CN110048816B - Distribution method, device and equipment of PHICH group - Google Patents

Distribution method, device and equipment of PHICH group Download PDF

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CN110048816B
CN110048816B CN201810035777.XA CN201810035777A CN110048816B CN 110048816 B CN110048816 B CN 110048816B CN 201810035777 A CN201810035777 A CN 201810035777A CN 110048816 B CN110048816 B CN 110048816B
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user equipment
phich
allocated
phich group
determining
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CN110048816A (en
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曹慧
冯明君
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a method, a device and equipment for allocating PHICH groups, wherein the method comprises the following steps: acquiring the importance degree of user equipment to be allocated with the PHICH group; determining a first preset number corresponding to the importance degree of the user equipment; the first preset number represents the maximum number of PHICHs to be allocated to a PHICH group of user equipment and used for sending feedback information; the higher the importance degree is, the smaller the first preset number corresponding to the importance degree is; determining a first target PHICH group meeting a first preset condition and taking the first target PHICH group as a PHICH group allocated to user equipment; the first preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, the allocated PHICH allocated to the user equipment exists in the PHICH group, the user equipment to which the allocated PHICH is allocated has the same importance degree as the user equipment, and the number of the allocated PHICH is smaller than the first preset number. By the embodiment of the application, the requirements of the user equipment with different importance degrees on the PHICH group sending power and interference performance are ensured, and the sending power of the PHICH group is not wasted.

Description

Distribution method, device and equipment of PHICH group
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a device for allocating PHICH groups.
Background
In a hybrid automatic Repeat Request (HARQ) mechanism, a base station performs cyclic redundancy check on data transmitted by a user equipment, and then transmits feedback information to the user equipment according to a result of the cyclic redundancy check, wherein the feedback information is transmitted to the user equipment through a hybrid retransmission Indicator physical Channel (PHICH). In the process of sending feedback information, a plurality of PHICHs may be mapped to the same Resource Element (RE) set to send the feedback information to the user equipment, and the PHICHs mapped to the same RE set may be grouped into a PHICH group. Since one base station serves a plurality of user equipments at the same time, when the base station transmits feedback information to the plurality of user equipments, it is necessary to allocate a PHICH group for transmitting the feedback information to each user equipment.
Currently, for a plurality of user equipments with different importance degrees, when the PHICH groups are allocated to the plurality of user equipments, the user equipments with different importance degrees are allocated to one PHICH group as much as possible, so that the importance degrees of the user equipments corresponding to the PHICH in the PHICH group allocated to the user equipments are uniformly distributed.
However, in a private network scenario, if the current PHICH group allocation method is adopted, the requirements of the user equipment on the transmission power and the anti-interference performance of the PHICH group cannot be met, and the requirement of the transmission power of the PHICH group is not wasted.
Disclosure of Invention
Based on the above, the application provides a method for allocating PHICH groups, which is used for not only ensuring the requirements of user equipment with different importance degrees on the transmission power and interference performance of the PHICH groups, but also not wasting the transmission power of the PHICH groups.
The application also provides a PHICH group allocation device and equipment, which are used for ensuring the realization and the application of the method in practice.
In order to solve the technical problem, the technical scheme of the application is as follows:
the application discloses a method for allocating PHICH groups, which comprises the following steps:
acquiring the importance degree of user equipment to be allocated with the PHICH group;
determining a first preset number corresponding to the importance degree of the user equipment, wherein the first preset number represents the maximum number of PHICHs used for sending feedback information in a PHICH group to be allocated to the user equipment; the first preset numbers corresponding to different importance degrees are different, and the higher the importance degree is, the smaller the first preset number corresponding to the importance degree is;
determining a first target PHICH group satisfying a first preset condition, and determining the first target PHICH group as a PHICH group allocated to the user equipment, the first preset condition including: the PHICHs in the PHICH group are not allocated to the user equipment; or, there is an allocated PHICH allocated to the user equipment in the PHICH group, the user equipment to which the allocated PHICH is allocated has the same degree of importance as the user equipment, and the number of the allocated PHICHs is less than the first preset number.
Wherein the determining a first target PHICH group satisfying a first preset condition comprises:
acquiring a preset cyclic shift value for determining a PHICH group;
determining a pending PHICH group corresponding to the cyclic shift value;
judging whether the pending PHICH group meets the first preset condition or not;
if the pending PHICH group meets the first preset condition, determining the pending PHICH group as a first target PHICH group;
if the undetermined PHICH group does not meet the first preset condition, adjusting the cyclic shift value, determining the undetermined PHICH group corresponding to the adjusted cyclic shift value, and returning to execute the step of judging whether the undetermined PHICH group meets the first preset condition until a first target PHICH group meeting the first preset condition is determined.
Wherein, after the determining a first target PHICH group satisfying a first preset condition and determining the first target PHICH group as the PHICH group allocated to the user equipment, further comprising:
determining an orthogonal sequence index of the allocated PHICH from PHICHs included in the first target PHICH group;
determining a relationship between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
Wherein, after determining an orthogonal sequence index to which a PHICH has been allocated from among the PHICHs included in the first target PHICH group, further comprising:
determining a discontinuous transmission ratio corresponding to the user equipment; the discontinuous transmission ratio is as follows: the ratio of the number of times that the PHICH allocated to the user equipment unsuccessfully transmits feedback information to the user equipment to the total number of times that the PHICH transmits the feedback information to the user equipment;
if the discontinuous transmission ratio corresponding to the user equipment exceeds a preset value, acquiring a second preset number corresponding to the importance degree of the user equipment, wherein the second preset number represents the maximum number of PHICHs used for sending feedback information in a PHICH group to be reallocated to the user equipment, and the second preset number is smaller than the first preset number;
determining a second target PHICH group meeting a second preset condition; the second preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, the PHICH group has an allocated PHICH allocated to the user equipment, the user equipment corresponding to the allocated PHICH has the same importance degree as the user equipment, and the number of the allocated PHICH is smaller than the second preset number.
