Patent Grant
11778600
This is a National Stage Application, filed under U.S.C. 371, of International Application No. PCT/CN2019/074853 filed on Feb. 12, 2019, which claims priority to Chinese patent application No. 201810147407.5 filed on Feb. 12, 2018, disclosure of which i& are incorporated herein by reference in their entirety.
The present disclosure relates to the field of wireless communication technology, for example, to a resource allocation method and device.
Machine Type Communications (MTC), also referred to as Machine to Machine (M2M) Communications, is the primary application mode of the Internet of Things in the current stage. Currently, MTC devices deployed on the market are mainly based on the Global System of Mobile communication (GSM). In recent years, more and more mobile operators choose Long Term Evolution/Advanced Long-Term Evolution (LTE/LTE-A) as the evolution direction of the future broadband wireless communication system due to the high spectral efficiency of the LTE/LTE-A. MTC multi-type data services based on LTE/LTE-A will also be more attractive.
A minimum resource allocation granularity of the resource allocation of a Physical Downlink Shared Channel (PDSCH)/Physical Uplink Shared Channel (PUSCH) of a related MTC terminal (Rel-13 (version 13) MTC terminal) is one Physical Resource Block (PRB), where one physical resource block is formed by 12 subcarriers in frequency domain. The overhead of a PUSCH resource allocation field in a coverage enhancement mode A (CE mode A) is
bits, where NRBUL is the number of uplink physical resource blocks. The overhead of the PDSCH resource allocation field is
where NRBDL is the number of downlink physical resource blocks; the overhead of the PUSCH resource allocation field in a coverage enhancement mode B (CE mode B) is
bits, and the overhead of the PDSCH resource allocation field is
Such resource allocation method can only be performed within a narrowband, and since the traditional LTE resource allocation is performed according to the resource block groups, the size of a resource block group (RBG) (the RBG includes 2 PRBs for a 3/5 MHz system bandwidth; the RBG includes 3 PRBs for a 10 MHz system bandwidth, the RBG includes 4 PRBs for a 15/20 MHz system bandwidth) and the size of a narrowband (6 PRBs) are inconsistent, causing that the edge of the narrowband may not be aligned with the RBG, some PRBs may not be allocated, and leading to resource allocation fragmentation. As shown in
At present, there is no solution for reducing the resource allocation fragmentation.
The present application provides a resource allocation method and device, which can implement a more flexible narrowband resource allocation strategy, thereby improving the resource allocation flexibility of narrowband user equipment.
The embodiment of the present disclosure provides a resource allocation method, including steps described below.
Resource position indication information is sent, where the resource position indication information carries position information of a physical resource block (PRB) resource within a narrowband and shift offset information of the PRB resource within the narrowband, or the resource position indication information carries position information of a PRB resource within the narrowband and position information of a PRB resource out of the narrowband.
The embodiment of the present disclosure provides a resource allocation device, including an information sending module and a resource allocation module.
The information sending module is configured to send resource position indication information, wherein the resource position indication information carries position information of a physical resource block (PRB) resource within a narrowband and shift offset information of the PRB resource within the narrowband, or the resource position indication information carries position information of a PRB resource out of the narrowband and the position information of the PRB resource within the narrowband.
The resource allocation module is configured to determine a position of an actually allocated resource according to the position information of the PRB resource within the narrowband carried in the resource position indication information and the shift offset information of the PRB resource within the narrowband carried in the resource position indication information; or determine a position of an actually allocated resource according to position information of the PRB resource within the narrowband and the position information of the PRB resource out of the narrowband carried in the resource position indication information.
The embodiment of the present disclosure provides a resource allocation device, which includes: a memory, a processor and a resource allocation program stored in the memory and executable on the processor, where the resource allocation program, when executed by the processor, implements the resource allocation method described above.
The embodiment of the present application provides a computer-readable storing a resource allocation program, wherein the resource allocation program, when executed by a processor, implements the resource allocation method described above.
Embodiments of the present disclosure will be described hereinafter in detail with reference to the drawings. It is to be noted that if not in collision, the embodiments and features therein of the present disclosure may be combined with each other.
As shown in
In step S210: resource position indication information is sent, where the resource position indication information carries position information of a physical resource block (PRB) resource within a narrowband and shift offset information of the PRB resource within the narrowband, or the resource position indication information carries position information of the PRB resource within the narrowband and position information of a PRB resource out of the narrowband.
In step S220, a position of an actually allocated resource is determined according to the position information of the PRB resource within the narrowband carried in the resource position indication information and the shift offset information of the PRB resource within the narrowband carried in the resource position indication information; or the position of the actually allocated resource is determined according to the position information of the PRB resource within the narrowband and the position information of the PRB resource out of the narrowband carried in the resource position indication information.
