Phase offset compensation apparatus and method

Abstract

The present disclosure relates to a phase offset compensation device and method, and the phase offset compensation method may include an operation of confirming in a distributed unit whether phase offset compensation is required, an operation of generating in the distributed unit a message including information related to the compensation of the phase offset based on the confirmation, and an operation of transmitting in the distributed unit the generated message to other units connected to the distributed unit.

Description

[Technical Field]

[0001] The following embodiment relates to a technique for compensating for phase offset in an open radio access network. [Background technology]

[0002] The Open Radio Access Network (ORAN) is an organization that redefines and handles fronthaul interface standards between distributed units (DUs) and radio units (RUs) in various functional separation structures, and provides a standard interface in a 7-2x functional separation structure using Ethernet.

[0003] The O-DU (O-RAN Distributed Unit) and O-RU (O-RAN Radio Unit) transmit and receive control information and IQ sample data using the C-plane (Control Plane) and U-plane (User Plane).

[0004] The C-plane consists of a transport layer and an application layer, and the application layer includes a section. The section type within the C-plane is determined according to the characteristics of the received or transmitted U-plane. Among them, section type 3 may be used for channels requiring a time or frequency offset or for different-than-nominal SCS channels.

[0005] Although there are various channels that can be applied to section type 3, two types of phase offsets can commonly occur in channels that use section type 3. One is a phase offset caused by the up-conversion method, and the other is a phase offset that occurs during signal processing of frequency shift.

[0006] Channels applicable to Section Type 3 include PRACH, mixed-numerology, and msgA-PUSCH, and two types of phase offset compensation may be required in whole or in part depending on the channel. The radio unit RU does not necessarily have to compensate for the two types of phase offset. This is because phase offset compensation may not be necessary depending on the channel detection method, and even if phase offset compensation is required, there is no obligation for the radio unit RU to compensate. However, if the radio unit RU must compensate for the phase offset, the radio unit RU must have information that compensation is required. However, under the existing ORAN standard, the O-RU has no way to determine whether any type of phase offset occurs in the signal it is processing or whether phase offset compensation is required. In other words, information about phase offsets is not provided in the ORAN standard. Summary of the Invention [Problem to be solved by the invention]

[0007] The present disclosure provides an apparatus and method for compensating for phase offset in an open wireless access network. [Means for solving the problem]

[0008] According to one embodiment, a method for compensating for a phase offset in an open wireless access network includes an operation 110 in which a distributed unit (DU) 600, 700 determines whether phase offset compensation is required; an operation 120 in which the distributed unit 600, 700 generates a message including information related to the phase offset compensation based on the determination; and an operation 130 in which the distributed unit 600, 700 transmits the generated message to other units connected to the distributed unit.

[0009] In one embodiment, the distributed unit 600 includes a phase offset confirmation unit 612 that confirms whether phase offset compensation is required in an open wireless access network environment; a message generation unit 614 that generates a message including information related to the phase offset compensation based on the confirmation; and a transmission processing unit 616 that transmits the generated message to other units connected to the distributed unit.

[0010] In one embodiment, a distributed unit for compensating for a phase offset in an open wireless access network includes a communication unit 710 and a processor 720, and the processor 720 can determine whether phase offset compensation is necessary in an open wireless access network environment, generate a message including information related to the phase offset compensation based on the determination, and transmit the generated message to other units connected to the distributed unit. [Brief explanation of the drawings]

