;
fig. 8 is a schematic diagram of a hardware structure of a baseband unit in the present application;
fig. 9 is a schematic diagram of a hardware structure of the remote radio unit according to the present application.
Detailed Description
The application provides a resource scheduling method and a base station, which are used for eliminating the transmission delay between a BBU (base band unit) and an RRU (remote radio unit), normally scheduling resources and avoiding scheduling resource waste.
The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The resource scheduling method in the embodiment of the present application is used for a wireless communication system, for example: global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS) systems, Universal Mobile Telecommunications System (UMTS), in particular for LTE systems and their evolution systems, new generation wireless communication systems (NR).
As shown in fig. 1, which is a schematic structural diagram of a base station in this embodiment of the application, the base station includes a baseband unit BBU and a radio remote unit RRU, where the RRU is connected to an antenna. The BBU is responsible for allocating scheduling resources for the terminal and performing scheduling management, the RRU is used for decoding received uplink data in a physical layer to obtain a decoding result, and finally sending response information corresponding to the decoding result to the terminal, wherein when the decoding result is correct, the corresponding response information is Acknowledgement (ACK), and when the decoding result is wrong, the corresponding response information is Negative Acknowledgement (NACK).
The base station in this embodiment may be an evolved Node B (evolved Node B) in a Long Term Evolution (LTE) system or an authorized assisted access long-term evolution (LAA-LTE) system, which may be referred to as an eNB or an e-NodeB) macro base station, a micro base station (also referred to as a "small base station"), a pico base station, an Access Point (AP) or a Transmission Point (TP), or a new generation base station (new generation Node B, gtnodeb).
The terminal in the present application may be a User Equipment (UE), a Mobile Station (MS), a mobile terminal (mobile terminal) and the like, and the terminal may communicate with one or more core networks through a Radio Access Network (RAN). For example, the terminal may be a mobile telephone (or so-called "cellular" telephone), a computer with mobile terminals, etc., and the terminal may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device and a terminal in future 5G networks that exchange voice or data with a radio access network. Description of the terminal: in the present invention, the terminal may further include a Relay, and the terminal and the base station that can perform data communication may be regarded as a terminal.
In a Single Frequency Network (SFN) system based on an Internet Protocol Radio Access Network (IPRAN), in an uplink resource scheduling process, a BBU allocates scheduling resources for a terminal and sends a scheduling result to an RRU so that the RRU sends a scheduling authorization indication to the terminal, and the terminal sends uplink data to the RRU after receiving the scheduling authorization indication sent by the RRU;
after the RRU receives the uplink data sent by the UE, the RRU decodes the uplink data to obtain a decoding result, and finally the RRU sends the decoding result to the BBU;
after the BBU receives the decoding result sent by the RRU, the BBU carries out management frame decision according to the decoding result and sends a new transmission and/or retransmission management frame to the RRU, and the RRU sends response information and the new transmission and/or retransmission management frame to the UE according to the decoding result so that the UE carries out uplink data retransmission.
In the uplink resource scheduling process, when the transmission delay between the BBU and the RRU is large, for example, the transmission delay between the two units is large due to a long distance between the BBU and the RRU or poor channel quality, which may cause the BBU to miss the uplink scheduling time of the UE when receiving the decoding result sent by the RRU, resulting in that the HARQ process is suspended, and this uplink resource scheduling cannot be performed, resulting in scheduling resource waste.
In order to solve the problem of scheduling resource waste in the uplink resource scheduling process, the embodiment of the application provides a resource scheduling method, the BBU sends a new transmission and/or retransmission management frame to the RRU in advance, so that after the RRU decodes uplink data to obtain a decoding result, the RRU does not need to send the decoding result to the BBU, and the RRU can send response information and the new transmission and/or retransmission management frame to the UE according to the decoding result, thereby eliminating the transmission delay problem caused by the RRU transmitting the decoding result to the BBU, enabling the HARQ process to perform normal scheduling, and avoiding scheduling resource waste.