In one implementation, the actually allocated resource includes: a resource actually allocated to a physical uplink shared channel (PUSCH) or a resource actually allocated to a physical downlink shared channel (PDSCH).
In one implementation, the step in which the resource position indication information is sent includes:
A size of the resource allocation field of the DCI format 6-0A message or the DCI format 6-1A message is
some values of least significant 5 bit in the relevant art has been used for state indication. The present embodiment utilizes another part of unused values to indicate the position information of the PRB resource within the narrowband corresponding to the actually allocated resource and the shift offset information of the PRB resource within the narrowband.
In one implementation, the step in which the resource position indication information is sent includes: in a coverage enhancement mode B, indicating a resource position of an actually allocated resource by adding one or more information bits into a resource allocation field of the resource position indication information or extending a corresponding narrowband resource allocation field in the resource allocation field of the resource position indication information.
In one implementation, the step in which the resource position indication information is sent includes:
The resource allocation field is a message field in DCI, and the resource allocation field includes a narrowband indication field and a narrowband resource allocation field.
In one implementation, the shift offset information is determined by:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes:
In one implementation, the step in which the resource position indication information is sent includes: in the coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a system bandwidth is 3 MHz or 5 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2 and PRB3, the shift offset being shifting one PRB forward; and in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2, PRB3, PRB4 and PRB5, the shift offset being shifting one PRB forward or shifting one PRB backward.
In one implementation, the step in which the resource position indication information is sent includes: in the coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a system bandwidth is 10 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2, PRB3, PRB4 and PRB5, the shift offset being shifting one PRB backward or shifting two PRBs backward.
In one implementation, the step in which the resource position indication information is sent includes: in the coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a narrowband index is 15 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2 and PRB3, the shift offset being shifting one PRB forward.
In one implementation, the step in which the resource position indication information is sent includes: in a coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a system bandwidth is 20 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2 and PRB3, the shift offset being shifting two PRBs forward.
Compared with the related technology, the present disclosure provides a resource allocation method and an device sending the resource position indication information, where the resource position indication information carries position information of the physical resource block (PRB) resource within the narrowband and shift offset information of the PRB resource within the narrowband, or the resource position indication information carries position information of the PRB resource within the narrowband and position information of a PRB resource out of the narrowband. The disclosed method and device can implement a more flexible narrowband resource allocation strategy, thereby improving the resource allocation flexibility for narrowband user equipments.
As shown in
The information sending module 301 is configured to send resource position indication information, wherein the resource position indication information carries position information of a physical resource block (PRB) resource within a narrowband and shift offset information of the PRB resource within the narrowband, or the resource position indication information carries position information of the PRB resource within the narrowband and position information of a PRB resource out of the narrowband.
The resource allocation module 302 is configured to determine a position of an actually allocated resource according to the position information of the PRB resource within the narrowband carried in the resource position indication information and the shift offset information of the PRB resource within the narrowband carried in the resource position indication information; or determine a position of an actually allocated resource according to position information of the PRB resource within the narrowband and the position information of the PRB resource out of the narrowband carried in the resource position indication information.
In one implementation, the actually allocated resource includes: a resource actually allocated to a physical uplink shared channel (PUSCH) or a resource actually allocated to a physical downlink shared channel (PDSCH).
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
A size of the resource allocation field of the DCI format 6-0A message or the DCI format 6-1A message is
some values of least significant 5 bit in the relevant art has been used for state indication. This embodiment utilizes another part of unused values to indicate the position information of the PRB resource within the narrowband corresponding to the actually allocated resource and the shift offset information of the PRB resource within the narrowband.
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
The resource allocation field is a message field in DCI, and the resource allocation field includes a narrowband indication field and a narrowband resource allocation field.
In one implementation, the shift offset information is determined by:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner:
In one implementation, the information sending module is configured to send resource position indication information in the following manner: in the coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a system bandwidth is 10 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2, PRB3, PRB4 and PRB5, the shift offset being shifting one PRB backward or shifting two PRBs backward.
In one implementation, the information sending module is configured to send resource position indication information in the following manner: in the coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a system bandwidth number is 15 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2 and PRB3, the shift offset being shifting one PRB forward.
In one implementation, the information sending module is configured to send resource position indication information in the following manner: in the coverage enhancement mode B, in a case where an actually allocated resource is a resource actually allocated to a physical downlink shared channel (PDSCH), and a system bandwidth is 20 MHz: in a case where the PRB resource within the narrowband is PRB0, PRB1, PRB2 and PRB3, the shift offset being shifting two PRBs forward.
An embodiment of the present disclosure provides a resource allocation device, including: a memory, a processor, and a resource allocation program stored in the memory and executable by the processor, where the resource allocation program, when executed by the processor, implements the resource allocation method in the embodiment 1.
