CN101998681A

CN101998681A - Method for processing signaling, and base station and user equipment

Info

Publication number: CN101998681A
Application number: CN2009101682280A
Authority: CN
Inventors: 官磊; 薛丽霞; 曲秉玉; 柯柏安; 弗雷德里克; 余政; 李超君
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-08-15
Filing date: 2009-08-15
Publication date: 2011-03-30
Anticipated expiration: 2029-08-15
Also published as: CN101998681B

Abstract

The embodiment of the invention discloses a method for processing a signaling, and a base station and user equipment. The method comprises the following steps of: generating at least one physical downward control channel (PDCCH) corresponding to at least one carrier respectively, wherein a state of a carrier indicator bit in the PDCCH corresponding to a non-prime carrier in the at least one carrier has a corresponding relationship with a dereference of a physical control format instruction channel (PCFICH) on the non-prime carrier; and sending the at least one PDCCH to the user equipment, so that the user equipment can acquire the dereference of the PCFICH on the non-prime carrier according to the state of the carrier indicator bit in the PDCCH corresponding to the non-prime carrier. By the embodiment of the invention, a physical downlink shared channel (PDSCH) is demodulated from a correct initial position information department in which the PDSCH is placed, the fallout ratio of the PDSCH is effectively reduced, and subsequent unnecessary feedback retransmission is avoided.

Description

Signaling processing method, base station and user equipment

Technical Field

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

Background

In an existing communication system, a Physical Downlink Control Channel (PDCCH) of a User Equipment (UE) may be indicated by a Physical Control Format Indicator Channel (PCFICH), and since the PDCCH may be located at the first 1, 2, or 3 symbols of a current subframe, or at a small bandwidth, the PDCCH may be located at the first 2, 3, or 4 symbols of the current subframe, a value of the PCFICH may indicate that the PDCCH occupies the first 1, 2, or 3 symbols of the current subframe, or when the bandwidth is small, information carried by the value of the PCFICH may indicate that the PDCCH occupies the first 2, 3, or 4 symbols of the current subframe. If the UE cannot successfully detect the value of the PCFICH, the UE cannot successfully detect the PDCCH in the current subframe. If the UE successfully detects the PDCCH, it indicates that the UE also successfully detects the value of the PCFICH, so that the UE detects that the PDCCH is an implicit check for detecting the value of the PCFICH of the corresponding carrier.

In a Long Term evolution-Advanced (Long Term evolution-Advanced, hereinafter referred to as LTE-a) system, a bandwidth wider than that of the LTE system needs to be supported, so that multiple carriers can be aggregated, and resources on the aggregated multiple carriers can be simultaneously scheduled to one UE for use. For a UE to which a plurality of carriers are allocated, it is necessary to generate a plurality of independent PDCCHs by encoding PDCCHs, respectively. The PDCCHs may be placed on a carrier corresponding to a Physical Downlink Shared Channel (PDSCH), or may be placed on one or more carriers. Fig. 1 is a schematic structural diagram illustrating that PDCCHs corresponding to a UE are respectively placed on corresponding carriers in the prior art, and as shown in fig. 1, the PDCCHs and PDSCHs corresponding to the PDCCHs are both placed on the same carrier, so that if the PDCCHs can be correctly checked on any carrier, the value of the PCFICH on the carrier is correctly checked, and thus the data start position of the PDSCHs on the carrier can be determined. Therefore, in this case, the PDCCH can still be used as an implicit check of the value of the PCFICH of the corresponding carrier. Fig. 2 is a schematic structural diagram illustrating a PDCCH corresponding to a UE being placed on one carrier in the prior art, and as shown in fig. 2, the PDCCH is carried across carriers, that is, the PDCCH and the PDSCH corresponding to the PDCCH are respectively carried on different carriers.

When all the PDCCHs of a certain UE are placed on one or a plurality of carriers, the value of the PCFICH on the carrier on which the PDCCH of the UE is not placed is separated from the corresponding PDCCH, so that the value of the PCFICH on the carrier on which the PDCCH of the UE is not placed cannot pass the check of the corresponding PDCCH. Once the value check of the PCFICH is wrong, the number of characters occupied by the PDCCH indicated by the value of the PCFICH is wrong, so that the UE demodulates the PDSCH from the wrong position, thereby causing misdetection of the PDSCH and subsequent unnecessary retransmission.

Disclosure of Invention

The embodiment of the invention provides a signaling processing method, a base station and user equipment, which are used for reducing the influence of value checking errors of a PCFICH on PDSCH demodulation.

The embodiment of the invention provides a signaling processing method, which comprises the following steps:

generating at least one Physical Downlink Control Channel (PDCCH) corresponding to at least one carrier, wherein a corresponding relation exists between the state of a carrier indication bit in the PDCCH corresponding to a non-primary carrier in the at least one carrier and the value of a Physical Control Format Indication Channel (PCFICH) on the non-primary carrier;

and sending the at least one PDCCH to user equipment, so that the user equipment can obtain the value of the PCFICH on the non-primary carrier according to the state of a carrier indication bit in the PDCCH corresponding to the non-primary carrier.

An embodiment of the present invention provides another signaling processing method, including:

generating at least one Physical Downlink Control Channel (PDCCH) corresponding to at least one carrier, wherein the state of a carrier indication bit in each PDCCH in the at least one PDCCH has a corresponding relation with the value of a Physical Control Format Indicator Channel (PCFICH) on the carrier corresponding to each PDCCH;

and sending the at least one PDCCH to user equipment, so that the user equipment can acquire the value of the PCFICH on the carrier corresponding to each PDCCH according to the state of the carrier indication bit in each PDCCH in the at least one PDCCH.

The embodiment of the invention provides another signaling processing method, which comprises the following steps:

receiving at least one Physical Downlink Control Channel (PDCCH) which is sent by a base station and corresponds to at least one carrier respectively, wherein a corresponding relation exists between the state of a carrier indication bit in the PDCCH corresponding to a non-main carrier in the at least one carrier and the value of a Physical Control Format Indication Channel (PCFICH) on the non-main carrier;

and acquiring the value of the PCFICH on the non-primary carrier according to the carrier indication bit state in the PDCCH corresponding to the non-primary carrier.

receiving at least one Physical Downlink Control Channel (PDCCH) which is sent by a base station and corresponds to at least one carrier, wherein a corresponding relation exists between the state of a carrier indication bit in each PDCCH in the at least one PDCCH and the value of a Physical Control Format Indication Channel (PCFICH) on the carrier corresponding to each PDCCH;

and acquiring the value of the PCFICH on the carrier corresponding to each PDCCH according to the state of the carrier indication bit in each PDCCH in the at least one PDCCH.

An embodiment of the present invention provides a base station, including:

a first generating module, configured to generate at least one physical downlink control channel PDCCH corresponding to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in a PDCCH corresponding to a non-primary carrier in the at least one carrier and a value of a physical control format indicator channel PCFICH on the non-primary carrier;

a first sending module, configured to send the at least one PDCCH to a user equipment, so that the user equipment obtains a value of the PCFICH on the non-primary carrier according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier.

An embodiment of the present invention provides another base station, including:

a second generating module, configured to generate at least one physical downlink control channel PDCCH corresponding to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in each PDCCH of the at least one PDCCH and a value of a physical control format indicator channel PCFICH on the carrier corresponding to the each PDCCH;

a second sending module, configured to send the at least one PDCCH to a user equipment, so that the user equipment obtains, according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH, a value of a PCFICH on a carrier corresponding to each PDCCH.

An embodiment of the present invention provides a user equipment, including:

a first receiving module, configured to receive at least one physical downlink control channel PDCCH that is sent by a base station and corresponds to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in the PDCCH corresponding to a non-primary carrier in the at least one carrier and a value of a physical control format indicator channel PCFICH on the non-primary carrier;

a first obtaining module, configured to obtain a value of the PCFICH on the non-primary carrier according to a carrier indicator bit state in the PDCCH corresponding to the non-primary carrier.

An embodiment of the present invention provides another user equipment, including:

a second receiving module, configured to receive at least one physical downlink control channel PDCCH that is sent by a base station and corresponds to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in each PDCCH of the at least one PDCCH and a value of a physical control format indicator channel PCFICH on the carrier corresponding to the each PDCCH;

a second obtaining module, configured to obtain, according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH, a value of the PCFICH on a carrier corresponding to each PDCCH.

In the above embodiment of the present invention, the carrier indication bit of the PDCCH is used to indicate the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located, and even if the PDCCH is carried on other carriers, the UE can also know the pcifiich on the carrier corresponding to the PDSCH scheduled by the UE through the carrier indication bit on the PDCCH, so that the accuracy of the UE in checking the value of the PCFICH is improved, and then the PDSCH can be demodulated from the correct starting position information where the PDSCH is placed, thereby effectively reducing the false detection rate of the PDSCH and avoiding the subsequent unnecessary feedback retransmission.

acquiring a Physical Downlink Shared Channel (PDSCH) from a region except a control region in a subframe, wherein the control region is the largest region capable of bearing a Physical Downlink Control Channel (PDCCH) in one subframe;

within the control region, the PDSCH is acquired using a reverse time order of the symbol arrangement in the subframe.

mapping a Physical Downlink Shared Channel (PDSCH) to a region in a subframe except a control region, wherein the control region is the largest region capable of bearing a Physical Downlink Control Channel (PDCCH) in the subframe;

within the control region, a PDSCH is mapped applying a reverse time order of symbol arrangement in a subframe.

An embodiment of the present invention provides a user equipment, including:

a third obtaining module, configured to obtain a physical downlink shared channel PDSCH from a region in a subframe except for a control region, where the control region is a largest region in the subframe that can carry a physical downlink control channel PDCCH;

a fourth obtaining module, configured to apply a reverse time sequence to the symbol arrangement in the subframe to obtain the PDSCH in the control region.

An embodiment of the present invention provides a base station, including:

the device comprises a first mapping module, a second mapping module and a third mapping module, wherein the first mapping module is used for mapping a Physical Downlink Shared Channel (PDSCH) to an area in a subframe except a control area, and the control area is the largest area capable of bearing a Physical Downlink Control Channel (PDCCH) in the subframe;

and a second mapping module, configured to map the PDSCH in the control region by applying a reverse time order to the symbol arrangement in the subframe.

In the above embodiment of the present invention, the subframe is divided into the control region and the region excluding the control region, and the PDSCH is mapped or acquired from the control region and the region excluding the control region according to the preset mapping order by using the new mapping method, so that the influence of the false detection of the value of the PCFICH on the demodulation of the PDSCH by the subsequent UE can be reduced, and the system performance is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram illustrating a structure in which PDCCHs corresponding to UEs are respectively placed on corresponding carriers in the prior art;

fig. 2 is a schematic structural diagram illustrating a PDCCH corresponding to a UE being placed on one carrier in the prior art;

fig. 3 is a flowchart of a signaling processing method according to an embodiment of the present invention;

fig. 4 is a flowchart of another signaling processing method according to an embodiment of the present invention;

fig. 5 is a flowchart of another signaling processing method according to an embodiment of the present invention;

fig. 6 is a flowchart of a signaling processing method according to another embodiment of the present invention;

fig. 7 is a flowchart of a signaling processing method according to another embodiment of the present invention;

fig. 8 is a flowchart of yet another signaling processing method according to an embodiment of the present invention;

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

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

fig. 11 is a schematic structural diagram of another ue 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;

fig. 13 is a schematic structural diagram of another user equipment according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a further user equipment according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of another user equipment according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of another base station according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 3 is a flowchart of a signaling processing method according to an embodiment of the present invention, and as shown in fig. 3, the method according to the embodiment may include:

step 301, at least one physical downlink control channel PDCCH corresponding to at least one carrier is generated.

And the state of a carrier indication bit in the PDCCH corresponding to the non-primary carrier in the at least one carrier and the value of a Physical Control Format Indicator Channel (PCFICH) on the non-primary carrier have a corresponding relation.

