CN109587794B - Method and device for realizing PUCCH frequency hopping and user equipment - Google Patents
Method and device for realizing PUCCH frequency hopping and user equipment Download PDFInfo
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Abstract
The invention provides a method and a device for realizing PUCCH frequency hopping and user equipment. The method comprises the following steps: acquiring the length of an uplink OFDM symbol in a time slot; when the length of the uplink OFDM symbol is even, for a long PUCCH, frequency hopping is carried out at the middle position of the length of the uplink OFDM symbol; and when the uplink OFDM symbol length is odd, for the long PUCCH, frequency hopping is carried out at the middle position of the upward rounding or the downward rounding of the uplink OFDM symbol length. According to the invention, when the PUCCH lengths of frequency hopping at more than two corresponding positions are different, the PUCCH resources are ensured not to collide or overlap data, and the base station is ensured to normally receive the PUCCH.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and apparatus for implementing PUCCH frequency hopping, and a user equipment.
Background
As shown in fig. 1, a frame structure diagram of a 3GPP (3 rd Generation Partnership Project, third generation partnership project) NR (New Radio) system is shown, where each Radio frame is divided into 10 equally sized subframes of length 1ms within a Radio frame of length 10ms in time domain, and each subframe may include a plurality of slots with different subcarrier intervals. Each time slot is composed of a certain number of symbols, and the number of the symbols is determined by a CP (Cyclic Prefix) type, and when a common CP is adopted, each time slot contains 16 symbols; when extended CP is employed, each slot contains 6 symbols.
The PUCCH (Physical Uplink Control Channel ) is one physical channel of the uplink in the NR system, where uplink control information is carried. The intent of setting the PUCCH is that when the user is not scheduled, i.e., is not allocated UL-SCH (Uplink Shared Channel ) resources, the user transfers L1/L2 control information including a channel status report, HARQ (Hybrid Automatic Repeat reQuest ) acknowledgement (ACK/NACK), and a scheduling request using the PUCCH, wherein the channel status report includes: precoding matrix indicator PMI (Precoding Matrix Indicator ) and channel quality indicator CQI (Channel Quality Indicator ), etc.
The PUCCH format is shown in table 1, where the number of OFDM symbols occupied by PUCCH format 1 and format 3 is large, and is called long PUCCH.
TABLE 1
| PUCCH format | Length in OFDM symbols | Number of bits |
| 0 | 1–2 | ≤2 |
| 1 | 4–12 | ≤2 |
| 2 | 1–2 | >2 |
| 3 | 4–12 | >2 |
If the long PUCCH hops during transmission, as shown in fig. 1, that is, in the same slot, PRB (Physical Resource Block ) resources of two parts before and after the PUCCH are respectively located in different spectrum resources, it is possible to provide frequency diversity gain of the PUCCH. The frequency hopping method of the existing long PUCCH includes the following two methods:
mode 1: frequency hopping is performed in the middle of the PUCCH length. Frequency hopping with the PUCCH length as a reference, if the PUCCH lengths of two or more corresponding position frequency hopping are different, PUCCH resource collision or data superposition may be caused, which affects the base station to receive PUCCH, as shown in fig. 2.
Mode 2: frequency hopping is performed in the middle of the slot length. If the long PUCCH is in the latter half of the slot, the long PUCCH does not hop, and there is no frequency domain diversity gain, as shown in fig. 3.
Disclosure of Invention
According to the method, the device and the user equipment for realizing the PUCCH frequency hopping, when the PUCCH lengths of the frequency hopping at more than two corresponding positions are different, the PUCCH resources are ensured not to collide or overlap data, and the base station is ensured to normally receive the PUCCH.
In a first aspect, the present invention provides a method for implementing PUCCH frequency hopping, including:
acquiring the length of an uplink OFDM symbol in a time slot;
when the length of the uplink OFDM symbol is even, for a long PUCCH, frequency hopping is carried out at the middle position of the length of the uplink OFDM symbol;
and when the uplink OFDM symbol length is odd, for the long PUCCH, frequency hopping is carried out at the middle position of the upward rounding or the downward rounding of the uplink OFDM symbol length.