[0011] [Figure 1] 10 is a flowchart illustrating an operation of determining whether phase offset compensation is required in a distributed unit of an open radio access network according to an embodiment. [Figure 2a] A figure showing an example of displaying related information for phase offset compensation through a reserved area in a session extension field of a C-plane message according to one embodiment. [Figure 2b]A figure showing an example of displaying channel filter information utilizing numPrbc via a reserved area included in the filter index element of section type 3 of a C-plane message. [Figure 3a] A figure showing an example of displaying information related to phase offset compensation via a reserved area in a section type 3 field of a C-plane message according to one embodiment. [Figure 3b] A figure showing an example of displaying channel filter information utilizing numPrbc via a reserved area included in the filter index element of section type 3 of a C-plane message. [Figure 4] A diagram showing the format of a filter index element in section type 3 of a C-plane message according to one embodiment. [Figure 5a] A figure showing an example of displaying information related to phase offset compensation through a reserved area included in a filter index element of section type 3 of a C-plane message according to one embodiment. [Figure 5b] This figure shows an example of displaying channel information that is not included in existing filter index elements but can utilize section type 3 via a reserved area included in a filter index element of section type 3 of a C-plane message according to one embodiment. [Figure 5c] This figure shows an example of displaying channel information that is not included in existing filter index elements but can utilize section type 3 via a reserved area included in a filter index element of section type 3 of a C-plane message according to one embodiment. [Figure 6] FIG. 1 illustrates an example of a distributed unit that provides whether phase offset compensation is required in an open wireless access network according to an embodiment. [Figure 7] FIG. 1 illustrates an example of a distributed unit that provides whether phase offset compensation is required in an open wireless access network according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, various modifications may be made to the embodiments, and the scope of the patent application is not limited or restricted by such embodiments. It should be understood that all modifications, equivalents, and alternatives to the embodiments are included in the scope of the patent.

[0013] The terms used in the embodiments are merely used for the purpose of explanation and are not to be construed as limiting. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, and should be understood as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0014] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention pertains. Commonly used predefined terms should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted as having an ideal or overly formal meaning unless expressly defined herein.

[0015] In addition, in the description with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. In the description of the embodiments, if a detailed description of related known technology is determined to unnecessarily obscure the gist of the embodiments, the detailed description thereof will be omitted.

[0016] Furthermore, when describing components of an embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are used to distinguish the component from other components, and do not limit the nature, order, or sequence of the components. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component can be directly connected or connected to the other component, but that additional components may be "connected," "coupled," or "connected" between each component.

[0017] Components having functions common to those included in any of the embodiments will be described using the same names in other embodiments. Unless otherwise specified, the description of one embodiment will be applied to the other embodiments, and detailed descriptions will be omitted to the extent that they overlap.

[0018] Hereinafter, an apparatus and method for compensating for a phase offset in an open wireless access network according to an embodiment of the present disclosure will be described in detail with reference to the accompanying FIGS.

[0019] FIG. 1 is a flowchart illustrating an operation of providing whether phase offset compensation is required in a distributed unit of an open radio access network according to an embodiment.

[0020] Referring to Figure 1, a distributed unit (DU) of an open wireless access network checks whether phase offset compensation is required (110), where the distributed unit may be a digital unit (DU).

[0021] In operation 110, the distribution unit checks whether offset compensation is required in the section type 3 channel.

[0022] In operation 110, the distribution unit checks whether compensation for phase offsets by upconversion is required and whether compensation for offsets occurring during signal processing of frequency shifts is required.

[0023] In one embodiment, the distributed unit generates 120 a message including information related to compensation for the phase offset based on the confirmation of the operation 110. Here, the information related to compensation for the phase offset may be information indicating whether compensation for the phase offset is required.

[0024] In operation 120, if compensation for phase offset by up-conversion is required, the distributed unit may indicate in one bit 212, 312 in the message whether compensation for phase offset by up-conversion is required.

[0025] In operation 120, if compensation for offsets occurring during signal processing of frequency shifts is required, the distributed unit may indicate in one bit 214, 314 in the message whether compensation for offsets occurring during signal processing of frequency shifts is required.

[0026] More specifically, in operation 120, the distributed unit may generate and allocate information related to the compensation of the phase offset to a reserved area 210 of a section extension field 200 of the C-plane message.

[0027] 2a and 2b are diagrams showing an example of displaying information related to phase offset compensation through a reserved area in the session extension field of a C-plane message according to one embodiment, and a diagram showing an example of displaying channel filter information using numPrbc through a reserved area included in the filter index element of section type 3 of a C-plane message.

