CN108270531B

CN108270531B - Resource allocation method, user equipment and base station

Info

Publication number: CN108270531B
Application number: CN201611261071.2A
Authority: CN
Inventors: 唐浩; 周国华; 唐臻飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2020-10-23
Anticipated expiration: 2036-12-30
Also published as: CN108270531A

Abstract

The embodiment of the invention relates to a resource allocation method, user equipment and a base station, wherein the method provided by the embodiment comprises the following steps: the user equipment determines at least one first time-frequency resource block set and at least one reference value; the user equipment determines at least one second time-frequency resource block set according to at least one first time-frequency resource block set and at least one reference value, wherein the second time-frequency resource block set is not completely overlapped with the corresponding first time-frequency resource block set in the frequency domain position; and the user equipment uses the time frequency resource blocks in the at least one second time frequency resource block set for data transmission. The method provided by the embodiment of the invention can jointly deploy the carriers of different systems on the same frequency spectrum resource, thereby reducing or avoiding the interference between the carriers of the two systems.

Description

Resource allocation method, user equipment and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a resource allocation method, a user equipment, and a base station.

Background

In the deployment process of a wireless communication system, each carrier is generally deployed in a Frequency Division Multiplexing (FDM) manner, a guard interval is left between each carrier, and this rule is generally applicable to carrier deployment between the same systems or between different systems.

The above conventional deployment method requires that the width of the carrier is matched to the width of the available spectrum, and the width of the carrier is generally fixed on a standard. Generally, the bandwidth of a Long Term Evolution (LTE) system is fixed. When the frequency spectrum is irregular, the waste of frequency spectrum resource deployment is easy to occur. To solve this problem, the width of the carrier may be defined as a variable bandwidth, for example, the carrier may flexibly set the width between 3M and 10M, and the variable granularity may be the granularity of one Physical Resource Block (PRB) or the granularity of one subcarrier, etc.

The above method undoubtedly increases the complexity of the processing of the base station and the terminal device, and as long as one of the adjacent systems does not support the flexible bandwidth, the whole scheme cannot be used. The new solution idea is to allow the carriers to be directly overlapped, and through the processing in the overlapping area, the two carriers can share the frequency spectrum on the overlapped frequency spectrum, and flexibly concurrence respective signals, thereby achieving the purposes of reusing the frequency spectrum and flexibly deploying the carriers. However, when two carriers are partially overlapped or completely overlapped, because the PRB numbering rules of the two carriers are different, the PRBs of the two carriers cannot be aligned in the frequency domain, and an interference problem is caused.

The LTE supports 6 system bandwidths, which are 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, or 20MHz, the number of PRBs included corresponds to 6 PRBs, 15 PRBs, 25 PRBs, 50 PRBs, 75 PRBs, or 100 PRBs, and each PRB includes 12 subcarriers. An unused subcarrier, called a Direct Current (DC) subcarrier, is located at the center of the LTE downlink carrier, and is set to avoid high interference caused by possible leakage of a local crystal oscillator and other reasons. And skipping the DC subcarrier for numbering when PRBs are numbered.

In one possible example, when the LTE system bandwidth includes an even number of PRBs (6, 50, 100), all PRBs include 12 subcarriers that are contiguous in the frequency domain, but one DC subcarrier is reserved between two PRBs in the center of the band. When the LTE system bandwidth is an odd number of PRBs (15, 25, 75), 12 subcarriers included in the PRB in the center of the band are discontinuous, and are 6 subcarriers at the top of the band and 6 subcarriers at the bottom of the band adjacent to the DC subcarrier. Taking an LTE system bandwidth of 15 PRBs as an example, as shown in fig. 1a, fig. 1a is a schematic diagram of a distribution of PRBs when the LTE system bandwidth is 3MHz, and a frequency band center includes a PRB7 and one DC subcarrier, which is 13 subcarriers in total. Therefore, the effective bandwidth of the LTE system for the 3MHz band is: (12 +1 number of PRBs comprised by the system bandwidth) subcarriers.

In one possible example, NR systems support a variety of flexible bandwidths, NR does not reserve a DC subcarrier, and PRBs may contain a DC subcarrier. Fig. 1b is a schematic diagram of PRB distribution when the NR carrier bandwidth is 3MHZ, and as shown in fig. 1b, when the NR system bandwidth is 15 PRBs, a PRB in the center of the band (i.e., PRB7) includes 12 consecutive subcarriers, including a DC subcarrier. The effective bandwidth of the NR system for the 3MHz band is therefore: (12 × number of PRBs included in the system bandwidth) subcarriers.

Because the LTE carrier and the NR carrier have different processing modes for the DC subcarrier, when the LTE carrier and the NR carrier coexist in the same spectrum, the PRB frequency domains may not be aligned. Fig. 1c is a schematic diagram of PRB frequency domain misalignment when NR and LTE carriers coexist, as shown in fig. 1c, the LTE and NR carriers coexist on a 3MHz spectrum, and starting subcarriers of PRBs 0 of the two carriers are aligned, where PRBs 0 to PRB6 of the LTE and NR carriers are completely aligned, PRB7 is not aligned, and PRB8 to PRB14 are not aligned, because frequency domain positions of the starting subcarriers of PRB8 in the LTE carrier and PRB8 in the NR carrier are separated by a distance of one subcarrier, resulting in a misalignment of one subcarrier from PRB9 to PRB 14.

Thus, the PRBs 8 through PRB14 in both the LTE and NR carriers are not aligned, with the starting subcarriers of the PRBs separated by one subcarrier. Misalignment of the PRB frequency domain locations in the two carriers can cause interference problems. In one possible example, where the LTE carrier allocates PRB8 to one user equipment and the NR carrier allocates PRB9 to another user equipment, since PRB8 in the LTE carrier and PRB9 in the NR carrier overlap in the frequency domain with the position of one subcarrier, there may be mutual interference on this overlapping subcarrier.

In summary, when the LTE carrier and the NR carrier are deployed in the same spectrum resource, the PRB frequency domain positions in the two carriers are not aligned, which may cause the inter-carrier interference problem.

Disclosure of Invention

The embodiment of the invention provides a resource allocation method, user equipment and a base station, which can solve the problem of inter-carrier interference caused by the misalignment of PRB frequency domain positions in two carriers when an LTE carrier and an NR carrier are jointly deployed in the same spectrum resource.

In a first aspect, an embodiment of the present invention provides a resource allocation method, where the method includes: the user equipment determines at least one first time-frequency resource block set and at least one reference value; the user equipment determines at least one second time-frequency resource block set according to at least one first time-frequency resource block set and at least one reference value, wherein the second time-frequency resource block set is not completely overlapped with the corresponding first time-frequency resource block set in the frequency domain position; and the user equipment uses the time frequency resource blocks in the at least one second time frequency resource block set for data transmission.

The at least one first time-frequency resource block set corresponds to the at least one reference value one by one, and the at least one second time-frequency resource block set corresponds to the at least one first time-frequency resource block set one by one.

In one possible implementation, the at least one first set of time-frequency resource blocks belongs to resources of an NR system, the at least one first set of time-frequency resource blocks and the at least one reference value information are determined according to resources of an LTE system, and a PRB included in the at least one second set of time-frequency resource blocks is aligned with a PRB included in the LTE system in a frequency domain, where the alignment refers to that the PRB included in the at least one second set of time-frequency resource blocks is not offset from the PRB included in the LTE system by a subcarrier.

In one example, each PRB of the LTE system or the NR system includes 12 subcarriers, and the alignment of the PRBs of the two systems in the frequency domain refers to that one PRB of one system corresponds to only one PRB of the other system in the two systems, and there is no case that one PRB of one system corresponds to two PRBs of the other system. More specifically, as can be seen in FIG. 1c, the PRBs 0-PRBs 6 of the LTE system are aligned with the PRBs 0-PRBs 6 of the NR system. However, the PRB8-PRB14 of the LTE system is not aligned with the PRB8-PRB14 of the NR system, such as 12 sub-carriers included in the PRB8 of the NR system corresponding to 1 sub-carrier included in the PRB7 of the LTE system and 11 sub-carriers included in the PRB 8. That is, the PRB8 of the NR system corresponds to the PRB7 and the PRB8 of the LTE system, one PRB of the NR system corresponds to two PRBs of the LTE system, and the PRB8-PRB14 of the LTE system and the PRB8-PRB14 of the NR system have subcarrier misalignment.