Optionally, for the long PUCCH, frequency hopping at a middle position of the uplink OFDM symbol length includes:
according to a first frequency domain resource position and a second frequency domain resource position configured by a base station through high-layer signaling, for a long PUCCH, frequency hopping is carried out from the first frequency domain resource position to the second frequency domain resource position at the middle position of the length of the uplink OFDM symbol; or,
and according to a first frequency domain resource position and frequency domain offset configured by a base station through a high-layer signaling, for a long PUCCH, frequency hopping is carried out from the first frequency domain resource position to a second frequency domain resource position at the middle position of the length of the uplink OFDM symbol, wherein the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
Optionally, for the long PUCCH, frequency hopping at a middle position of the up-rounding or the down-rounding of the uplink OFDM symbol length includes:
according to a first frequency domain resource position and a second frequency domain resource position configured by a base station through high-layer signaling, for a long PUCCH, frequency hopping is carried out from the first frequency domain resource position to the second frequency domain resource position at an intermediate position of the uplink OFDM symbol length, wherein the intermediate position is rounded upwards or rounded downwards; or,
and according to a first frequency domain resource position and frequency domain offset configured by a base station through a high-layer signaling, for a long PUCCH, frequency hopping is carried out at an intermediate position of the uplink OFDM symbol length, which is rounded up or rounded down, and the frequency hopping is carried out from the first frequency domain resource position to a second frequency domain resource position, wherein the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
In a second aspect, the present invention provides an implementation apparatus for PUCCH frequency hopping, including:
an acquisition unit, configured to acquire an uplink OFDM symbol length in one slot;
a first frequency hopping unit, configured to, when the uplink OFDM symbol length is even, perform frequency hopping on a long PUCCH at a middle position of the uplink OFDM symbol length;
and the second frequency hopping unit is used for frequency hopping the long PUCCH at the middle position of the upward rounding or the downward rounding of the length of the uplink OFDM symbol when the length of the uplink OFDM symbol is odd.
Optionally, the first frequency hopping unit is configured to hop, for the long PUCCH, from a first frequency domain resource position to a second frequency domain resource position at a middle position of the uplink OFDM symbol length according to a first frequency domain resource position and a second frequency domain resource position configured by the base station through higher layer signaling; or, according to a first frequency domain resource position and frequency domain offset configured by the base station through a higher layer signaling, for a long PUCCH, frequency hopping from the first frequency domain resource position to a second frequency domain resource position is performed at a middle position of the uplink OFDM symbol length, where the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
Optionally, the second frequency hopping unit is configured to hop, for the long PUCCH, from a first frequency domain resource position to a second frequency domain resource position at an intermediate position of the uplink OFDM symbol length that is rounded up or rounded down according to a first frequency domain resource position and a second frequency domain resource position configured by the base station through higher layer signaling; or, according to a first frequency domain resource position and frequency domain offset configured by the base station through the higher layer signaling, for the long PUCCH, frequency hopping is performed at an intermediate position of the uplink OFDM symbol length, where the intermediate position is rounded up or rounded down, and frequency hopping is performed from the first frequency domain resource position to a second frequency domain resource position, where the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
In a third aspect, the present invention provides a user equipment, where the user equipment includes the apparatus for implementing PUCCH frequency hopping.
According to the implementation method, the device and the user equipment for the PUCCH frequency hopping, according to the length of the uplink OFDM symbol in one time slot, when the length of the uplink OFDM symbol is even, the frequency hopping is carried out at the middle position of the length of the uplink OFDM symbol for the long PUCCH, and when the length of the uplink OFDM symbol is odd, the frequency hopping is carried out at the middle position of the ascending integer or the descending integer of the length of the uplink OFDM symbol for the long PUCCH. Compared with the prior art, the method and the device can ensure that the PUCCH resources cannot collide or overlap data when the PUCCH lengths of frequency hopping at more than two corresponding positions are different, and ensure that the base station normally receives the PUCCH.
Drawings
Fig. 1 is a schematic diagram of PUCCH frequency hopping in the prior art;
fig. 2 is a schematic diagram of PUCCH hopping of two different lengths in the prior art;
fig. 3 is another schematic diagram of frequency hopping of one PUCCH in the prior art;
fig. 4 is a flowchart of a method for implementing PUCCH frequency hopping according to an embodiment of the present invention;
fig. 5 is a schematic diagram of PUCCH frequency hopping according to an embodiment of the present invention;
fig. 6 is a schematic diagram of PUCCH frequency hopping with two different lengths according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a PUCCH frequency hopping implementation device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a method for realizing PUCCH frequency hopping, which is applied to user equipment, as shown in fig. 4, and comprises the following steps:
s11, acquiring the length of an uplink OFDM (Orthogonal Frequency Division Multiplexing ) symbol in one time slot.