For convenience of understanding the resource scheduling method in the embodiment of the present application, the downlink is described in detail in combination with a specific embodiment, specifically as follows:
in this embodiment, a resource scheduling method in the present application is described by taking the existence of retransmission scheduling resources as an example;
as shown in fig. 2, an embodiment of a resource scheduling method in the embodiment of the present application includes:
201. and the baseband unit generates a newly transmitted management frame according to the newly transmitted scheduling resource.
In the uplink resource scheduling process, the base band unit BBU allocates a newly transmitted scheduling resource to the terminal UE, and the BBU generates a newly transmitted management frame according to the newly transmitted scheduling resource, wherein the newly transmitted management frame carries the resource block position of the newly transmitted scheduling resource.
The new transmission management frame indicates a section of continuous idle Resource Blocks (RBs), and in the current uplink resource scheduling, the UE may transmit new uplink data, that is, new transmission data, using the section of continuous idle RBs, or may retransmit uplink data, that is, retransmission data, that was transmitted last time using the section of continuous idle RBs.
202. And the baseband unit sends a newly transmitted management frame to the remote radio unit.
After the BBU allocates newly transmitted scheduling resources for the UE and generates a newly transmitted management frame, the BBU sends the newly transmitted management frame to the RRU.
After the RRU receives the newly transmitted management frame, the RRU may directly make a management frame decision and instruct the UE to perform the next resource scheduling.
203. And if the retransmission condition is met, the baseband unit generates a retransmission management frame.
The retransmission condition is that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block in the cache of the base station, wherein the newly transmitted management frame records the size of the transmission block scheduled this time, the target transmission block is the transmission block scheduled this time, and the size of the transmission block in the cache of the base station is the size of the transmission block scheduled the last time.
Optionally, if the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block in the cache of the base station, the BBU generates a retransmission management frame according to the new transmission management frame, which may specifically be: the baseband unit flips a New Data Indicator (NDI) of the newly transmitted management frame to generate a retransmission management frame, and at this time, the RB position of the newly transmitted scheduling resource is the same as the RE position of the retransmission scheduling resource, that is, the new transmitted scheduling resource and the retransmission scheduling resource indicate the same continuous idle RB. The above-mentioned turnover is: for example, if the NDI is 1 to indicate new transmission, the new transmission management frame is directly copied, and the NDI is set to 0 to indicate retransmission, thereby generating a retransmission management frame.
Optionally, if the retransmission condition is not satisfied, the BBU searches whether there is a continuous idle RB at one end other than the newly transmitted scheduling resource, so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station; and/or the BBU adjusts a modulation and coding strategy MCS to enable the size of the transmission block meeting the target transmission block to be larger than or equal to the size of the transmission block cached by the base station.
If the resource adjustment is carried out from the two aspects and the retransmission condition is met, the BBU determines retransmission scheduling resources according to the adjusted resource allocation result, and generates retransmission management frames according to the retransmission scheduling resources; if the retransmission condition is still not met after the two adjustments, the BBU determines that there is no retransmission scheduling resource and a retransmission management frame cannot be generated in the scheduling.
Under the condition that a Modulation and Coding Scheme (MCS) is not changed, the RB has a positive correlation with the size of the transport block, and the transport block is larger when the number of RBs is larger and the amount of data carried under the same modulation and coding scheme is larger.
For example, as shown in fig. 3(a), a continuous RB segment includes RBs corresponding to 8 slots: the method comprises the following steps that RB 1-RB 8, wherein a new transmission scheduling resource block distributed to the UE by the BBU comprises RB2 and RB3, if RB4 adjacent to the new transmission scheduling resource block is a free resource block and when the number of RBs is 3, a retransmission condition can be met, the BBU determines RB2, RB3 and RB4 as retransmission scheduling resource blocks, and under the condition, the BBU generates a retransmission management frame according to three resource blocks of RB2, RB3 and RB 4; if the RB4 and the RB5 adjacent to the newly transmitted scheduling resource block are occupied, but the three resource blocks from the RB6 to the RB8 are idle RBs, in this case, the BBU generates a retransmission management frame according to the three resource blocks from the RB6, the RB7 and the RB 8.
If the resource adjustment by using the above several methods cannot meet the retransmission condition, the BBU determines that the retransmission condition is not met, that is, no retransmission scheduling resource exists, and it can be understood that in this scheduling, the BBU cannot generate a retransmission management frame.