In one possible implementation, the at least one first set of time-frequency resource blocks belongs to resources of an NR system, the at least one first set of time-frequency resource blocks and the at least one reference value information are determined according to resources of an LTE system, the PRB included in the at least one second set of time-frequency resource blocks does not have interference in a frequency domain with the PRB included in the LTE system, and the absence of interference in the frequency domain means that a subcarrier included in one PRB in the at least one second set of time-frequency resource blocks corresponds to a subcarrier included in only one PRB in the LTE system.

In one example, referring to fig. 1c, PRBs 8-PRB14 of the NR system may be set as the first time-frequency resource of the NR system. In the NR system, the sub-carrier with the lowest frequency index of the PRB8 is interfered by the PRB7 of the LTE system, so that 11 sub-carriers except for the lowest frequency index are selected as the new PRB8 in the NR system, and the new PRB8 of the NR system corresponds to only the PRB8 of the LTE system, and is not interfered by the PRB7 of the LTE system. Correspondingly, aiming at the PRB9-PRB14 of the NR system, a new PRB9-PRB14 is obtained in the same way, and the new PRB8-PRB14 in the NR system forms a second time-frequency resource. The subcarrier included by one PRB in the second time-frequency resource of the NR system only corresponds to the subcarrier included by one PRB in the LTE system, so that the PRB included in the second time-frequency resource of the NR system does not interfere with the PRB included in the LTE system in the frequency domain.

In particular, the at least one first set of time-frequency resource blocks may belong to resources of an NR system. At least one second time-frequency resource block set obtained through the resource configuration information can be aligned with PRBs of the LTE system or has no interference, so that the LTE carrier and the NR carrier can be jointly deployed on the same spectrum resource.

In one possible implementation, the ith first set of time-frequency resource blocks includes N_iThe reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer; the user equipment determines at least one second time-frequency resource block set according to the at least one first time-frequency resource block set and the at least one reference value, and the method comprises the following steps: user equipment according to M_iPositive and negative of (2)_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iAnd obtaining a second time-frequency resource block set corresponding to the ith first time-frequency resource block set by | sub-carriers.

Specifically, the second set of time-frequency resource blocks may be aligned with PRBs of the LTE system by means of frequency domain shifting.

In one possible implementation, the ith first set of time-frequency resource blocks includes N_iA first PRB, the first PRB comprises K continuous subcarriers, and the reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, K is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer; the user equipment determines at least one second time-frequency resource block set according to the at least one first time-frequency resource block set and the at least one reference value, and the method comprises the following steps: user equipment according to N_iA first PRB and M_iDetermining N included in a second time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA second PRB; wherein each second PRB comprises K- | M_iThe frequency domain position relation of the subcarriers included by the second PRB and the subcarriers included by the first PRB is according to M_iPositive and negative of (2) are determined.

In one possible implementation, according to M_iDetermining that the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is one of the following: the lowest frequency-domain-index subcarrier included by the second PRB is aligned with the lowest frequency-domain-index subcarrier included by the first PRB, or the lowest frequency-domain-index subcarrier included by the second PRB is aligned with the highest frequency-domain-index subcarrier included by the first PRB.

In one possible implementation, the method further comprises: user equipment according to N_iA first PRB and M_iDetermining N included in a third time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA third PRB; wherein the third PRB includes | M_iL consecutive subcarriers, according to M_iDetermining that the frequency-domain position relationship between the subcarriers included in the third PRB and the subcarriers included in the first PRB is one of the following: the lowest frequency-domain indexed subcarrier included by the third PRB is aligned with the lowest frequency-domain indexed subcarrier included by the first PRB, or the lowest frequency-domain indexed subcarrier included by the third PRB is aligned with the highest frequency-domain index included by the first PRBAligning the introduced subcarriers; the user equipment determines at least one third time-frequency resource block set corresponding to the at least one first time-frequency resource block set; and the user equipment does not carry out data transmission on the time frequency resource blocks in the at least one third time frequency resource block set.

Specifically, the data transmission mode of the subcarriers in the aligned PRBs can be extracted by performing data transmission on the subcarriers without interference, so that the PRBs included in the second time-frequency resource block set of the NR system do not interfere with the PRBs included in the LTE system.

In one possible implementation, the user equipment determines at least one first set of time-frequency resource blocks and at least one reference value according to pre-configuration information sent by the base station; or, the user equipment determines at least one first time-frequency resource block set and at least one reference value according to fourth time-frequency resource information sent by the base station.

In one possible implementation, the fourth time-frequency resource is a resource of a long term evolution LTE system, and the first time-frequency resource is a resource of a new access technology NR system.

In one possible implementation, when the user equipment is according to the M_iPositive and negative of (2) will be N_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iWhen a second time-frequency resource block set corresponding to the ith first time-frequency resource block set is obtained, | subcarrier, PRBs in the second time-frequency resource block set are aligned with PRBs of the LTE system in the frequency domain position; or N when the second time frequency resource block set comprises_iA plurality of second PRBs, each second PRB including K-M_iWhen there are | consecutive subcarriers, there is no interference between the second PRB in the second set of time-frequency resource blocks and the PRB of the LTE system in the frequency domain.

In one possible implementation, the method further comprises: the user equipment receives at least one piece of first time-frequency resource block set information and at least one reference value sent by a base station in at least one odd time slot or even time slot; or, the user equipment receives at least one first time-frequency resource block set information and at least one reference value sent by the base station through high-layer signaling.

In one possible implementation, the method further comprises: the user equipment receives at least one piece of first time-frequency resource block set information and at least one reference value which are sent by the base station through common control information or a common channel.

In a second aspect, an embodiment of the present invention provides a resource allocation method, where the method includes: the base station determines at least one first time-frequency resource block set and at least one reference value; the base station transmits at least one first set of time-frequency resource blocks and at least one reference value to the user equipment.

Specifically, at least one first set of time-frequency resource blocks corresponds to at least one reference value one to one.

The base station sends at least one first time-frequency resource block set and at least one reference value to the user equipment so that the user equipment can determine at least one second time-frequency resource block set according to the at least one first time-frequency resource block set and the at least one reference value, wherein the at least one second time-frequency resource block set corresponds to the at least one first time-frequency resource block set one by one, and the second time-frequency resource block set is not completely overlapped with the corresponding first time-frequency resource block set in the frequency domain position; and enabling the user equipment to use the time frequency resource blocks in the at least one second time frequency resource block set for data transmission.

In one possible implementation, the method further comprises: and the base station carries out data transmission with the user equipment in the time frequency resource blocks in the at least one second time frequency resource block set.

In one possible implementation, the base station determines at least one first set of time-frequency resource blocks and at least one reference value according to the pre-configuration information; or, the base station determines at least one first time-frequency resource block set and at least one reference value according to the fourth time-frequency resource information; the fourth time-frequency resource is a resource of a Long Term Evolution (LTE) system, and the first time-frequency resource is a resource of a new access technology (NR) system.

In a third aspect, an embodiment of the present invention provides a user equipment, where the user equipment includes: a determining unit, configured to determine at least one first set of time-frequency resource blocks and at least one reference value; the determining unit is further configured to determine at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value, where the second set of time-frequency resource blocks and the corresponding first set of time-frequency resource blocks do not completely overlap in the frequency domain; and the transmission unit is used for transmitting data by using the time frequency resource blocks in the at least one second time frequency resource block set.

In one possible implementation, the ith first set of time-frequency resource blocks includes N_iThe reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer; a determination unit, in particular for determining according to M_iPositive and negative of (2)_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iAnd obtaining a second time-frequency resource block set corresponding to the ith first time-frequency resource block set by | sub-carriers.