And S12, when the length of the uplink OFDM symbol is even, for the long PUCCH, frequency hopping is carried out at the middle position of the length of the uplink OFDM symbol.
Specifically, the user equipment may hop frequency from a first frequency domain resource position to a second frequency domain resource position at a middle position of the uplink OFDM symbol length for a long PUCCH according to the first frequency domain resource position and the second frequency domain resource position configured by the base station through higher layer signaling; or,
the user equipment can hop frequency from a first frequency domain resource position to a second frequency domain resource position at the middle position of the uplink OFDM symbol length for a long PUCCH according to the first frequency domain resource position and the frequency domain offset configured by the base station through the high-layer signaling, wherein the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
Wherein the frequency domain offset may also be an implicit decision, such as half of the current bandwidth. The ue may perform frequency hopping on the long PUCCH according to the first frequency domain resource location configured by the base station through the higher layer signaling and the implicitly determined frequency domain offset.
And S13, when the length of the uplink OFDM symbol is odd, for the long PUCCH, frequency hopping is carried out at the middle position of the upward rounding or the downward rounding of the length of the uplink OFDM symbol.
Specifically, according to a first frequency domain resource position and a second frequency domain resource position configured by a base station through high-layer signaling, for a long PUCCH, the user equipment hops from the first frequency domain resource position to the second frequency domain resource position at an intermediate position where the length of the uplink OFDM symbol is rounded up or rounded down; or,
the user equipment can carry out frequency hopping on the middle position of the uplink OFDM symbol length which is rounded up or rounded down according to the first frequency domain resource position and the frequency domain offset which are configured by the base station through the high-layer signaling, and the frequency hopping is carried out from the first frequency domain resource position to the second frequency domain resource position, wherein the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
Wherein the frequency domain offset may also be an implicit decision, such as half of the current bandwidth. The ue may perform frequency hopping on the long PUCCH according to the first frequency domain resource location configured by the base station through the higher layer signaling and the implicitly determined frequency domain offset.
According to the implementation method of the PUCCH frequency hopping provided by the embodiment of the invention, according to the length of the uplink OFDM symbol in one time slot, when the length of the uplink OFDM symbol is even, the long PUCCH is subjected to frequency hopping at the middle position of the length of the uplink OFDM symbol, and when the length of the uplink OFDM symbol is odd, the long PUCCH is subjected to frequency hopping at the middle position of the upper rounding or the lower rounding of the length of the uplink OFDM symbol. Compared with the prior art, the method and the device can ensure that the PUCCH resources cannot collide or overlap data when the PUCCH lengths of frequency hopping at more than two corresponding positions are different, and ensure that the base station normally receives the PUCCH.
The implementation method of PUCCH frequency hopping according to the present invention is described in detail below with reference to specific embodiments.
If the length of the uplink OFDM symbol in one time slot is even N, the frequency hopping point of the long PUCCH is positioned in the middle of the length of the uplink OFDM symbol. That is, the number of uplink OFDM symbols included in the first frequency domain resource position is N/2, and the number of uplink OFDM symbols included in the second frequency domain resource position is N/2.
If the length of the uplink OFDM symbol in one time slot is an odd number M, the frequency hopping point of the long PUCCH is positioned in the middle of the upward rounding or the downward rounding of the length of the uplink OFDM symbol. If the number of uplink OFDM symbols included in the first frequency domain resource position is rounded up, namely, the number of uplink OFDM symbols included in the first frequency domain resource position is ceil (M/2), the number of uplink OFDM symbols included in the second frequency domain resource position is M-ceil (M/2). The number of the uplink OFDM symbols contained in the first frequency domain resource position is floor (M/2), and the number of the uplink OFDM symbols contained in the second frequency domain resource position is M-floor (M/2).
When the long PUCCH length is equal to the uplink OFDM symbol length, the frequency hopping point is also in the middle of the PUCCH length, as shown in fig. 1.
When the long PUCCH length is smaller than the uplink OFDM symbol length, the frequency hopping point is located at a middle position of the uplink OFDM symbol length, as shown in fig. 5.