204. And the baseband unit sends the retransmission management frame to the radio remote unit.
When the BBU generates a retransmission management frame, the BBU sends the retransmission management frame to the RRU, so that the BBU can make a management frame decision according to the newly transmitted management frame and the retransmission management frame and perform resource scheduling indication on the UE, wherein the retransmission management frame carries the resource block position of the retransmission scheduling resource.
In addition, as described in step 204, if the BBU cannot generate the retransmission management frame, step 205 is not executed, and at this time, the RRU can only make a management frame decision according to the newly transmitted management frame.
205. And the remote radio unit decodes the uplink data sent by the terminal to obtain a decoding result.
The RRU decodes the uplink data sent by the terminal to obtain a decoding result, and for this scheduling, the uplink data decoded by the RRU is the uplink data sent by the terminal in the last uplink scheduling process.
206. And the remote radio unit sends first confirmation information to the terminal according to the decoding result, wherein the first confirmation information comprises a newly transmitted management frame or a retransmitted management frame.
Optionally, when the RRU receives a retransmission management frame sent by the BBU, if the decoding result is correct, the RRU sends an ACK to the UE on a physical hybrid automatic retransmission indicator channel (PHICH), and sends a new transmission management frame to the UE on a new transmission Physical Downlink Control Channel (PDCCH), so that the UE transmits new uplink data on a new transmission scheduling resource indicated by the new transmission management frame.
Optionally, when the RRU receives the retransmission management frame sent by the BBU, if the decoding result is incorrect, the RRU sends NACK to the UE on the PHICH, and sends the retransmission management frame to the UE on the PDCCH, so that the UE retransmits the uplink data scheduled last time on the retransmission scheduling resource indicated by the retransmission management frame.
Optionally, in the resource scheduling, if the RRU does not receive the retransmission management frame sent by the BBU, the RRU only sends an ACK to the UE on the PHICH, so that the UE waits for the next resource scheduling indication.
In the uplink resource scheduling process, the BBU may record the data variation in the base station buffer by default, and as can be known from the above description related to fig. 1, the RRU decodes the uplink data in the physical layer to obtain a decoding result, and finally distributes response information corresponding to the decoding result to a Media Access Control (MAC) layer of the base station, and finally sends the response information to the terminal.
In the embodiment of the application, the BBU sends the management frame to the RRU, so that the RRU can directly make a management frame decision to perform resource scheduling after obtaining the decoding result, the decoding result does not need to be sent to the BBU, transmission delay caused by the transmission of the decoding result between the BBU and the RRU is eliminated, and the RRU completes the management frame decision for scheduling the process before the process scheduling time, so that the scheduling is normally performed, and scheduling resource waste caused by the suspension of an HARQ process is avoided.
As shown in fig. 3(b), another embodiment of the resource scheduling method in the present application includes:
301. and the baseband unit generates a newly transmitted management frame according to the newly transmitted scheduling resource.
Step 301 is similar to step 201, and for the related description of this step, reference may be made to step 201, which is not described herein again.
302. And if the retransmission condition is met, the baseband unit generates a retransmission management frame.
Step 302 is similar to step 203, and for the related description of this step, refer to step 203, which is not described herein again.
303. And the baseband unit sends the management frame to the radio remote unit.
And if the retransmission condition is not met, the BBU sends a new transmission management frame to the RRU.
304. And the remote radio unit decodes the uplink data sent by the terminal to obtain a decoding result.
305. And the remote radio unit sends first confirmation information to the terminal according to the decoding result, wherein the first confirmation information comprises a newly transmitted management frame or a retransmitted management frame.
Step 304 and step 305 are similar to step 205 and step 206, respectively, and the related description of step 304 and step 305 may refer to the related description of step 205 and step 206, respectively, and will not be described herein again.