In this embodiment, the at least one carrier may include a primary carrier and a non-primary carrier, where the primary carrier is a carrier that preferentially carries the scheduling PDCCH, and the number of the primary carriers may be one or multiple. The base station and the UE may agree in advance or notify through signaling which carrier or carriers are the primary carrier, or the base station notifies the UE through semi-static signaling which carrier or carriers are the primary carrier, that is, the primary carrier is relatively fixed or slowly changed in a long period of time, for example, the base station and the UE may agree or notify through signaling that the carrier corresponding to the lowest frequency label is the primary carrier; alternatively, the primary carrier of the UE may be dynamically changed and may be determined based on the detection of the PDCCH by the UE, for example, the UE may regard the carrier corresponding to the lowest frequency number where the PDCCH is detected as the primary carrier. Regardless of the situation of dynamic change of the relatively fixed primary carrier or the primary carrier, since the primary carrier always preferentially carries the scheduling PDCCH, the value of the PCFICH on the primary carrier can be implicitly checked through the PDCCH carried on the primary carrier, and therefore, the value of the PCFICH on the primary carrier can be indicated without carrier indication bits, so that some carrier indication bits can be saved. And the carrier indication bit on the PDCCH corresponding to the non-primary carrier needs to indicate the value of the PCFICH on the non-primary carrier.

When the number of carriers carrying multiple independent PDCCHs is less than the number of carriers carrying PDSCH that the UE needs to monitor, there is a case where a certain PDCCH and PDSCH scheduled correspondingly to the PDCCH are not on the same carrier, that is, the PDCCH is separated from the PDSCH, that is, the PDCCH carries across carriers, and at this time, a plurality of carrier indication bits may be set in the PDCCH to indicate a correspondence between the PDCCH and the carrier on which the PDSCH scheduled correspondingly to the PDCCH is located. For example, if the carrier indicator bit is 2 bits, it may indicate 2²If the carrier indicator bit is 3 bits, it may indicate 2 states³The carrier indicator bit 4 bits, which indicates 8 states, may indicate 2⁴16 states. It will be understood by those skilled in the art that the carrier indication bit does not exclude other numbers of bits to indicate a lesser or greater number of states.

Under the condition that the PDCCH carries across carriers, because the PDCCH is separated from a carrier carrying the PDSCH correspondingly scheduled by the PDCCH, the value of the PCFICH on the carrier cannot be checked through the PDCCH, and therefore the value of the PCFICH on the carrier cannot be checked when error detection occurs. To solve this problem, in this embodiment, the carrier indication bit may be used to indicate not only the primary carrier and the non-primary carrier, but also a value of the PCFICH on the non-primary carrier. In this embodiment, the value of the PCFICH may be 1, 2, or 3, that is, in one case, the value of the PCFICH may respectively represent that the position of the PDCCH is the first 1, 2, or 3 symbols of the current subframe, and in another case, that is, in a small bandwidth, the value of the PCFICH may respectively represent that the position of the PDCCH is the first 2, 3, or 4 symbols of the current subframe.

If the carrier indicator bit can indicate the values of the PCFICHs on each non-primary carrier that the UE needs to monitor one by one, that is, the values of the 3 kinds of PCFICHs on each non-primary carrier can be indicated by at least the state of one carrier indicator bit, the values of the PCFICHs on each non-primary carrier can be accurately indicated.

If the state of the carrier indicator bit cannot indicate the PCFICH values on each non-primary carrier that the UE needs to monitor one by one, that is, the number of bits of the carrier indicator bit is small, and the state of the carrier indicator bit is not enough to indicate each value of the PCFICH on each non-primary carrier one by one, that is, when there is a one-to-many correspondence between the state of the carrier indicator bit and the PCFICH values, the PCFICH values on each non-primary carrier cannot be accurately indicated, at this time, two ways may be adopted, one of which is that some subsets of the set of values of the PCFICH values may be indicated by the carrier indicator bit, that is, the state of one carrier indicator bit may be used to indicate two or three possible values of the PCFICH, for example, the state of one carrier indicator bit may indicate that the corresponding PCFICH value is 2 or 3, and the number of the specific PCFICH values is what, the UE may detect from the indicated values, for example, it is detected from the above-mentioned value 2 or 3 whether the value of the specific PCFICH is 2 or 3; secondly, the number of bits of the carrier indication bits may be increased, for example, when the number of bits of the carrier indication bits is 3, 8 states may be represented, and when the number of bits of the carrier indication bits is 4, 16 states may be represented, so that the larger the number of bits of the carrier indication bits is, the larger the number of values of the PCFICH that can be accurately indicated is.

Step 302, sending the at least one PDCCH to a user equipment, so that the user equipment can obtain a value of the PCFICH on the non-primary carrier according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier.

Specifically, the base station may send at least one PDCCH to the UE, and after receiving the PDCCH, the UE may determine a value of the PCFICH on the non-primary carrier according to a state of the carrier indicator bit. For the case that the state of the carrier indicator bit and the value of the PCFICH on each non-primary carrier are in a many-to-one or one-to-one correspondence relationship, the UE may exactly know the value of the PCFICH, for example, the carrier indicator bit is 3 bits, the base station and the UE may agree in advance or notify the carrier indicator bit has 3 bits through signaling, and the state 010 of the carrier indicator bit may be used to indicate that the PDCCH corresponds to the 3 rd non-primary carrier, and simultaneously used to indicate that the value of the PCFICH on the 3 rd non-primary carrier is 2, that is, the one-to-one correspondence relationship between the state 010 of the carrier indicator bit and the value of the PCFICH on the 3 rd non-primary carrier is 2. Correspondingly, when receiving the PDCCH, the UE can know that the PDCCH is scheduled with the PDSCH on the 3 rd non-primary carrier correspondingly according to the state 010 of the carrier indication bit, and the PDCCH occupies 2 symbols, so that the UE can know that the data start position of the PDSCH on the 3 rd non-primary carrier is the 3 rd symbol, and thus the UE can start to extract the PDSCH from the 3 rd symbol.

Or both states 001 and 011 of the carrier indicator bit may be used to indicate that the PDCCH corresponds to the 3 rd non-primary carrier, and simultaneously used to indicate that the value of the PCFICH on the 3 rd non-primary carrier is 2, that is, a many-to-one correspondence relationship exists between the states 001 and 011 of the carrier indicator bit and the value of the PCFICH on the 3 rd non-primary carrier being 2, when the UE receives the PDCCH, the UE may know that the PDCCH corresponds to the PDSCH on the 3 rd non-primary carrier scheduled according to the state of the carrier indicator bit, and the PDCCH occupies 2 symbols, and then the UE may know that the data start position of the PDSCH on the 3 rd non-primary carrier is the 3 rd symbol, so that the UE may start to extract the PDSCH from the 3 rd symbol.

For the case that the carrier indicator bit and the value of the PCFICH are in a one-to-many correspondence relationship, the UE cannot exactly know the value of the PCFICH on the corresponding non-primary carrier through the carrier indicator bit. If the base station and the UE agree in advance or the state of a certain carrier indicator bit or the state of some carrier indicator bits notified through signaling indicates a subset of all values of the PCFICH of a non-primary carrier, when the UE receives the PDCCH, the UE may perform detection in the subset for a case that the state of a certain carrier indicator bit or the state of some carrier indicator bits indicates a subset of all values of the PCFICH, so as to determine which value of the PCFICH is specifically the subset, and for a case that the states of the remaining carrier indicator bits and the values of the PCFICH correspond to each other in a many-to-one or one-to-one manner, the UE may accurately know the value of the PCFICH.

Still taking the carrier indicator bit as 3 bits, for example, the base station and the UE may agree in advance or signal that the carrier indicator bit has 3 bits, and a state 011 of the carrier indicator bit therein may be used to indicate that the PDCCH corresponds to the 3 rd non-primary carrier, and at the same time, the value of PCFICH on the 3 rd non-primary carrier is indicated to be 2 or 3, then the UE can know that the PDCCH is scheduled with the PDSCH on the 3 rd non-primary carrier correspondingly according to the state 011 of its carrier indicator bits, and the PDCCH occupies 2 or 3 symbols, the UE can know whether the value of the PCFICH is specifically 2 or 3 by detecting the value of the PCFICH is 2 or 3, thereby determining a data start position of the PDSCH on the 3 rd non-primary carrier as the 3 rd symbol or the 4 th symbol so that the UE can extract the PDSCH starting from the 3 rd symbol or the 4 th symbol. For the case of increasing the number of bits of the carrier indicator bit, the state of the carrier indicator bit that can be used is more, and the correspondence between the state of the carrier indicator bit and the value of the PCFICH may be many-to-one, one-to-one, or one-to-many, and the specific correspondence may be determined according to the number of carriers to be indicated.

In a preferred case, when the state of the carrier indicator bit is sufficient, a one-to-one correspondence between the state of the carrier indicator bit and the value of the PCFICH may be preferentially adopted, and when the state of the carrier indicator bit is insufficient, a non-one-to-one correspondence between the state of the carrier indicator bit and the value of the PCFICH may be adopted, or the number of bits of the carrier indicator bit may be increased.

In this embodiment, the value of the PCFICH on the non-primary carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indicator bit of the PDCCH, and even if the PDCCH is carried on other carriers, the UE can know the PCIFICH on the non-primary carrier corresponding to the PDSCH scheduled by the UE through the carrier indicator bit on the PDCCH, so that the accuracy of the UE in checking the value of the PCFICH is improved, and then the PDSCH can be demodulated from the correct starting position information where the PDSCH is placed, thereby effectively reducing the false detection rate of the PDSCH and avoiding subsequent unnecessary feedback retransmission.

In another embodiment of the signaling processing method of the present invention, when 2^NWhen the number of carriers of the non-primary carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: the state of the carrier indicator bit of the PDCCH corresponding to each non-primary carrier in the non-primary carriers and the value of the PCFICH on each non-primary carrier are in a one-to-one correspondence relationship, or in a many-to-one correspondence relationship.

For example, there are 3 possible values of the PCFICH value, and in order to accurately indicate each value of the PCFICH value on each non-primary carrier, each non-primary carrier needs to allocate at least 3 states of carrier indication bits. For example, when the number of carrier indicator bits of the PDCCH is 2, that is, states 00, 01, 10, and 11 of 4 carrier indicator bits can be represented, the state 00 of the carrier indicator bit can be used to indicate the primary carrier, and the states 01, 10, and 11 of the carrier indicator bit can be used to indicate the non-primary carrier. Therefore, in the case of such an accurate indication, the number of the non-primary carriers can only be 1, that is, 3 values of the PCFICH values on the non-primary carriers can be represented by 01, 10, and 11 in the states of the carrier indication bits, that is, a one-to-one correspondence relationship between the states of the carrier indication bits for indicating the non-primary carriers and the PCFICH values of the non-primary carriers. When the number of carrier indicator bits of the PDCCH is 3, that is, the states 000, 001, 010, 011, 100, 101, 110 and 111 of 8 carrier indicator bits can be represented, the number of carriers that the UE needs to monitor is 3, and it is assumed that the number of primary carriers is 1, in order to be able to indicate each of the values of PCFICH on 2 non-primary carriers with certainty, at least 3 states of carrier indicator bits need to be allocated to 2 non-primary carriers, therefore, in this case, for example, the states 000 to 001 of the carrier indicator bits may be used to indicate a primary carrier, the states 010 to 100 of the carrier indicator bits may be used to indicate one non-primary carrier, and the states 010 to 100 of the three carrier indicator bits may be used to indicate the value of the corresponding PCFICH, the states 101 to 111 of the carrier indicator bits may be used to indicate another non-primary carrier, and the states 101 to 111 of the three carrier indicator bits may be used to indicate the value of the corresponding fich, namely, the state of the carrier indication bit for indicating the non-primary carrier and the value of the PCFICH of the non-primary carrier are in one-to-one correspondence; or, the state 000 of the carrier indicator bit may be used to indicate a primary carrier, the states 001 to 100 of the carrier indicator bit may be used to indicate a non-primary carrier, and in the states 001 to 100 of the four carrier indicator bits, 001 and 010 may be used to indicate that the value of the corresponding PCFICH is 1, 011 may be used to indicate that the value of the corresponding PCFICH is 2, 100 may be used to indicate that the value of the corresponding PCFICH is 3, and the states 101 to 111 of the carrier indicator bit may be used to indicate another non-primary carrier, and the states 101 to 111 of the three carrier indicator bits may be used to indicate the values of the corresponding PCFICH, that is, a one-to-one correspondence or a many-to-one correspondence between the states of the carrier indicator bit indicating the non-primary carrier and the values of the PCFICH of the non-primary carrier.