After the determining a second target PHICH group satisfying a second preset condition, the method further includes:
determining an orthogonal sequence index of the allocated PHICH from PHICHs included in the second target PHICH group;
and determining the corresponding relation between the orthogonal sequence index of the allocated PHICH and the user equipment.
The application also discloses a PHICH group allocation device, which comprises:
a first obtaining unit, configured to obtain importance of a user equipment to which a PHICH group is to be allocated;
a first determining unit for determining a first preset number corresponding to the degree of importance of the user equipment; the first preset number represents the maximum number of PHICHs to be allocated to the PHICH group of the user equipment and used for sending feedback information; the first preset numbers corresponding to different importance degrees are different, and the higher the importance degree is, the smaller the first preset number corresponding to the importance degree is;
a second determining unit, configured to determine a first target PHICH group that satisfies a first preset condition, and determine the first target PHICH group as a PHICH group allocated to the user equipment; the first preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, there is an allocated PHICH allocated to the user equipment in the PHICH group, the user equipment to which the allocated PHICH is allocated has the same degree of importance as the user equipment, and the number of the allocated PHICHs is less than the first preset number.
Wherein the second determination unit includes:
an obtaining subunit, configured to obtain a preset cyclic shift value used for determining the PHICH group;
a first determining subunit, configured to determine a pending PHICH group corresponding to the cyclic shift value;
a determining subunit, configured to determine whether the pending PHICH group meets the first preset condition;
a second determining subunit, configured to determine the pending PHICH group as a first target PHICH group when the determining subunit determines that the pending PHICH group satisfies the first preset condition;
and the third determining subunit is used for adjusting the cyclic shift value, determining the undetermined PHICH group corresponding to the adjusted cyclic shift value when the judging subunit judges that the undetermined PHICH group does not meet the first preset condition, and returning to execute the step of judging whether the undetermined PHICH group meets the first preset condition until determining a first target PHICH group meeting the first preset condition.
Wherein the apparatus further comprises:
a third determining unit, configured to determine an orthogonal sequence index of the allocated PHICH from the PHICHs included in the first target PHICH group;
a fourth determining unit, configured to determine a relationship between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
Wherein the apparatus further comprises:
a fifth determining unit, configured to determine a discontinuous transmission ratio corresponding to the ue; the discontinuous transmission ratio is as follows: the ratio of the number of times that the PHICH allocated to the user equipment unsuccessfully transmits feedback information to the user equipment to the total number of times that the PHICH transmits the feedback information to the user equipment;
a second obtaining unit, configured to obtain a second preset number corresponding to an importance degree of the user equipment when a discontinuous transmission ratio corresponding to the user equipment exceeds a preset value, where the second preset number represents a maximum number of PHICHs to be reallocated to the user equipment, and is used for sending feedback information, and the second preset number is smaller than the first preset number;
a sixth determining unit, configured to determine a second target PHICH group that satisfies a second preset condition; the second preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, the PHICH group has an allocated PHICH allocated to the user equipment, the user equipment corresponding to the allocated PHICH has the same importance degree as the user equipment, and the number of the allocated PHICH is smaller than the second preset number.
Wherein the apparatus further comprises:
a seventh determining unit configured to determine an orthogonal sequence index of the allocated PHICH from the PHICHs included in the second target PHICH group;
an eighth determining unit, configured to determine a correspondence between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
The application also discloses a distribution device of the PHICH group, which comprises:
a memory for storing a program;
and the processor is used for running the program and realizing the method when running the program.
Compared with the prior art, the beneficial effect of this application is:
in the embodiment of the application, according to the importance degree of the user equipment, a first target PHICH group allocated to the user equipment satisfies the following conditions: the PHICH in the first target PHICH group is not allocated with user equipment; or the importance degree of the user equipment to which the PHICH in the first target PHICH group is allocated is the same as that of the user equipment, so that the importance degrees of the user equipment corresponding to the PHICH in the first target PHICH group are the same; because the importance degrees of the user equipment corresponding to the PHICHs in the first target PHICH group are the same, and the requirements on the transmission power are the same, when the transmission power is set for the first target PHICH group, the requirements on the transmission power of all the user equipment corresponding to the PHICHs in the first target PHICH group can be ensured, and meanwhile, the transmission power of the PHICH group is not wasted; in addition, in the embodiment of the application, according to different importance degrees of user equipment, the number of PHICHs used for sending feedback information in a first target PHICH group allocated to the user equipment is different, wherein the higher the importance degree of the user equipment is, the smaller the number of PHICHs used for sending feedback information in the corresponding first target PHICH group is, so that the number of PHICHs used for sending feedback information in the first target PHICH group corresponding to the user equipment with a high importance degree is small, and thus the first target PHICH group allocated to the user equipment with a high importance degree has higher anti-interference capability when sending feedback information.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of an embodiment of a method for allocating PHICH groups in the present application;
fig. 2 is a flowchart of an embodiment of a method for adjusting PHICH groups in the present application;
fig. 3 is a flowchart of an embodiment of a method for feeding PHICH information back according to the present application;
fig. 4 is a flowchart of another embodiment of a method for feeding PHICH information back in the present application;
fig. 5 is a schematic structural diagram of an embodiment of an apparatus for allocating PHICH groups in the present application;
fig. 6 is a schematic structural diagram of an allocation apparatus for PHICH groups in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of 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. 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 application.