In one possible implementation, the ith first set of time-frequency resource blocks includes N_iA first PRB, the first PRB comprises K continuous subcarriers, and the reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, K is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer; a determination unit, in particular for determining according to N_iA first PRB and M_iDetermining N included in a second time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA second PRB; wherein each second PRB comprises K- | M_iThe frequency domain position relation of the subcarriers included by the second PRB and the subcarriers included by the first PRB is according to M_iPositive and negative of (2) are determined.

In one possible implementation, the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is according toM_iThe positive and negative determinations of (1) comprise: according to M_iDetermining that the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is one of the following: the lowest frequency-domain-index subcarrier included by the second PRB is aligned with the lowest frequency-domain-index subcarrier included by the first PRB, or the lowest frequency-domain-index subcarrier included by the second PRB is aligned with the highest frequency-domain-index subcarrier included by the first PRB.

In one possible implementation, the determining unit is further configured to determine the N-based parameter according to N_iA first PRB and M_iDetermining N included in a third time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA third PRB; wherein the third PRB includes | M_iL consecutive subcarriers, according to M_iDetermining that the frequency-domain position relationship between the subcarriers included in the third PRB and the subcarriers included in the first PRB is one of the following: the subcarriers with the lowest frequency domain index included by the third PRB are aligned with the subcarriers with the lowest frequency domain index included by the first PRB, or the subcarriers with the lowest frequency domain index included by the third PRB are aligned with the subcarriers with the highest frequency domain index included by the first PRB; determining at least one third time frequency resource block set corresponding to the at least one first time frequency resource block set; and the transmission unit is further configured to not perform data transmission on the time-frequency resource blocks in the at least one third set of time-frequency resource blocks.

In one possible implementation, the determining unit is specifically configured to determine at least one first set of time-frequency resource blocks and at least one reference value according to information sent by the base station or preconfigured; or, determining at least one first time-frequency resource block set and at least one reference value according to fourth time-frequency resource information sent by the base station.

In one possible implementation, when the user equipment is according to the M_iPositive and negative of (2) will be N_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_i| sub-carriers, getWhen a second time-frequency resource block set corresponding to the ith first time-frequency resource block set is obtained, the PRB in the second time-frequency resource block set is aligned with the PRB of the LTE system in the frequency domain position; or N when the second time frequency resource block set comprises_iA plurality of second PRBs, each second PRB including K-M_iWhen there are | consecutive subcarriers, there is no interference between the second PRB in the second set of time-frequency resource blocks and the PRB of the LTE system in the frequency domain.

In one possible implementation, the user equipment further includes: a receiving unit, configured to receive, in at least one slot of an odd slot or an even slot, at least one first set of time-frequency resource blocks and at least one reference value sent by a base station; or, receiving at least one first time-frequency resource block set information and at least one reference value sent by the base station through higher layer signaling.

In one possible implementation, the receiving unit is further configured to transmit the at least one first set of time-frequency resource blocks and the at least one reference value through common control information or a common channel.

In a fourth aspect, an embodiment of the present invention provides a base station, where the base station includes: the base station includes: a determining unit, configured to determine at least one first set of time-frequency resource blocks and at least one reference value; a sending unit, configured to send at least one first set of time-frequency resource blocks and at least one reference value to a user equipment.

In one possible implementation, the base station further includes: and the transmission unit is used for carrying out data transmission with the user equipment on the time-frequency resource blocks in the at least one second time-frequency resource block set.

In one possible implementation, the determining unit is specifically configured to determine at least one first set of time-frequency resource blocks and at least one reference value according to preconfigured information; or, determining at least one first time-frequency resource block set and at least one reference value according to the fourth time-frequency resource information; the fourth time-frequency resource is a resource of an LTE system, and the first time-frequency resource is a resource of an NR system.

Based on the above technical solution, the resource allocation method, the user equipment and the base station provided in the embodiments of the present invention can jointly deploy carriers of different systems in one carrier, and simultaneously reduce or avoid interference between carriers of two systems.

Drawings

Fig. 1a is a schematic diagram of PRB distribution when the bandwidth of an LTE system is 3 MHz;

FIG. 1b is a schematic diagram of PRB distribution when the bandwidth of NR carrier is 3 MHZ;

fig. 1c is a schematic diagram of frequency domain misalignment where a 3MHz spectrum coexists for an LTE carrier and an NR carrier;

fig. 2 is a schematic diagram of a communication system architecture according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a resource allocation method according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a co-existing 3MHz spectrum of an LTE carrier and an NR carrier according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of frequency domain misalignment of a 40MHz spectrum for both LTE and NR carriers;

fig. 6 is a schematic diagram of a co-existing 40MHz spectrum of an LTE carrier and an NR carrier according to an embodiment of the present invention;

fig. 7 is a schematic frequency spectrum diagram of coexistence of NR carrier including PSS/SSS/PBCH and LTE carrier according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a co-existing 3MHz spectrum of another LTE carrier and an NR carrier according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another ue according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of another base station according to an embodiment of the present invention.

Detailed Description

The technical solution in 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.

For the understanding of the embodiments of the present invention, the technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and the embodiments.

Fig. 2 is a schematic diagram of a communication system architecture according to an embodiment of the present invention. As shown in fig. 2, the communication system includes a base station 210 and a user equipment 220. The techniques described in the embodiments of the present invention may be used in NR systems, or fifth generation 5G communication systems, or other wireless communication systems using various wireless access technologies, such as code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access, and the like. In addition, the method can also be applied to other subsequent evolution systems of the LTE system.

The terms "network" and "system" are often used interchangeably in this application, but those skilled in the art will understand the meaning. The user equipment referred to in the present application may include various handheld devices having wireless communication functions, vehicle-mounted devices, Wearable Devices (WD), computing devices or other processing devices connected to a wireless modem, and various forms of Mobile Stations (MS), terminals (terminal), terminal devices (terminal), and the like. A Base Station (BS) is a network device deployed in a radio access network to provide a terminal with a wireless communication function. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, names of devices having base station functions may be different, for example, in an LTE network, the device is called an evolved NodeB (eNB or eNodeB), in a fifth generation 5G or NR network, the device is called a new radio NodeB (NR-NB), and so on. For convenience of description, the user equipment may be referred to as UE, and the network equipment providing the UE with the wireless communication function may be referred to as base station.

It should be understood that the carrier referred in the embodiments of the present application may be a serving cell, a subband, a time-frequency resource set, and the like, and the present application is not limited thereto.

In one possible example, the base station 210 issues resource configuration information to the ue 220, and the ue 220 determines time-frequency resources capable of performing data transmission according to the received resource configuration information. The configuration information issued by the base station 210 may include at least one first time-frequency resource block set and at least one reference value information. The reference value here may be a frequency domain offset value or a relative position parameter value.

In a possible specific example, the user equipment 220 performs frequency domain shift on subcarriers included in the corresponding first time-frequency resource block set to the upper end or the lower end of the frequency band according to the frequency domain shift value to obtain a corresponding second time-frequency resource block set. The user equipment 220 uses the time frequency resources comprised by the second set of time frequency resource blocks for data transmission. Wherein the ith first time-frequency resource block comprises N_iA plurality of first PRBs, each of the first PRBs comprising k subcarriers. And if at least one first time-frequency resource block set belongs to the NR system resource, aligning the PRB in the second time-frequency resource block obtained after the frequency domain offset in the NR system with the PRB in the LTE system. So that when the user equipment 220 uses the second time-frequency resource block in the NR system for data transmission, the user equipment will not have a misalignment with the PRB of the LTE system and introduce inter-subcarrier interference.