An embodiment of the present disclosure provides a computer-readable storage medium storing a resource allocation program which, when executed by a processor, implements the resource allocation method according to the embodiment 1.
The resource allocation method of the present disclosure is further described below by way of examples.
This example provides a resource allocation method for flexible resource allocation of narrowband PDSCH/PUSCH in a scenario of a coverage enhancement mode A.
In the coverage enhancement mode A: a PRB resource within a narrowband corresponding to an actually allocated resource and a shift offset information of the PRB resource within the narrowband are indicated by a remaining state of resource allocation within the narrowband of least significant 5 bits in a resource allocation field in DCI format 6-0A/6-1A. A PDSCH resource position actually allocated is determined according to the PRB resource within the narrowband and the shift offset information.
The least significant 5 bits in the resource allocation field in the DCI format 6-0A/6-1A may indicate the resource allocation state of 32 narrowbands, where 21 narrowbands among the 32 narrowbands have been used.
Therefore, as shown in Table 1 below, the state of the remaining 11 narrowbands is used in this example to indicate partial PRB positions within the narrowband and the corresponding shift offset information respectively. The PDSCH/PUSCH resource position actually allocated is determined according to the indicated PRB resource within the narrowband and the shift offset information.
A corresponding relationship between the resource indication (the remaining state value corresponding to the 5-bit information bits and the shift offset as well as the PRB position within the narrowband in Table 1 is merely an example, and other corresponding relationships are not listed one by one, which are also within the protection scope of this application.
With reference to Table 1, the resource allocation method of this example is described with two remaining state values (25 and 27). As shown in
The method described in this example may provide a more flexible resource allocation mode for narrowband PDSCH/PUSCH in the coverage enhancement mode A.
This example provides a resource allocation method for flexible resource allocation of narrowband PDSCH/PUSCH in a scenario of a coverage enhancement mode A.
In the coverage enhancement mode A: position information of a PRB resource within the narrowband and position information of a PRB resource out of the narrowband corresponding to the actually allocated resource is indicated by a remaining state of resource allocation within the narrowband of least significant 5 bits in the resource allocation field in DCI format 6-0A/6-1A, and PDSCH/PUSCH resource positions actually allocated are determined jointly according to the PRB resource out of the narrowband and the PRB resource within the narrowband.
The least significant 5 bits in the resource allocation field in the DCI format 6-0A/6-1A may indicate resource allocation states of 32 narrowbands, where 21 narrowbands among the 32 narrowbands have been used.
Therefore, as shown in Table 2-1 below, the remaining 11 states are used to indicate positions of partial PRBs allocated within the narrow band and the position of PRB resource out of the narrowband respectively in this example. The PDSCH/PUSCH resource position actually allocated is determined according to the indicated PRB resource within the narrowband and the PRB resource out of the narrowband.
A corresponding relationship between the resource indication (the remaining state value corresponding to the 5 bits for information) and the PRB position out of the narrowband as well as the PRB position within the narrowband in Table 2-1 is merely an example, other corresponding relationships are not listed one by one, which are also within the protection scope of this disclosure.
With reference to Table 2-1, the resource allocation method of this example is explained with two remaining state values (25 and 27). As shown in
As shown in Table 2-2, the state of the remaining 11 narrowbands is used in this example to indicate the PRB position of the actually allocated resource respectively. The PRB position of the actually allocated resource includes a position of the PRB resource within the narrowband and a position of the PRB resource out of the narrowband, where the position of the PRB resource out of the narrowband is represented in the following manners: representing a position of the PRB resource of a preceding narrowband relative to a current narrowband by using a negative number and representing a position of the PRB resource of a subsequent narrowband relative to a current narrowband by using an integer greater than 5. As an example, as described with reference to Table 2-1, a narrowband with a narrowband index 2 corresponds to the current narrowband, a narrowband with a narrowband index 1 corresponds to the preceding narrowband relative to the current narrowband, and a narrowband with a narrowband index 3 corresponds to the subsequent narrowband relative to the current narrowband. The position of the actually allocated PDSCH/PUSCH resource is determined according to the position of the indicated allocated PRB.
A corresponding relationship between the resource indication (the remaining state value of the 5 bits for information) and the position of the allocated PRB as shown in Table 2-2 is merely an example, and other corresponding relationships are not listed one by one, which are also within the protection scope of this application. The PRB position with a negative number in the table represents a PRB within a preceding narrowband corresponding to a current narrowband. The PRB position with a number greater than 5 represents a PRB within a subsequent narrowband corresponding to the current narrowband.