For another example, when the number of carrier indicator bits of the PDCCH is 3, that is, states 000, 001, 010, 011, 100, 101, 110 and 111 of 8 carrier indicator bits can be represented, the number of carriers that the UE needs to monitor is 3, and assuming that the number of primary carriers is 1, in order to be able to indicate each value of the PCFICH values on 2 non-primary carriers with certainty, at least 3 states of carrier indicator bits need to be allocated to 2 non-primary carriers, therefore, in this case, for example, the state 000 of the carrier indicator bit may be used to indicate a primary carrier, the states 001 to 100 of the carrier indicator bit may be used to indicate one non-primary carrier, and of the states 001 to 100 of the four carrier indicator bits, the states 001, 011 and 100 of the carrier indicator bit may be used to indicate the value of the corresponding PCFICH, respectively, and the state 001 of the carrier indicator bit may be redundant when indicating the state of the PCFICH, and indicating another non-primary carrier by using the states 101-111 of the carrier indication bits, wherein the states 101-111 of the three carrier indication bits can be respectively used for indicating the values of the corresponding PCFICHs, namely, the states of the carrier indication bits used for indicating the non-primary carrier and the values of the PCFICHs of the non-primary carrier are in one-to-one correspondence. Or, the state 000 of the carrier indicator bit indicates the primary carrier, the states 010 to 100 of the carrier indicator bit indicate a non-primary carrier, and the states 010 to 100 of the three carrier indicator bits may be respectively used to indicate the value of the corresponding PCFICH, while the state 001 of the carrier indicator bit is redundant, the state 101 to 111 of the carrier indicator bit indicates another non-primary carrier, and the states 101 to 111 of the three carrier indicator bits may be respectively used to indicate the value of the corresponding PCFICH, that is, the state of the carrier indicator bit indicating the non-primary carrier corresponds to the value of the PCFICH of the non-primary carrier in a one-to-one correspondence, in this case, the state 001 of the carrier indicator bit does not indicate either the carrier or the PCFICH in the carrier, so the state 001 of the carrier indicator bit may also be completely redundant.

For another example, the state 000 of the carrier indicator bit may be used to indicate a primary carrier, the states 001 to 100 of the carrier indicator bit may be used to indicate that one non-primary carrier is indicated, and in the states 001 to 100 of the four carrier indicator bits, 001 and 010 may be used to indicate that the value of the corresponding PCFICH is 1, 011 may be used to indicate that the value of the corresponding PCFICH is 2, 100 may be used to indicate that the value of the corresponding PCFICH is 3, and the states 101 to 111 of the carrier indicator bit may be used to indicate another non-primary carrier, and the states 101 to 111 of the three carrier indicator bits may be respectively used to indicate the values of the corresponding PCFICH, that is, a one-to-one or many-to-one correspondence relationship between the states of the carrier indicator bit indicating the non-primary carrier and the PCFICH of the non-primary carrier.

It is to be understood that the allocation of the carrier indication bits is not limited to the above form, and those skilled in the art may arbitrarily allocate the primary carrier and the non-primary carrier if the above conditions are satisfied.

In another embodiment of the signaling processing method of the present invention, when 2^NWhen the number of carriers of the non-primary carrier is less than 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: in the non-primary carriers, the state of a carrier indication bit in the PDCCH corresponding to at least one non-primary carrier and the value of the PCFICH on the non-primary carrier are in a one-to-many correspondence relationship.

For example, if there are 3 non-primary carriers, 1 primary carrier, and the number of bits of the carrier indicator bit is 3, 8 states can be represented. If each value of the PCFICH value on each non-primary carrier can be indicated exactly, at least 3 × 3 — 9 states are required, and in this case, the carrier indication bits are 8 states, so that each value of the PCFICH value on each non-primary carrier cannot be indicated exactly. In this case, the indication may be preferentially performed in a one-to-one relationship between the state of the carrier indicator bit indicating the non-primary carrier and the value of the corresponding PCFICH, and the indication may be performed in a one-to-many relationship between the state of the carrier indicator bit indicating the non-primary carrier and the value of the corresponding PCFICH when the usage is insufficient. For example, the state 000 of the carrier indicator bit may be used to indicate the primary carrier, and the states of the remaining carrier indicator bits may be used to indicate the non-primary carrier, where the states 001-011 of the carrier indicator bit indicate the 1 st non-primary carrier, the states 100-110 of the carrier indicator bit indicate the 2 nd non-primary carrier, and the state 111 of the carrier indicator bit indicates the 3 rd non-primary carrier. Therefore, a one-to-one correspondence relationship may be adopted between the values of the PCFICH on the 1 st non-primary carrier and the 2 nd non-primary carrier and the states of the 3 carrier indicator bits, that is, the values of the PCFICH are exactly indicated by the states of the carrier indicator bits, and for the 3 rd non-primary carrier, the state 111 of the carrier indicator bits may be used to indicate three values 1, 2, or 3 of the values of the PCFICH, that is, a one-to-many correspondence relationship is adopted between the values of the PCFICH on the 3 rd non-primary carrier and the states of the 3 carrier indicator bits, and the specific value of the PCFICH may be determined in a manner of self-detection by the UE.

The signaling processing method provided by the embodiment of the present invention is described in detail below with several specific examples in the case of having a primary carrier. In the following examples, the number of bits of the carrier indicator bit is 3, that is, 8 states 000, 001, 010, 011, 100, 101, 110, and 111 can be represented, and the maximum number of carriers of the UE in carrier aggregation is 5, and 1 of the carriers is a primary carrier.

Example 1, fixed Main Carrier, UE monitors 1 Carrier

For the case where the UE is informed to monitor only 1 carrier, the PDCCH may use the existing format length, i.e. the above carrier indication bit is not needed.

Example 2 fixed Main Carrier, UE monitors 2 carriers

For the case that the UE is notified to monitor 2 carriers, for example, the base station and the UE may agree or notify through signaling, and may indicate the primary carrier C1 with the states 0 to 4 of the carrier indication bit, since the value information of the PCFICH on the primary carrier does not need to be indicated, there are 5 state redundancies of the states 0 to 4 of the carrier indication bit; the states 5 to 7 of the carrier indicator bits may indicate the non-primary carrier C2, and the states of the 3 carrier indicator bits are used to indicate 3 values of the PCFICH value, for example, the state 5 of the carrier indicator bit may indicate that the PCFICH value on the non-primary carrier C2 is 1, the state 6 of the carrier indicator bit may indicate that the PCFICH value on the non-primary carrier C2 is 2, and the state 7 of the carrier indicator bit may indicate that the PCFICH value on the non-primary carrier C2 is 3. It is understood that the above indication method may also adopt other carrier indication bit allocation manners.

Example 3 fixed host Carrier, UE monitors 3 carriers

For the case that the UE is notified to monitor 3 carriers, for example, the primary carrier C1 can be indicated by the status 0-1 of the carrier indication bit, and there are 2 status redundancies of 0-1; indicating the non-main carrier C2 by using the states 2-4 of the carrier indication bits, and multiplexing the 3 values of the PCFICH values of the 3 carrier indication bits indicating the non-main carrier C2; and indicating the non-primary carrier C3 by using the states of the carrier indication bits of 5-7, and indicating 3 values of the PCFICH value of the non-primary carrier C3 by using the states of the 3 carrier indication bits.

Example 4 fixed Main Carrier, UE monitors 4 carriers

When the UE is notified to monitor 4 carriers (including 1 primary carrier and 3 non-primary carriers), the carrier indicator bit is 3 bits, and the state of the carrier indicator bit that can be represented is 8 carriers, which is less than 3 times the number of carriers of the non-primary carrier, and therefore the state of the carrier indicator bit at this time cannot accurately indicate the value of each PCFICH on each non-primary carrier. For this case, a one-to-many correspondence relationship may be set between a state of at least one carrier indicator bit in the states of the carrier indicator bits for indicating the non-primary carrier and a value of the PCFICH of the non-primary carrier. For example, in this example, the granularity of the status indication of some carrier indicator bits may be increased, and the carrier indicator bit status 0 indicates the primary carrier C1, the carrier indicator bits status 1-3 indicates the non-primary carrier C2, and indicates 3 values of the PCFICH value of the non-primary carrier C2; the state 4-5 of the carrier indication bit indicates the non-primary carrier C3, the state 4 of the carrier indication bit indicates that the value of the PCFICH of the non-primary carrier C3 is 1, and the state 5 of the carrier indication bit indicates that the value of the PCFICH of the non-primary carrier C3 is 2 or 3; the state 6-7 of the carrier indication bit indicates the non-primary carrier C4, and the state 6 of the carrier indication bit indicates that the value of the PCFICH of the non-primary carrier C4 is 1, and the state 7 of the carrier indication bit indicates that the value of the PCFICH of the non-primary carrier C4 is 2 or 3. For the case that the value of the PCFICH indicates the state of multiple carrier indicator bits, for example, the state 7 of the carrier indicator bit is used to indicate that the value of the PCFICH of the non-primary carrier C4 is 2 or 3, the UE can perform detection in the case that the value of the PCFICH is 2 or 3, thereby reducing the detection range and improving the detection accuracy.

For example, for a non-primary carrier that cannot be indicated, the PCFICH values corresponding to the non-primary carrier may be indicated as the full sets 1, 2, and 3, that is, the UE may detect whether the PCFICH value is 1, 2, or 3. At this time, the channel carrier indication bit of the UE is better, and even if more values are indicated, the value error detection rate of the PCFICH is lower.

Example 5 fixed Main Carrier, UE monitors 5 carriers

When the UE is notified to monitor 5 carriers (including 1 primary carrier and 4 non-primary carriers), the carrier indicator bit is 3 bits, and the state of the carrier indicator bit that can be represented is 8, which is less than 3 times the number of carriers of the non-primary carrier, and therefore the carrier indicator bit at this time cannot exactly indicate the value of each PCFICH on each non-primary carrier. For this case, a one-to-many correspondence relationship may be set between a state of at least one carrier indicator bit in the states of the carrier indicator bits for indicating the non-primary carrier and a value of the PCFICH of the non-primary carrier. For example, in this example, the carrier indicator bit state 0 may be used to indicate the primary carrier C1, the carrier indicator bits states 1-3 may be used to indicate the non-primary carrier C2, and indicate 3 values of the PCFICH value of the non-primary carrier C2; the state 4-5 of the carrier indication bit indicates the non-primary carrier C3, the state 4 of the carrier indication bit indicates that the value of the PCFICH of the non-primary carrier C3 is 1, and the state 5 of the carrier indication bit indicates that the value of the PCFICH of the non-primary carrier C3 is 2 or 3; state 6 of the carrier indicator bit indicates the non-primary carrier C4, and state 6 of the carrier indicator bit indicates that the PCFICH of the non-primary carrier C4 takes values of 1, 2, and 3, and state 7 of the carrier indicator bit indicates the non-primary carrier C5, and indicates that the PCFICH of the non-primary carrier C5 takes values of 1, 2, and 3. For the condition that the value of the PCFICH indicates the states of a plurality of carrier indication bits, the UE can detect by itself, and the subset of the value set of the PCFICH is indicated, so that the detection range is narrowed, and the detection accuracy is improved. For the case that the value indicating the PCFICH is the full set 1, 2, and 3, that is, no indication is given, the UE can detect the value of the PCFICH as 1, 2, or 3 by itself.