[0028] Referring to Figures 2a and 2b, the distributed unit may indicate information (phaseCompU) 212 indicating whether compensation for phase offset by the up-conversion method is required in one bit in the reserved area 210 of the session extension field 200 of the C-plane message, and may indicate information (phaseCompF) 214 indicating whether compensation for offset generated during frequency shift signal processing is required in one bit.

[0029] phaseCompU212 has a value of "1" or "0". For example, when the value of phaseCompU212 is "1", it is information indicating that compensation for phase offset using the up-conversion method is necessary, and when the value of phaseCompU212 is "0", it may be information indicating that compensation for phase offset using the up-conversion method is not necessary.

[0030] phaseCompF214 has a value of "1" or "0". For example, when the value of phaseCompF214 is "1", it is information indicating that compensation for the phase offset that occurs during signal processing of the frequency shift is necessary, and when the value of phaseCompF214 is "0", it may be information indicating that compensation for the phase offset that occurs during signal processing of the frequency shift is not necessary.

[0031] phaseCompU212 is assigned to bit 7 of bits 0 to 7 of the reserved area 210, but is not limited to this and may be assigned to any one of bits 0 to 7 of the reserved area 210.

[0032] phaseCompF214 is assigned to bit 6 of bits 0 to 7 of the reserved area 210, but is not limited to this and may be assigned to any one of bits 0 to 7 of the reserved area 210.

[0033] However, the phaseCompU 212 and the phaseCompF 214 are not assigned to the same bits among bits 0 to 7 assigned to the reserved area 210.

[0034] The distributed unit may add a filter using numPrbc to the reserved field 410 included in the filter index element (filterIndex IE) 400 of section type 3 of the C-plane message, and display the filter passband information according to numPrbc.

[0035] For example, the filter information 212 utilizing numPrbc is assigned to a filter index value of 1000b among the values ​​1111b in the reserved area 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved area 410.

[0036] Referring again to FIG. 1, in operation 120, the distributed unit can generate and allocate information related to phase offset compensation to a reserved area 310 in the section type 3 field 300 of the C-plane message.

[0037] 3a and 3b are diagrams showing an example of displaying information related to phase offset compensation through a reserved area in a section type 3 field of a C-plane message according to one embodiment, and are diagrams showing an example of displaying channel filter information using numPrbc through a reserved area included in a filter index element of section type 3 of a C-plane message.

[0038] Referring to Figures 3a and 3b, the distributed unit may indicate information (phaseCompU) 312 indicating whether compensation for phase offset by the up-conversion method is required in one bit in the reserved area 310 in the section type 3 field 300 of the C-plane message, and may indicate information (phaseCompF) 314 indicating whether compensation for offset generated during frequency shift signal processing is required in one bit.

[0039] phaseCompU312 has a value of "1" or "0". For example, when the value of phaseCompU312 is "1", it is information indicating that compensation for phase offset using the up-conversion method is necessary, and when the value of phaseCompU312 is "0", it may be information indicating that compensation for phase offset using the up-conversion method is not necessary.

[0040] phaseCompF314 has a value of "1" or "0". For example, when the value of phaseCompF214 is "1", it is information indicating that compensation for the phase offset that occurs during signal processing of the frequency shift is necessary, and when the value of phaseCompF314 is "0", it may be information indicating that compensation for the phase offset that occurs during signal processing of the frequency shift is not necessary.

[0041] phaseCompU312 is assigned to bit 7 of bits 0 to 7 of reserved area 310, but is not limited to this and may be assigned to any one of bits 0 to 7 of reserved area 310.

[0042] phaseCompF314 is assigned to bit 6 of bits 0 to 7 of reserved area 310, but is not limited to this and may be assigned to any one of bits 0 to 7 of reserved area 310.

[0043] However, phaseCompU 312 and phaseCompF 314 are not assigned to the same bits among bits 0 to 7 assigned to the reserved area 310.

[0044] The distributed unit may add a filter using numPrbc to the reserved field 410 included in the filter index element (filterIndex IE) 400 of section type 3 of the C-plane message, and display the filter passband information according to numPrbc.