In a Long Term Evolution (LTE) system of the general mobile communication technology, a user equipment transmits data to a base station through an uplink shared physical channel, and a hybrid Automatic Repeat Request (HARQ) mechanism is used by the base station side to guarantee the error code performance of the data transmitted through the uplink shared channel by using an Automatic Repeat Request (ARQ) and a Cyclic Redundancy Check (CRC) for the received data.
The HARQ mechanism transmits a check result of data sent by user equipment through a PHICH, the check result of one user equipment is transmitted through one PHICH, a plurality of PHICHs can form a PHICH group, and PHICHs corresponding to different user equipment in one PHICH group are distinguished through orthogonal sequence indexes. In the research of the inventor in the embodiment of the present application, in the prior art, when a scheduler at a base station allocates PHICHs to multiple user equipments with different importance degrees, users with different importance degrees in the same PHICH group are uniformly distributed as much as possible, for example, a critical user, a secondary user, and a common user are uniformly distributed. In the private network scenario, the private network scenario in the embodiment of the present application may be a scenario in which an interphone is used arbitrarily, for example, a scenario in which an interphone is used between security personnel, a scenario in which an interphone is used between team personnel, and the like, where users with different degrees of importance have different requirements for PHICH performance, for example, users with different degrees of importance have different requirements for PHICH transmission power, and PHICH transmission power in the same PHICH group is the same, so if a PHICH group is allocated to user equipment according to the prior art, if PHICH transmission is performed according to PHICH transmission power required by important clients, transmission power of the PHICH group is wasted, if PHICH transmission is performed according to PHICH transmission power required by non-important clients, the requirements of the important clients for PHICH performance cannot be guaranteed, and, in the private network scenario, user equipment with different degrees of importance have anti-interference capability for PHICH used for transmitting feedback information in the PHICH group, the method has different requirements, namely the method can not meet the requirements of user equipment with different importance degrees on the transmission power and the anti-interference performance of the PHICH group, and simultaneously does not waste the transmission power of the PHICH group.
Therefore, the inventors in this embodiment of the present application keep the importance levels of the user equipments corresponding to the PHICHs in the same PHICH group the same according to the importance levels of the user equipments, and the number of PHICHs for transmitting feedback information is smaller in the PHICH group allocated to the user equipment with higher importance level. Therefore, according to the distribution thought of the PHICH, the importance degrees of the user equipment in the same PHICH group are the same, and when the sending power is set for the PHICH group, the requirements of all the user equipment in the group on the PHICH power can be ensured; meanwhile, in the embodiment of the application, the number of PHICHs for sending feedback information by users in different PHICH groups is different, namely the number of PHICHs for sending feedback information in the PHICH group corresponding to the user equipment with higher importance degree is less, so that the anti-interference capability between the PHICHs for sending feedback information in the PHICH group is enhanced, and the requirement of the user equipment with high importance degree on the PHICH interference performance is further met. Therefore, the method for allocating the PHICH group to the user equipment in the embodiment of the application can realize that the transmission power of the PHICH group is not wasted when the user equipment with different importance degrees has different requirements on the transmission power and the anti-interference performance of the PHICH.
Specifically, fig. 1 shows a flowchart of an embodiment of a method for allocating PHICH groups, where the flowchart shows a process for allocating PHICH groups to user equipments with different degrees of importance by a scheduler at a base station side in this application, and the embodiment of the method may include the following steps:
in this embodiment, a scheduler at a base station allocates a PHICH group for sending feedback information to each user equipment according to the importance of the user equipment served by the base station.
Step 101: the importance of the user equipment served by the base station is obtained.
In this embodiment, the base station side receives data sent by a plurality of user equipments, performs cyclic redundancy check on the received data, and determines a subsequent operation of the user equipment according to a result of the cyclic redundancy check, for example, sends feedback information based on a result of the cyclic redundancy check to the user equipment. In this step, the importance degree of one user equipment is obtained, and the importance degree corresponding to a specific user equipment may be represented by an identifier representing the importance degree, and certainly, the importance degree corresponding to the user equipment may also be represented by other manners, and the manner of representing the importance degree of the user equipment is not specifically limited in this embodiment.
Step 102: and determining a first preset number corresponding to the user equipment.
In the present embodiment, the PHICH groups allocated to the user equipments of different degrees of importance have different numbers of PHICHs for transmitting feedback information, and for convenience of description, the present embodiment refers to the number of PHICHs allocated to the PHICH group of the user equipment for transmitting feedback information as a first preset number, which can be set by a technician and decreases as the degree of importance of the user equipment increases. Therefore, after determining the importance degree corresponding to the ue, in this step, a first preset number corresponding to the ue is determined.
Step 103: and determining a first target PHICH group meeting a first preset condition corresponding to the user equipment by adjusting the cyclic shift value of the demodulation reference signal, and determining the first target PHICH group as the PHICH group allocated to the user equipment.