Since the carrier indication bits are set to 3 bits in both the above examples 4 and 5 to indicate the state of 8 carrier indication bits, the number of carriers that can be accurately indicated does not exceed 3, and therefore, in order to increase the number of carriers that can be accurately indicated, the present embodiment may also increase the number of carrier indication bits, for example, the number of carrier indication bits is set to 4, at this time, 16 carrier indication bits can be represented, and therefore, under the condition of fixing 1 primary carrier, the number of carriers that can be accurately indicated may reach 5, that is, in the above examples 1 to 5, each value of the values of the PCFICH of all non-primary carriers can be accurately indicated. Therefore, when monitoring 1-3 carriers by UE, the carrier indication bit can be set to be 3 bits, so that the values of the PCFICHs of the 1-3 carriers can be accurately indicated, and when monitoring 4-5 carriers by UE, the carrier indication bit can be set to be 4 bits, so that the values of the PCFICHs of 4-5 carriers can be accurately indicated, and under the condition of the situation indication mode, the PDCCH can have two format lengths under the condition of increasing the carrier indication bit. Or, for the condition that the UE monitors 1 to 5 carriers, the carrier indication bit may be set to 4 bits, so as to accurately indicate the value of the PCFICH of 1 to 5 carriers.

In addition, for the case that the primary carrier may change dynamically, the concept of the primary carrier only needs to be generalized to determine the primary carrier based on the detection of the PDCCH by the UE, that is, the PDCCH is not necessarily put on which carrier or carriers preferentially, for example, the carrier with the lowest frequency label on which the PDCCH is detected by the UE may be regarded as the primary carrier, information of the value of the PCFICH on the primary carrier does not need to be indicated, and implicit check may be performed through the PDCCH on the primary carrier.

For example, assuming that all PDCCHs of the UE are scheduled on carrier C1, the UE searches for the PDCCH from carrier C1, that is, carrier C1 is equivalent to the primary carrier, because the value of the PCFICH of C1 does not need to be indicated, the state 0-1 of the carrier indication bit may indicate carrier C1 and is redundant, and the states 2-4 and 5-7 of the carrier indication bit may indicate carrier C2 and carrier C3, and indicate 3 values of the PCFICH of carriers C2 and C3, respectively; similarly, assuming that all PDCCHs of the UE are scheduled on the carrier C2, the UE searches for the PDCCH from the carrier C2, that is, the carrier C2 is equivalent to the primary carrier, since the value of the PCFICH of the carrier C2 does not need to be indicated, and the PDCCH is not detected on the carrier C1, the state 0-1 of the carrier indication bit may indicate the carrier C2 and is redundant, and the states 2-4 and 5-7 of the carrier indication bit may respectively indicate the carrier C1 and the carrier C3, and simultaneously indicate 3 values of the PCFICH on the carrier C1 and the carrier C3; in the same way, assuming that all PDCCHs of the UE are scheduled on the carrier C3, the UE searches for a PDCCH from the carrier C3, that is, the carrier C3 is equivalent to the primary carrier, since the value of the PCFICH of the carrier C3 does not need to be indicated, and no PDCCH is detected on the carrier C1 and the carrier C2, the states 0 to 1 of the carrier indication bits may indicate C3 and are redundant, and the states 2 to 4 and 5 to 7 of the carrier indication bits may respectively indicate the carrier C1 and the carrier C2, and simultaneously indicate 3 values of the PCFICH on the carrier C1 and the carrier C2.

In the above embodiment of the present invention, the carrier indication bit of the PDCCH is used to indicate the value of the PCFICH on the non-primary carrier where the PDSCH scheduled by the PDCCH is located, and even if the PDCCH is carried on other carriers, the UE can obtain the PCIFICH on the non-primary carrier corresponding to the PDSCH scheduled by the UE through the carrier indication bit on the PDCCH, so that the accuracy of the UE in checking the value of the PCFICH is improved, and further the PDSCH can be demodulated from the correct initial position information where the PDSCH is placed, thereby effectively reducing the false detection rate of the PDSCH and avoiding the subsequent unnecessary feedback retransmission.

Fig. 4 is a flowchart of another signaling processing method according to an embodiment of the present invention, and as shown in fig. 4, the method according to the embodiment may include:

step 401, generating at least one physical downlink control channel PDCCH corresponding to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in each PDCCH of the at least one PDCCH and a value of a physical control format indicator channel PCFICH on the carrier corresponding to the each PDCCH;

step 402, sending the at least one PDCCH to a user equipment, so that the user equipment can obtain a value of the PCFICH on a carrier corresponding to each PDCCH according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH.

In this embodiment, the carrier indication bit of the PDCCH is used to indicate the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located, and in the absence of the primary carrier, the value of the PCFICH may be indicated by increasing the indication granularity, that is, using one carrier indication bit to indicate a subset of the value set of the PCFICH, and by increasing the number of bits of the carrier indication bit, so that even if the PDCCH is carried on another carrier, the UE may also know the PCIFICH on the carrier corresponding to the PDSCH scheduled by the UE through the carrier indication bit on the PDCCH, thereby improving the accuracy of value detection of the PCFICH by the UE, and further demodulating the PDSCH from the correct initial position information where the PDSCH is placed, effectively reducing the false detection rate of the PDSCH, and avoiding subsequent unnecessary feedback retransmission.

In another embodiment of the signaling processing method of the present invention, when 2^NWhen the number is more than or equal to 3 times of the number of the carriers of the at least one carrier, wherein N is the carrier fingerThe bit number of the bit, the correspondence may include: the state of the carrier indicator bit of the PDCCH corresponding to each carrier of the at least one carrier and the value of the PCFICH on each carrier are in a one-to-one correspondence relationship, or in a many-to-one correspondence relationship. When 2 is in^NWhen the number of carriers of the at least one carrier is less than 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: in the at least one carrier, a one-to-many correspondence relationship exists between the state of a carrier indicator bit in the PDCCH corresponding to the at least one carrier and the value of the PCFICH on the one carrier.

Specifically, since the primary carrier is not defined in this embodiment, the PDCCH may be flexibly placed on one or several carriers, and specifically, which carrier carries the PDCCH is not fixed, and it cannot be determined which carrier has the PCFICH whose value can be implicitly checked by the PDCCH without indication, so that if the value of the PCFICH on each carrier is accurately indicated, at least a state of 3 carrier indication bits needs to be reserved for each carrier.

Assuming that the number of carriers to be monitored by the UE is 5, and the carrier indicator bit of the PDCCH is 4 bits, the state of 15 carrier indicator bits needs to be reserved, and the state of the carrier indicator bit of the PDCCH is 16, which is greater than 3 times the number of carriers of the at least one carrier, that is, 5 carriers, at this time, the state of the carrier indicator bit of the PDCCH can accurately indicate each value of the PCFICH values on each carrier, in this case, one possible scheme is that the state of the carrier indicator bit is 0-2 to indicate the carrier C1, and is used to indicate the values of 3 PCFICHs; the state 3-5 of the carrier indication bit indicates a carrier C2 and is used for indicating the values of 3 PCFICHs; the state 6-8 of the carrier indication bit indicates the carrier C3 and is used for indicating the values of 3 PCFICHs of the carrier C3; the state of the carrier indication bit is 9-11, the carrier C4 is indicated, and the carrier C4 values of 3 PCFICHs are indicated; the state 12-15 of the carrier indicator bit indicates the carrier C5, and is used to indicate the values of 3 PCFICHs of the carrier C5, where the states 12 and 13 of the carrier indicator bit may indicate that the value of the PCFICH of the carrier C5 is 1, the state 14 of the carrier indicator bit may indicate that the value of the PCFICH of the carrier C5 is 2, and the state 15 of the carrier indicator bit may indicate that the value of the PCFICH of the carrier C5 is 3. Therefore, in this case, there is a one-to-one or many-to-one correspondence between the carrier indicator bits and the values of the PCFICH of the at least one carrier, such as a many-to-one correspondence between the values of the PCFICH and the values of 12 and 13 in this embodiment, that is, the states of two carrier indicator bits correspond to the correspondence between the values of one PCFICH, such as the states of the remaining carrier indicator bits in this embodiment, and the values of the PCFICH are one-to-one correspondence.

Assuming that the number of carriers to be monitored by the UE is 3 and the carrier indicator bit of the PDCCH is 3 bits, the state of 9 carrier indicator bits needs to be reserved, and at this time, the state of the carrier indicator bit of the PDCCH cannot accurately indicate each of the values of the PCFICH on each carrier, in this case, one possible scheme is that the state of the carrier indicator bit is 0-2 to indicate the carrier C1 and is used to indicate the values of 3 PCFICHs; the state 3-5 of the carrier indication bit indicates a carrier C2 and is used for indicating the values of 3 PCFICHs; the state 6-7 of the carrier indication bit indicates the carrier C3, the state 6 of the carrier indication bit indicates that the value of the PCFICH is 1, the state 7 of the carrier indication bit indicates that the value of the PCFICH is 2 or 3, and specifically, which one of the value of the PCFICH is 2 or 3, is detected by the UE. Therefore, in this case, a one-to-many correspondence relationship exists between the state of at least one of the carrier indicator bits and the value of the PCFICH, for example, a one-to-two correspondence relationship exists between the state 7 of the carrier indicator bit and the value 2 or 3 of the PCFICH.

In this embodiment, the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indicator bit of the PDCCH, and in the absence of the primary carrier, the value of the PCFICH may be indicated by increasing the indication granularity, that is, a subset of the value set of the PCFICH is indicated by using the state of the carrier indicator bit, and by increasing the number of bits of the carrier indicator bit, therefore, even if the PDCCH is carried on another carrier, the UE may also know the PCIFICH on the carrier corresponding to the PDSCH scheduled by using the carrier indicator bit on the PDCCH, thereby improving the accuracy of value detection of the PCFICH by the UE, and further demodulating the PDSCH from the correct initial position information where the PDSCH is placed, effectively reducing the false detection rate of the PDSCH, and avoiding subsequent unnecessary feedback retransmission.

In another embodiment of the signaling processing method of the present invention, the correspondence relationship may include: the state of a carrier indication bit in the cross-carrier-borne PDCCH indicates that the value of the PCFICH on the carrier on which the cross-carrier-borne PDCCH is located is the same as or different from the value of the PCFICH on the carrier on which the PDSCH corresponding to the cross-carrier-borne PDCCH is located.

Specifically, in this embodiment, no limitation is made on the value of the PCFICH transmitted by the base station, and some limitations are made on the indication of the value of the PCFICH, so as to save the state of the carrier indication bit, for example, to indicate whether the value of the PCFICH on the carrier not carrying the PDCCH of a certain UE is equal to the value of the PCFICH on the carrier carrying the PDCCH.

The present embodiment is described by taking two carriers as an example. The PDSCH of the carrier C2 is indicated by the PDCCH carried across carriers, that is, the PDCCH corresponding to the PDSCH on the carrier C2 is carried on the carrier C1, and if the PDCCH carried on the carrier C1 is detected, the value of the PCFICH on the carrier C1 can be known. For example, the following schemes can be adopted.

1) Applying the carrier indicator bit of the PDCCH carried on the carrier C1 and corresponding to the PDSCH on the carrier C2 to indicate whether the value of the PCFICH on the carrier C2 is equal to the known value of the PCFICH on the carrier C1, that is, if the value of the PCFICH on the carrier C1 is 2 and the carrier indicator bit of the PDCCH carried on the carrier C1 and corresponding to the PDSCH on the carrier C2 indicates that the two values are equal, the value of the PCFICH on the carrier C2 is also 2; otherwise, if the two are indicated to be unequal, the PCFICH on the carrier C2 may take a value of 1 or 3, and the value of the PCFICH specifically takes a value of 1 or 3, which can be detected by the UE itself;

when the value of the PCFICH on the carrier C1 is 2, and the carrier indicator bit of the PDCCH corresponding to the carrier C2 indicates that the value of the PCFICH on the carrier C1 is not equal to the value of the PCFICH on the carrier C2, but the UE detects that the value of the PCFICH on the carrier C2 is equal, that is, it is known that the value of the PCFICH on the carrier C2 is 2, the UE may adopt two processing methods:

a) the UE confirms that the value of the PCFICH on the carrier C1 is 2, and the value of the PCFICH on the indicated carrier C2 is not equal to the value of the PCFICH on the carrier C1, then the UE performs detection only in the set of the PCFICH values 1 and 3 at this time, and compared with the case that the UE needs to detect all the 3 kinds of PCFICH values, since the possible value of the PCFICH value that may need to be detected is reduced, the detection accuracy can be improved.

b) The UE detects that the value of the PCFICH of C2 is equal to that of C1, but the state of the carrier indicator bit of the PDCCH corresponding to carrier C2 indicates that the value of the PCFICH of carrier C1 is not equal to that of the PCFICH of carrier C2, the UE determines that the check is erroneous, the UE can abandon the data packet, and then the ACK/NACK is not fed back to the base station, and the base station can consider that the PDCCH corresponding to the data packet is missed, so that the same data packet is rescheduled, and the influence of subsequent feedback retransmission combination caused by error detection of the value of the PCFICH is avoided.