[0045] For example, the filter information 312 utilizing numPrbc is assigned to a filter index value of 1000b among the values ​​1000b to 1111b assigned to the reserved area 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved area 410.

[0046] Referring again to FIG. 1, in operation 120, the distribution unit can generate and allocate information related to phase offset compensation to a reserved area 410 included in the filter index element (filterIndex IE) 400 of section type 3 of the C-plane message.

[0047] FIG. 4 is a diagram illustrating the format of a filter index element in section type 3 of a C-plane message according to one embodiment.

[0048] FIG. 5a is a diagram illustrating an example of displaying information related to phase offset compensation via a reserved field included in a filter index element of section type 3 of a C-plane message according to one embodiment.

[0049] Figures 5b and 5c are diagrams showing examples of displaying channel information that is not included in existing filter index elements but can utilize section type 3 via a reserved field included in a filter index element of section type 3 of a C-plane message according to one embodiment.

[0050] Referring to Figures 4 and 5a, the distributed unit may display information 412 indicating whether compensation for phase offset due to the up-conversion method is necessary using a preset filter index value in a reserved field 410 included in the filter index element (filterIndex IE) 400 of section type 3 of the C-plane message, and may display information 414 indicating whether compensation for offset generated during frequency shift signal processing is necessary using a preset filter index value.

[0051] For example, information 412 indicating whether phase offset compensation by the upconversion method is required is assigned to a filter index value of 1000b among the values ​​1000b to 1111b assigned to the reserved area 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved area 410.

[0052] Furthermore, information 414 indicating whether compensation for an offset occurring during frequency shift signal processing is necessary is assigned to the filter index value of 1010b among the values ​​of 1000b to 1111b assigned to the reserved area 410, but is not limited to this and may be assigned to any one of the values ​​of 1000b to 1111b assigned to the reserved area 410.

[0053] However, the information 412 and the information 414 are not assigned the same value among the values ​​1000b to 1111b assigned to the reserved area 410.

[0054] Referring to Figures 4 and 5b, the distributed unit can add channels that are not included in existing filter index elements but can utilize section type 3 to the reserved field 410 included in the filter index element (filterIndex IE) 400 of section type 3 of the C-plane message.

[0055] For example, the filter information 422 for the PDSCH / PUSCH channel is assigned to a filter index value of 1000b among the values ​​of 1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​of 1000b to 1111b assigned to the reserved region 410.

[0056] Furthermore, the filter information 424 for the SSB channel is assigned to a filter index value of 1010b among the values ​​1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved region 410.

[0057] In addition, the filter information 426 for the RIM-RS channel is assigned to a filter index value of 1011b among the values ​​1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved region 410.

[0058] In addition, filter information for other channels that can use section type 3 may be assigned one of the values ​​1000b to 1111b assigned to reserved area 410.

[0059] However, the information 422, the information 424, and the information 426 are not assigned the same value among the values ​​1000b to 1111b assigned to the reserved area 410.

[0060] Referring to Figures 4 and 5c, the distributed unit can add channels that are not included in existing filter index elements but can utilize section type 3 to the reserved field 410 included in the filter index element (filterIndex IE) 400 of section type 3 of the C-plane message.

[0061] For example, the filter information 432 for the PDSCH / PUSCH channel is assigned to a filter index value of 1000b among the values ​​of 1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​of 1000b to 1111b assigned to the reserved region 410.

[0062] Furthermore, the filter information 434 for the SSB channel is assigned to a filter index value of 1010b among the values ​​1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved region 410.

[0063] In addition, the filter information 436 for the 48RB RIM-RS channel is assigned to a filter index value of 1011b among the values ​​1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved region 410.

[0064] In addition, the filter information 438 for the 96RB RIM-RS channel is assigned to a filter index value of 1100b out of the values ​​1000b to 1111b assigned to the reserved region 410, but is not limited to this and may be assigned to any one of the values ​​1000b to 1111b assigned to the reserved region 410.