In another possible specific example, the user equipment 220 extracts a number of subcarriers included in a PRB in the corresponding first time-frequency resource block set according to the relative position parameter value, so as to obtain a corresponding second time-frequency resource block. And if at least one first time-frequency resource block set belongs to the resources of the NR system, aligning the PRB in the second time-frequency resource block obtained after the subcarriers are extracted from the NR system with the PRB in the LTE system. In one example, as shown in fig. 1c, the PRB9 of the NR system includes 12 subcarriers corresponding to 1 subcarrier of the PRB8 and 11 subcarriers of the PRB9 in the LTE system. Then, the ue 220 extracts 11 subcarriers in the PRB9 as a new PRB9 according to the configuration information sent by the base station 210. The extracted NR system PRB9 includes subcarriers aligned with the subcarriers of the lowest frequency-domain index of the LTE system PRB 9. So that when the user equipment 220 uses the second time-frequency resource block in the NR system to perform data transmission, the user equipment will not have a misalignment with the PRB of the LTE system and introduce inter-subcarrier interference.

The communication system provided by the embodiment of the invention can enable the carriers of the two systems to be jointly deployed on the same spectrum resource, and enable the PRB frequency domains of the two carriers to be aligned or eliminate the PRB interference of the two systems by reasonably configuring the resources, thereby effectively reducing the interference between the carriers of the two systems.

Accordingly, fig. 3 is a schematic flow chart of a resource allocation method according to an embodiment of the present invention. As shown in fig. 3, steps S101 to S103 are included.

In step S101, the user equipment determines at least one first set of time-frequency resource blocks and at least one reference value.

Wherein the at least one first set of time-frequency resource blocks corresponds to the at least one reference value one to one.

It should be noted that, at least one first set of time-frequency resource blocks and at least one reference value belong to the resource configuration information related to the embodiment of the present invention. And the user equipment uses the corresponding time-frequency resource to carry out data transmission according to the resource configuration information.

In one possible embodiment, the user equipment determines the at least one first set of time-frequency resource blocks and the at least one reference value according to pre-configuration information sent by the base station; or, the user equipment determines the at least one first time-frequency resource block set and at least one reference value according to fourth time-frequency resource information sent by the base station. In an example, the fourth time-frequency resource is a resource of an LTE system, and the first time-frequency resource is a resource of an NR system.

In one possible embodiment, the ue receives the at least one first set of time and frequency resource blocks and the at least one reference value transmitted by the base station in at least one of an odd slot (slot) or an even slot; or, the user equipment receives the at least one first time-frequency resource block set information and the at least one reference value sent by the base station through a high-layer signaling.

It should be noted that one subframe of the LTE system may correspond to two slots of the NR system. Therefore, the user equipment may receive the at least one first set of time and frequency resource blocks and the at least one reference value transmitted by the base station in at least one of an odd slot or an even slot. For example, in one timeslot, the ue receives resource configuration information allocated by the base station according to a possible system interference situation, and in another timeslot, the ue may also receive resource configuration information allocated by the base station according to an actual interference situation, where the actual interference situation refers to an overlapping position of time-frequency resources allocated by the LTE system and the NR system, and the NR system may not perform resource mapping in the overlapping position and notify the ue of not receiving information of the NR system in the overlapping position. The base station can flexibly control according to the specific conditions of the two systems.

In one possible embodiment, the ue receives the at least one first set of time and frequency resource blocks and the at least one reference value sent by the base station through common control information or a common channel. And the resource configuration information is broadcasted to all user equipment in the cell of the base station through common control information or a common channel.

In step S102, the ue determines at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value, where the second set of time-frequency resource blocks and the corresponding first set of time-frequency resource blocks are not completely overlapped in frequency domain position.

And the at least one second time-frequency resource block set corresponds to the at least one first time-frequency resource block set in a one-to-one mode.

In one possible embodiment, the ith first set of time-frequency resource blocks includes N_iThe reference value corresponding to the ith first time-frequency resource block set of the first PRB is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, N_iIs an integer greater than 0, M_iAre integers.

Specifically, the determining, by the user equipment, at least one second set of time-frequency resource blocks according to at least one first set of time-frequency resource blocks and at least one reference value includes: the user equipment is according to the M_iPositive and negative of (2) will be N_iThe first PRB comprisesIs shifted in the frequency band towards one of the upper end or the lower end of the frequency band by | M_iAnd obtaining a second time-frequency resource block set corresponding to the ith first time-frequency resource block set by the I sub-carriers.

In a more specific embodiment, the base station notifies the user equipment or predefines T PRB sets and T reference values, where the T PRB sets correspond to the at least one first set of time-frequency resource blocks. The ith PRB set comprises N_iEach PRB, the reference value corresponding to the ith PRB set is M_iAnd different PRB sets cannot contain the same PRB, and the T PRB sets correspond to the T reference values one by one.

Wherein, T reference values can be negative integers, or 0, or positive integers, when M is_iWhen the number of the subcarriers is a positive integer, the subcarriers contained in the ith PRB set are shifted to the upper end of the frequency spectrum by M subcarriers; when M is_iWhen the number of the subcarriers is a negative integer, the subcarriers contained in the ith PRB set are shifted to the lower end of the frequency spectrum by M subcarriers; when is M_iWhen the value is 0, it indicates that the subcarriers included in the ith PRB set are not shifted.

It will be appreciated that the base station may pre-define different frequency domain offset patterns for different system bandwidths. PRB frequency domains of different systems are aligned, and interference among carriers is avoided. It should be noted that the frequency domain offset pattern herein refers to resource configuration information, and each PRB set and its corresponding frequency domain offset value form a frequency domain offset pattern.

In addition, the base station informs the user equipment to use the PRB after frequency domain offset as a time-frequency resource block to carry out data transmission according to the resource configuration information. And the T PRB sets are subjected to frequency domain deviation according to the T reference values to obtain new T PRB sets corresponding to the at least one second time-frequency resource block set.

In one possible embodiment, the at least one first set of time-frequency resource blocks includes at least one of Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Physical Broadcast Channel (PBCH). Correspondingly, when the user equipment performs frequency domain offset on the first time-frequency resource block set according to the reference value, the user equipment skips subcarriers included by the PSS, SSS or PBCH. That is, the frequency domain position of the subcarrier included by the PSS, SSS, or PBCH in the second time-frequency resource block set obtained after the shifting is consistent with the position before the shifting, so as to ensure that the user equipment is successfully accessed to the base station initially.

In a more specific embodiment, the base station informs or predefines P frequency domain resource blocks, where P is an integer greater than or equal to 1. The P frequency domain resource blocks correspond to subcarriers included by the PSS, SSS, or PBCH. When the user equipment performs frequency domain offset on the T PRB sets according to at least one reference value, if subcarriers need to be offset to subcarriers included in P frequency domain resource blocks, the offset needs to be added with the number of subcarriers included in the P frequency domain resource blocks. It is to be understood that the aforementioned T reference values may be understood as T frequency domain offset values.

In one possible embodiment, each first PRB includes K consecutive subcarriers, where K is an integer greater than 0. Specifically, the determining, by the ue, at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value includes: the user equipment is according to the N_iA first PRB and the M_iDetermining N included in a second time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA second PRB; wherein each second PRB comprises K- | M_iL continuous subcarriers, the frequency domain position relationship of the subcarriers included by the second PRB and the subcarriers included by the first PRB is according to the M_iPositive and negative of (2) are determined.

In particular, according to said M_iDetermining that the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is one of the following: the subcarriers with the lowest frequency domain index included in the second PRB are aligned with the subcarriers with the lowest frequency domain index included in the first PRB, or the subcarriers with the highest frequency domain index included in the second PRB are aligned with the subcarriers with the highest frequency domain index included in the first PRB.

In one possible embodiment, when the user equipment is according to the M_iPositive and negative of (2) will be N_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iWhen a second time-frequency resource block set corresponding to the ith first time-frequency resource block set is obtained, | subcarrier, PRBs in the second time-frequency resource block set are aligned with PRBs of the LTE system in the frequency domain position; or N when the second time frequency resource block set comprises_iA plurality of second PRBs, each second PRB including K-M_iWhen there are | consecutive subcarriers, there is no interference between the second PRB in the second set of time-frequency resource blocks and the PRB of the LTE system in the frequency domain.