With reference to Table 2-2, the resource allocation method of this example is described with two remaining state values (25 and 27). As shown in 4(a), the value of the least significant 5 bits in the resource allocation field in the DCI format 6-0A/6-1A is 25, and the corresponding allocated PRB resources are PRB-1, PRB0, PRB1 and PRB2. In a case where the narrowband index is 2 (referring to the current narrowband), the actually allocated DSCH/PUSCH resource is determined according to the indicated allocated PRB position. The allocated PRB position corresponding to PRB-1 represents PRB5 within the narrowband with index 1; the allocated PRB positions PRB0, PRB1 and PRB2 represent PRB0, PRB1 and PRB2 within the narrowband with index 2, and thereby, the actually allocated resources are PRB12, PRB13, PRB14 and PRB15. As shown in
This example provides a resource allocation method for flexible resource allocation of narrowband PUSCH in a scenario of coverage enhancement mode B.
In the coverage enhancement mode B, 3-bit information bits for indicating a resource allocation state within the narrowband in a resource allocation field in DCI format 6-0B are extended into 4 bits, thereby flexibility in indicating narrowband PUSCH resource allocation state is achieved. As shown in Table 3 below:
A corresponding relationship between the resource indication (4-bit information bits) and the shift offset information as well as the PRB position within the narrowband in Table 3 is merely an example, other corresponding relationships are not listed one by one, which are also within the protection scope of this application.
The method described in this example may provide a more flexible resource allocation mode for narrowband PUSCH in the coverage enhancement mode B.
This example provides a resource allocation method for flexible resource allocation of narrowband PUSCH in a coverage enhancement mode B scenario.
In the coverage enhancement mode B, 3-bit information bits for indicating a resource allocation state within the narrowband in a resource allocation field in DCI format 6-0B are extended into 4 bits, thereby flexibility in indicating narrowband PUSCH resource allocation state is achieved. As shown in Table 4 below:
A corresponding relationship between the resource indication (4-bit information bits) and the PRB position in Table 4 is merely an example, other corresponding relationships are not listed one by one, which are also within the protection scope of this application. A PRB position in the table with a negative number represents a PRB within a preceding narrowband relative to a current narrowband. The PRB position with a number greater than 5 represents a PRB within a subsequent narrowband relative to the current narrowband.
The method described in this example may provide a more flexible resource allocation mode for narrowband PDSCH in the coverage enhancement mode B.
This example provides a resource allocation method for flexible resource allocation of narrowband PDSCH in a coverage enhancement mode B scenario.
In the coverage enhancement mode B, 1 information bit for indicating a resource allocation state within the narrowband in a resource allocation field in DCI format 6-1B is extended into 3 bits, thereby flexibility in indicating narrowband PDSCH resource allocation state is achieved. As shown in Table 5 below:
A corresponding relationship between the resource indication (3-bit information bits) and the shift offset information as well as the PRB position within the narrowband in Table 5 is merely an example, other corresponding relationships are not listed one by one, which are also within the protection scope of this application.
The method described in this example may provide a more flexible resource allocation mode for narrowband PDSCH in the coverage enhancement mode B.
This example provides a resource allocation method for flexible resource allocation of narrowband PDSCH in a coverage enhancement mode B scenario.
In the coverage enhancement mode B, 1 information bit for indicating a resource allocation state within the narrowband in a resource allocation field in DCI format 6-1B is extended into 3 bits, thereby flexibility in indicating narrowband PDSCH resource allocation state is achieved. As shown in Table 6 below:
The PRB position in table is a negative number in Table six, which represents the PRB within a preceding narrowband corresponding to the narrowband. The PRB position greater than 5 represents the PRB within a subsequent narrowband corresponding to the narrowband.
The method described in this example may provide a more flexible resource allocation mode for narrowband PDSCH in the coverage enhancement mode B.
This example provides a resource allocation method for flexible resource allocation of narrowband PDSCH in a coverage enhancement mode B scenario.
In the coverage enhancement mode B, 1 information bit for indicating a resource allocation state within the narrowband in a resource allocation field in DCI format 6-1B is extended into 2 bits, thereby flexibility in indicating narrowband PDSCH resource allocation state is achieved. As shown in Table 7 below:
A corresponding relationship between the resource indication (2-bit information bits) and the shift offset information as well as the PRB position within the narrowband in Table 7 is merely an example, other corresponding relationships are not listed one by one, which are also within the protection scope of this application.
The method described in this example may provide a more flexible resource allocation mode for narrowband PDSCH in the coverage enhancement mode B.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810147407.5 | Feb 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2019/074853 | 2/12/2019 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2019/154427 | 8/15/2019 | WO | A |
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| 106961734 | Jul 2017 | CN |
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| Number | Date | Country | |
|---|---|---|---|
| 20210219290 A1 | Jul 2021 | US |