2) Indicating that the value of the PCFICH on the carrier not carrying the PDCCH of a certain UE is some subsets of 3 values, when the state of the carrier indicator bit is sufficient, the carrier indicator bit may indicate a specific value of the 3 values of the value of the PCFICH on each carrier, and indicating by using a one-to-one or many-to-one correspondence between the state of the carrier indicator bit and the value of the PCFICH of the at least one carrier; when the state of the carrier indicator bit is not sufficient, a one-to-many correspondence relationship between the state of at least one carrier indicator bit in the state of the carrier indicator bit and the value of the PCFICH of the at least one carrier may be used for indicating. For example, the PCFICH may be indicated to be 1 by using a state 0 of the carrier indicator bit, and the PCFICH may be indicated to be one of 2 and 3 by using a state 1 of the carrier indicator bit, and the UE may perform self-detection in 2 and 3. Therefore, in this embodiment, the states of the two carrier indicator bits may be used to indicate whether the PCFICH is equal in value or not, or indicate some subsets, and therefore, the state of the carrier indicator bit is 2n, where n is the number of carriers, and it can be seen that when the carrier indicator bit is 3 bits, that is, 8 states, at most 4 carriers may be supported, and if the number of carriers exceeds the number of carriers, the indication manner described in the above embodiment may be used to indicate.

In addition, the PDCCH corresponding to the primary carrier does not add a carrier indication bit, and other PDCCHs need to add a carrier indication bit of 3 bits, so that the UE needs to detect two format lengths (the format lengths of the scheduled primary carrier and the non-primary carrier are different) when performing PDCCH detection.

Based on the above assumption that the number of the main carriers is 1, when the number of the carrier indication bits is 3, 2 bits (assuming that the maximum number of the carriers aggregated by the UE is 5) of the carrier indication bits may indicate PDSCH scheduling of 4 non-main carriers (the scheduling of the main carriers is identified by a PDCCH without adding the carrier indication bits), and at this time, the remaining 1 bit may be used to indicate that the carrier indication bit of the cross-carrier-borne PDCCH is used to indicate that the value of the PCFICH of the carrier on which the cross-carrier-borne PDCCH is located is the same as or different from the value of the PCFICH of the carrier on which the PDSCH corresponding to the cross-carrier-borne PDCCH is located; or an indication of other subsets.

This scheme is at the cost of PDCCHs of different format lengths, so that some subset indications are not limited by carrier indication bits due to the large number of carriers, such as indicating 4 carriers at most in scheme 2) above, and this scheme can support 5 carriers because the PDCCH on the primary carrier does not need to load carrier indication bits.

In another embodiment of the signaling processing method of the present invention, the value of the PCFICH transmitted by the base station may be limited to a certain extent, and the following schemes may be specifically adopted:

scheme 1:

the method includes the steps that a base station is limited to transmit a subset of 3 values, such as {1, 2, 3} or {1, 2} or {2, 3} or {1, 3} of a value of the PCFICH, on a carrier possibly used for cross-carrier indication, so that UE indicated by a cross-carrier PDCCH can acquire limitation on the value of the PCFICH, for example, the limitation can be predefined for a standard or can be configured through high-level semi-static signaling, and therefore the UE only needs to detect the value of the PCFICH in the limited subset of the value of the PCFICH, so that the value needing to be checked can be reduced, and detection performance is improved; for the UE in the LTE network or the UE in the LTE-a network that is not indicated by the cross-carrier PDCCH, the configuration information is not known, so the UEs can also normally detect according to the condition that the value of the PCFICH is 3 values without being affected.

Scheme 2:

because the value of the PCFICH occupies two symbols, the value of the PCFICH may have 4 values, the scheme may employ the 4 th value (UE in the LTE network cannot recognize) that the existing PCFICH value is not used, together with some value of the current PCFICH value, such as {1, 4} or {2, 4} or {3, 4}, and these indicated subsets may only be known by the UE in the LTE-a network or the UE indicated by the cross-carrier-borne PDCCH, so as to indicate some possible actual values of the PCFICH value, such as a fixed value of some PCFICH, or indicate a relative value with the current value of the PCFICH, or some subsets, and the like.

Scheme 3:

and jointly using the value limitation of the transmitted PCFICH by the base station and the carrier indication bit of the PDCCH. For example, the set of values of the PCFICH that the base station restricts transmission is {2, 3}, and further indicates which value of 2 and 3 is the value by the state of the carrier indicator bit of the PDCCH, for example, the state 010 of the carrier indicator bit of 3 bits is used to indicate that the current value of the PCFICH is 2 in the set, so as to know that the corresponding PDCCH occupies 2 symbols, and further know that the data start position of the PDSCH starts from the 3 rd symbol.

In the above embodiments of the signaling processing method of the present invention, the status of the carrier indicator bit is used to indicate the value of the PCFICH, in fact, some idle or padding bits may also exist in the PDCCH, and these idle or padding bits may also be used to indicate the value of the PCFICH, or these idle or padding bits and the carrier indicator bit of the PDCCH are combined together to indicate the value of the PCFICH.

For example, a PDCCH in an LTE network has two formats 0 and 1, the signaling lengths of the two formats are required to be equal, but in some cases, the signaling length may be different by several bits, and in this case, the PDCCH in the format with the smaller length is padded with "0", so that the signaling lengths of the PDCCHs in the two formats are equal; some formats of PDCCH in LTE-a system may also be the same signaling length, and some padding bits may exist, and these padding bits can be used to indicate the value of PCFICH.

In addition, in the above embodiment, after the value of the PCFICH is indicated by using the carrier indicator bit of the PDCCH or some padding bits that may exist in the PDCCH, some carrier indicator bits that may be used may also exist, and these redundant carrier indicator bits may also be used for other purposes. The aforementioned PDCCH belongs to the category of a downlink scheduling grant (DL _ grant), and an uplink scheduling grant (UL _ grant) does not need to indicate the value of the PCFICH.

For example, some or some carrier indication bits may be fixed as Cyclic Redundancy Check (CRC) bits in the carrier indication bits of the PDCCH, so as to reduce the false alarm probability of the PDCCH. For example, assuming that states 0-4 of carrier indicator bits of the carrier indicator bits can indicate the primary carrier C1, the states of the 5 redundant carrier indicator bits can be fixed to be the state 0 of the carrier indicator bit, so that when the UE receives the PDCCH, the CRC check capability can be increased by using the states of the fixed redundant carrier indicator bits, thereby reducing the PDCCH false alarm probability;

for the state of the redundant carrier indicator bit in the DL _ grant, it can be used to indicate the on and off of other carriers, so as to achieve the effect of saving power. For example, the UE semi-statically detects a certain number of carriers according to the traffic notified by the base station, and further dynamically controls the dynamic turning-off and turning-on of the carriers to be detected according to the state of the redundant carrier indicator bits of the carrier indicator bits. Specifically, if the UE detects 3 carriers according to the notification of the base station in the semi-static state, if a certain carrier does not schedule data in a short time, because the semi-static signaling is slow, the carrier that does not schedule data can be dynamically turned off by using the state of the idle carrier indicator bit of the carrier indicator bit, at this time, the UE only needs to detect the other two carriers, and then the base station can also dynamically turn on the carrier that does not schedule data or other carriers in the semi-static state or by using the state of the idle carrier indicator bit of the carrier indicator bit. The power-saving purpose is achieved by controlling the on and off of the carrier which does not bear the physical downlink control channel of the user equipment by using the state of the redundant carrier indication bit of the carrier indication bit. The state of the redundant carrier indicator bit in the DL _ grant may also be used to indicate different areas such as Physical Uplink Control Channel (PUCCH) (including ACK/NACK and Channel Quality Information (CQI)). For the PUCCH area, the PUCCH area may be a PUCCH area of an existing LTE network, or a PUCCH area dedicated to an LTE-a network, and specifically, may be a PUCCH area dedicated to a coordinated multipoint (CoMP) UE, or a PUCCH area dedicated to a Relay (Relay) UE; but may also be used to indicate different PUCCH channels within the same PUCCH region. Different PUCCH channels may be obtained by different control channel element numbers. For example, the UE acquires different PUCCH resource regions according to the states of the redundant carrier indicator bits of the carrier indicator bits, and transmits the PUCCH on the indicated PUCCH resource region; the PUCCH resource region carries information such as uplink ACK/NACK, CQI and the like; the PUCCH resource region may specifically be: time information, frequency information, or codeword information. And the UE acquires different PUCCHs in the same PUCCH resource region according to the state of the redundant carrier indication bits of the carrier indication bits and transmits the PUCCH on the PUCCH indicated by the UE, wherein the resource region can be resource region information such as time information, frequency information or code word information of the PUCCH.

For the status of the redundant carrier Indicator bit in the UL _ grant, the status may be used to indicate different Physical hybrid ARQ Indicator Channel (PHICH) regions, where the PHICH region may be a PHICH region of an existing LTE network, or a PHICH region dedicated in an LTE-a network, and specifically, may be a PHICH region dedicated to CoMP UE or a PHICH region dedicated to Relay UE; the method and the device can also be used for indicating different PHICH channels in the same PHICH region, wherein the different PHICH channels can be obtained through different Physical Resource Block (PRB) labels, or can be obtained through Demodulation pilot signals (DMRS) of different antennas, or can be a mixture of the PRB labels and the DMRS. For example, the UE obtains different PHICH resource regions according to the states of the redundant carrier indicator bits of the carrier indicator bits, and transmits the PHICH on the indicated PHICH resource region; the resource region may specifically be: resource region information such as time information, frequency information, codeword information, etc. The UE acquires different PHICH channels in the same PHICH resource region according to the state of the redundant carrier indication bit of the carrier indication bit and transmits the PHICH on the indicated PHICH; wherein, the PHICH resource region may be: resource region information such as time information, frequency information, codeword information, etc. Acquiring different PHICHs in the same PHICH resource region according to the state of the redundant carrier indication bit of the carrier indication bit; the PHICH channel is corresponding to the DMRS through the lowest label of the PRB, one UE can be scheduled with a plurality of uplink PRBs, and only one DMRS value is provided. Because the UE can configure multiple antennas, and the UE has multiple DMRS values corresponding to the multiple antennas, the state of the idle carrier indicator bits in the carrier indicator bits can be used to indicate different uplink PRB numbers or different PHICHs corresponding to different DMRSs.

Particularly, there is no PDCCH on some carriers dedicated to the LTE-a network, and at this time, there is no value of the PCFICH, so that information indicating the value of the PCFICH is not required on the carriers, and therefore, states of redundant carrier indication bits in the carrier indication bits are further increased, so that when the states of the redundant carrier indication bits indicate the information, states of more carrier indication bits can be indicated.