In one possible embodiment, the method provided by this embodiment further comprises: the user equipment is according to the N_iA first PRB and the M_iDetermining N included in a third time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA third PRB. Wherein the third PRB comprises | M_iL consecutive subcarriers according to the M_iDetermining that the frequency-domain position relationship between the subcarriers included in the third PRB and the subcarriers included in the first PRB is one of the following: the subcarriers with the lowest frequency domain index included in the third PRB are aligned with the subcarriers with the lowest frequency domain index included in the first PRB, or the subcarriers with the highest frequency domain index included in the third PRB are aligned with the subcarriers with the highest frequency domain index included in the first PRB. And the user equipment determines at least one third time-frequency resource block set corresponding to the at least one first time-frequency resource block set. And the user equipment does not transmit data in the time frequency resource blocks in the at least one third time frequency resource block set.

In a more specific embodiment, the base station informs the user equipment or predefines T PRB sets and T reference values. The T reference values here are also to be understood as phase position parameters. Wherein, the T PRB sets correspond to the at least one first time-frequency resource block set. The ith PRB set comprises N_iEach PRB, the reference value corresponding to the ith PRB set is M_iAnd different PRB sets cannot contain the same PRB, and the T PRB sets correspond to the T reference values one by one.

Wherein, T reference values can be negative integers, or 0, or positive integers, when M is_iM representing the lowest (highest) index within each PRB when it is a positive integer_iA subcarrier; when M is_iM representing the highest (lowest) index within each PRB when it is a negative integer_iAnd (4) sub-carriers. It will be appreciated that here M is the highest (lowest) index within each PRB_iThe subcarriers correspond to a third PRB. In addition, here the K-M of the highest (lowest) index within each PRB_iThe subcarriers correspond to a second PRB. It can be understood that the PRBs included in the resource configuration information transmitted by the base station may be both understood as the first PRBs.

Specifically, the base station informs the user equipment of the number of 1 or more PRBs in T PRB sets in even time slots or odd time slots, and for a certain PRB (the corresponding relative position parameter is M)_i) In the current time slot and the next time slot, the base station is at M of the lowest (highest) index of the PRB_iNo data information is mapped on the subcarriers. M of lowest (highest) index of user equipment not to the PRB_iThe data on the subcarriers is decoded.

It will be appreciated that the base station may pre-define different sets of PRBs and relative location parameters for different system bandwidths. So that carrier interference between PRB frequency domains of different systems can not occur.

In one possible example, M is recited above_iThe relationship of the frequency domain shift directions corresponding to positive and negative values, or M_iThe frequency domain alignment direction relationship between the first PRB and the second/third PRB corresponding to the positive and negative values is taken as a possible situation to describe the embodiment of the present invention, and no limitation is made to the embodiment of the present invention.

In step S103, the ue uses the time-frequency resource blocks in the at least one second set of time-frequency resource blocks for data transmission.

Specifically, the user equipment uses the second time frequency resource block after PRB alignment for data transmission. PRB frequency domains of different systems are aligned, and interference among carriers is avoided. Or the user equipment uses the second time frequency resource block without PRB interference to carry out data transmission, so that PRBs of different systems do not have carrier interference.

The resource allocation method provided by the embodiment of the invention can realize that carriers of different systems are jointly deployed in the same spectrum resource. For example, if the LTE carrier and the NR carrier are to be jointly deployed in one spectrum resource, the base station issues resource configuration information of the NR user equipment, which is determined according to the deployment condition of PRBs in the LTE carrier, so as to jointly deploy the LTE carrier and the NR carrier in one spectrum resource, and reduce or avoid interference between the LTE carrier and the NR carrier.

The resource allocation method shown in fig. 3 can be seen in the following embodiments.

In one embodiment of the invention, LTE and NR carriers coexist on the same spectrum bandwidth, including but not limited to partially overlapping, fully overlapping, and excessively overlapping deployments. The base station informs the NR user equipment of the PRB frequency domain offset pattern, and indicates the offset patterns of different PRB sets in the system bandwidth. For a certain PRB set, the subcarriers contained in the PRBs in the PRB set are all shifted to the upper end of the frequency band by M_iSub-carriers, or both, shifted towards the lower end of the band by M_iSub-carriers, M_iWhen 0, no offset is indicated. Offset value M for different PRB sets_iMay be different.

In one possible embodiment, the base station may pre-define several frequency domain offset patterns and indicate semi-statically/dynamically which pattern to use. Or, the base station semi-statically/dynamically indicates the frequency domain offset pattern corresponding to the user equipment.

Fig. 4 is a schematic diagram of a 3MHz spectrum coexisting in an LTE carrier and an NR carrier according to an embodiment of the present invention. As shown in fig. 4, in the 3MHz spectrum where the LTE carrier and the NR carrier coexist, the system bandwidths of both carriers are 15 PRBs, and the start subcarriers of the PRBs 0 in both carriers are aligned in the frequency domain. The base station informs the NR user equipment of PRB frequency domain offset patterns through the resource configuration information as follows:

the resource configuration information issued by the base station is as follows: PRB0-PRB7, PRB8-PRB 14; the corresponding reference value is 0, 1. The base station informs the NR user equipments how to divide the PRB set through the resource configuration information, namely, the PRBs 0 to 7 are called PRB set 1, and the PRBs 8 to 14 are called PRB set 2. Or, the PRB with the frequency-domain position of the PRB starting subcarrier lower than the DC subcarrier is referred to as PRB set 1(PRB0 to PRB7), and the PRB with the frequency-domain position of the PRB starting subcarrier higher than the DC subcarrier is referred to as PRB set 2(PRB8 to PRB 14). And the base station informs the user equipment that the subcarrier offset of PRB set 1 is 0. The subcarriers of PRB set 2 are offset by 1 subcarrier towards the upper end of the band. As shown in fig. 4, the subcarriers included in the PRB8 are shifted by 1 subcarrier toward the upper end of the frequency band, and the NR user equipment does not use the lowest frequency-domain index subcarrier included in the PRB8 before the shift for data transmission.

In one possible embodiment, a frequency-domain offset pattern may be preset, where a PRB with a frequency-domain position of a PRB starting subcarrier lower than a DC subcarrier is referred to as a PRB set 1(PRB0 to PRB7), a PRB with a frequency-domain position of a PRB starting subcarrier higher than a DC subcarrier is referred to as a PRB set 2(PRB8 to PRB14), the PRB set 1 is not offset, and subcarriers of the PRB set 2 are offset by 1 subcarrier towards the upper end of the band.

In a possible embodiment, the resource configuration information issued by the base station is: the base station only needs to inform the user equipment of the PRB set information and the corresponding frequency domain deviation value which need to be subjected to frequency domain deviation. For example, the resource configuration information issued by the base station is: PRB8-PRB 14; the corresponding reference value is 1. In addition, the base station may preset a relationship between the positive and negative of the reference value and the offset direction of the ue in advance, or may notify the ue to offset the corresponding subcarrier to the upper end or the lower end of the frequency band by an instruction in each resource configuration information transmission. For the PRBs or PRB sets that do not need to perform band shifting, the base station may not send the resource configuration information, and the user equipment may use it directly.

In one possible communication scenario, when LTE is deployed over a wider spectrum in a carrier aggregation of continuous spectrum, each carrier has one DC subcarrier and there is a guard band between the carriers, as shown in fig. 5, over a continuous spectrum of 40MHz, the base station aggregates two 20MHz carriers, carrier 1 and carrier 2 in fig. 5, each carrier has one DC subcarrier, and there is a guard band of 285kHz (19 subcarriers) between the two carriers. If the bandwidth of the NR system is 40MHz and includes 200 PRBs, as shown in fig. 5, there is a case where the 200 PRBs of the NR system are not aligned with the PRBs of the LTE carrier in the frequency domain.

Correspondingly, fig. 6 is a schematic diagram of a 40MHz spectrum coexisting in an LTE carrier and an NR carrier provided in an embodiment of the present invention. As shown in fig. 6, the resource allocation information issued by the base station is: PRB0-PRB49, PRB50-PRB100, PRB101-PRB150, PRB151-PRB 199; the corresponding reference values are 0,1, 8, 9. Accordingly, the PRB0-PRB49 is not offset in the NR carrier, the PRB50-PRB100 is offset by 1 subcarrier upward, the PRB101-PRB150 is offset by 8 subcarriers upward, and the PRB151-PRB199 is offset by 9 subcarriers upward.