For example: there is a long PUCCH in a slot, and the uplink OFDM symbol in this slot starts with symbol n and ends with symbol m. The frequency domain resource locations of the long PUCCH within this slot may be:
if the OFDM symbol occupied by the long PUCCH is completely in front of the symbol n+ceil ((m-n+1)/2) -1, the frequency domain resource of the long PUCCH is only located at the first frequency domain resource position; after the OFDM symbol occupied by the long PUCCH is completely positioned behind the symbol n+ceil ((m-n+1)/2) -1, the frequency domain resource of the long PUCCH is only positioned at the second frequency domain resource position; otherwise, the frequency domain resource of the long PUCCH is located at the first frequency domain resource position before the symbol n+ceil ((m-n+1)/2) -1, and the frequency domain resource of the long PUCCH is located at the second frequency domain resource position after the symbol n+ceil ((m-n+1)/2) -1.
Alternatively, the frequency domain resource location of the long PUCCH within this slot may be:
if the OFDM symbol occupied by the long PUCCH is completely in front of the symbol n+floor ((m-n+1)/2) -1, the frequency domain resource of the long PUCCH is only located at the first frequency domain resource position; after the OFDM symbol occupied by the long PUCCH is completely positioned behind the symbol n+floor ((m-n+1)/2) -1, the frequency domain resource of the long PUCCH is only positioned at the second frequency domain resource position; otherwise, the frequency domain resource of the long PUCCH is located at the first frequency domain resource position before the symbol n+floor ((m-n+1)/2) -1, and the frequency domain resource of the long PUCCH is located at the second frequency domain resource position after the symbol n+floor ((m-n+1)/2) -1.
For the two cases, as shown in fig. 6, when the lengths of the PUCCH frequency hopped at more than two corresponding positions are different, the frequency hopping method provided by the embodiment of the present invention can avoid the occurrence of collision or data superposition of the PUCCH resource, and ensure that the base station normally receives the PUCCH.
The embodiment of the invention also provides a device for implementing frequency hopping of the PUCCH, which is located in the user equipment, as shown in fig. 7, and comprises:
an obtaining unit 11, configured to obtain an uplink OFDM symbol length in one slot;
a first frequency hopping unit 12, configured to, when the uplink OFDM symbol length is even, perform frequency hopping on a long PUCCH at a middle position of the uplink OFDM symbol length;
and a second frequency hopping unit 13, configured to, when the uplink OFDM symbol length is odd, perform frequency hopping on the long PUCCH at a middle position rounded up or rounded down of the uplink OFDM symbol length.
According to the implementation device for the frequency hopping of the PUCCH provided by the embodiment of the invention, according to the length of the uplink OFDM symbol in one time slot, when the length of the uplink OFDM symbol is even, the frequency hopping is carried out at the middle position of the length of the uplink OFDM symbol for the long PUCCH, and when the length of the uplink OFDM symbol is odd, the frequency hopping is carried out at the middle position of the upper rounding or the lower rounding of the length of the uplink OFDM symbol for the long PUCCH. Compared with the prior art, the method and the device can ensure that the PUCCH resources cannot collide or overlap data when the PUCCH lengths of frequency hopping at more than two corresponding positions are different, and ensure that the base station normally receives the PUCCH.
Optionally, the first frequency hopping unit 12 is configured to hop, for the long PUCCH, from a first frequency domain resource location to a second frequency domain resource location at a middle location of the uplink OFDM symbol length according to a first frequency domain resource location and a second frequency domain resource location configured by the base station through higher layer signaling; or, according to a first frequency domain resource position and frequency domain offset configured by the base station through a higher layer signaling, for a long PUCCH, frequency hopping from the first frequency domain resource position to a second frequency domain resource position is performed at a middle position of the uplink OFDM symbol length, where the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
Optionally, the second frequency hopping unit 13 is configured to hop, for the long PUCCH, from a first frequency domain resource position to a second frequency domain resource position at an intermediate position of the uplink OFDM symbol length that is rounded up or rounded down according to a first frequency domain resource position and a second frequency domain resource position configured by the base station through higher layer signaling; or, according to a first frequency domain resource position and frequency domain offset configured by the base station through the higher layer signaling, for the long PUCCH, frequency hopping is performed at an intermediate position of the uplink OFDM symbol length, where the intermediate position is rounded up or rounded down, and frequency hopping is performed from the first frequency domain resource position to a second frequency domain resource position, where the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
The device of the present embodiment may be used to execute the technical solution of the foregoing method embodiment, and its implementation principle and technical effects are similar, and are not described herein again.
