CN109429336B - Resource scheduling method, device and base station - Google Patents

Resource scheduling method, device and base station Download PDF

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Publication number
CN109429336B
CN109429336B CN201710726738.XA CN201710726738A CN109429336B CN 109429336 B CN109429336 B CN 109429336B CN 201710726738 A CN201710726738 A CN 201710726738A CN 109429336 B CN109429336 B CN 109429336B
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subframe
sfn
retransmission
threshold
uplink
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CN109429336A (en
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胡春雷
甘志辉
刘悦
朱雪田
张光辉
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • 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
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a resource scheduling method, a resource scheduling device and a base station, and relates to the field of communication. The resource scheduling device detects the current uplink signal-to-noise ratio, if the current uplink signal-to-noise ratio is larger than a second threshold and not larger than a first threshold, a first uplink subframe is scheduled to the user terminal from a subframe n, if the current uplink signal-to-noise ratio is not larger than the second threshold, a designated service is activated in the subframe n1, and a corresponding second uplink subframe is scheduled to the user terminal, so that the conflict between retransmission based on the first uplink subframe and the second uplink subframe is avoided. The invention adjusts the sub-frame scheduling before and after the service such as TTIB is started, thereby avoiding the conflict between the sub-frame scheduling after the service is started and the retransmission sub-frame, avoiding the removal of HARQ process and improving the voice quality.

Description

Resource scheduling method, device and base station
Technical Field
The present invention relates to the field of communications, and in particular, to a resource scheduling method, apparatus and base station.
Background
TTIB (Transmission Time Interval Bundling) is an important enhancement function of a Voice over Long Term Evolution (Voice over Long Term Evolution) service, and can effectively improve coverage capability of a cell by binding 4 subframes to transmit the same TB (Transport Block) and by transmitting different redundancy versions.
It is known that the HARQ (Hybrid Automatic Repeat Request) of the TTIB is different from the ordinary HARQ in the following ways:
a) For the ordinary HARQ, the initial transmission is carried out in the nth subframe, if the initial transmission fails, the retransmission is carried out in the n +8 m subframe, and m is the retransmission times;
b) For TTIB HARQ, initial transmission is performed in the l, l +1, l +2, l +3 subframes, and if failure occurs, retransmission is performed in the l +16 × k, l +16 × k +1, n +16 × k +2, n +16 × k +3 subframes, where k is the retransmission number.
When the TTIB function is enabled, the initial HARQ of TTIB and the retransmission before TTIB is enabled may collide when "n +8 × m" is equal to "l +16 × k +1", "l +16 × k +2", or "l +16 × k + 3". Due to the fact that the retransmission priority is higher than that of the initial transmission, in an extreme case, after the TTIB is started, the scheduling cannot be carried out for 216ms, and user experience is seriously influenced.
In the prior art, a manufacturer usually avoids a collision between a tti b subframe and a retransmission subframe by clearing an HARQ process before the tti b is enabled, and abandons retransmission if some TBs cannot be successfully transmitted before the tti b is enabled, which causes RTP (Real-time Transport Protocol) packet loss and affects voice quality.
Disclosure of Invention
The embodiment of the invention provides a resource scheduling method, a resource scheduling device and a base station, which adjust the subframe scheduling before and after the start of a service such as TTIB, thereby avoiding the conflict between the subframe scheduling after the start of the service and the retransmission subframe, avoiding the removal of an HARQ process and improving the voice quality.
According to an aspect of the present invention, there is provided a resource scheduling method, including:
detecting the current uplink signal-to-noise ratio;
if the current uplink signal-to-noise ratio is larger than a second threshold and not larger than a first threshold, a first subframe is dispatched to the user terminal from a subframe n;
if the current uplink signal-to-noise ratio is not greater than the second threshold, activating a specified service in a subframe n 1;
and scheduling the corresponding second uplink subframe for the user terminal, thereby avoiding the conflict between the retransmission based on the first uplink subframe and the second uplink subframe.
In one embodiment, if the current uplink snr is not greater than the second threshold, activating the designated service in the subframe n1 includes:
if the current uplink signal-to-noise ratio is not greater than the second threshold, further judging whether retransmission before the subframe n exists;
and if no retransmission before the subframe n exists, activating the specified service in the subframe n 1.