After determining the first preset number corresponding to the user equipment, in this step, a PHICH group is allocated to the user equipment according to the first preset number corresponding to the user equipment. In the process of determining a first target PHICH group allocated to the user, a PHICH group satisfying a first preset condition is referred to as a first target PHICH group, and specifically, the first preset condition includes: user equipment is not allocated to the PHICHs in the PHICH group, or the allocated PHICHs allocated to the user equipment exist in the PHICH group, the importance degree of the user equipment to which the allocated PHICHs are allocated is the same as that of the user equipment, and the number of the allocated PHICHs is smaller than the first preset number corresponding to the user equipment.
Specifically, the process of determining the first target PHICH group satisfying the first preset condition for the user equipment may include steps a1 to A3:
step A1: and acquiring a preset cyclic shift value, and determining a pending PHICH group corresponding to the cyclic shift value.
In this embodiment, the duplet is defined in 3GPP 36.213
Figure BDA0001547865240000081
Uniquely designating a PHICH for transmitting feedback information, wherein
Figure BDA0001547865240000082
For the index of the PHICH group,
Figure BDA0001547865240000083
for the PHICH group internal orthogonal sequence index, the PHICH group index is calculated as shown in the following formula (1), and the PHICH group internal orthogonal sequence index is calculated as shown in the following formula (2).
Figure BDA0001547865240000091
Figure BDA0001547865240000092
In the formula (I), the compound is shown in the specification,
Figure BDA0001547865240000093
is the number of PHICH groups, nDMRSFor cyclic shift of Demodulation Reference Signal (DMRS), the cyclic shift is carried in downlink Control Signal 0 (DCI 0).
Figure BDA0001547865240000094
For a normal cyclic prefix of 4 and for an extended cyclic prefix of 2.
Figure BDA0001547865240000095
Starting a Resource Block (RB) location for an allocated Physical Uplink Shared Channel (PUSCH).
For Frequency Division Duplex (FDD) mode,
Figure BDA0001547865240000096
the calculation can be performed by the following equation (3):
Figure BDA0001547865240000097
wherein N isgThe values of the high-level configuration can be 1/6, 1/2, 1 and 2,
Figure BDA0001547865240000098
is the downlink RB number.
In TDD mode, the adjustment factor m is multiplied under different sub-frames and sub-frame ratiosi，IPHICHOnly if the uplink and downlink configuration of TDD is 0 and the PUSCH is 0 or 5 in the downlink subframe of subframe 4 or 9 (corresponding to Acknowledgement/Negative Acknowledgement (ACK/NACK)), its m isiWhen PUSCH transmitted by 2 different uplink subframes needs to be transmitted on the same downlink subframe to respond ACK/NACK), the value is 1; otherwise, the value is 0.
In this step, a preset cyclic shift value is used to calculate a PHICH group index corresponding to the cyclic shift value according to the formula (1), and a PHICH group corresponding to the PHICH group index is determined as an undetermined PHICH group.
Step A2: and judging whether the to-be-determined PHICH group meets a first preset condition corresponding to the user equipment.
After the pending PHICH group is obtained, in this step, it is determined whether the pending PHICH group satisfies a first target PHICH group of a first preset condition corresponding to the user equipment, that is, no user equipment is allocated to the PHICH in the pending PHICH group, or user equipment is allocated to the pending PHICH group, but the allocated user equipment and the user equipment have the same importance degree, and the PHICH number of the allocated user equipment is smaller than a first preset number corresponding to the user equipment. And executing the step A3 when the pending PHICH group meets the first preset condition, and executing the step A4 when the pending PHICH group does not meet the first preset condition.
Step A3: and determining the pending PHICH group as a first target PHICH group corresponding to the user equipment.
In step a2, when it is determined that the pending PHICH group meets the first preset condition, the action of this step is executed, that is, the pending PHICH group is determined to be the first target PHICH group corresponding to the user equipment.
Step A4: and adjusting the cyclic shift value, and determining the to-be-determined PHICH group corresponding to the adjusted cyclic shift value.
In step a2, when it is determined that the pending PHICH group does not satisfy the first preset condition, the operation of this step is performed, that is, the cyclic shift value is adjusted, the PHICH group corresponding to the adjusted cyclic shift value is determined by formula (1), and the determined PHICH group is determined as the pending PHICH group, and then, the step a2 is returned to, and the step of continuously determining whether the pending PHICH group satisfies the first preset condition is continued until the first target PHICH group satisfying the first preset condition is allocated to the user equipment.
In the present embodiment, the user equipment served by the base station includes a plurality of user equipments, each user equipment served by the base station needs to be allocated with a first target PHICH group meeting a first preset condition, and for any user equipment, the PHICH group allocated to the user equipment can be determined according to the above steps 101 to 103, so as to obtain a corresponding relationship between each user equipment served by the base station and the first target PHICH group.
After determining the PHICH group corresponding to each user equipment, because there are multiple PHICH numbers for sending feedback information in the PHICH group allocated to the user equipment, the embodiment also needs to determine the correspondence between the PHICH in one PHICH group and the user equipment allocated to the group. Specifically, for a PHICH group, the process of determining a correspondence between PHICHs in the PHICH group and user equipments allocated to the PHICH group may include: for each user equipment allocated to the PHICH group, a PHICH orthogonal sequence index corresponding to the user equipment is calculated, and specifically,
the number of orthogonal sequences available for one PHICH group is shown in the following table. It can be seen that, for a normal cyclic prefix, one PHICH group supports 8 orthogonal sequences, i.e., 8 PHICH multiplexing; for an extended cyclic prefix, one PHICH group supports 4 orthogonal sequences, i.e., 4 PHICH multiplexes.