In still another embodiment of the signaling processing method of the present invention, for two cases that no cross-carrier indication exists in fig. 1 (option 1) and that a cross-carrier indication exists in fig. 2 (option 2), a cell-specific configuration may be adopted, and the following schemes are provided:

scheme 1: signaling configuration is not needed, but carrier indication bits need to exist in the PDCCH of the UE in the two options, and at this time, the UE may be scheduled based on the base station, that is, if the UE determines that option 1 is in the PDCCH, the value of the PCFICH of at least one carrier may be configured independently and used for the UE to detect; if the UE determines that the detection PDCCH is option 2, the value of the PCFICH of the carrier of the PDSCH indicated by the cross-carrier is the same as the value of the PCFICH of the carrier of the PDCCH for scheduling the PDSCH.

Scheme 2: high-level semi-static signaling configuration is required, if option 1 is configured, the PDCCH of the UE does not need to have a carrier indicator bit, and at this time, the value of the PCFICH of at least one carrier may be an independent value; if option 2 is configured, the PDCCH of the UE needs to have a carrier indication bit, and at this time, if the UE detects that the PDCCH determines that there is no carrier crossing indication, the value of the PCFICH of at least one carrier may be independent and used for the UE to detect; if the UE detects the PDCCH and determines that the cross-carrier indication exists, the value of the PCFICH of the carrier of the PDSCH indicated by the cross-carrier is the same as the value of the PCFICH of the carrier where the PDCCH for scheduling the PDSCH is located.

The configuration of option 1 and option 2 may also be configured through UE-specific signaling, and the specific PCFICH value obtaining method is the same as that in scheme 2 above.

Fig. 5 is a flowchart of another signaling processing method according to an embodiment of the present invention, and as shown in fig. 5, the method according to the embodiment may include:

step 501, receiving at least one PDCCH which is sent by a base station and corresponds to at least one carrier respectively.

When the number of carriers carrying multiple independent PDCCHs is less than the number of carriers carrying a PDSCH that the UE needs to monitor, that is, the PDCCH is separated from the PDSCH, that is, the PDCCH carries across carriers, at this time, a plurality of carrier indication bits may be set in the PDCCH to indicate a correspondence between the PDCCH and a carrier on which the PDSCH scheduled correspondingly is located. For exampleThe carrier indication bit is 2 bits, which can indicate 2²If the carrier indicator bit is 3 bits, it may indicate 2 states³The carrier indicator bit 4 bits, which indicates 8 states, may indicate 2⁴16 states. It will be understood by those skilled in the art that the carrier indication bit does not exclude other numbers of bits to indicate a lesser or greater number of states.

And 502, acquiring a value of the PCFICH on the non-primary carrier according to the state of a carrier indication bit in the PDCCH corresponding to the non-primary carrier.

After receiving the PDCCH, the UE may determine a value of the PCFICH on the non-primary carrier according to a state of the carrier indicator bit. For the case that the state of the carrier indicator bit and the value of the PCFICH on each non-primary carrier are in a many-to-one or one-to-one correspondence relationship, the UE may exactly know the value of the PCFICH, for example, the carrier indicator bit is 3 bits, the base station and the UE may agree in advance or notify the carrier indicator bit has 3 bits through signaling, and the state 010 of the carrier indicator bit may be used to indicate that the PDCCH corresponds to the 3 rd non-primary carrier, and simultaneously used to indicate that the value of the PCFICH on the 3 rd non-primary carrier is 2, that is, the one-to-one correspondence relationship between the state 010 of the carrier indicator bit and the value of the PCFICH on the 3 rd non-primary carrier is 2. Correspondingly, when receiving the PDCCH, the UE can know that the PDCCH is scheduled with the PDSCH on the 3 rd non-primary carrier correspondingly according to the state 010 of the carrier indication bit, and the PDCCH occupies 2 symbols, so that the UE can know that the data start position of the PDSCH on the 3 rd non-primary carrier is the 3 rd symbol, and thus the UE can start to extract the PDSCH from the 3 rd symbol.

In another embodiment of the signaling processing method of the present invention, when a value of the PCFICH obtained according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier is one, the method may further include: and determining data initial position information of the PDSCH on the non-main carrier corresponding to the PDCCH according to the acquired value of the PCFICH. When the number of values of the PCFICH obtained according to the state of the carrier indicator bit in the PDCCH corresponding to the non-primary carrier is multiple, the method may further include: and detecting and determining the value of the PCFICH from the obtained possible values of the PCFICHs, and determining the data initial position information of the PDSCH corresponding to the non-primary carrier according to the detected and determined value of the PCFICH.

Assuming that the carrier indicator bit is 3 bits, for the case that the UE acquires a value of one PCFICH, that is, the state of the carrier indicator bit of the PDCCH can accurately indicate the value of each PCFICH on the non-primary carrier. For example, the UE is notified to monitor 3 carriers, the states 0 to 1 of the carrier indicator bits indicate the primary carrier C1, the states 2 to 4 of the carrier indicator bits indicate the non-primary carrier C2, and the states of the 3 carrier indicator bits are used to indicate 3 values of the PCFICH values; and the state 5-7 of the carrier indication bit indicates a non-main carrier C3, and the state of the 3 carrier indication bits is used for indicating 3 values of the value of the PCFICH. In this case, when the UE knows that the carrier indicator bit is 011, it may determine that the PCFICH on the non-primary carrier C2 takes a value of 2, so that the UE determines that the PDSCH starts from the 3 rd symbol position on the non-primary carrier C2, and can demodulate the PDSCH from the correct starting position.

For example, the number of carriers to be monitored by the UE is 3, and it is assumed that the number of primary carriers is 1, the state 000 of the carrier indicator bit indicates a primary carrier, the state 001-100 of the carrier indicator bit indicates a non-primary carrier, and in the states 001-100 of the four carrier indicator bits, 001 and 010 may be used to indicate that the value of the corresponding PCFICH is 1, 011 may be used to indicate that the value of the corresponding PCFICH is 2, 100 may be used to indicate that the value of the corresponding PCFICH is 3, another non-primary carrier is indicated by the states 101-111 of the carrier indicator bit, and the states 101-111 of the three carrier indicator bits may be used to indicate the value of the corresponding PCFICH, that is, a one-to-one or many-to-one correspondence relationship between the state of the carrier indicator bit indicating a non-primary carrier and the value of the PCFICH of a non-primary carrier. Therefore, the UE can determine the corresponding PCFICH according to the carrier indicator bits, and thus determine that the PDSCH starts from the second symbol position on the non-primary carrier, so that the PDSCH can be demodulated from the correct starting position.

For another example, the carrier indicator bit 000 indicates a primary carrier, states 001 to 100 of the carrier indicator bit indicate a non-primary carrier, and in states 001 to 100 of the four carrier indicator bits, 001 and 010 may indicate that a value of a corresponding PCFICH is 1, 011 may indicate that a value of a corresponding PCFICH is 2, 100 may be used for a value of a corresponding PCFICH is 3, states 101 to 111 of the carrier indicator bit indicate another non-primary carrier, and states 101 to 111 of the three carrier indicator bits may respectively indicate values of the corresponding PCFICH, that is, a one-to-one or many-to-one correspondence relationship between the state of the carrier indicator bit indicating the non-primary carrier and the value of the PCFICH of the non-primary carrier. Therefore, the UE can determine the corresponding PCFICH according to the carrier indicator bits, and thus determine that the PDSCH starts from the second symbol position on the non-primary carrier, so that the PDSCH can be demodulated from the correct starting position.

In the above embodiment of the signaling processing method of the present invention, the carrier indication bit of the PDCCH is used to indicate the value of the PCFICH on the non-primary carrier where the PDSCH scheduled by the PDCCH is located, and even if the PDCCH is carried on other carriers, the UE can also know the PCIFICH on the non-primary carrier where the PDSCH scheduled by the UE is located through the carrier indication bit on the PDCCH, so that the accuracy of the UE in checking the value of the PCFICH is improved, and then the PDSCH can be demodulated from the correct initial position information where the PDSCH is placed, thereby effectively reducing the false detection rate of the PDSCH and avoiding the subsequent unnecessary feedback retransmission.

Fig. 6 is a flowchart of another signaling processing method according to an embodiment of the present invention, and as shown in fig. 6, the method according to the embodiment may include:

step 601, receiving at least one PDCCH which is sent by a base station and corresponds to at least one carrier respectively.

The state of a carrier indication bit in each PDCCH in the at least one PDCCH and the value of a Physical Control Format Indicator Channel (PCFICH) on the carrier corresponding to each PDCCH have a corresponding relationship;

step 602, obtaining a value of the PCFICH on the carrier corresponding to each PDCCH according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH.

In another embodiment of the signaling processing method of the present invention, when a value of the PCFICH obtained according to a state of a carrier indicator bit in each PDCCH of the at least one carrier is one, the method may further include: and determining data initial position information of the PDSCH on the carrier corresponding to each PDCCH according to the acquired value of the PCFICH. When the value of the PCFICH obtained according to the state of the carrier indicator bit in each PDCCH of the at least one carrier is multiple, the method may further include: and detecting and determining the value of the PCFICH from the obtained possible values of the PCFICHs, and determining the data initial position information of the PDSCH on the carrier corresponding to each PDCCH according to the detected and determined value of the PCFICH.

In another embodiment of the signaling processing method of the present invention, the step 602 may include: acquiring a value of a PCFICH on a carrier where the PDCCH carried by the cross-carrier is located according to the state of a carrier indication bit in the PDCCH carried by the cross-carrier; determining whether the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located is the same as the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located according to the state of a carrier indication bit of the PDCCH borne by the cross-carrier, if so, the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located is equal to the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located, otherwise, detecting and acquiring the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located in possible values of the PCFICH except the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located.

In the above embodiment of the present invention, the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indication bit of the PDCCH, and in the absence of the primary carrier, the value of the PCFICH can be indicated by increasing the indication granularity, that is, a subset of the value set of the PCFICH is indicated by using the state of one carrier indication bit, and by increasing the number of bits of the carrier indication bit, so that even if the PDCCH is carried on another carrier, the UE can know the PCIFICH on the carrier corresponding to the PDSCH scheduled by using the carrier indication bit on the PDCCH, thereby improving the accuracy of the value detection of the PCFICH by the UE, and further demodulating the PDSCH from the correct initial position information where the PDSCH is placed, effectively reducing the false detection rate of the PDSCH, and avoiding the subsequent unnecessary feedback retransmission.

Fig. 7 is a flowchart of a further signaling processing method according to an embodiment of the present invention, and as shown in fig. 7, the method according to the embodiment may include:

step 701, obtaining the PDSCH from the region except the control region in the subframe.

The control region is the largest region capable of bearing the PDCCH in one subframe.

The starting position of the PDSCH is in an area other than the control area, and the real position may be known to the UE and the base station.

In an LTE system, one subframe has 14 symbols, where a PDCCH occupies the first 3 or 4 symbols at most, and PDSCH mapping in an LTE network is mapped according to symbol time sequence, so that when cross-carrier indication exists, a data header of a PDSCH of a carrier that does not carry a PDCCH of a certain UE may determine an erroneous data start position due to erroneous detection of a value of a PCFICH, thereby bringing about subsequent decoding errors. Therefore, in this embodiment, the UE may acquire the PDSCH in a new acquisition mode, that is, acquire the PDSCH from an area other than the control area. The control region is a region where the PDCCH may be placed, and for example, the control region occupies the first 3 symbols of the subframe, and so on. In the first 3 symbols of the control region, the PDCCH may only occupy the first 2 symbols, but when the UE acquires the PDSCH, the UE acquires the PDSCH from the region starting from the 3 rd symbol, that is, from the 4 th symbol, that is, the region that the PDCCH may occupy is first left out, and data in the region where the PDSCH is necessarily placed is acquired.

In another embodiment of the signaling processing method of the present invention, the acquiring the PDSCH from the region except the control region in the subframe in step 701 may include: and acquiring the PDSCH from the region except the control region in the subframe by applying a preset mapping sequence.

The preset mapping sequence can be obtained by the prior agreement of the UE and the base station or the signaling notification.

Step 702, in the control region, obtaining the PDSCH by applying a time sequence opposite to the symbol arrangement in the subframe.