In one embodiment, determining whether there is a retransmission before subframe n comprises:
judging whether the difference between the current SFN x 10+ Subframe and n is smaller than a first threshold value, wherein the SFN is a system frame number, the Subframe is a Subframe number, and the first threshold value is associated with a preset maximum retransmission time;
if the difference between the current SFN x 10+ subframe and n is not less than the first threshold value, it is determined that there is no retransmission before subframe n.
In one embodiment, the first threshold value is 8 × (maxhq-Tx _ Com-1);
wherein maxHARQ-Tx _ Com is a predetermined maximum number of retransmissions.
In one embodiment, the result of the second uplink subframe satisfying the difference between SFN × 10+ subframe and parameter m modulo the first parameter is within a first range;
the SFN is a system frame number, subframe is a Subframe number, and the parameter m is a Subframe number scheduled between the Subframe n and the Subframe n 1.
In one embodiment, the first parameter is 8;
the first range is 1, 2, 3 and 4.
In one embodiment, the result of the first uplink Subframe satisfying the modulus of SFN x 10+ Subframe to the second parameter is within the second range, where SFN is the system frame number and Subframe is the Subframe number.
In one embodiment, the second parameter is 8;
the second range is 1, 2, 3 and 4, or 5, 6, 7 and 0.
In one embodiment, after scheduling the second uplink subframe corresponding to the designated service for the user equipment, the method further includes:
judging whether retransmission before the subframe n1 exists or not;
if the retransmission before the subframe n1 exists, repeatedly executing the step of scheduling the corresponding second uplink subframe for the user terminal;
and if the retransmission before the subframe n1 does not exist, scheduling any subframe for the user terminal.
In one embodiment, determining whether there is a retransmission before subframe n1 comprises:
judging whether the difference between the current SFN x 10 +. Subframe and n1 is greater than a second threshold value;
if the difference between the current SFN x 10+ Subframe and n1 is not greater than the second predetermined value, it is determined that there is a retransmission before subframe n 1.
In one embodiment, the second threshold is 8 × (maxhod-Tx _ TTIB-1);
wherein maxHARQ-Tx _ TTIB is the maximum number of retransmissions for a given service.
In one embodiment, the designated traffic is a transmission time slot bonding TTIB.
According to another aspect of the present invention, there is provided a resource scheduling apparatus, including:
the signal-to-noise ratio detection module is used for detecting the current uplink signal-to-noise ratio;
the first scheduling module is used for scheduling a first uplink subframe for the user terminal from a subframe n under the condition that the current uplink signal-to-noise ratio is greater than a second threshold and not greater than a first threshold;
the service activation module is used for activating the designated service in the subframe n1 under the condition that the current uplink signal-to-noise ratio is not greater than a second threshold;
and the second scheduling module is used for scheduling the corresponding second uplink subframe for the user terminal so as to avoid the conflict between the retransmission based on the first uplink subframe and the second uplink subframe.
In an embodiment, the apparatus further includes a first identifying module, configured to further determine whether there is retransmission before the subframe n when a current uplink signal-to-noise ratio is not greater than a second threshold, and if there is no retransmission before the subframe n, instruct the service activating module to activate the specified service at the subframe n 1.
In one embodiment, the first identifying module is configured to determine whether a difference between a current SFN x 10+ Subframe and n is smaller than a first threshold, where the SFN is a system frame number, the Subframe is a Subframe number, and the first threshold is associated with a predetermined maximum retransmission number; if the difference between the current SFN x 10+ subframe and n is not less than the first threshold value, it is determined that there is no retransmission before subframe n.
In one embodiment, the first threshold value is 8 × (maxhq-Tx _ Com-1);
wherein maxHARQ-Tx _ Com is a predetermined maximum number of retransmissions.
In one embodiment, the result of the second uplink subframe satisfying the difference between SFN × 10+ subframe and parameter m modulo the first parameter is within a first range;
the SFN is a system frame number, subframe is a Subframe number, and the parameter m is a Subframe number scheduled between the Subframe n and the Subframe n 1.
In one embodiment, the first parameter is 8;
the first range is 1, 2, 3 and 4.
In one embodiment, the result of the first uplink Subframe satisfying the modulus of SFN x 10+ Subframe to the second parameter is within the second range, where SFN is the system frame number and Subframe is the Subframe number.
In one embodiment, the second parameter is 8;
the second range is 1, 2, 3 and 4, or 5, 6, 7 and 0.
In one embodiment, the above apparatus further comprises:
the second identification module is used for judging whether retransmission before the subframe n1 exists or not after the second scheduling module schedules a second uplink subframe corresponding to the specified service for the user terminal; if the retransmission before the subframe n1 exists, indicating a second scheduling module to repeatedly execute the operation of scheduling the corresponding second uplink subframe for the user terminal; and if the retransmission before the subframe n1 does not exist, indicating the second scheduling module to schedule any subframe for the user terminal.
In one embodiment, the second identifying module determines whether the difference between the current SFN x 10+ subframe and n1 is greater than a second threshold, and determines that there is a retransmission before subframe n1 if the difference between the current SFN x 10+ subframe and n1 is not greater than a second predetermined value.
In one embodiment, the second threshold is 8 × (maxhod-Tx _ TTIB-1);
wherein maxHARQ-Tx _ TTIB is the maximum number of retransmissions for a given service.
In one embodiment, the designated traffic is a transmission time slot bonding TTIB.
According to another aspect of the present invention, there is provided a resource scheduling apparatus, including:
a memory to store instructions;
a processor coupled to the memory, the processor configured to perform a method according to any of the embodiments described above based on instructions stored in the memory.
According to another aspect of the present invention, there is provided a base station, including the resource scheduling apparatus in any of the above embodiments.
According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement a method as described in any of the above embodiments.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a resource scheduling method according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of another embodiment of a resource scheduling method according to the present invention.
Fig. 3 is a diagram illustrating a resource scheduling method according to another embodiment of the present invention.
Fig. 4 is a schematic diagram of a resource scheduling apparatus according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a resource scheduling apparatus according to another embodiment of the present invention.
Fig. 6 is a schematic diagram of a resource scheduling apparatus according to another embodiment of the present invention.
Fig. 7 is a diagram illustrating a base station according to an embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
Fig. 1 is a schematic diagram of a resource scheduling method according to an embodiment of the present invention. Alternatively, the method steps of this embodiment may be executed by a resource scheduling apparatus. Wherein:
step 101, detecting the current uplink signal-to-noise ratio.
And step 102, if the current uplink signal-to-noise ratio is greater than the second threshold and not greater than the first threshold, scheduling a first subframe for the user terminal from the subframe n.
Wherein, a threshold value K and a hysteresis value H can be set, K is used as the second threshold, and K + H is used as the first threshold.
Optionally, if the current uplink snr is greater than K but less than or equal to K + H, the result of the first uplink Subframe satisfying SFN × 10+ Subframe modulo the second parameter is within the second range, where SFN is the system frame number and Subframe is the corresponding Subframe number.
For example, the first uplink subframe satisfies the following expression (1) or the following expression (2).
(SFN×10+Subframe)mod 8＝1,2,3,4 (1)
(SFN×10+Subframe)mod 8＝5,6,7,0 (2)
Step 103, if the current uplink signal-to-noise ratio is not greater than the second threshold, activating the designated service in the subframe n 1.
For example, if the current uplink snr is less than or equal to K, the TTIB is activated in the subframe n 1.
And 104, scheduling the corresponding second uplink subframe for the user terminal so as to avoid the conflict between the retransmission based on the first uplink subframe and the second uplink subframe.
Optionally, the result of the second uplink subframe satisfying the difference between SFN × 10+ subframe and parameter m modulo the first parameter is within the first range. The SFN is a system frame number, the Subframe is a corresponding Subframe number, and the parameter m is a Subframe number scheduled between the Subframe n and the Subframe n 1.
For example, the second uplink subframe satisfies the following equation (3).
(SFN×10+Subframe-m)mod 8＝1,2,3,4 (3)
Based on the resource scheduling method provided by the above embodiment of the present invention, the subframe scheduling before and after the service such as TTIB is started is adjusted, so that the collision between the subframe scheduling after the service is started and the retransmission subframe is avoided, the HARQ process does not need to be cleared, and the voice quality is improved.
Fig. 2 is a schematic diagram of another embodiment of a resource scheduling method according to the present invention. Alternatively, the method steps of this embodiment may be performed by a resource scheduling device. Wherein:
step 201, detecting the current uplink signal-to-noise ratio.
Step 202, if the current uplink signal-to-noise ratio is greater than the second threshold and not greater than the first threshold, a first subframe is scheduled to the user terminal from subframe n.
Wherein the first uplink subframe satisfies the above formula (1) or the above formula (2).
Step 203, determining whether the current uplink signal-to-noise ratio is greater than a second threshold.
If the current uplink signal-to-noise ratio is greater than the second threshold, the step 202 is repeatedly executed; if the current uplink snr is not greater than the second threshold, step 204 is performed.
Step 204, further determine whether there is a retransmission before subframe n.
If there is a retransmission before the subframe n, step 203 is repeatedly executed; if there is no retransmission before subframe n, step 205 is executed.
Optionally, the determining whether there is a retransmission before the subframe n includes:
it is determined whether the difference between the current SFN x 10+ Subframe and n is less than a first threshold value, where SFN is a system frame number, subframe is a corresponding Subframe number, and the first threshold value is associated with a predetermined maximum number of retransmissions. If the difference between the current SFN x 10+ subframe and n is not less than the first threshold value, it is determined that there is no retransmission before subframe n.
For example, the first threshold value is 8 × (maxhq-Tx _ Com-1).
Wherein maxHARQ-Tx _ Com is a predetermined maximum number of retransmissions.
Through the processing, the conflict between the retransmission before the subframe n and the current scheduling subframe can be effectively avoided.
Step 205, activating the designated service in the subframe n 1.
For example, the specified service may be a TTIB or other service.
Step 206, the corresponding second uplink subframe is scheduled for the ue, so as to avoid the collision between the retransmission based on the first uplink subframe and the second uplink subframe.
For example, the second uplink subframe may satisfy equation (3) above.
Fig. 3 is a schematic diagram of a resource scheduling method according to another embodiment of the present invention. Alternatively, the method steps of this embodiment may be performed by a resource scheduling device. Wherein:
step 301, detecting the current uplink signal-to-noise ratio.
Step 302, if the current uplink signal-to-noise ratio is greater than the second threshold and not greater than the first threshold, a first subframe is scheduled to the user terminal from subframe n.
For example, the first uplink subframe satisfies equation (1) or equation (2) above.
Step 303, determining whether the current uplink signal-to-noise ratio is greater than a second threshold.
If the current uplink signal-to-noise ratio is greater than the second threshold, the step 302 is repeatedly executed; if the current uplink snr is not greater than the second threshold, go to step 304.
Step 304, further determine whether there is a retransmission before subframe n.
If there is a retransmission before the subframe n, repeatedly executing step 303; if there is no retransmission before subframe n, step 305 is executed.
Optionally, the determining whether there is a retransmission before the subframe n includes:
and judging whether the difference between the current SFN x 10+ Subframe and n is smaller than a first threshold value, wherein the SFN is a system frame number, the Subframe is a corresponding Subframe number, and the first threshold value is associated with the preset maximum retransmission time. If the difference between the current SFN x 10+ subframe and n is not less than the first threshold value, it is determined that there is no retransmission before subframe n.
For example, the first threshold value is 8 × (maxhq-Tx _ Com-1).
Wherein maxHARQ-Tx _ Com is a predetermined maximum number of retransmissions.
Through the processing, the conflict between the retransmission before the subframe n and the current scheduling subframe can be effectively avoided.
Step 305, activating the specified service in the subframe n 1.
For example, the specified service may be a TTIB or other service.
Step 306, scheduling the corresponding second uplink subframe to the ue, so as to avoid the collision between the retransmission based on the first uplink subframe and the second uplink subframe.
For example, the second uplink subframe may satisfy equation (3) above.
Step 307, judging whether retransmission before the subframe n1 exists.
If there is a retransmission before the subframe n1, repeatedly executing step 306; if there is no retransmission before the subframe n1, step 308 is executed.
Optionally, the determining whether there is a retransmission before the subframe n1 includes:
and judging whether the difference between the current SFN × 10 +. Subframe and n1 is greater than a second threshold value. If the difference between the current SFN x 10+ Subframe and n1 is not greater than the second predetermined value, it is determined that there is a retransmission before subframe n 1.
For example, the second threshold value may be 8 × (maxhod-Tx _ TTIB-1).
Wherein maxHARQ-Tx _ TTIB is the maximum number of retransmissions for a given service.
Through the processing, the conflict between the retransmission before the subframe n1 and the currently scheduled subframe can be effectively avoided.
Step 308, any subframe is scheduled for the user terminal.
Fig. 4 is a schematic diagram of a resource scheduling apparatus according to an embodiment of the present invention. As shown in fig. 4, the apparatus may include a snr detecting module 41, a first scheduling module 42, a service activation module 43, and a second scheduling module 44. Wherein:
the snr detecting module 41 is configured to detect a current uplink snr.
The first scheduling module 42 is configured to schedule a first uplink subframe to the ue from subframe n when the current uplink snr is greater than the second threshold and not greater than the first threshold.
Optionally, the result of the first uplink Subframe satisfying SFN × 10+ Subframe modulo the second parameter is within the second range, where SFN is the system frame number and Subframe is the corresponding Subframe number. For example, the second parameter is 8; the second range is 1, 2, 3 and 4, or 5, 6, 7 and 0.
For example, the first uplink subframe satisfies equation (1) or equation (2) above.
The service activating module 43 is configured to activate the specific service in the subframe n1 when the current uplink signal-to-noise ratio is not greater than the second threshold.
Alternatively, the specified service may be TTIB.
The second scheduling module 44 is configured to schedule the corresponding second uplink subframe for the ue, so as to avoid collision between the retransmission based on the first uplink subframe and the second uplink subframe.
Optionally, the result of the second uplink subframe satisfying the difference between SFN × 10+ subframe and parameter m modulo the first parameter is within the first range. The SFN is a system frame number, the Subframe is a corresponding Subframe number, and the parameter m is a Subframe number scheduled between the Subframe n and the Subframe n 1. For example, the first parameter is 8; the first range is 1, 2, 3 and 4.
For example, the second uplink subframe satisfies the above equation (3).
Based on the resource scheduling method provided by the above embodiment of the present invention, the subframe scheduling before and after the service such as TTIB is started is adjusted, so that the collision between the subframe scheduling after the service is started and the retransmission subframe is avoided, the HARQ process does not need to be cleared, and the voice quality is improved.
Fig. 5 is a schematic diagram of a resource scheduling apparatus according to another embodiment of the present invention. Compared with the embodiment shown in fig. 4, in the embodiment shown in fig. 5, in addition to the snr detecting module 51, the first scheduling module 52, the service activating module 53 and the second scheduling module 54, a first identifying module 55 is further included. Wherein:
the first identifying module 55 is configured to further determine whether there is retransmission before the subframe n when the current uplink signal-to-noise ratio is not greater than the second threshold, and instruct the service activating module 53 to activate the designated service at the subframe n1 if there is no retransmission before the subframe n.
Optionally, the first identifying module 55 is configured to determine whether a difference between a current SFN × 10+ Subframe and n is smaller than a first threshold, where the SFN is a system frame number, the Subframe is a corresponding Subframe number, and the first threshold is associated with a predetermined maximum retransmission time; if the difference between the current SFN x 10+ subframe and n is not less than the first threshold value, it is determined that there is no retransmission before subframe n.
For example, the first threshold value may be 8 × (maxhq-Tx _ Com-1), where maxhq-Tx _ Com is a predetermined maximum number of retransmissions.
Optionally, in the embodiment shown in fig. 5, the resource scheduling apparatus may further include a second identifying module 56, configured to determine whether there is a retransmission before the subframe n1 after the second scheduling module 54 schedules the second uplink subframe corresponding to the specified service for the user terminal; if there is retransmission before the subframe n1, instructing the second scheduling module 54 to repeatedly perform the operation of scheduling the corresponding second uplink subframe to the user terminal; if there is no retransmission before the subframe n1, the second scheduling module 54 is instructed to schedule any subframe for the ue.
Optionally, the second identifying module 56 may determine whether the difference between the current SFN x 10+ subframe and n1 is greater than a second threshold, and if the difference between the current SFN x 10+ subframe and n1 is not greater than a second predetermined value, determine that there is a retransmission before the subframe n 1.
For example, the second threshold may be 8 × (maxHARQ-Tx _ TTIB-1), where maxHARQ-Tx _ TTIB is the maximum number of retransmissions for a given traffic.
Fig. 6 is a schematic diagram of a resource scheduling apparatus according to another embodiment of the present invention. As shown in fig. 6, the apparatus includes a memory 61 and a processor 62. Wherein:
the memory 61 is used for storing instructions, the processor 62 is coupled to the memory 61, and the processor 62 is configured to execute the method according to any one of fig. 1 to 3 based on the instructions stored in the memory.
As shown in fig. 6, the apparatus further includes a communication interface 63 for information interaction with other devices. Meanwhile, the device also comprises a bus 64, and the processor 62, the communication interface 63 and the memory 61 are communicated with each other through the bus 64.
The memory 61 may comprise a high-speed RAM memory, and may further comprise a non-volatile memory (e.g., at least one disk memory). The memory 61 may also be a memory array. The storage 61 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules.
Further, the processor 62 may be a central processing unit CPU, or may be an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention.
The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement a method according to any one of fig. 1 to 3.
Fig. 7 is a diagram illustrating a base station according to an embodiment of the present invention. As shown in fig. 7, the base station 71 is provided with a resource scheduling device 72. The resource scheduling apparatus 72 may be the resource scheduling apparatus according to any of the embodiments in fig. 4-6.
By implementing the invention, the problem of conflict between the TTIB HARQ process and the common HARQ process can be effectively avoided, meanwhile, the HARQ process does not need to be cleared, and the problem of voice quality deterioration caused by the incapability of retransmission can not be generated.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (27)

1. A method for scheduling resources, comprising:
detecting the current uplink signal-to-noise ratio;
if the current uplink signal-to-noise ratio is larger than a second threshold and not larger than a first threshold, a first uplink subframe is dispatched to the user terminal from a subframe n;
if the current uplink signal-to-noise ratio is not greater than the second threshold, activating a specified service in a subframe n 1;
and scheduling the corresponding second uplink subframe for the user terminal, thereby avoiding the conflict between the retransmission based on the first uplink subframe and the second uplink subframe.
2. The method of claim 1,
if the current uplink signal-to-noise ratio is not greater than the second threshold, activating the designated service in the subframe n1 includes:
if the current uplink signal-to-noise ratio is not greater than the second threshold, further judging whether retransmission before the subframe n exists;
and if the retransmission before the subframe n does not exist, activating the specified service in the subframe n 1.
3. The method of claim 2,
judging whether the retransmission before the subframe n exists comprises the following steps:
judging whether the difference between the current SFN x 10+ Subframe and n is smaller than a first threshold value, wherein the SFN is a system frame number, the Subframe is a Subframe number, and the first threshold value is associated with a preset maximum retransmission time;
if the difference between the current SFN x 10+ Subframe and the n is not less than a first threshold value, determining that there is no retransmission before the subframe n.
4. The method of claim 3,
the first threshold value is 8 × (maxhq-Tx _ Com-1);
wherein maxHARQ-Tx _ Com is the predetermined maximum number of retransmissions.
5. The method of claim 1,
the result of the modulus of the difference between SFN x 10+ subframe and parameter m on the first parameter is within a first range;
the SFN is a system frame number, the Subframe is a Subframe number, and the parameter m is a Subframe number scheduled between the Subframe n and the Subframe n 1.
6. The method of claim 5,
the first parameter is 8;
the first range is 1, 2, 3 and 4.
7. The method of claim 1,
the result of the first uplink Subframe satisfying SFN × 10+ Subframe modulo the second parameter is within a second range, where SFN is a system frame number and Subframe is a Subframe number.
8. The method of claim 7,
the second parameter is 8;
the second range is 1, 2, 3 and 4, or 5, 6, 7 and 0.
9. The method according to any one of claims 1 to 8,
after a second uplink subframe corresponding to the designated service is scheduled for the user terminal, the method further comprises the following steps:
judging whether retransmission before the subframe n1 exists or not;
if the retransmission before the subframe n1 exists, repeatedly executing the step of scheduling the corresponding second uplink subframe for the user terminal;
and if the retransmission before the subframe n1 does not exist, scheduling any subframe for the user terminal.
10. The method of claim 9,
judging whether the retransmission before the subframe n1 exists comprises the following steps:
judging whether the difference between the current SFN x 10+ Subframe and the n1 is greater than a second threshold value;
if the difference between the current SFN x 10+ Subframe and the n1 is not greater than a second predetermined value, it is determined that there is a retransmission before the subframe n 1.
11. The method of claim 10,
the second threshold is 8 x (maxHARQ-Tx _ TTIB-1);
wherein maxHARQ-Tx _ TTIB is the maximum retransmission times of the specified service.
12. The method according to any one of claims 1 to 8,
and the specified service is a transmission time slot binding TTIB.
13. A resource scheduling apparatus, comprising:
the signal-to-noise ratio detection module is used for detecting the current uplink signal-to-noise ratio;
the first scheduling module is used for scheduling a first uplink subframe for the user terminal from a subframe n under the condition that the current uplink signal-to-noise ratio is greater than a second threshold and not greater than a first threshold;
a service activation module, configured to activate a specific service in subframe n1 when the current uplink signal-to-noise ratio is not greater than the second threshold;
and the second scheduling module is used for scheduling the corresponding second uplink subframe for the user terminal so as to avoid the conflict between the retransmission based on the first uplink subframe and the second uplink subframe.
14. The apparatus of claim 13, further comprising:
and the first identification module is used for further judging whether retransmission before the subframe n exists or not under the condition that the current uplink signal-to-noise ratio is not greater than the second threshold, and if the retransmission before the subframe n does not exist, indicating the service activation module to activate the specified service at the subframe n 1.
15. The apparatus of claim 14,
the first identifying module is used for judging whether the difference between the current SFN x 10+ Subframe and the n is smaller than a first threshold value, wherein the SFN is a system frame number, the Subframe is a Subframe number, and the first threshold value is associated with a preset maximum retransmission time; if the difference between the current SFN x 10+ Subframe and the n is not less than a first threshold value, determining that there is no retransmission before the subframe n.
16. The apparatus of claim 15,
the first threshold value is 8 × (maxhq-Tx _ Com-1);
wherein maxHARQ-Tx _ Com is the predetermined maximum number of retransmissions.
17. The apparatus of claim 13,
the result of the modulus of the difference between SFN x 10+ subframe and parameter m on the first parameter is within a first range;
the SFN is a system frame number, the Subframe is a Subframe number, and the parameter m is a Subframe number scheduled between the Subframe n and the Subframe n 1.
18. The apparatus of claim 17,
the first parameter is 8;
the first range is 1, 2, 3 and 4.
19. The apparatus of claim 13,
the result of the first uplink Subframe satisfying SFN × 10+ Subframe modulo the second parameter is within a second range, where SFN is a system frame number and Subframe is a Subframe number.
20. The apparatus of claim 19,
the second parameter is 8;
the second range is 1, 2, 3 and 4, or 5, 6, 7 and 0.
21. The apparatus of any one of claims 13-20, further comprising:
the second identification module is used for judging whether retransmission before the subframe n1 exists or not after the second scheduling module schedules a second uplink subframe corresponding to the specified service for the user terminal; if the retransmission before the subframe n1 exists, indicating a second scheduling module to repeatedly execute the operation of scheduling the corresponding second uplink subframe for the user terminal; and if the retransmission before the subframe n1 does not exist, indicating the second scheduling module to schedule any subframe for the user terminal.
22. The apparatus of claim 21,
the second identification module determines whether the difference between the current SFN × 10+ subframe and the n1 is greater than a second threshold value, and determines that there is a retransmission before the sub-frame n1 if the difference between the current SFN × 10+ subframe and the n1 is not greater than a second predetermined value.
23. The apparatus of claim 22,
the second threshold is 8 × (maxhq-Tx _ TTIB-1);
wherein maxHARQ-Tx _ TTIB is the maximum retransmission times of the specified service.
24. The apparatus of any one of claims 13-20,
and the specified service is a transmission time slot binding TTIB.
25. A resource scheduling apparatus, comprising:
a memory to store instructions;
a processor coupled to the memory, the processor configured to perform implementing the method of any of claims 1-11 based on instructions stored by the memory.
26. A base station, characterized in that it comprises the resource scheduling apparatus of any of claims 13-25.
27. A computer-readable storage medium storing computer instructions which, when executed by a processor, implement the method of any one of claims 1-11.
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