Figure BDA0001547865240000111
In this step, a PHICH orthogonal sequence index allocated to each ue in a PHICH group is determined, and after the PHICH orthogonal sequence index allocated to each ue in the PHICH group is determined, feedback information corresponding to the ue is sent to each ue served by the base station by using the PHICH group corresponding to the ue and the PHICH in the PHICH group.
In practical application, the PHICH group and the PHICH group allocated to each ue in this embodiment may be configured such that, when sending the feedback information corresponding to the ue, no sending of the feedback information corresponding to the ue occurs.
Referring to fig. 2, a specific process of reallocating a PHICH group to user equipments needing to adjust the PHICH group according to a discontinuous transmission ratio corresponding to each user equipment may refer to fig. 2, where fig. 2 shows a flowchart of an embodiment of a method for adjusting a PHICH group in the embodiment of the present application, where the embodiment of the method for adjusting a PHICH group may include the following steps:
in this embodiment, the methods for adjusting the PHICH group and the PHICH for each ue are the same, and therefore, in this embodiment, a process for specifically adjusting the allocation of the PHICH group and the PHICH for the ue is described in detail for only one ue.
Step 201: and determining the discontinuous transmission ratio corresponding to the user equipment.
In this step, a discontinuous transmission ratio corresponding to the ue is determined, where the discontinuous transmission ratio corresponding to the ue is: in practical applications, the number of times of discontinuous transmission corresponding to the ue is proportional to the total number of times of transmission corresponding to the ue.
Step 202: and judging whether the discontinuous transmission ratio corresponding to the user equipment exceeds a preset value, if so, executing the step 203, and if not, ending the step.
After the discontinuous transmission ratio corresponding to the user equipment is determined, then, in the step, whether the discontinuous transmission ratio corresponding to the user equipment is larger than a preset value is determined, if so, the fact that the first target PHICH group and the PHICH which need to be allocated to the user cannot meet the performance required by the user equipment is indicated, and therefore the PHICH group needs to be reallocated to the user equipment; if the PHICH group and the PHICH group are smaller than the preset value, the fact that the first target PHICH group and the PHICH which are allocated to the user equipment meet the requirements of the user equipment is indicated, and at the moment, the PHICH group and the PHICH which correspond to the user equipment are kept unchanged. When the discontinuous transmission ratio corresponding to the ue is greater than the preset value, step 203 is executed.
Step 203: and determining a second preset number corresponding to the user equipment.
Specifically, in this step, a second preset number corresponding to the ue is determined, where the second preset number is the number used for sending the feedback information PHICH in the PHICH group reallocated to the ue, and for convenience of description, this embodiment is referred to as the second preset number.
Step 204: and determining a second target PHICH group meeting a second preset condition corresponding to the user equipment by adjusting the cyclic shift value of the demodulation reference signal.
After determining the second preset number corresponding to the ue, in this step, the PHICH group meeting the second preset condition corresponding to the ue is determined by adjusting the cyclic shift value of the demodulation reference signal according to the second preset number. The second preset condition that the second target PHICH group corresponding to the user needs to satisfy includes: user equipment is not allocated to the PHICHs in the second target PHICH group, or the importance degree of the user equipment allocated to the PHICHs in the second target PHICH group is the same as that of the user equipment, and the number of the PHICHs of the allocated user equipment is smaller than a second preset number corresponding to the user equipment.
Specifically, the process of determining the second target PHICH group corresponding to the user equipment according to the second preset condition and the second preset number corresponding to the user equipment is the same as the method for determining the first target PHICH group for the user equipment in step 103 in the method embodiment corresponding to fig. 1, and specific details may refer to step 103 in the method embodiment corresponding to fig. 1, which is not described herein again.
Step 205: and determining an orthogonal sequence index of the PHICH allocated to the user equipment from the PHICHs included in the second target PHICH group.
In the above steps 201 to 204, the user equipment that needs to reallocate the PHICH group is determined, the second target PHICH group that meets the second preset condition is reallocated to the user equipment, and after the second target PHICH group is reallocated to the user equipment, in this step, the PHICH allocated to the user equipment needs to be determined for the PHICH in the second target PHICH group to which the user equipment corresponds.
Specifically, the process of determining the orthogonal sequence index of the PHICH in the second target PHICH group corresponding to the user equipment is similar to the method for determining the corresponding PHICH orthogonal sequence index for the user equipment in the method embodiment corresponding to fig. 1, and details are not repeated here.
In the embodiment, for each user equipment, the number of times that the PHICH corresponding to the user equipment fails to send feedback information is counted, the ratio of the total times of sending feedback information by the PHICH corresponding to the user equipment is used as the discontinuous transmission ratio corresponding to the user equipment, when the discontinuous transmission ratio exceeds a preset value, it indicates that the PHICH allocated for the preset cannot satisfy the performance required by the user equipment, when the proportion of the discontinuous transmission corresponding to the user equipment exceeds a preset value, the embodiment reallocates the PHICH group for the user equipment and allocates the PHICH in the PHICH group, for the user equipment with the discontinuous transmission ratio not exceeding the preset value, the corresponding PHICH holds the PHICH group and the PHICH allocated to the user equipment in the embodiment of the method corresponding to the figure 1, so that the PHICH group and PHICH allocated to each user equipment can be guaranteed to satisfy the needs of the user equipment.
In the method embodiment corresponding to fig. 2, a PHICH group corresponding to each user equipment and a PHICH in the PHICH group are obtained, and then a corresponding relationship between each user equipment and the PHICH is obtained, so that a process of sending feedback information for each user equipment based on the corresponding relationship between the user equipment and the PHICH is performed, as shown in fig. 3, fig. 3 shows a flowchart of an embodiment of a method for feeding back PHICH information in this application, and the method embodiment may include:
step 301: when receiving a command that feedback information needs to be sent for service data transmitted by an uplink shared physical channel, obtaining the importance degree of user equipment to be processed that needs to send the feedback information.
In this embodiment, when the scheduler on the base station side receives a command that needs to send feedback information for service data transmitted on an uplink shared physical channel, in this step, the scheduler obtains an importance level of a ue that needs to send feedback information, and for convenience of description, this embodiment refers to the ue that needs to send feedback information as a ue to be processed, that is, the importance level of the ue to be processed is obtained in this step.
In this embodiment, the process of sending feedback information for each ue to be processed is the same, and for convenience of description, the process of sending feedback information for the ue is described in detail by taking one ue to be processed as an example in this embodiment.
Step 302: and acquiring the preset transmitting power of the PHICH group corresponding to the user equipment to be processed.
After the importance degree of the ue to be processed is obtained, in this step, a PHICH group corresponding to the ue to be processed and a PHICH orthogonal sequence index in the PHICH group are obtained in the embodiment corresponding to fig. 2, where the PHICH orthogonal sequence index corresponding to the ue to be processed is the PHICH orthogonal sequence index corresponding to the ue to be processed in the embodiment of the method corresponding to fig. 2. In addition, in this step, preset transmission power of the PHICH group is acquired, and the transmission power is set by a technician.
Step 303: and sending feedback information corresponding to the user equipment to be processed according to the PHICH orthogonal sequence index corresponding to the user equipment to be processed and the sending power of the PHICH group corresponding to the user equipment to be processed.
And when the PHICH group corresponding to the user equipment to be processed and the orthogonal sequence index of the PHICH corresponding to the user equipment to be processed are determined, the PHICH corresponding to the user equipment to be processed is uniquely determined, and then the feedback information corresponding to the user equipment to be processed is sent according to the sending power of the PHICH corresponding to the user equipment to be processed.
In the above steps 301 to 303, according to the method embodiment corresponding to fig. 2, the PHICH group corresponding to the user equipment to be processed, the orthogonal sequence index of the PHICH in the PHICH group, and the transmission power of the PHICH group corresponding to the user equipment to be processed, the feedback information corresponding to the user equipment to be processed is transmitted. In practical application, when an instruction that feedback information needs to be sent is received, and there is no key user equipment with a preset importance degree in user equipment to be processed that needs to send feedback information, in this case, for the user equipment to be processed, a process of sending feedback information in the present embodiment is as shown in fig. 4, where fig. 4 shows a flowchart of another feedback method embodiment of PHICH information in the present application, and the method embodiment may include the following steps:
step 401: and determining the arrangement sequence of the PHICH groups corresponding to the user equipment as the sequence of the PHICH group priorities from high to low to be allocated according to the sequence of the importance degrees of the user equipment served by the base station from high to low.
In this embodiment, according to the embodiment corresponding to fig. 2, the corresponding relationship between the user equipment and the PHICH groups is obtained in order from high to low in the importance degree of the user equipment, and the arrangement order of the PHICH groups corresponding to each user equipment with high to low in the importance degree is obtained in sequence.
Step 402: and sequentially determining target user equipment to be processed according to the sequence of the importance degrees of the user equipment to be processed from high to low.
Since the application scenario of this embodiment is that there are multiple pieces of to-be-processed user equipment to which feedback information is to be sent, and there is no key user equipment that meets a preset importance level in the multiple pieces of to-be-processed user equipment, in this step, the to-be-processed user equipment is sequentially determined according to the order of importance levels corresponding to the multiple pieces of to-be-processed user equipment from high to low, and for convenience of description, the to-be-processed user equipment is referred to as target to-be-processed user equipment in this embodiment.
In this embodiment, the process of sending the feedback information corresponding to each target ue to be processed is the same for each target ue to be processed, and next, in step 403 and step 404, the process of sending the feedback information for the target ue to be processed is described in detail by taking one target ue to be processed as an example.
Step 403: and determining the PHICH groups allocated to the target user equipment to be processed according to the priority of the PHICH groups from high to low to-be-allocated sequence and the PHICH number which is corresponding to each PHICH group and can be allocated to the user equipment.
In determining the corresponding relationship between the user equipment and the PHICH group corresponding to fig. 2, the priority of the PHICH group is from high to low to be allocated, and the maximum number of PHICHs used for sending feedback information in each PHICH group, then, in this step, for the determined target user equipment to be processed, the PHICH group with the highest priority among the PHICH groups which are not currently allocated to the user equipment is used as the PHICH group corresponding to the target user equipment to be processed, and a PHICH orthogonal sequence index is allocated to the target user equipment to be processed from the currently determined PHICH group, at this time, the PHICH group and the PHICH used for sending feedback information are allocated to the target user equipment to be processed.
Step 404: and sending the feedback information of the target user equipment to be processed according to the orthogonal sequence index of the PHICH corresponding to the target user equipment to be processed and the sending power of the PHICH group corresponding to the target user equipment to be processed.
After determining the PHICH group and PHICH currently allocated to the target ue, in this step, according to the preset transmission power of the PHICH allocated to the target ue in the embodiment of the method corresponding to fig. 3, the feedback information corresponding to the target ue is sent according to the preset transmission power by the PHICH corresponding to the target ue.
According to the embodiment, the PHICH group and the PHICH which are allocated to each user equipment and the preset power of each PHICH group are adopted for each user equipment, the PHICH corresponding to the user equipment is adopted to send the feedback information, the importance degree of the user equipment corresponding to the PHICH group corresponding to each user equipment is the same, and the PHICH number used for sending the feedback information in the PHICH group is related to the important program of the user equipment, so that the PHICH performance for sending the feedback information by the user equipment can meet the performance requirement required by the user equipment.
Referring to fig. 5, a schematic structural diagram of an apparatus embodiment for allocating PHICH groups in the present application is shown, where the apparatus embodiment may include:
a first obtaining unit 501, configured to obtain importance of a ue to be allocated a PHICH group;
a first determining unit 502, configured to determine a first preset number corresponding to the importance degree of the user equipment; the first preset number represents the maximum number of PHICHs to be allocated to the PHICH group of the user equipment and used for sending feedback information; the first preset numbers corresponding to different importance degrees are different, and the higher the importance degree is, the smaller the first preset number corresponding to the importance degree is;
the first determining unit 502 may include:
an obtaining subunit, configured to obtain a preset cyclic shift value used for determining the PHICH group;
a first determining subunit, configured to determine a pending PHICH group corresponding to the cyclic shift value;
a determining subunit, configured to determine whether the pending PHICH group meets the first preset condition;
a second determining subunit, configured to determine the pending PHICH group as a first target PHICH group when the determining subunit determines that the pending PHICH group satisfies the first preset condition;
and the third determining subunit is used for adjusting the cyclic shift value, determining the undetermined PHICH group corresponding to the adjusted cyclic shift value when the judging subunit judges that the undetermined PHICH group does not meet the first preset condition, and returning to execute the step of judging whether the undetermined PHICH group meets the first preset condition until determining a first target PHICH group meeting the first preset condition.
A second determining unit 503, configured to determine a first target PHICH group that satisfies a first preset condition, and determine the first target PHICH group as a PHICH group allocated to the user equipment; the first preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, there is an allocated PHICH allocated to the user equipment in the PHICH group, the user equipment to which the allocated PHICH is allocated has the same degree of importance as the user equipment, and the number of the allocated PHICHs is less than the first preset number.
The device further comprises:
a third determining unit, configured to determine an orthogonal sequence index of the allocated PHICH from the PHICHs included in the first target PHICH group;
a fourth determining unit, configured to determine a relationship between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
A fifth determining unit, configured to determine a discontinuous transmission ratio corresponding to the ue; the discontinuous transmission ratio is as follows: the ratio of the number of times that the PHICH allocated to the user equipment unsuccessfully transmits feedback information to the user equipment to the total number of times that the PHICH transmits the feedback information to the user equipment;
a second obtaining unit, configured to obtain a second preset number corresponding to an importance degree of the user equipment when a discontinuous transmission ratio corresponding to the user equipment exceeds a preset value, where the second preset number represents a maximum number of PHICHs to be reallocated to the user equipment, and is used for sending feedback information, and the second preset number is smaller than the first preset number;
a sixth determining unit, configured to determine a second target PHICH group that satisfies a second preset condition; the second preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, the PHICH group has an allocated PHICH allocated to the user equipment, the user equipment corresponding to the allocated PHICH has the same importance degree as the user equipment, and the number of the allocated PHICH is smaller than the second preset number.
A seventh determining unit configured to determine an orthogonal sequence index of the allocated PHICH from the PHICHs included in the second target PHICH group;
an eighth determining unit, configured to determine a correspondence between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
Referring to fig. 6, an allocation apparatus of a PHICH group in the present application is shown, and the allocation apparatus may include: a memory 601 and a processor 602, wherein,
a memory 601 for storing programs;
a processor 602 configured to execute the program, wherein the processor 602 implements the method when executing the program.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. In this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprising," "including," and the like, as used herein, are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to". The invention can be applied to various fields, such as a mobile phone, a mobile phone.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A method for allocating PHICH groups, the method comprising:
acquiring the importance degree of user equipment to be allocated with the PHICH group;
determining a first preset number corresponding to the importance degree of the user equipment, wherein the first preset number represents the maximum number of PHICHs used for sending feedback information in a PHICH group to be allocated to the user equipment; the first preset numbers corresponding to different importance degrees are different, and the higher the importance degree is, the smaller the first preset number corresponding to the importance degree is;
determining a first target PHICH group satisfying a first preset condition, and determining the first target PHICH group as a PHICH group allocated to the user equipment, the first preset condition including: the PHICHs in the PHICH group are not allocated to the user equipment; or, there is an allocated PHICH allocated to the user equipment in the PHICH group, the user equipment to which the allocated PHICH is allocated has the same degree of importance as the user equipment, and the number of the allocated PHICHs is less than the first preset number.