The present embodiment is different from the embodiment corresponding to fig. 2 described above in that: the embodiment corresponding to fig. 2 is that after the BBU generates the new transmission management frame, the new transmission management frame is directly sent to the RRU without performing retransmission condition judgment, and then the retransmission condition judgment is performed at the BBU, and if the retransmission condition is satisfied, the BBU generates the retransmission management frame, and the BBU sends the retransmission management frame to the RRU again; in the embodiment corresponding to fig. 3(b), after generating the new transmission management frame, the BBU first performs retransmission condition judgment, and then, when the retransmission condition is satisfied, the BBU simultaneously issues the new transmission management frame and the retransmission management frame to the RRU, and when the retransmission condition is not satisfied, the BBU sends the new transmission management frame to the RRU.
As shown in fig. 4, an embodiment of a remote radio unit in the present application includes:
a receiving module 401, configured to receive a newly transmitted management frame sent by a baseband unit, where the newly transmitted management frame carries a resource block location of a newly transmitted scheduling resource, and the newly transmitted scheduling resource is a scheduling resource allocated by the baseband unit for a terminal;
a decoding module 402, configured to decode uplink data sent by the terminal to obtain a decoding result;
a sending module 403, configured to send, if the radio remote unit receives a retransmission management frame sent by the baseband unit, first acknowledgement information to the terminal according to a decoding result, where the first acknowledgement information includes a new transmission management frame or a retransmission management frame, and the retransmission management frame carries a resource block location of a retransmission scheduling resource;
the sending module 401 is further configured to send, to the terminal, second acknowledgement information if the radio frequency unit does not receive the retransmission management frame, where the second acknowledgement information is used to indicate that resource scheduling is not performed on the harq process this time, and wait for next resource scheduling.
In an example, the sending module 401 is specifically configured to:
and if the decoding result is correct, sending first confirmation information to the terminal, wherein the first confirmation information comprises the newly transmitted management frame. In another example, the sending module 401 is specifically configured to:
and if the decoding result is wrong, sending first confirmation information to the terminal, wherein the first confirmation information comprises the retransmission management frame.
As shown in fig. 5, an embodiment of the baseband unit in the present application includes:
a first generating module 501, configured to generate a newly transmitted management frame according to a newly transmitted scheduling resource, where the newly transmitted scheduling resource is a scheduling resource allocated by the baseband unit for the terminal;
a sending module 502, configured to send the newly transmitted management frame to a radio remote unit, where the newly transmitted management frame carries a resource block location of the newly transmitted scheduling resource;
a first determining module 503, configured to determine whether a retransmission scheduling resource exists according to the newly transmitted management frame;
the sending module 501 is further configured to send a retransmission management frame to the remote radio unit if there is a retransmission scheduling resource, where the retransmission management frame carries a resource block location of the retransmission scheduling resource.
In an example, the first determining module 503 is specifically configured to:
judging whether the size of a transmission block of a target transmission block is larger than that of a transmission block in a cache of a base station, wherein the target transmission block is the transmission block which is recorded in the newly transmitted management frame and is scheduled this time;
if the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, determining that the retransmission scheduling resource exists;
and generating the retransmission management frame according to the new transmission management frame.
As shown in fig. 6, in another embodiment of the baseband unit in the embodiment of the present application, the baseband unit further includes:
a searching module 604, configured to search whether there are consecutive idle resource blocks so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station;
a first determining module 605, configured to determine the retransmission scheduling resource according to the continuous idle resource blocks if the resource exists;
a second generating module 606, configured to generate the retransmission management frame according to the retransmission scheduling resource;
the first determining module 605 is further configured to determine that the retransmission scheduling resource does not exist if the retransmission scheduling resource does not exist.
As shown in fig. 7, in another embodiment of the baseband unit in this embodiment of the present application, the baseband unit further includes:
a second determining module 704, configured to determine whether a modulation and coding strategy may be adjusted so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station;
a second determining module 705, configured to determine the retransmission scheduling resource according to the adjusted modulation and coding strategy if the modulation and coding strategy can be adjusted so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station;
a third generating module 706, configured to generate the retransmission management frame according to the retransmission scheduling resource;
the second determining module 705 is further configured to determine that the retransmission scheduling resource does not exist if the modulation and coding strategy cannot be adjusted so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station.
For other relevant descriptions of the modules, refer to the relevant descriptions of the baseband unit and the remote radio unit in the embodiment corresponding to fig. 2, which are not repeated herein. The corresponding advantageous effects of the present embodiment are similar to the advantageous effects of the embodiment corresponding to fig. 2, and are not described herein again.
As shown in fig. 8, in a hardware structure of the baseband unit in the embodiment of the present application, the baseband unit 80 includes:
a control system 801, a baseband system 802, a transmission system 803 and a power supply and environment monitoring system 804, wherein the connection relationship among the systems is shown in the figure;
the baseband unit 80 executes the operations related to the baseband unit in the embodiment corresponding to fig. 2 under the control of the control system 801, and the specific operations may refer to the descriptions related to the embodiment corresponding to fig. 2, which is not described herein again.
The embodiment of the present application further provides a computer storage medium, configured to store computer software instructions for the terminal, and when the computer software instructions run on a computer, enable the computer to execute the resource scheduling method executed by the baseband unit.
Embodiments of the present application further provide a computer program product containing instructions, which when run on a computer, enable the computer to execute the resource scheduling method executed by the baseband unit.
As shown in fig. 9, in a hardware structure of the remote radio unit in the embodiment of the present application, the remote radio unit 90 includes:
a Common Public Radio Interface (CPRI) processor 901, a transceiver 902, an amplifier module 903, a circulator 904, a filter 905 and a power supply module, which are connected as shown in fig. 9;
wherein the transceiver 902 comprises a receiver Rx and a transmitter Tx, the amplifier module comprises: a pre-amplifier (PA) and a Low Noise Amplifier (LNA);
the radio remote unit 90 executes the relevant operations of the radio remote unit in the embodiment corresponding to fig. 2 under the control of the CPRI processor 901, and the specific operations thereof may refer to the relevant descriptions in the embodiment corresponding to fig. 2, which is not described herein again.
The embodiment of the present application further provides a computer storage medium, configured to store computer software instructions for the terminal, and when the computer software instructions run on a computer, enable the computer to execute the resource scheduling method executed by the remote radio unit.
The embodiment of the present application further provides a computer program product containing instructions, which when run on a computer, enables the computer to execute the resource scheduling method executed by the remote radio unit.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the technical solution scope of the embodiments of the present application.
Claims (18)
1. A method for scheduling resources, comprising:
a radio remote unit receives a newly transmitted management frame sent by a baseband unit, wherein the newly transmitted management frame carries a resource block position of a newly transmitted scheduling resource, and the newly transmitted scheduling resource is a scheduling resource distributed to a terminal by the baseband unit;
the remote radio unit decodes the uplink data sent by the terminal to obtain a decoding result;
if the radio remote unit receives a retransmission management frame sent by the baseband unit, the radio remote unit sends first acknowledgement information to the terminal according to the decoding result, wherein the first acknowledgement information comprises the newly transmitted management frame or the retransmission management frame, and the retransmission management frame carries the resource block position of the retransmission scheduling resource;
and if the radio frequency unit does not receive the retransmission management frame, the radio frequency remote unit sends second confirmation information to the terminal, wherein the second confirmation information is used for indicating that the hybrid automatic retransmission request process is not scheduled with resources at this time and waiting for next resource scheduling.
2. The method of claim 1, wherein the sending, by the remote radio unit, the first acknowledgement information to the terminal according to the decoding result comprises:
and if the decoding result is correct, the remote radio unit sends the first confirmation information to the terminal, wherein the first confirmation information comprises the newly transmitted management frame.
3. The method of claim 1, wherein the sending, by the remote radio unit, the first acknowledgement information to the terminal according to the decoding result comprises:
and if the decoding result is wrong, the remote radio unit sends the first confirmation information to the terminal, wherein the first confirmation information comprises the retransmission management frame.
4. A method for scheduling resources, comprising:
the base band unit generates a newly transmitted management frame according to newly transmitted scheduling resources, wherein the newly transmitted scheduling resources are scheduling resources distributed to the terminal by the base band unit;
the base band unit sends the newly transmitted management frame to a radio remote unit, and the newly transmitted management frame carries the resource block position of the newly transmitted scheduling resource;
the base band unit judges whether retransmission scheduling resources exist according to the newly transmitted management frame;
and if the retransmission scheduling resources exist, the baseband unit sends a retransmission management frame to the remote radio unit, wherein the retransmission management frame carries the resource block position of the retransmission scheduling resources.
5. The method of claim 4, wherein the determining, by the baseband unit, whether the retransmission scheduling resource exists according to the newly transmitted management frame comprises:
the base band unit judges whether the size of a transmission block of a target transmission block is smaller than that of a transmission block in a cache of a base station, wherein the target transmission block is the transmission block which is recorded in the newly transmitted management frame and is scheduled this time;
if the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, the base band unit determines that the retransmission scheduling resource exists;
and the baseband unit generates the retransmission management frame according to the new transmission management frame.
6. The method of claim 5, wherein after the baseband unit determines whether the transport block size of the target transport block is smaller than the transport block size in the buffer of the base station, the method comprises:
if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station, the baseband unit searches whether a continuous idle resource block exists or not so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station;
if the resource exists, the baseband unit determines the retransmission scheduling resource according to the continuous idle resource blocks;
the baseband unit generates the retransmission management frame according to the retransmission scheduling resource;
and if not, the baseband unit determines that the retransmission scheduling resource does not exist.
7. The method of claim 5, wherein after the baseband unit determines whether the transport block size of the target transport block is smaller than the transport block size in the buffer of the base station, the method comprises:
if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station, the baseband unit judges whether the modulation and coding strategy can be adjusted so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station;
if the modulation and coding strategy can be adjusted so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, the baseband unit determines the retransmission scheduling resource according to the adjusted modulation and coding strategy;
the baseband unit generates the retransmission management frame according to the retransmission scheduling resource;
and if the modulation and coding strategy cannot be adjusted so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, the baseband unit determines that the retransmission scheduling resource does not exist.
8. A base station, wherein the base station is a remote radio unit, comprising:
a receiving module, configured to receive a newly transmitted management frame sent by a baseband unit, where the newly transmitted management frame carries a resource block location of a newly transmitted scheduling resource, and the newly transmitted scheduling resource is a scheduling resource allocated to a terminal by the baseband unit;
the decoding module is used for decoding the uplink data sent by the terminal to obtain a decoding result;
a sending module, configured to send, if the radio remote unit receives a retransmission management frame sent by the baseband unit, first acknowledgement information to the terminal according to the decoding result, where the first acknowledgement information includes the new transmission management frame or the retransmission management frame, and the retransmission management frame carries a resource block location of the retransmission scheduling resource;
the sending module is further configured to send second acknowledgement information to the terminal if the radio frequency unit does not receive the retransmission management frame, where the second acknowledgement information is used to indicate that resource scheduling is not performed on the hybrid automatic retransmission request process this time, and wait for next resource scheduling.
9. The base station of claim 8, wherein the sending module is specifically configured to:
and if the decoding result is correct, sending the first confirmation information to the terminal, wherein the first confirmation information comprises the newly transmitted management frame.
10. The base station of claim 8, wherein the sending module is specifically configured to:
and if the decoding result is wrong, sending the first confirmation information to the terminal, wherein the first confirmation information comprises the retransmission management frame.
11. A base station, wherein the base station is a baseband unit, comprising:
a first generating module, configured to generate a newly transmitted management frame according to a newly transmitted scheduling resource, where the newly transmitted scheduling resource is a scheduling resource allocated to the terminal by the baseband unit;
a sending module, configured to send the newly transmitted management frame to a radio remote unit, where the newly transmitted management frame carries a resource block location of the newly transmitted scheduling resource;
the first judging module is used for judging whether retransmission scheduling resources exist according to the newly transmitted management frame;
the sending module is further configured to send a retransmission management frame to the remote radio unit if there is a retransmission scheduling resource, where the retransmission management frame carries a resource block location of the retransmission scheduling resource.
12. The base station of claim 11, wherein the first determining module is specifically configured to:
judging whether the size of a transmission block of a target transmission block is smaller than that of a transmission block in a cache of a base station, wherein the target transmission block is the transmission block which is recorded in the newly transmitted management frame and is scheduled this time;
if the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station, determining that the retransmission scheduling resource exists;
and generating the retransmission management frame according to the new transmission management frame.
13. The base station of claim 12, wherein the base station further comprises:
a searching module, configured to search whether a continuous idle resource block exists so that the size of the transmission block of the target transmission block is larger than or equal to the size of the transmission block cached by the base station if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station;
a first determining module, configured to determine the retransmission scheduling resource according to the continuous idle resource blocks if the resource exists;
the second generation module generates the retransmission management frame according to the retransmission scheduling resource;
the first determining module is further configured to determine that the retransmission scheduling resource does not exist if the retransmission scheduling resource does not exist.
14. The base station of claim 12, wherein the base station further comprises:
a second determining module, configured to determine whether a modulation and coding policy may be adjusted so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station, if the size of the transmission block of the target transmission block is smaller than the size of the transmission block cached by the base station;
a second determining module, configured to determine the retransmission scheduling resource according to the adjusted modulation and coding strategy if the modulation and coding strategy can be adjusted so that the size of the transmission block of the target transmission block is smaller than or equal to the size of the transmission block cached by the base station;
a third generating module, configured to generate the retransmission management frame according to the retransmission scheduling resource;
the second determining module is further configured to determine that the retransmission scheduling resource does not exist if the modulation and coding strategy cannot be adjusted so that the size of the transmission block of the target transmission block is greater than or equal to the size of the transmission block cached by the base station.
15. A base station, wherein the base station is a remote radio unit, comprising:
a receiver, a transmitter, a memory, a bus, and a processor;
the bus is used for connecting the receiver, the transmitter, the memory and the processor;
the memory is used for storing operation instructions;
the processor is configured to execute the resource scheduling method according to any one of claims 1 to 3 by calling the operation instruction.
16. A computer-readable storage medium for storing computer instructions which, when executed on a computer, cause the computer to perform the method of resource scheduling of any of claims 1 to 3.
17. A base station, wherein the base station is a baseband unit, comprising:
a receiver, a transmitter, a memory, a bus, and a processor;
the bus is used for connecting the receiver, the transmitter, the memory and the processor;
the memory is used for storing operation instructions;
the processor is configured to execute the resource scheduling method according to any one of the preceding claims 4 to 7 by calling the operation instruction.
18. A computer-readable storage medium for storing computer instructions which, when executed on a computer, cause the computer to perform the method of resource scheduling of any of claims 4 to 7.
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| CN201711406054.8A CN108075874B (en) | 2017-12-22 | 2017-12-22 | Resource scheduling method and base station |
| PCT/CN2018/120908 WO2019120130A1 (en) | 2017-12-22 | 2018-12-13 | Resource scheduling method and base station |
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| CN108075874B (en) * | 2017-12-22 | 2020-04-28 | 上海华为技术有限公司 | Resource scheduling method and base station |
| WO2020133129A1 (en) * | 2018-12-28 | 2020-07-02 | 华为技术有限公司 | Information transmission method and apparatus |
| CN111491386A (en) * | 2019-01-28 | 2020-08-04 | 普天信息技术有限公司 | Method and device for reducing service delay in wireless communication system |
| CN110225551B (en) * | 2019-06-24 | 2021-09-24 | 成都中科微信息技术研究院有限公司 | Terminal and system for RB (radio bearer) level retransmission |
| CN110225552B (en) * | 2019-06-24 | 2021-09-24 | 成都中科微信息技术研究院有限公司 | RB (radio bearer) level retransmission method and system |
| CN110289939B (en) * | 2019-06-24 | 2021-09-28 | 成都中科微信息技术研究院有限公司 | Base station and system for RB (radio bearer) level retransmission |
| CN112153666B (en) * | 2019-06-27 | 2024-01-30 | 上海华为技术有限公司 | Communication method, relay device, host base station, and computer storage medium |
| CN113301575B (en) * | 2021-05-08 | 2023-03-24 | 三维通信股份有限公司 | Resource allocation method for multiple base stations and radio remote unit |
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| CN108075874A (en) | 2018-05-25 |
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