The embodiment of the invention also provides the user equipment which comprises the device for realizing the PUCCH frequency hopping.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (7)
1. The implementation method of PUCCH frequency hopping is characterized by comprising the following steps:
acquiring the length of an uplink OFDM symbol in a time slot;
when the length of the uplink OFDM symbol is even, for a long PUCCH, frequency hopping is carried out at the middle position of the length of the uplink OFDM symbol;
and when the uplink OFDM symbol length is odd, for the long PUCCH, frequency hopping is carried out at the middle position of the upward rounding or the downward rounding of the uplink OFDM symbol length.
2. The method of claim 1, wherein for a long PUCCH frequency hopping at a middle position of the uplink OFDM symbol length comprises:
according to a first frequency domain resource position and a second frequency domain resource position configured by a base station through high-layer signaling, for a long PUCCH, frequency hopping is carried out from the first frequency domain resource position to the second frequency domain resource position at the middle position of the length of the uplink OFDM symbol; or,
and according to a first frequency domain resource position and frequency domain offset configured by a base station through a high-layer signaling, for a long PUCCH, frequency hopping is carried out from the first frequency domain resource position to a second frequency domain resource position at the middle position of the length of the uplink OFDM symbol, wherein the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
3. The method according to claim 1 or 2, wherein for the long PUCCH frequency hopping at intermediate positions of the up-rounding or down-rounding of the uplink OFDM symbol length comprises:
according to a first frequency domain resource position and a second frequency domain resource position configured by a base station through high-layer signaling, for a long PUCCH, frequency hopping is carried out from the first frequency domain resource position to the second frequency domain resource position at an intermediate position of the uplink OFDM symbol length, wherein the intermediate position is rounded upwards or rounded downwards; or,
and according to a first frequency domain resource position and frequency domain offset configured by a base station through a high-layer signaling, for a long PUCCH, frequency hopping is carried out at an intermediate position of the uplink OFDM symbol length, which is rounded up or rounded down, and the frequency hopping is carried out from the first frequency domain resource position to a second frequency domain resource position, wherein the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
4. A PUCCH hopping realizing device, comprising:
an acquisition unit, configured to acquire an uplink OFDM symbol length in one slot;
a first frequency hopping unit, configured to, when the uplink OFDM symbol length is even, perform frequency hopping on a long PUCCH at a middle position of the uplink OFDM symbol length;
and the second frequency hopping unit is used for frequency hopping the long PUCCH at the middle position of the upward rounding or the downward rounding of the length of the uplink OFDM symbol when the length of the uplink OFDM symbol is odd.
5. The apparatus of claim 4, wherein the first frequency hopping unit is configured to hop, for a long PUCCH, from a first frequency domain resource location to a second frequency domain resource location at a middle location of the uplink OFDM symbol length according to the first frequency domain resource location and the second frequency domain resource location configured by the base station through higher layer signaling; or, according to a first frequency domain resource position and frequency domain offset configured by the base station through a higher layer signaling, for a long PUCCH, frequency hopping from the first frequency domain resource position to a second frequency domain resource position is performed at a middle position of the uplink OFDM symbol length, where the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
6. The apparatus according to claim 4 or 5, wherein the second frequency hopping unit is configured to hop, for a long PUCCH, from a first frequency domain resource location to a second frequency domain resource location at an intermediate location of the uplink OFDM symbol length that is rounded up or rounded down according to the first frequency domain resource location and the second frequency domain resource location configured by the base station through higher layer signaling; or, according to a first frequency domain resource position and frequency domain offset configured by the base station through the higher layer signaling, for the long PUCCH, frequency hopping is performed at an intermediate position of the uplink OFDM symbol length, where the intermediate position is rounded up or rounded down, and frequency hopping is performed from the first frequency domain resource position to a second frequency domain resource position, where the second frequency domain resource position is determined according to the first frequency domain resource position and the frequency domain offset.
7. A user equipment, characterized in that the user equipment comprises the PUCCH frequency hopping implementation device according to any of claims 4 to 6.
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