2. The method of claim 1, wherein the determining a first target PHICH group satisfying a first preset condition comprises:
acquiring a preset cyclic shift value for determining a PHICH group;
determining a pending PHICH group corresponding to the cyclic shift value;
judging whether the pending PHICH group meets the first preset condition or not;
if the pending PHICH group meets the first preset condition, determining the pending PHICH group as a first target PHICH group;
if the undetermined PHICH group does not meet the first preset condition, adjusting the cyclic shift value, determining the undetermined PHICH group corresponding to the adjusted cyclic shift value, and returning to execute the step of judging whether the undetermined PHICH group meets the first preset condition until a first target PHICH group meeting the first preset condition is determined.
3. The method of claim 1, wherein after the determining a first target PHICH group satisfying a first preset condition and determining the first target PHICH group as the PHICH group allocated to the user equipment, further comprising:
determining an orthogonal sequence index of the allocated PHICH from PHICHs included in the first target PHICH group;
determining a relationship between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
4. The method of claim 3, wherein after determining an orthogonal sequence index to which a PHICH has been allocated from the PHICHs included in the first target PHICH group, further comprising:
determining a discontinuous transmission ratio corresponding to the user equipment; the discontinuous transmission ratio is as follows: the ratio of the number of times that the PHICH allocated to the user equipment unsuccessfully transmits feedback information to the user equipment to the total number of times that the PHICH transmits the feedback information to the user equipment;
if the discontinuous transmission ratio corresponding to the user equipment exceeds a preset value, acquiring a second preset number corresponding to the importance degree of the user equipment, wherein the second preset number represents the maximum number of PHICHs used for sending feedback information in a PHICH group to be reallocated to the user equipment, and the second preset number is smaller than the first preset number;
determining a second target PHICH group meeting a second preset condition; the second preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, the PHICH group has an allocated PHICH allocated to the user equipment, the user equipment corresponding to the allocated PHICH has the same importance degree as the user equipment, and the number of the allocated PHICH is smaller than the second preset number.
5. The method of claim 4, wherein after the determining a second target PHICH group satisfying a second preset condition, further comprising:
determining an orthogonal sequence index of the allocated PHICH from PHICHs included in the second target PHICH group;
and determining the corresponding relation between the orthogonal sequence index of the allocated PHICH and the user equipment.
6. An apparatus for allocating PHICH groups, the apparatus comprising:
a first obtaining unit, configured to obtain importance of a user equipment to which a PHICH group is to be allocated;
a first determining unit for determining a first preset number corresponding to the degree of importance of the user equipment; the first preset number represents the maximum number of PHICHs to be allocated to the PHICH group of the user equipment and used for sending feedback information; the first preset numbers corresponding to different importance degrees are different, and the higher the importance degree is, the smaller the first preset number corresponding to the importance degree is;
a second determining unit, configured to determine a first target PHICH group that satisfies a first preset condition, and determine the first target PHICH group as a PHICH group allocated to the user equipment; the first preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, there is an allocated PHICH allocated to the user equipment in the PHICH group, the user equipment to which the allocated PHICH is allocated has the same degree of importance as the user equipment, and the number of the allocated PHICHs is less than the first preset number.
7. The apparatus of claim 6, wherein the second determining unit comprises:
an obtaining subunit, configured to obtain a preset cyclic shift value used for determining the PHICH group;
a first determining subunit, configured to determine a pending PHICH group corresponding to the cyclic shift value;
a determining subunit, configured to determine whether the pending PHICH group meets the first preset condition;
a second determining subunit, configured to determine the pending PHICH group as a first target PHICH group when the determining subunit determines that the pending PHICH group satisfies the first preset condition;
and the third determining subunit is used for adjusting the cyclic shift value, determining the undetermined PHICH group corresponding to the adjusted cyclic shift value when the judging subunit judges that the undetermined PHICH group does not meet the first preset condition, and returning to execute the step of judging whether the undetermined PHICH group meets the first preset condition until determining a first target PHICH group meeting the first preset condition.
8. The apparatus of claim 6, further comprising:
a third determining unit, configured to determine an orthogonal sequence index of the allocated PHICH from the PHICHs included in the first target PHICH group;
a fourth determining unit, configured to determine a relationship between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
9. The apparatus of claim 8, further comprising:
a fifth determining unit, configured to determine a discontinuous transmission ratio corresponding to the ue; the discontinuous transmission ratio is as follows: the ratio of the number of times that the PHICH allocated to the user equipment unsuccessfully transmits feedback information to the user equipment to the total number of times that the PHICH transmits the feedback information to the user equipment;
a second obtaining unit, configured to obtain a second preset number corresponding to an importance degree of the user equipment when a discontinuous transmission ratio corresponding to the user equipment exceeds a preset value, where the second preset number represents a maximum number of PHICHs to be reallocated to the user equipment, and is used for sending feedback information, and the second preset number is smaller than the first preset number;
a sixth determining unit, configured to determine a second target PHICH group that satisfies a second preset condition; the second preset condition includes: the PHICHs in the PHICH group are not allocated to the user equipment; or, the PHICH group has an allocated PHICH allocated to the user equipment, the user equipment corresponding to the allocated PHICH has the same importance degree as the user equipment, and the number of the allocated PHICH is smaller than the second preset number.
10. The apparatus of claim 9, further comprising:
a seventh determining unit configured to determine an orthogonal sequence index of the allocated PHICH from the PHICHs included in the second target PHICH group;
an eighth determining unit, configured to determine a correspondence between the orthogonal sequence index to which the PHICH has been allocated and the user equipment.
11. An apparatus for allocating PHICH groups, the apparatus comprising:
a memory for storing a program;
a processor for executing the program, the processor implementing the method of claims 1-5 when executing the program.
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