In the control region, i.e. the first 3 regions where the PDCCH may be placed in this embodiment, the PDSCH may be acquired in reverse time order to the symbol arrangement in the subframe. The reverse time sequence of the symbol arrangement in the subframe means that the PDSCH on the 3 rd symbol in the subframe is acquired first, and then the PDSCH on the 2 nd symbol is acquired.

For example, the present embodiment may acquire the remaining PDSCHs sequentially from back to front. When the value of the PCFICH is 1 or 2, because the PDCCH occupies 1 or 2 symbols, 1 or 2 symbols may be used to place the PDSCH. For example, when the value of the PCFICH is 1, that is, the PDCCH occupies only the 1 st symbol of the control region, when acquiring the remaining PDSCH, the 3 rd symbol in the control region may be acquired first, and then the 2 nd symbol in the control region may be acquired.

The UE may decode the PDSCH according to the acquisition order of

steps

701 and 702.

The method has the advantages that for the PDSCH outside the control region, namely in the region after the 3 rd symbol or the 4 th symbol, the UE can find the data starting point and the mapping sequence according to a certain mapping rule, and for the PDSCH in the control region, reverse mapping can be adopted, so that the influence of the value detection error of the PCFICH on the PDSCH mapped by the UE can be reduced. For example, if the value of the PCFICH transmitted by the base station is 2, but the UE has false detection of 1, the UE can correctly detect the PDSCH outside the control region (the first 3 symbols or the first 4 symbols in the subframe) and the PDSCH on the 3 rd symbol or the 4 th symbol in the control region, and only the data on the 2 nd symbol in the control region in the subframe is false detected as the PDSCH, that is, the data on the 2 nd symbol is interfered and one PDSCH is received; similarly, if the value of the PCFICH transmitted by the base station is 1, but the UE has false detection of 2, the UE can correctly detect the PDSCH outside the control region and the PDSCH on the 3 rd symbol or the 4 th symbol in the control region, and at this time, there is no interference, but only the PDSCH on the 2 nd symbol in the control region is received less, and there is no great influence on the decoding of the PDSCH.

In the signaling processing method of this embodiment, the subframe is divided into the control region and the region other than the control region, and the PDSCH is acquired from the control region and the region other than the control region according to the preset mapping sequence, so that the influence of misdetection of the value of the PCFICH on demodulation of the PDSCH can be reduced, and the system performance is improved.

Fig. 8 is a flowchart of yet another signaling processing method according to an embodiment of the present invention, and as shown in fig. 8, the method according to the embodiment may include:

step 801, mapping PDSCH to the region except the control region in the subframe.

The control region is the largest region capable of bearing a physical downlink control channel PDCCH in one subframe.

In an LTE system, one subframe has 14 symbols, where a PDCCH occupies the first 3 or 4 symbols at most, and PDSCH mapping in an LTE network is mapped according to symbol time sequence, so that when cross-carrier indication exists, a data header of a PDSCH of a carrier that does not carry a PDCCH of a certain UE may determine an erroneous data start position due to erroneous detection of a value of a PCFICH, thereby bringing about subsequent decoding errors. Therefore, in this embodiment, the base station, e.g., eNodeB, may generate the PDSCH by using a new mapping method, i.e., mapping the PDSCH to an area other than the control area. The control region is a region where the PDCCH may be placed, and for example, the control region occupies the first 3 symbols of the subframe, and the control region occupies the first 4 symbols of the subframe, and so on. In the first 3 symbols of the control region, the PDCCH may only occupy the first 2 symbols, but the base station maps the PDSCH from the region after the 3 rd symbol, i.e., from the 4 th symbol, when mapping the PDSCH, i.e., the region that the PDCCH may occupy is first left out, and the PDSCH is mapped in the region that is certainly used for placing the PDSCH.

Step 802, mapping the PDSCH in the control region using a time sequence opposite to the symbol arrangement in the subframe.

In the control region, i.e., the first 3 regions where the PDCCH may be placed in the present embodiment, the PDSCH may be mapped in reverse time order of the symbol arrangement in the subframe. The reverse time sequence of the symbol arrangement in the subframe means that the PDSCH on the 3 rd symbol in the subframe is mapped first, and then the PDSCH on the 2 nd symbol is mapped.

For example, in this embodiment, the base station may map the remaining PDSCHs sequentially from back to front. When the value of the PCFICH is 1 or 2, since the symbols occupied by the PDCCH are 1 or 2, the PDSCH may also be mapped on 1 or 2 symbols in the control region. For example, when the value of the PCFICH is 1, that is, the PDCCH occupies only the 1 st symbol of the control region, when mapping the remaining PDSCH, the PDSCH may be mapped first on the 3 rd symbol in the control region and then mapped on the 2 nd symbol in the control region.

It should be noted that there may be no sequence between the

above steps

801 and 802.

In another embodiment of the signaling processing method of the present invention, the mapping of the PDSCH to the region of the subframe except the control region in step 801 may include: and mapping the PDSCH to the region except the control region in the subframe by applying a preset mapping sequence.

The method has the advantages that for the PDSCH outside the control region, namely in the region behind the 3 rd symbol or the 4 th symbol, the base station can map the PDSCH according to a certain mapping rule, and for the PDSCH in the control region, reverse mapping can be adopted, so that when the PDSCH is obtained by mapping by the UE, a data starting point and a mapping sequence can be found according to a certain mapping rule, and the influence of a value detection error of the PCFICH on the PDSCH mapped by the UE is reduced. For example, if the value of the PCFICH transmitted by the base station is 2, but the UE has false detection of 1, the UE can correctly detect the PDSCH outside the control region (the first 3 symbols or the first 4 symbols in the subframe) and the PDSCH on the 3 rd symbol or the 4 th symbol in the control region, and only the data on the 2 nd symbol in the control region in the subframe is false detected as the PDSCH, that is, the data on the 2 nd symbol is interfered and one PDSCH is received; similarly, if the value of the PCFICH transmitted by the base station is 1, but the UE has false detection of 2, the UE can correctly detect the PDSCH outside the control region and the PDSCH on the 3 rd symbol or the 4 th symbol in the control region, and at this time, there is no interference, but only the PDSCH on the 2 nd symbol in the control region is received less, and there is no great influence on the decoding of the PDSCH.

In the signaling processing method of this embodiment, the subframe is divided into the control region and the region other than the control region, and the PDSCH is mapped from the control region and the region other than the control region according to the preset mapping order by using the new mapping method, so that the influence of the false detection of the value of the PCFICH on the demodulation of the PDSCH by the subsequent UE can be reduced, and the system performance is improved.

Fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 9, the base station according to the embodiment includes: the first generating module 11 is configured to generate at least one physical downlink control channel PDCCH corresponding to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in a PDCCH corresponding to a non-primary carrier in the at least one carrier and a value of a physical control format indicator channel PCFICH on the non-primary carrier; the first sending module 12 is configured to send the at least one PDCCH to a user equipment, so that the user equipment obtains a value of the PCFICH on the non-primary carrier according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier.

The base station of this embodiment has the same principle as the signaling processing method embodiment shown in fig. 3, and is not described again.

In another embodiment of the base station of the present invention, when 2^NWhen the number of carriers of the non-primary carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: the state of the carrier indicator bit of the PDCCH corresponding to each non-primary carrier in the non-primary carriers and the value of the PCFICH on each non-primary carrier are in a one-to-one correspondence relationship, or in a many-to-one correspondence relationship. When 2 is in^NWhen the number of carriers of the non-primary carrier is less than 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: in the non-primary carriers, the state of a carrier indication bit in the PDCCH corresponding to at least one non-primary carrier and the value of the PCFICH on the non-primary carrier are in a one-to-many correspondence relationship.

In the base station of the above embodiment of the present invention, the value of the PCFICH on the non-primary carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indication bit of the PDCCH, and even if the PDCCH is carried on other carriers, the UE can also know the PCIFICH on the non-primary carrier where the PDSCH scheduled by the UE is located through the carrier indication bit on the PDCCH, so that the accuracy of the UE in checking the value of the PCFICH is improved, and further the PDSCH can be demodulated from the correct initial position information where the PDSCH is placed, thereby effectively reducing the false detection rate of the PDSCH and avoiding the subsequent unnecessary feedback retransmission.

Fig. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention, and as shown in fig. 10, the user equipment of the present invention may include: a first receiving module 13 and a first obtaining module 14. The first receiving module 13 is configured to receive at least one physical downlink control channel PDCCH, which is sent by a base station and corresponds to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in the PDCCH corresponding to a non-primary carrier in the at least one carrier and a value of a physical control format indicator channel PCFICH on the non-primary carrier; the first obtaining module 14 is configured to obtain a value of the PCFICH on the non-primary carrier according to a carrier indicator bit state in the PDCCH corresponding to the non-primary carrier.

The principle of the user equipment in this embodiment is the same as that of the signaling processing method embodiment shown in fig. 5, and details are not described again.

Fig. 11 is a schematic structural diagram of another user equipment according to an embodiment of the present invention, and as shown in fig. 11, the user equipment according to this embodiment may further include, on the basis of the user equipment shown in fig. 10: a first processing module 31, where the first acquiring module 31 is configured to determine, when a value of the PCFICH acquired by the first acquiring module 14 according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier is one, data start position information of the PDSCH on the non-primary carrier corresponding to the PDCCH according to the acquired value of the PCFICH; when the number of the PCFICHs obtained by the first obtaining module 14 according to the state of the carrier indicator bit in the PDCCH corresponding to the non-primary carrier is multiple, the value of the PCFICH is detected and determined from the possible values of the multiple obtained PCFICHs, and the data start position information of the PDSCH corresponding to the non-primary carrier is determined according to the detected and determined value of the PCFICH.

In the embodiment of the user equipment, the value of the PCFICH on the non-primary carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indication bit of the PDCCH, and even if the PDCCH is carried on other carriers, the UE can acquire the PCIFICH on the non-primary carrier where the PDSCH scheduled by the UE is located through the carrier indication bit on the PDCCH, so that the accuracy of the UE in checking the value of the PCFICH is improved, the PDSCH can be demodulated from the correct initial position information where the PDSCH is placed, the false detection rate of the PDSCH is effectively reduced, and the subsequent unnecessary feedback retransmission is avoided.

Accordingly, an embodiment of the signaling processing system of the present invention may include the base station described in the foregoing embodiment. In the system of this embodiment, the value of the PCFICH on the non-primary carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indicator bit of the PDCCH, and even if the PDCCH is carried on other carriers, the UE can acquire the PCIFICH on the non-primary carrier corresponding to the PDSCH scheduled by the UE through the carrier indicator bit on the PDCCH, so that the accuracy of the value check of the PCFICH by the UE is improved, and then the PDSCH can be demodulated from the correct initial position information where the PDSCH is placed, the false detection rate of the PDSCH is effectively reduced, and the subsequent unnecessary feedback retransmission is avoided.

Fig. 12 is a schematic structural diagram of another base station according to an embodiment of the present invention, and as shown in fig. 12, the base station according to this embodiment may include: a second generating module 15 and a second sending module 16. The second generating module 15 is configured to generate at least one physical downlink control channel PDCCH corresponding to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in each PDCCH of the at least one PDCCH and a value of a physical control format indicator channel PCFICH on the carrier corresponding to the each PDCCH; the second sending module 16 is configured to send the at least one PDCCH to the user equipment, so that the user equipment obtains, according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH, a value of the PCFICH on a carrier corresponding to each PDCCH.

The base station of this embodiment has the same principle as the signaling processing method embodiment shown in fig. 4, and is not described again.

In yet another embodiment of the base station of the present invention, when 2^NWhen the number of carriers of the at least one carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: the state of the carrier indicator bit of the PDCCH corresponding to each carrier of the at least one carrier and the value of the PCFICH on each carrier are in a one-to-one correspondence relationship, or in a many-to-one correspondence relationship. When 2 is in^NWhen the number of carriers of the at least one carrier is less than 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship may include: at least one carrier in the at least one carrier corresponds to a carrier indication ratio in a PDCCHThe value of the PCFICH on the carrier and the special state are in one-to-many correspondence. The correspondence relationship may further include: the state of a carrier indication bit in the cross-carrier-borne PDCCH indicates that the value of the PCFICH on the carrier on which the cross-carrier-borne PDCCH is located is the same as or different from the value of the PCFICH on the carrier on which the PDSCH corresponding to the cross-carrier-borne PDCCH is located.