[0065] In addition, filter information for other channels that can utilize section type 3 may be assigned one of the values ​​1000b to 1111b assigned to reserved area 410.

[0066] However, the information 432, the information 434, the information 436, and the information 438 are not assigned the same value among the values ​​1000b to 1111b assigned to the reserved area 410.

[0067] Referring again to Figure 1, the distributed unit transmits the generated message to other units connected to the distributed unit (130), which may be radio units (RUs) or massive MIMO units (MMUs).

[0068] Other units that receive the message containing the information related to phase offset compensation can compensate for the phase offset by referring to the information related to phase offset compensation.

[0069] FIG. 6 illustrates an example of a distributed unit that provides whether phase offset compensation is required in an open wireless access network according to an embodiment.

[0070] 6, a distributed unit 600 of an open wireless access network includes a control unit 610, a communication unit 620, and a storage unit 630. The control unit 610 includes a phase offset check unit 612, a message generation unit 614, and a transmission processing unit 616.

[0071] The communication unit 620 is a communication interface device including a receiver and a transmitter, and can communicate with other connected units, which may be radio units (RUs) or massive MIMO units (MMUs).

[0072] The storage unit 630 stores an operating system, applications, and programs that process the operations of the present disclosure for controlling the overall operation of the distributed unit 600. The storage unit 630 may be a storage device including a flash memory, a hard disk drive, or the like.

[0073] The phase offset checker 612 checks whether phase offset compensation is required in an open wireless access network environment, and can check whether offset compensation is required in a section type 3 channel.

[0074] The phase offset checker 612 checks whether compensation for a phase offset caused by up-conversion is required in a section type 3 channel, and whether compensation for an offset occurring during signal processing of a frequency shift is required.

[0075] The message generator 614 generates a message including information related to phase offset compensation based on the confirmation by the phase offset checker 612. Here, the information related to phase offset compensation is information indicating whether phase offset compensation is necessary.

[0076] The message generator 614 may indicate in one bit 212, 312 in the message whether or not compensation for the phase offset by the up-conversion method is necessary.

[0077] The message generator 614 may indicate in the message by one bit 214, 314 whether or not compensation for an offset occurring during signal processing of a frequency shift is necessary.

[0078] The message generation unit 614 may generate information related to phase offset compensation by assigning it to at least one of the reserved area 210 in the session extension field 200 of the C-plane message, the reserved area 310 in the section type 3 field 300 of the C-plane message, and the reserved area 410 included in the filter index element (filterIndex IE) 400 of the section type 3 of the C-plane message.

[0079] The transmission processing unit 616 transmits the message generated by the message generating unit 614 to other units connected to the distributed unit.

[0080] The control unit 610 controls the overall operation of the distributed unit 600. The control unit 610 can perform the functions of the phase offset checker 612, the message generator 614, and the transmission processor 616. The control unit 610, the phase offset checker 612, the message generator 614, and the transmission processor 616 are illustrated separately to distinguish between their respective functions. Therefore, the control unit 610 may include at least one processor configured to perform each of the functions of the phase offset checker 612, the message generator 614, and the transmission processor 616. The control unit 610 may also include at least one processor configured to perform some of the functions of the phase offset checker 612, the message generator 614, and the transmission processor 616.

[0081] FIG. 7 illustrates an example of a distributed unit that provides whether phase offset compensation is required in an open wireless access network according to an embodiment.

[0082] Referring to FIG. 7, a distributed unit 700 of an open wireless access network includes a communication unit 710 and a processor 720.

[0083] The communication unit 620 is a communication interface device including a receiver and a transmitter, and can communicate with other connected units, which may be radio units (RUs) or massive MIMO units (MMUs).

[0084] The processor 720 can determine whether phase offset compensation is required in an open wireless access network environment, generate a message including relevant information for phase offset compensation based on the determination, and send the generated message to other units connected to the distributed unit.

[0085] The information related to the compensation of the phase offset according to an embodiment may be information indicating whether the compensation of the phase offset is necessary.

[0086] In one embodiment, the processor 720 determines whether compensation for a phase offset due to an up-conversion method is required in a section type 3 channel, and whether compensation for an offset occurring during signal processing of a frequency shift is required.

[0087] In one embodiment, the processor 720 may indicate in the message one bit 212, 312 whether compensation for a phase offset due to the upconversion method is required, and one bit 214, 314 whether compensation for an offset that occurs during signal processing of a frequency shift is required.

[0088] In one embodiment, the processor 720 may generate information related to phase offset compensation by assigning it to at least one of the reserved area 210 in the session extension field 200 of the C-plane message, the reserved area 310 in the section type 3 field 300 of the C-plane message, and the reserved area 410 included in the filter index element (filterIndex IE) 400 of the section type 3 of the C-plane message.

[0089] According to one embodiment, a method for compensating for a phase offset in an open wireless access network includes an operation 110 in which a distributed unit (DU) 600, 700 determines whether phase offset compensation is required, an operation 120 in which the distributed unit 600, 700 generates a message including information related to the compensation for the phase offset based on the determination, and an operation 130 in which the distributed unit 600, 700 transmits the generated message to other units connected to the distributed unit.

[0090] Here, the information related to the phase offset compensation may be information indicating whether the phase offset compensation is necessary.

[0091] According to one embodiment, the operation 110 of checking whether compensation for a phase offset is required checks whether compensation for an offset is required in a section type 3 channel in the distribution unit 600, 700.

[0092] According to one embodiment, the operation 110 of determining whether compensation for the phase offset is necessary determines whether compensation for the phase offset due to the up-conversion method is necessary and whether compensation for the offset occurring during signal processing of the frequency shift is necessary.

[0093] According to one embodiment, operation 120 of generating a message containing information related to the compensation of the phase offset based on the confirmation may indicate whether compensation of the phase offset by the up-conversion method is required or not in one bit 212, 312 of the message if compensation of the phase offset by the up-conversion method is required.

[0094] According to one embodiment, the operation 120 of generating a message including information related to the compensation of the phase offset based on the confirmation may indicate whether or not compensation of an offset occurring during signal processing of the frequency shift is required in one bit 214, 314 of the message, if compensation of an offset occurring during signal processing of the frequency shift is required.

[0095] According to one embodiment, the operation 120 of generating a message containing information related to the compensation of the phase offset based on the confirmation may indicate in the message one bit 212, 312 whether compensation for the phase offset by the up-conversion method is required, and in the message one bit 214, 314 whether compensation for the offset occurring during signal processing of the frequency shift is required.

[0096] According to one embodiment, operation 120 of generating a message including information related to the compensation of the phase offset based on the confirmation may generate the information related to the compensation of the phase offset by allocating it to a reserved area 210 of the session extension field 200 of the C-plane message.

[0097] According to one embodiment, operation 120 of generating a message including information related to the compensation of the phase offset based on the confirmation may generate the information related to the compensation of the phase offset by allocating it to a reserved area 310 in the section type 3 field 300 of the C-plane message.

[0098] According to one embodiment, the operation 120 of generating a message including information related to the compensation of the phase offset based on the confirmation may generate the information related to the compensation of the phase offset by allocating it to a reserved area 410 included in a filter index element (filterIndex IE) 400 of section type 3 of the C-plane message.

[0099] According to one embodiment, the distributed unit 600 includes a phase offset checking unit 612 that checks whether phase offset compensation is required in an open wireless access network environment, a message generating unit 614 that generates a message including information related to the phase offset compensation based on the check, and a transmission processing unit 616 that transmits the generated message to other units connected to the distributed unit.

[0100] According to one embodiment, the information related to the compensation of the phase offset may be information indicating whether the compensation of the phase offset is necessary.

[0101] According to one embodiment, the phase offset checker 612 checks whether compensation for a phase offset due to an up-conversion scheme is required in a section type 3 channel, and whether compensation for an offset occurring during signal processing of a frequency shift is required.

[0102] According to one embodiment, the message generator 614 may indicate in the message one bit 212, 312 whether compensation for a phase offset due to the up-conversion method is necessary, and may indicate in the message one bit 214, 314 whether compensation for an offset generated during signal processing of a frequency shift is necessary.

[0103] According to one embodiment, the message generation unit 614 may generate the phase offset compensation related information by allocating it to at least one of the reserved area 210 of the session extension field 200 of the C-plane message, the reserved area 310 in the section type 3 field 300 of the C-plane message, and the reserved area 410 included in the filter index element (filterIndex IE) 400 of the section type 3 of the C-plane message.

[0104] According to one embodiment, a distributed unit for compensating for a phase offset in an open wireless access network includes a communication unit 710 and a processor 720, and the processor 720 may determine whether phase offset compensation is required in an open wireless access network environment, generate a message including information related to the phase offset compensation based on the determination, and transmit the generated message to other units connected to the distributed unit.

[0105] According to one embodiment, the information related to the compensation of the phase offset may be information indicating whether the compensation of the phase offset is necessary.

[0106] According to one embodiment, the processor 720 determines whether compensation for a phase offset due to an up-conversion scheme is required in a section type 3 channel, and whether compensation for an offset occurring during signal processing of a frequency shift is required.

[0107] According to one embodiment, the processor 720 may indicate in the message one bit 212, 312 whether compensation for a phase offset due to the upconversion method is required, and may indicate in the message one bit 214, 314 whether compensation for an offset occurring during signal processing of a frequency shift is required.

[0108] According to one embodiment, the processor 720 may generate the phase offset compensation related information by allocating it to at least one of the reserved area 210 in the session extension field 200 of the C-plane message, the reserved area 310 in the section type 3 field 300 of the C-plane message, and the reserved area 410 included in the filter index element (filterIndex IE) 400 of the section type 3 of the C-plane message.

[0109] The methods according to the present invention may be embodied in the form of program instructions executed by various computer means and stored on a computer-readable storage medium. The storage medium may include program instructions, data files, data structures, and the like, alone or in combination. The storage medium and program instructions may be specially designed and constructed for the purposes of the present invention, or may be well-known and available to those skilled in the art of computer software. Examples of computer-readable storage media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions include not only machine code, such as generated by a compiler, but also high-level language code executed by a computer using an interpreter, for example. The hardware devices described above may be configured to operate as one or more software modules to perform the operations described in the present invention, or vice versa.

[0110] Software includes computer programs, codes, instructions, or a combination of one or more thereof, which can configure a processing device to operate as desired or can independently or in combination instruct the processing device. The software and / or data can be permanently or temporarily embodied in any type of machine, component, physical device, virtual device, computer storage medium or device, or transmitted signal wave to be interpreted by the processing device or to provide instructions or data to the processing device. The software can be distributed across computer systems coupled to a network and stored and executed in a distributed manner. The software and data can be stored on one or more computer-readable recording media.

[0111] Although the embodiments have been described above with reference to limited drawings, those skilled in the art may apply various technical modifications and variations based on the above description. For example, the described techniques may be performed in a different order than described, and / or the components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different manner than described, and may be replaced or substituted with other components or equivalents, while still achieving suitable results.

[0112] Accordingly, other implementations, other embodiments, and equivalents of the claims are intended to be within the scope of the following claims. [Explanation of symbols]

[0113] 600 Distributed Units 610 Control Unit 612 Phase offset check unit 614 Message Generation Unit 616 Transmission processing unit 620 Communications Department 630 Storage Unit 700 Distributed Unit 710 Communications Department 720 processor

Claims

1. A method for phase offset compensation in an open wireless access network, comprising: an operation 110 of checking whether a phase offset needs to be compensated in the distributed unit (DU) 600, 700; an operation 120 of generating a message containing information related to the compensation of the phase offset based on the confirmation in the distribution unit 600, 700; an operation 130 of transmitting the generated message in the distributed unit 600, 700 to other units connected to the distributed unit; A phase offset compensation method comprising:

2. 2. The method for compensating for a phase offset according to claim 1, wherein the information related to the compensation for the phase offset is information indicating whether the compensation for the phase offset is necessary.

3. 3. The phase offset compensation method according to claim 1, wherein the operation 110 of checking whether phase offset compensation is required checks whether offset compensation is required in a section type 3 channel in the distribution unit 600, 700.

4. The phase offset compensation method according to any one of claims 1 to 3, wherein the operation 110 of checking whether compensation for the phase offset is necessary checks whether compensation for a phase offset due to an up-conversion method is necessary and whether compensation for an offset generated during signal processing of a frequency shift is necessary.

5. The phase offset compensation method according to any one of claims 1 to 4, wherein, in operation 120, a message including information related to the compensation of the phase offset based on the confirmation is generated, if compensation of the phase offset by an up-conversion method is required, one bit 212, 312 in the message indicates whether compensation of the phase offset by the up-conversion method is required.

6. The phase offset compensation method according to any one of claims 1 to 5, wherein, in operation 120, a message including information related to the compensation of the phase offset is generated based on the confirmation, if compensation for an offset occurring during signal processing of the frequency shift is required, one bit 214, 314 of the message indicates whether compensation for an offset occurring during signal processing of the frequency shift is required.

7. The operation 120 of generating a message containing information related to the compensation of the phase offset based on the confirmation comprises: Indicating in the message by one bit 212, 312 whether compensation for phase offset by up-conversion is required; 7. The method for compensating for a phase offset according to claim 1, wherein one bit (214, 314) in the message indicates whether or not compensation for an offset occurring during signal processing of a frequency shift is necessary.

8. The phase offset compensation method according to any one of claims 1 to 7, wherein the operation 120 of generating a message including information related to the compensation of the phase offset based on the confirmation generates the information related to the compensation of the phase offset by allocating it to a reserved area 210 of a session extension field 200 of a C-plane message.

9. The phase offset compensation method according to any one of claims 1 to 8, wherein the operation 120 of generating a message including information related to the compensation of the phase offset based on the confirmation generates the information related to the compensation of the phase offset by allocating it to a reserved area 310 in a section type 3 field 300 of the C-plane message.

10. The method for phase offset compensation according to any one of claims 1 to 9, wherein the operation 120 of generating a message including information related to the phase offset compensation based on the confirmation generates the information related to the phase offset compensation by allocating it to a reserved area 410 included in a filter index element (filterIndex IE) 400 of section type 3 of a C-plane message.

11. a phase offset check unit 612 for checking whether phase offset compensation is required in an open radio access network environment; a message generator 614 for generating a message including information related to the compensation of the phase offset based on the confirmation; a transmission processing unit 616 for transmitting the generated message to other units connected to the distributed unit; A distribution unit 600 including:

12. The distribution unit 600 according to claim 11, wherein the information related to the compensation of the phase offset is information indicating whether the compensation of the phase offset is necessary.

13. The distributed unit 600 of any one of claims 11 to 12, wherein the phase offset checker 612 checks whether compensation for a phase offset due to an up-conversion method is required in a section type 3 channel, and whether compensation for an offset generated during signal processing of a frequency shift is required.

14. The message generation unit 614 Indicating in the message by one bit 212, 312 whether compensation for phase offset by up-conversion is required; The distribution unit (600) according to any one of claims 11 to 13, wherein one bit (214, 314) in the message indicates whether or not compensation for an offset occurring during signal processing of a frequency shift is required.

15. The message generation unit 614 The information related to the phase offset compensation is stored in the reserved area 210 of the session extension field 200 of the C-plane message, The information related to the phase offset compensation is stored in a reserved area 310 in the section type 3 field 300 of the C-plane message; A reserved area 410 containing information related to the phase offset compensation in a filter index element (filterIndex IE) 400 of section type 3 of the C-plane message; The distribution unit 600 according to any one of claims 11 to 14, wherein the distribution unit 600 generates the first and second signals by allocating the first and second signals to at least one of the first and second signals.

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