It should be noted that, the guard band corresponding to 19 subcarriers between two LTE carriers does not cause interference to the NR carrier. One PRB may be correspondingly deployed in the NR carrier. The LTE carrier or the NR carrier can be shifted according to actual needs, so that the PRB between the two carriers is allowed to have no interference. I.e. there is no frequency-domain misalignment of the PRBs of one system with the PRBs of another system.

According to the resource allocation method provided by the embodiment of the invention, the base station informs the NR user equipment to shift part of PRBs by a plurality of sub-carriers, so that the PRBs of the NR carrier and the LTE carrier are aligned on the frequency domain, and the interference between the PRBs is avoided. The predefined set of PRBs and frequency domain offset values may be implicitly indicated according to the bandwidth of the NR carrier and the bandwidth and distribution of the LTE carrier.

In another embodiment of the invention, the base station informs the NR user equipments of the PRB frequency domain offset pattern. And skipping the PRB where the PSS/SSS/PBCH is located for offsetting when the PRB adjacent to the PRB where the PSS/SSS/PBCH is located for offsetting.

Fig. 7 is a schematic frequency spectrum diagram of coexistence of an NR carrier including PSS/SSS/PBCH and an LTE carrier according to an embodiment of the present invention. As shown in fig. 7, the PSS/SSS/PBCH is at PRB7 through PRB12 of the NR carrier before the NR carrier is not offset. The base station notifies the PRB6 and PRB13 to shift by 1 subcarrier towards the upper end of the frequency band, and after the NR carrier is shifted, the PRB6 skips the PRB7-PRB12 to shift, that is, the subcarriers included in the shifted PRB6 are 11 continuous subcarriers at the lower end of the frequency spectrum adjacent to the PRB7 and 1 subcarrier at the upper end of the frequency spectrum adjacent to the PRB 12.

Specifically, the base station predefines the time-frequency resource set to be skipped as follows: PRB7-PRB 12. The resource configuration information issued by the base station is as follows: PRB6-PRB 13; the corresponding reference value is 1. When the sub-carriers of the highest frequency domain index included in the PRB6 are shifted to the frequency domain position where the set PRB7-PRB12 is located, the shift amount needs to be added with the number of sub-carriers included in the PRB7-PRB 12. The offsets of subsequent PRBs are similar.

In yet another embodiment of the invention, the PRBs of the NR carriers are not frequency-domain shifted, but rather the NR user equipment is informed of the misaligned PRB pattern and the actually interfering PRB sequence numbers.

Fig. 8 is a schematic diagram of a co-existing 3MHz spectrum of another LTE carrier and an NR carrier according to an embodiment of the present invention. As shown in fig. 8, the base station notifies the NR user equipments of the PRB non-aligned pattern, that is, notifies the NR user equipments that the frequency-domain positions of the starting subcarriers of the PRBs 8 through 14 are not aligned with the PRBs 8 through 14 of the LTE carrier, and there is an offset of 1 subcarrier. The resource configuration information issued by the base station is as follows: PRB8-PRB14, corresponding to a reference value of 1.

When the NR carrier uses a 15kHz subcarrier interval and one slot length is 7 symbols, one LTE subframe corresponds to two slots, an even slot and an odd slot of the NR. Assuming that the PRBs required to be allocated to the LTE users in the network are the PRBs 8 and the PRBs 10-PRBs 14 in the LTE carrier, and the PRBs allocated to the NR users in the network are the PRBs 0-PRBs 7 and the PRBs 9 in the NR carrier, at this time, the PRB8 of the LTE carrier may have interference of one subcarrier to the PRB9 of the NR carrier, specifically, the subcarrier with the lowest index of the PRB9 in the NR carrier. The base station informs the number of the PRB9 to the NR users in the network through the common control information, if the time-frequency resource used by the NR user equipment contains the PRB9, the base station knows that the subcarrier with the lowest index of the PRB9 is interfered.

The base station does not perform data resource mapping on the sub-carrier of the lowest frequency domain index of the PRB9 of the NR carrier. For example, by reducing the number of bits of resource mapping through rate matching, when the NR user equipment receives data from PRB9, since it knows that PRB9 is interfered, it does not decode the lowest index subcarrier of PRB9, and only decodes the 11 subcarriers after removing the lowest index subcarrier of PRB 9. Here, the 11 subcarriers excluding the lowest index subcarrier of the PRB9 are new PRBs 9, new PRBs 9 correspond to subcarriers of the PRB9 of the LTE carrier, and new PRBs 9 correspond to no subcarriers of the PRB8 of the LTE system, so the PRB8 of the LTE carrier has no subcarrier interference with the new PRB9 of the NR carrier. By informing the non-aligned PRB pattern and the actually interfered PRB serial number of the NR user equipment, the user equipment uses a new PRB to carry out data transmission, and the interference caused by the non-aligned PRB of the NR system and the non-aligned PRB of the LTE system is eliminated.

The base station informs the PRB alignment patterns of the NR carrier and the LTE carrier, and informs an NR user of the actual interference situation during each scheduling, namely the PRBs on which the NR user can be interfered, and the NR user knows which subcarriers on which PRBs are interfered according to the PRB alignment patterns and the actual interference situation, so that the interference subcarriers and the non-interference subcarriers can be distinguished.

The base station informs the UE of PRB alignment patterns of the NR carrier and the LTE carrier through a broadcast channel or high-layer signaling, and informs an NR user of a plurality of PRB numbers in an even time slot or an odd time slot, wherein the PRBs are the PRBs interfered by the LTE carrier.

Through the introduction of the foregoing fig. 2 and fig. 3, and the first, second, and third embodiments, the resource configuration method, the user equipment, and the base station provided in the embodiments of the present invention may deploy an LTE carrier and an NR carrier to a spectrum resource together, and reduce or avoid interference between the LTE carrier and the NR carrier.

Accordingly, an embodiment of the present invention provides a user equipment, so as to implement the resource allocation method provided in the foregoing embodiment. As shown in fig. 9, the user equipment includes: a determining unit 910, a transmitting unit 920 and a receiving unit 930.

The embodiment provides a determining unit 910 of a user equipment, configured to determine at least one first set of time-frequency resource blocks and at least one reference value.

And the at least one first time-frequency resource block set corresponds to at least one reference value one to one.

The determining unit 910 is further configured to determine at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value, where the second set of time-frequency resource blocks and the corresponding first set of time-frequency resource blocks do not completely overlap in frequency domain position.

The transmission unit 920 is configured to use the time frequency resource blocks in the at least one second set of time frequency resource blocks for data transmission.

In one possible embodiment, the ith first set of time-frequency resource blocks includes N_iThe reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer; the determining unit 910 is specifically configured to determine according to M_iPositive and negative of (2)_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iAnd obtaining a second time-frequency resource block set corresponding to the ith first time-frequency resource block set by | sub-carriers.

In one possible embodiment, the ith first set of time-frequency resource blocks includes N_iA first PRB, the first PRB comprises K continuous subcarriers, and the reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, K is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer; the determining unit 910 is specifically configured to determine from N_iA first PRB and M_iDetermining N included in a second time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA second PRB; wherein each second PRB comprises K- | M_iThe frequency domain position relation of the subcarriers included by the second PRB and the subcarriers included by the first PRB is according to M_iPositive and negative of (2) are determined.

In a possible embodiment, the determining unit 910 is specifically configured to determine according to M_iDetermining that the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is one of the following: the second PRB comprises the lowest frequency domain index subcarrierThe wave is aligned with the subcarrier of the lowest frequency-domain index included in the first PRB, or the subcarrier of the highest frequency-domain index included in the second PRB is aligned with the subcarrier of the highest frequency-domain index included in the first PRB.

In a possible embodiment, the determining unit 910 is specifically configured to determine at least one first set of time-frequency resource blocks and at least one reference value according to pre-configuration information sent by a base station; or, determining at least one first time-frequency resource block set and at least one reference value according to fourth time-frequency resource information sent by the base station.

In one possible embodiment, the fourth time-frequency resource is a resource of a long term evolution LTE system, and the first time-frequency resource is a resource of a new access technology NR system.

In one possible embodiment, the receiving unit 930 is configured to receive at least one first set of time and frequency resource blocks and at least one reference value transmitted by the base station in at least one of an odd slot or an even slot; alternatively, the receiving unit 930 is configured to receive the at least one first set of time-frequency resource blocks and the at least one reference value sent by the base station through higher layer signaling.

In one possible embodiment, the receiving unit 930 is configured to receive at least one first set of time and frequency resource blocks and at least one reference value transmitted by the base station through common control information or a common channel.

The functions of each part of the user equipment provided in this embodiment may specifically refer to the detailed descriptions of fig. 2 to fig. 8, which are not described herein again.

In addition, the user equipment provided in the embodiment of the present invention may further adopt the following implementation manner to implement the resource allocation method in the foregoing embodiment of the present invention, as shown in fig. 10, where the user equipment includes: a receiver 1010, a processor 1020, a memory 1030, and a transmitter 1040.

In alternative embodiments, the determining unit 910 in the aforementioned embodiment described in fig. 9 may be replaced by the receiver 1010 or the memory 1030. Specifically, the at least one first set of time-frequency resource blocks and the at least one reference value are information preconfigured in the memory 1030 or information received by the receiver 1010 from the base station.

The determining unit 920 may also be replaced by the processor 1020, in particular, the processor 1020 determines at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value. The transmission unit 930 may be replaced by a receiver 1010 or a transmitter 1040.

The processing procedure related to each unit in fig. 10 can refer to the specific embodiment shown in fig. 2 to fig. 9, which is not described herein again.

Accordingly, an embodiment of the present invention provides a base station, so as to implement the resource allocation method provided in the foregoing embodiment. As shown in fig. 11, the base station includes: a determination unit 1110, a transmission unit 1120, and a transmission unit 1130.

The determining unit 1110 of the base station provided in this embodiment is configured to determine at least one first set of time-frequency resource blocks and at least one reference value.

The transmitting unit 1120 is configured to transmit the at least one first set of time-frequency resource blocks and the at least one reference value to a user equipment.

Specifically, the sending unit 1120 sends the at least one first set of time-frequency resource blocks and the at least one reference value to the user equipment, so that the user equipment determines at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value, where the at least one second set of time-frequency resource blocks corresponds to the at least one first set of time-frequency resource blocks one to one, and the second set of time-frequency resource blocks does not completely overlap with the corresponding first set of time-frequency resource blocks in frequency domain positions; and enabling the user equipment to use the time frequency resource blocks in the at least one second time frequency resource block set for data transmission.

In one possible embodiment, the transmitting unit 1130 is configured to perform data transmission with the user equipment in the time-frequency resource blocks of the at least one second set of time-frequency resource blocks.

In a possible embodiment, the determining unit 1110 is specifically configured to determine the at least one first set of time-frequency resource blocks and the at least one reference value according to preconfigured information; or, determining the at least one first set of time-frequency resource blocks and at least one reference value according to the fourth time-frequency resource information; the fourth time-frequency resource is a resource of a Long Term Evolution (LTE) system, and the first time-frequency resource is a resource of a new access technology (NR) system.

In addition, the base station provided in the embodiment of the present invention may further adopt the following implementation manner to implement the resource allocation method in the foregoing embodiment of the present invention, as shown in fig. 12, where the base station includes: a processor 1210, a transmitter 1220, a receiver 1230, and a memory 1240.

In alternative embodiments, the determination unit 1110 in the previously described embodiment of fig. 11 may be replaced by the processor 1210 or the memory 1240. Specifically, the at least one first set of time-frequency resource blocks and the at least one reference value are pre-configured information in the memory 1240 or obtained by the processor 1210 according to LTE resource information.

The sending unit 1120 may be replaced by a transmitter 1220 and the transmitting unit 1130 may be replaced by a receiver 1230 or a transmitter 1220.

The processing procedure related to each unit in fig. 12 can refer to the specific embodiments shown in fig. 2 to fig. 8 and fig. 11, which are not described herein again.

Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be understood by those of ordinary skill in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by a program, and the program may be stored in a computer-readable storage medium, where the storage medium is a non-transitory (non-transitory) medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid state drive, a magnetic tape (magnetic tape), a floppy disk (floppy disk), an optical disk (optical disk) and any combination thereof.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for resource allocation, the method comprising:

the method comprises the steps that user equipment determines at least one first time-frequency resource block set and at least one reference value, wherein the first time-frequency resource is a resource of a new access technology NR system;

the user equipment determines at least one second time-frequency resource block set according to the at least one first time-frequency resource block set and the at least one reference value, wherein the second time-frequency resource block set is not completely overlapped with the corresponding first time-frequency resource block set in the frequency domain position, and PRBs in the second time-frequency resource block set are aligned with PRBs in an LTE system;

and the user equipment uses the time frequency resource blocks in the at least one second time frequency resource block set to carry out data transmission.

2. The method of claim 1, wherein the ith first set of time-frequency resource blocks comprises N_iThe reference value corresponding to the ith first time-frequency resource block set is M_i；

Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer;

the determining, by the user equipment, at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value includes:

the user equipment is according to the M_iPositive and negative of (2) will be N_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iAnd obtaining a second time-frequency resource block set corresponding to the ith first time-frequency resource block set by the I sub-carriers.

3. The method of claim 1, wherein the ith first set of time-frequency resource blocks comprises N_iA plurality of first PRBs, wherein the first PRBs comprise K continuous subcarriers, and a reference value corresponding to an ith first time-frequency resource block set is M_i；

Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, K is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer;

the user equipment is according to the N_iA first PRB and the M_iDetermining N included in a second time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA second PRB;

wherein each second PRB comprises K- | M_iL continuous subcarriers, the frequency domain position relationship of the subcarriers included by the second PRB and the subcarriers included by the first PRB is according to the M_iPositive and negative of (2) are determined.

4. The method according to claim 3, wherein the frequency-domain position relationship between the subcarriers comprised by the second PRB and the subcarriers comprised by the first PRB is according to the M_iThe positive and negative determinations of (1) comprise:

according to said M_iDetermining that the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is one of the following:

the subcarriers with the lowest frequency domain index included in the second PRB are aligned with the subcarriers with the lowest frequency domain index included in the first PRB, or the subcarriers with the highest frequency domain index included in the second PRB are aligned with the subcarriers with the highest frequency domain index included in the first PRB.

5. The method according to claim 3 or 4, characterized in that the method further comprises:

the user equipment is according to the N_iA first PRB and the M_iDetermining N included in a third time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA third PRB;

wherein the third PRB comprises | M_iL consecutive subcarriers according to the M_iDetermining that the frequency-domain position relationship between the subcarriers included in the third PRB and the subcarriers included in the first PRB is one of the following: the subcarrier with the lowest frequency domain index included in the third PRB and the subcarrier with the lowest frequency domain index included in the first PRBOr the subcarriers with the highest frequency-domain index included in the third PRB are aligned with the subcarriers with the highest frequency-domain index included in the first PRB;

the user equipment determines at least one third time-frequency resource block set corresponding to the at least one first time-frequency resource block set;

and the user equipment does not transmit data in the time frequency resource blocks in the at least one third time frequency resource block set.

6. The method of claim 1, wherein the UE determines at least one first set of time-frequency resource blocks and at least one reference value, comprising:

the user equipment determines the at least one first set of time-frequency resource blocks and the at least one reference value according to information sent by a base station or preconfigured; or the like, or, alternatively,

and the user equipment determines the at least one first time-frequency resource block set and the at least one reference value according to fourth time-frequency resource information sent by the base station.

7. The method of claim 6, wherein the fourth time-frequency resource is a resource of a Long Term Evolution (LTE) system.

8. The method of claim 7, wherein the UE is configured according to M_iPositive and negative of (2)_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iWhen a second time-frequency resource block set corresponding to the ith first time-frequency resource block set is obtained, | subcarrier, PRBs in the second time-frequency resource block set are aligned with PRBs of the LTE system in the frequency domain position; or the like, or, alternatively,

n when the second set of time-frequency resource blocks includes_iA plurality of second PRBs, each second PRB including K-M_iWhen there are | consecutive subcarriers, there is no interference between the second PRB in the second set of time-frequency resource blocks and the PRB of the LTE system in the frequency domain.

9. The method of claim 1, further comprising:

the user equipment receives the at least one first time-frequency resource block set information and the at least one reference value sent by the base station in at least one of an odd time slot or an even time slot; or the like, or, alternatively,

and the user equipment receives the at least one first time-frequency resource block set information and the at least one reference value sent by the base station through high-level signaling.

10. The method of claim 9, further comprising:

and the user equipment receives the at least one piece of first time-frequency resource block set information and the at least one reference value which are sent by the base station through common control information or a common channel.

11. A method for resource allocation, the method comprising:

a base station determines at least one first time-frequency resource block set and at least one reference value, wherein the first time-frequency resource is a resource of a new access technology NR system;

the base station sends the at least one first time-frequency resource block set and the at least one reference value to user equipment, so that the user equipment determines at least one second time-frequency resource block set according to the at least one first time-frequency resource block set and the at least one reference value, and uses the time-frequency resource blocks in the at least one second time-frequency resource block set for data transmission, wherein the second time-frequency resource block set and the corresponding first time-frequency resource block set are not completely overlapped in frequency domain position, and PRBs in the second time-frequency resource block set are aligned with PRBs in an LTE system.

12. The method of claim 11, further comprising:

and the base station transmits data with the user equipment in the time frequency resource blocks in the at least one second time frequency resource block set.

13. The method according to claim 11 or 12, wherein the base station determines at least one first set of time-frequency resource blocks and at least one reference value, comprising:

the base station determines the at least one first set of time-frequency resource blocks and at least one reference value according to pre-configuration information; or the like, or, alternatively,

the base station determines the at least one first time-frequency resource block set and at least one reference value according to the fourth time-frequency resource information; and the fourth time-frequency resource is a resource of a Long Term Evolution (LTE) system.

14. A user equipment, the user equipment comprising:

a determining unit, configured to determine at least one first set of time-frequency resource blocks and at least one reference value, where the first time-frequency resource is a resource of a new access technology NR system;

the determining unit is further configured to determine at least one second set of time-frequency resource blocks according to the at least one first set of time-frequency resource blocks and the at least one reference value, where the second set of time-frequency resource blocks and the corresponding first set of time-frequency resource blocks do not completely overlap in frequency domain position, and a PRB in the second set of time-frequency resource blocks is aligned with a PRB in an LTE system;

and the transmission unit is used for transmitting data by using the time frequency resource blocks in the at least one second time frequency resource block set.

15. The UE of claim 14, wherein the ith first set of time-frequency resource blocks comprises N_iThe reference value corresponding to the ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1,2 … T, and T is the sequence number of the first time-frequency resource block setTotal number, T is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer;

the determination unit is specifically configured to determine M_iPositive and negative of (2) will be N_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iAnd obtaining a second time-frequency resource block set corresponding to the ith first time-frequency resource block set by the I sub-carriers.

16. The UE of claim 14, wherein the ith first set of time-frequency resource blocks comprises N_iA plurality of first PRBs, wherein the first PRBs comprise K continuous subcarriers, and a reference value corresponding to an ith first time-frequency resource block set is M_i(ii) a Wherein i is the sequence number of the first time-frequency resource block set, i belongs to 1 and 2 … T, T is the total number of the first time-frequency resource block set, T is an integer greater than 0, K is an integer greater than 0, N_iIs an integer greater than 0, M_iIs an integer;

the determination unit is specifically configured to determine the N_iA first PRB and the M_iDetermining N included in a second time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA second PRB;

17. The UE of claim 16, wherein the frequency-domain position relationship between the subcarriers comprised by the second PRB and the subcarriers comprised by the first PRB is according to the M_iThe positive and negative determinations of (1) comprise: according to said M_iDetermining that the frequency-domain position relationship between the subcarriers included in the second PRB and the subcarriers included in the first PRB is one of the following: the subcarrier with the lowest frequency domain index included in the second PRB is aligned with the subcarrier with the lowest frequency domain index included in the first PRB, or the second PRB packetThe included subcarriers of the highest frequency domain index are aligned with the subcarriers of the highest frequency domain index included in the first PRB.

18. The UE of claim 16 or 17, wherein the determining unit is further configured to determine the N according to the N_iA first PRB and the M_iDetermining N included in a third time-frequency resource block set corresponding to the ith first time-frequency resource block set_iA third PRB; wherein the third PRB comprises | M_iL consecutive subcarriers according to the M_iDetermining that the frequency-domain position relationship between the subcarriers included in the third PRB and the subcarriers included in the first PRB is one of the following: the subcarriers with the lowest frequency domain index included by the third PRB are aligned with the subcarriers with the lowest frequency domain index included by the first PRB, or the subcarriers with the highest frequency domain index included by the third PRB are aligned with the subcarriers with the highest frequency domain index included by the first PRB; determining at least one third time-frequency resource block set corresponding to the at least one first time-frequency resource block set;

the transmission unit is further configured to not perform data transmission on the time frequency resource blocks in the at least one third set of time frequency resource blocks.

19. The UE of claim 14, wherein the determining unit is specifically configured to determine the at least one first set of time-frequency resource blocks and the at least one reference value according to information sent by a base station or preconfigured; or, the at least one first time-frequency resource block set and the at least one reference value are determined according to fourth time-frequency resource information sent by the base station.

20. The UE of claim 19, wherein the fourth time-frequency resource is a resource of a Long Term Evolution (LTE) system.

21. The UE of claim 20, wherein the UE is configured according to M_iPositive and negative of (2)_iThe subcarriers included in the first PRB are shifted in the frequency band by | M to one of the upper end or the lower end of the frequency band_iWhen a second time-frequency resource block set corresponding to the ith first time-frequency resource block set is obtained, | subcarrier, PRBs in the second time-frequency resource block set are aligned with PRBs of the LTE system in the frequency domain position; or N when the second time frequency resource block set comprises_iA plurality of second PRBs, each second PRB including K-M_iWhen there are | consecutive subcarriers, there is no interference between the second PRB in the second set of time-frequency resource blocks and the PRB of the LTE system in the frequency domain.

22. The user equipment of claim 14, wherein the user equipment further comprises:

a receiving unit, configured to receive, in at least one of an odd slot and an even slot, the at least one first set of time and frequency resource blocks and the at least one reference value sent by the base station; or, the at least one first time-frequency resource block set information and the at least one reference value sent by the base station are received through high-layer signaling.

23. The UE of claim 22, wherein the receiving unit is further configured to transmit the at least one first set of time/frequency resource blocks and the at least one reference value via common control information or a common channel.

24. A base station, characterized in that the base station comprises:

a sending unit, configured to send the at least one first time-frequency resource block set and the at least one reference value to a user equipment, so that the user equipment determines at least one second time-frequency resource block set according to the at least one first time-frequency resource block set and the at least one reference value, and uses a time-frequency resource block in the at least one second time-frequency resource block set for data transmission, where the second time-frequency resource block set and a corresponding first time-frequency resource block set are not completely overlapped in a frequency domain, and a PRB in the second time-frequency resource block set is aligned with a PRB in an LTE system.

25. The base station of claim 24, wherein the base station further comprises:

a transmission unit, configured to perform data transmission with the user equipment in the time-frequency resource blocks in the at least one second set of time-frequency resource blocks.

26. The base station according to claim 24 or 25, wherein the determining unit is specifically configured to determine the at least one first set of time-frequency resource blocks and the at least one reference value according to preconfigured information; or, determining the at least one first set of time-frequency resource blocks and at least one reference value according to the fourth time-frequency resource information; and the fourth time-frequency resource is a resource of a Long Term Evolution (LTE) system.