In the base station of the embodiment, the carrier indication bit of the PDCCH is used to indicate the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located, and in the absence of the primary carrier, the indication granularity can be increased, that is, one carrier indication bit indicates a subset of the value set of the PCFICH, and the value of the PCFICH can be indicated by increasing the number of bits of the carrier indication bit.

Accordingly, an embodiment of the signaling processing system of the present invention may include the base station described in the foregoing embodiment. In the system of this embodiment, the carrier indication bit of the PDCCH is used to indicate the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located, and in the absence of the primary carrier, the value of the PCFICH may be indicated by increasing the indication granularity, that is, using one carrier indication bit to indicate a subset of the value set of the PCFICH, and by increasing the number of bits of the carrier indication bit, so that, even if the PDCCH is carried on other carriers, the UE may also know the PCIFICH on the carrier corresponding to the PDSCH scheduled by using the carrier indication bit on the PDCCH, thereby improving the accuracy of value detection of the PCFICH by the UE, and further demodulating the PDSCH from the correct initial position information where the PDSCH is placed, effectively reducing the false detection rate of the PDSCH, and avoiding subsequent unnecessary feedback retransmission.

Fig. 13 is a schematic structural diagram of another user equipment according to an embodiment of the present invention, and as shown in fig. 13, the user equipment according to this embodiment may include: a second receiving module 17 and a second obtaining module 18. The second receiving module 17 is configured to receive at least one physical downlink control channel PDCCH, which is sent by a base station and corresponds to at least one carrier, where a correspondence relationship exists between a state of a carrier indicator bit in each PDCCH of the at least one PDCCH and a value of a physical control format indicator channel PCFICH on the carrier corresponding to the each PDCCH; the second obtaining module 18 is configured to obtain, according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH, a value of the PCFICH on a carrier corresponding to each PDCCH.

Fig. 14 is a schematic structural diagram of another user equipment according to an embodiment of the present invention, and as shown in fig. 14, the user equipment according to this embodiment may further include, on the basis of the user equipment shown in fig. 13: a second processing module 32, where the second processing module 32 is configured to, when a value of the PCFICH acquired by the second acquiring module 18 according to a state of a carrier indicator bit in each PDCCH in the at least one carrier is one, determine, according to the acquired value of the PCFICH, data start position information of the PDSCH on the carrier corresponding to each PDCCH; when the number of the PCFICHs obtained by the second obtaining module 18 according to the state of the carrier indicator bit in each PDCCH of the at least one carrier is multiple, detecting and determining the value of the PCFICH from the possible values of the multiple obtained PCFICHs, and determining the data start position information of the PDSCH on the carrier corresponding to each PDCCH according to the detected and determined value of the PCFICH; or,

the value of the PCFICH on the carrier where the PDCCH carried by the cross-carrier is located is obtained according to the state of the carrier indication bit in the PDCCH carried by the cross-carrier; determining whether the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located is the same as the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located according to the state of a carrier indication bit of the PDCCH borne by the cross-carrier, if so, the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located is equal to the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located, otherwise, detecting and acquiring the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located in possible values of the PCFICH except the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located.

In the UE of the above embodiment of the present invention, the value of the PCFICH of the carrier where the PDSCH scheduled by the PDCCH is located is indicated by using the state of the carrier indicator bit of the PDCCH, and in the absence of the primary carrier, the PCFICH value can be indicated by increasing the indication granularity, that is, by using the state of one carrier indicator bit to indicate a subset of the value set of the PCFICH, and by increasing the number of bits of the carrier indicator bit, therefore, even if the PDCCH is carried on another carrier, the UE can know the pcifiich on the carrier corresponding to the PDSCH scheduled by using the carrier indicator bit on the PDCCH, thereby improving the accuracy of the UE in detecting the value of the PCFICH, and further demodulating the PDSCH from the correct initial position information where the PDSCH is placed, effectively reducing the false detection rate of the PDSCH, and avoiding the subsequent unnecessary feedback retransmission.

Fig. 15 is a schematic structural diagram of another user equipment according to an embodiment of the present invention, and as shown in fig. 15, the user equipment according to this embodiment may include: a third acquisition module 21 and a fourth acquisition module 22. The third obtaining module 21 is configured to obtain the PDSCH from a region in the subframe except for a control region, where the control region is a largest region capable of carrying the PDCCH in one subframe; the fourth obtaining module 22 is configured to obtain the PDSCH in the control region by applying a reverse time order to the symbol arrangement in the subframe.

The implementation principle of the user equipment in this embodiment is the same as that of the signaling processing method embodiment shown in fig. 7, and is not described again.

The user equipment of this embodiment divides the subframe into the control region and the region other than the control region, and acquires the PDSCH from the control region and the region other than the control region according to the preset mapping sequence, so that the influence of misdetection of the value of the PCFICH on demodulation of the PDSCH can be reduced, and the system performance is improved.

Fig. 16 is a schematic structural diagram of another base station according to an embodiment of the present invention, and as shown in fig. 16, the base station according to this embodiment may include: a first mapping module 23 and a second mapping module 24. The first mapping module 23 is configured to map the PDSCH to a region in a subframe except for a control region, where the control region is a largest region in the subframe that can carry the PDCCH; the second mapping module 24 is configured to map the PDSCH within the control region using a reverse time order of the symbol arrangement in the subframe.

The base station of this embodiment is the same as the implementation principle of the signaling processing method embodiment shown in fig. 8, and is not described again.

In the base station of this embodiment, the subframe is divided into the control region and the region other than the control region, and the PDSCH is mapped from the control region and the region other than the control region according to the preset mapping order by using the new mapping method, so that the influence of the misdetection of the value of the PCFICH on the demodulation of the PDSCH by the subsequent UE can be reduced, and the system performance is improved.

Accordingly, an embodiment of the signaling processing system of the present invention may include the base station described in the foregoing embodiment. In the system of this embodiment, the subframe is divided into the control region and the region other than the control region, and the PDSCH is mapped from the control region and the region other than the control region according to the preset mapping order by using the new mapping method, so that the influence of the misdetection of the value of the PCFICH on the demodulation of the PDSCH by the subsequent UE can be reduced, and the system performance is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.

Claims

1. A method for signaling, comprising:

2. The signaling processing method according to claim 1, characterized in that when 2, 2^NWhen the number of carriers of the non-main carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship includes:

the state of the carrier indicator bit of the PDCCH corresponding to each non-primary carrier in the non-primary carriers and the value of the PCFICH on each non-primary carrier are in one-to-one correspondence, or in many-to-one correspondence;

when 2 is in^NWhen the number of carriers of the non-main carrier is less than 3 times, the corresponding relationship includes:

in the non-primary carriers, the state of a carrier indication bit in the PDCCH corresponding to at least one non-primary carrier and the value of the PCFICH on the non-primary carrier are in a one-to-many correspondence relationship.

3. A method for signaling, comprising:

4. The signaling processing method according to claim 3, characterized in that, when 2, 2^NWhen the number of carriers of the at least one carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship includes:

a one-to-one correspondence relationship is formed between the state of the carrier indication bit of the PDCCH corresponding to each carrier of the at least one carrier and the value of the PCFICH on each carrier, or a many-to-one correspondence relationship is formed;

when 2 is in^NWhen the number of carriers of the at least one carrier is less than 3 times, the corresponding relationship includes:

in the at least one carrier, a one-to-many correspondence relationship is formed between the state of a carrier indication bit in the PDCCH corresponding to the at least one carrier and the value of the PCFICH on the carrier; or,

the corresponding relation comprises:

the state of a carrier indication bit in the cross-carrier-borne PDCCH indicates that the value of the PCFICH on the carrier on which the cross-carrier-borne PDCCH is located is the same as or different from the value of the PCFICH on the carrier on which the PDSCH corresponding to the cross-carrier-borne PDCCH is located.

5. A method for signaling, comprising:

6. The signaling processing method according to claim 5, wherein when a value of the PCFICH obtained according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier is one, the method further comprises:

determining data initial position information of a PDSCH on a non-main carrier corresponding to the PDCCH according to the acquired value of the PCFICH;

when the value of the PCFICH obtained according to the state of the carrier indicator bit in the PDCCH corresponding to the non-primary carrier is multiple, the method further includes:

and detecting and determining the value of the PCFICH from the obtained possible values of the PCFICHs, and determining the data initial position information of the PDSCH corresponding to the non-primary carrier according to the detected and determined value of the PCFICH.

7. A method for signaling, comprising:

8. The signaling processing method according to claim 7, wherein when a value of the PCFICH obtained according to a state of a carrier indicator bit in each PDCCH of the at least one carrier is one, the method further comprises:

determining data initial position information of a PDSCH on a carrier corresponding to each PDCCH according to the acquired value of the PCFICH;

when the value of the PCFICH obtained according to the state of the carrier indicator bit in each PDCCH of the at least one carrier is multiple, the method further includes:

and detecting and determining the value of the PCFICH from the obtained possible values of the PCFICHs, and determining the data initial position information of the PDSCH on the carrier corresponding to each PDCCH according to the detected and determined value of the PCFICH.

9. The signaling processing method according to claim 7, wherein the obtaining, according to a state of a carrier indicator bit in each PDCCH of the at least one PDCCH, a value of a PCFICH on a carrier corresponding to the each PDCCH includes:

acquiring a value of a PCFICH on a carrier where the PDCCH carried by the cross-carrier is located according to the state of a carrier indication bit in the PDCCH carried by the cross-carrier;

determining whether the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located is the same as the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located according to the state of a carrier indication bit of the PDCCH borne by the cross-carrier, if so, the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located is equal to the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located, otherwise, detecting and acquiring the value of the PCFICH on the carrier where the PDSCH corresponding to the PDCCH borne by the cross-carrier is located in possible values of the PCFICH except the value of the PCFICH on the carrier where the PDCCH borne by the cross-carrier is located.

10. A method for signaling, comprising:

11. A method for signaling, comprising:

12. A base station, comprising:

13. The base station as claimed in claim 12, wherein the number 2 is^NWhen the number of carriers of the non-main carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship includes:

14. A base station, comprising:

15. The base station as claimed in claim 14, wherein the number 2 is^NWhen the number of carriers of the at least one carrier is greater than or equal to 3 times, where N is the number of bits of the carrier indicator bit, the corresponding relationship includes:

the corresponding relation comprises:

16. A user device, comprising:

17. The user equipment of claim 16, further comprising:

a first processing module, configured to determine, when a value of the PCFICH acquired by the first acquiring module according to a state of a carrier indicator bit in the PDCCH corresponding to the non-primary carrier is one, data start position information of the PDSCH on the non-primary carrier corresponding to the PDCCH according to the acquired value of the PCFICH; when the first obtaining module obtains a plurality of values of the PCFICH according to the state of the carrier indicator bit in the PDCCH corresponding to the non-primary carrier, the first obtaining module detects and determines the value of the PCFICH from the obtained possible values of the plurality of PCFICHs, and determines the data start position information of the PDSCH corresponding to the non-primary carrier according to the detected and determined value of the PCFICH.

18. A user device, comprising:

19. The user equipment of claim 18, further comprising:

a second processing module, configured to determine, when a value of the PCFICH acquired by the second acquiring module according to a state of a carrier indicator bit in each PDCCH in the at least one carrier is one, data start position information of the PDSCH on the carrier corresponding to each PDCCH according to the acquired value of the PCFICH; when the second obtaining module obtains multiple values of the PCFICH according to the state of the carrier indicator bit in each PDCCH in the at least one carrier, detecting and determining the value of the PCFICH from the obtained possible values of the multiple PCFICHs, and determining data start position information of the PDSCH on the carrier corresponding to each PDCCH according to the detected and determined value of the PCFICH; or,

20. A user device, comprising:

21. A base station, comprising: