CN101262322A - Transmission method and device for uplink and downlink percent information in time division duplex system - Google Patents
Transmission method and device for uplink and downlink percent information in time division duplex system Download PDFInfo
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Abstract
The invention provides a method and a device for sending information of proportion of upstream and downstream in a time division duplex system. The method comprises the following steps: all proportional relations of upstream and downstream are divided into two groups to ensure that proportional relation of upstream and downstream in each group has the same maximum number of corresponding physical hybrid retransmission channels under the condition of same bandwidth; command of proportion of upstream and downstream which instructs the proportional relation of upstream and downstream is carried by D-BCH; the D-BCH is sent on a subframe 0 model or/and a subframe model 5 from a transmission side. The invention does not need to send information of proportion of upstream and downstream on P-BCH so as to ensure the consistency of P-BCH of a TDD system and an FDD system and the problem of not being able to obtain information caused by dead embrace does not exist.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting uplink and downlink proportion information in a time division duplex system.
Background
An important feature of a Time Division Duplex (TDD) system is that subframes for uplink and downlink transmissions are configurable. A frame structure of a TDD mode of an LTE (Long Term Evolution) system is shown in fig. 1. In this frame structure, a 10ms (307200Ts, 1ms 30720 Ts) radio frame is divided into two 5ms half-frames, each containing 8 slots of length 0.5ms (15360 Ts) and 3 special slots: a downlink Pilot Time slot dwpts (downlink Pilot Time slot), a guard interval gp (guard period), and an uplink Pilot Time slot uppts (uplink Pilot Time slot). The three special slots are each configurable in length, but the total length is 1ms (30720 Ts). Every two time slots of 0.5ms form a subframe with the length of 1ms, which is numbered from subframe #0 to subframe #9, wherein subframe #1 and subframe #6 comprise the special time slot, and subframe #0 and/or subframe #5 and DwPTS are fixed as downlink time slots. Another mode FDD (Frequency Division Duplex) exists in current LTE systems.
The physical control format indicator channel may carry 2 bits of information, which is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for transmitting the physical downlink control channel, in a general subframe, the number of OFDM symbols for transmitting the physical downlink control channel is 1, 2, and 3, and 2 bits of information are required for representation, and in the DwPTS, the number of OFDM symbols for transmitting the physical downlink control channel is 1 and 2, and only 1 bit of information is required for representation, so that the physical control format indicator channel in the DwPTS may carry 1 bit of other information.
Under the above frame structure, the ratio of uplink and downlink (referring to general uplink and downlink time slots, non-special time slots) is related to the switching period. When the switching period is 5ms and the two previous 5ms are the same, the uplink and downlink proportion has four selectable options: 1: 3/2: 2/3: 1/3: 5. When the switching period is 10ms, since the subframe #5 and DwPTS are fixed as downlink subframes, there are three options for the uplink and downlink ratio: 6: 3/7: 2/8: 1. The selection of 5ms periods 5: 3 and 10ms periods 10: 0, among others, is discussed further.
In the process of implementing the present invention, the inventor finds that a user needs to obtain the position information of the dynamic Broadcast channel through a downlink physical control channel, the determination of the position of the physical downlink control channel needs to know the quantity information of downlink physical hybrid retransmission channels, the quantity information of the downlink physical hybrid retransmission channels is related to the uplink-downlink proportional relationship, and the uplink-downlink proportional relationship needs to be obtained from the dynamic Broadcast channel, which creates a deadlock problem, so that the information can not be obtained.
Another solution proposed for this purpose is to transmit on the physical Broadcast channel P-BCH (physical Broadcast channel), but in implementing the present invention, the inventor finds that at least 3 bits are required for representing the uplink and downlink proportion information, which results in that the coding, modulation and mapping of the P-BCH are different between the TDD system and the FDD system, which increases the complexity of P-BCH demodulation.
Disclosure of Invention
The invention aims to provide a method and a device for sending uplink and downlink proportion information in a time division duplex system, so as to solve the problem of high demodulation complexity caused by P-BCH transmission proportion relation in the prior art.
In an embodiment of the present invention, a method for sending uplink and downlink proportion information in a time division duplex system is provided, which includes the following steps: dividing all the uplink and downlink proportional relations into 2 groups, and enabling the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth to be the same; carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through a D-BCH; and the transmitting side transmits the D-BCH on subframe #0 or \ and subframe # 5.
Preferably, the dividing all the uplink and downlink proportional relationships into 2 groups, and making the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relationships in each group under the same bandwidth the same specifically includes: 1: 3 of the 5ms period is set 1, and the rest proportion relation is set 2; the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 2 uplink subframes; the number of physical hybrid retransmission channels corresponding to the group 2 is 0; or, 1: 3 for 5ms period and 3: 5 for 10ms period are set 1, and the rest proportion relationship is set 2; the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 1 uplink subframe; the number of physical hybrid retransmission channels corresponding to group 2 is 0.
Preferably, the method further comprises the following steps: the receiving side receives the subframe #0 or \ and the subframe # 5; blind detection is carried out according to the number of the physical hybrid retransmission channels corresponding to the group 1 and the group 2 respectively so as to solve a target physical downlink control channel; and obtaining the uplink and downlink proportional relation indicated in the D-BCH from the target physical downlink control channel.
Preferably, the blind detection according to the number of the physical hybrid retransmission channels corresponding to the group 1 and the group 2 respectively specifically includes: blind detection was performed according to group 2 and then according to group 1.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits the group number signaling on a physical control format indication channel in the DwPTS.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits a group signal signaling on the auxiliary synchronous channel; wherein, the 1-bit group number signaling is subjected to BPSK modulation to be multiplied by each value of the sequence of the secondary synchronization channel, and then the modulated secondary synchronization channel is transmitted.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits a group signal signaling on a main synchronous channel; wherein, the 1-bit group signal is subjected to BPSK modulation and multiplied by each value of the sequence of the main synchronization channel, and the modulated main synchronization channel is transmitted.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits the group number signaling on the P-BCH.
Preferably, the method further comprises the following steps: the receiving side receives the group signal signaling on the corresponding channel; resolving the indicated group number from the group number signaling; and resolving the D-BCH on the subframe #0 or/and the subframe #5 according to the group number, and acquiring the indicated uplink and downlink proportional relation from the D-BCH.
In an embodiment of the present invention, a method for sending uplink and downlink proportion information in a time division duplex system is further provided, including the following steps: dividing all the uplink and downlink proportional relations into 3 groups, and enabling the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth to be the same; carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through a D-BCH; and the transmitting side transmits the D-BCH on subframe #0 or \ and subframe # 5.
Preferably, the dividing all the uplink and downlink proportional relationships into 3 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relationships in each group under the same bandwidth is the same specifically includes: 1: 3 of 5ms period is set 1, 3: 5 of 10ms period is set 2, and the rest proportion relation is set 3; the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 2 uplink subframes; the number of physical hybrid retransmission channels corresponding to the group 2 is the number of physical hybrid retransmission channels required by 1 uplink subframe; the number of physical hybrid retransmission channels corresponding to group 3 is 0.
Preferably, the method further comprises the following steps: the receiving side receives the subframe #0 or \ and the subframe # 5; blind detection is carried out according to the number of the physical hybrid retransmission channels corresponding to the group 1, the group 2 and the group 3 respectively so as to solve a target physical downlink control channel; and obtaining the uplink and downlink proportional relation indicated in the D-BCH from the target physical downlink control channel.
Preferably, the blind detection according to the number of the physical hybrid retransmission channels corresponding to the group 1, the group 2, and the group 3 specifically includes: blind detection is performed according to the group 2, then blind detection is performed according to the group 3, and finally blind detection is performed according to the group 1; or, the blind detection is performed according to the group 3, then the blind detection is performed according to the group 2, and finally the blind detection is performed according to the group 1.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits a group number signaling on a physical control format indication channel in the DwPTS; wherein, a first bit is sent on a physical control format indication channel in a first DwPTS in a wireless frame, which indicates that the current group number is group 3 or group 1 and group 2; the physical control format indicates the second bit sent on the channel in the second DwPTS in a radio frame, indicating that the current group number is group 1 or group 2.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits a group signal signaling on the auxiliary synchronous channel; wherein a 2-bit group signal is QPSK-modulated by multiplying each value of a sequence of the secondary synchronization channel, and then the modulated secondary synchronization channel is transmitted.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits a group signal signaling on a main synchronous channel; in which a 2-bit group signal is QPSK-modulated by multiplying each value of a sequence of a primary synchronization channel, and then the modulated primary synchronization channel is transmitted.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits the group number signaling on the P-BCH.
Preferably, the method further comprises the following steps: the receiving side receives the group signal signaling on the corresponding channel; resolving the indicated group number from the group number signaling; and resolving the D-BCH on the subframe #0 or/and the subframe #5 according to the group number, and acquiring the indicated uplink and downlink proportional relation from the D-BCH.
Preferably, the transmitting side transmitting the D-BCH in the subframe #0 or \ and the subframe #5 specifically includes: the transmitting side transmits the D-BCH on subframe # 5.
In an embodiment of the present invention, a device for sending uplink and downlink proportion information in a time division duplex system is further provided, including: the grouping module is used for grouping all the uplink and downlink proportional relations into 2 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth is the same; the first placement module is used for carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through the D-BCH; and the second placing module is used for sending the D-BCH on the subframe #0 or/and the subframe # 5.
In an embodiment of the present invention, a device for sending uplink and downlink proportion information in a time division duplex system is further provided, including: the grouping module is used for grouping all the uplink and downlink proportional relations into 3 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth is the same; the first placement module is used for carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through the D-BCH; and the second placing module is used for sending the D-BCH on the subframe #0 or/and the subframe # 5.
The sending method and device for uplink and downlink proportion information in the TDD system do not need to send on the P-BCH, thereby ensuring the consistency of the P-BCH of the TDD system and the FDD system and avoiding the problem that information cannot be obtained due to deadlock.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 shows a frame structure diagram of a time division duplex system;
fig. 2 is a flowchart illustrating a method for transmitting uplink and downlink proportion information in a tdd system according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating an apparatus for transmitting uplink and downlink proportion information in a time division duplex system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 2 is a flowchart illustrating a method for sending uplink and downlink proportion information in a time division duplex system according to an embodiment of the present invention, where the method includes:
step S10, dividing all the uplink and downlink proportional relations into 2 groups, and enabling the maximum number of PHICHs corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth to be the same;
step S20, carrying the uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through D-BCH; and
in step S30, the transmitting side transmits D-BCH on subframe #0 and/or subframe # 5.
In the method, D-BCH is transmitted on a subframe #0 and/or a subframe # 5; information indicating a specific uplink and downlink ratio is carried through the D-BCH. The method for sending the uplink and downlink proportion information in the TDD system does not need to send the uplink and downlink proportion information on a P-BCH, thereby ensuring the consistency of the P-BCH of the TDD system and the P-BCH of the FDD system and avoiding the problem that the information cannot be obtained due to deadlock.
Preferably, the grouping step specifically includes: 1: 3 of the 5ms period is set 1, and the rest proportion relation is set 2; the PHICH number corresponding to the group 1 is the PHICH number required by 2 uplink subframes; the number of PHICHs corresponding to the group 2 is 0; or, 1: 3 for 5ms period and 3: 5 for 10ms period are set 1, and the rest proportion relationship is set 2; the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 1 uplink subframe; the number of physical hybrid retransmission channels corresponding to group 2 is 0.
Preferably, the method further comprises a blind detection method for group information reception: the receiving side receives subframe #0 and/or subframe # 5; blind detection is carried out according to the PHICH numbers corresponding to the group 1 and the group 2 respectively so as to solve a target physical downlink control channel; and obtaining the uplink and downlink proportional relation indicated in the D-BCH from the target physical downlink control channel.
Preferably, the blind detection according to the number of the physical hybrid retransmission channels corresponding to the group 1 and the group 2 respectively specifically includes: blind detection was performed according to group 2 and then according to group 1.
The preferred embodiment described above constitutes a blind detection scheme.
Example 1
After the user starts up and completes synchronization, the user obtains antenna information, system bandwidth information and quantity indication information of a physical hybrid retransmission channel by solving a physical broadcast channel; then, in subframe #0 or subframe #5, blind detection is performed according to the condition that no PHICH exists, and then blind detection is performed according to the condition that the PHICH number is required by 2 uplink subframes. Therefore, the physical downlink control channel can be solved, and the information transmitted on the D-BCH can be solved according to the physical downlink control channel, so that the uplink and downlink proportional relation can be obtained.
Preferably, the transmitting side further includes the following method to transmit the uplink and downlink proportion information:
the method comprises the following steps:
constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits the group number signaling on a physical control format indication channel in the DwPTS.
Method two
Constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits a group signal signaling on the auxiliary synchronous channel; wherein, the 1-bit group number signaling is subjected to BPSK modulation to be multiplied by each value of the sequence of the secondary synchronization channel, and then the modulated secondary synchronization channel is transmitted.
Method III
Constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits a group signal signaling on a main synchronous channel; wherein, the 1-bit group signal is subjected to BPSK modulation and multiplied by each value of the sequence of the main synchronization channel, and the modulated main synchronization channel is transmitted.
Method IV
Constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the obtained group number signaling is 1 bit; the transmitting side transmits the group number signaling on the P-BCH.
Preferably, the above-mentioned transmission method further includes a group information reception detection method, and the steps are as follows:
the receiving side receives the group signal signaling on the corresponding channel;
resolving the indicated group number from the group number signaling;
and resolving the D-BCH on the subframe #0 or/and the subframe #5 according to the group number, and acquiring the indicated uplink and downlink proportional relation from the D-BCH.
Example 2
After the user starts up and completes synchronization, the user obtains antenna information, system bandwidth information and quantity indication information of a physical hybrid retransmission channel by solving a physical broadcast channel; then, the physical control format indication channel in the DwPTS is solved, and the group to which the current uplink and downlink proportional relationship belongs is obtained. Thereby, the maximum number of physical hybrid retransmission channels on subframe #0 and/or subframe #5 may be obtained; according to the number of the current physical hybrid retransmission channels, the physical downlink control channel can be solved, and then according to the physical downlink control channel, the information transmitted on the D-BCH can be solved, so that the uplink and downlink proportional relation can be obtained.
In the above scheme, all the uplink and downlink proportional relations are divided into 2 groups, and similarly, the embodiment of the present invention also provides a technical scheme for dividing all the uplink and downlink proportional relations into 3 groups. In the HARQ process configuration, when 1: 3 of 5ms period and 3: 5 of 10ms period correspond to different numbers of physical hybrid retransmission channels on subframe #0 or/and subframe #5, the HARQ process configuration is divided into 3 groups, and the HARQ process configuration is divided into 2 groups when the HARQ process configuration is the same; the scheme divided into 3 groups is described in detail below by way of examples.
The sending method comprises the following steps: dividing all the uplink and downlink proportional relations into 3 groups, and enabling the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth to be the same; carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through a D-BCH; and the transmitting side transmits the D-BCH on subframe #0 or \ and subframe # 5.
In the method, D-BCH is transmitted on a subframe #0 and/or a subframe # 5; information indicating a specific uplink and downlink ratio is carried through the D-BCH. The method for sending the uplink and downlink proportion information in the TDD system does not need to send the uplink and downlink proportion information on a P-BCH, thereby ensuring the consistency of the P-BCH of the TDD system and the P-BCH of the FDD system and avoiding the problem that the information cannot be obtained due to deadlock.
The following preferred embodiments are made with respect to grouping all uplink and downlink proportionality relationships into 3 groups.
Preferably, the dividing all the uplink and downlink proportional relationships into 3 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relationships in each group under the same bandwidth is the same specifically includes: 1: 3 of 5ms period is set 1, 3: 5 of 10ms period is set 2, and the rest proportion relation is set 3; the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 2 uplink subframes; the number of physical hybrid retransmission channels corresponding to the group 2 is the number of physical hybrid retransmission channels required by 1 uplink subframe; the number of physical hybrid retransmission channels corresponding to group 3 is 0.
Preferably, the method further comprises the following steps: the receiving side receives the subframe #0 or \ and the subframe # 5; blind detection is carried out according to the number of the physical hybrid retransmission channels corresponding to the group 1, the group 2 and the group 3 respectively so as to solve a target physical downlink control channel; and obtaining the uplink and downlink proportional relation indicated in the D-BCH from the target physical downlink control channel.
Preferably, the blind detection according to the number of the physical hybrid retransmission channels corresponding to the group 1, the group 2, and the group 3 specifically includes: blind detection is performed according to the group 2, then blind detection is performed according to the group 3, and finally blind detection is performed according to the group 1; or, the blind detection is performed according to the group 3, then the blind detection is performed according to the group 2, and finally the blind detection is performed according to the group 1.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits the group number signaling on a physical control format indication channel in the DwPTS. Wherein, a first bit is sent on a physical control format indication channel in a first DwPTS in a wireless frame, which indicates that the current group number is group 3 or group 1 and group 2; the physical control format indicates the second bit sent on the channel in the second DwPTS in a radio frame, indicating that the current group number is group 1 or group 2.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits a group signal signaling on the auxiliary synchronous channel; wherein a 2-bit group signal is QPSK-modulated by multiplying each value of a sequence of the secondary synchronization channel, and then the modulated secondary synchronization channel is transmitted.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits a group signal signaling on a main synchronous channel; in which a 2-bit group signal is QPSK-modulated by multiplying each value of a sequence of a primary synchronization channel, and then the modulated primary synchronization channel is transmitted.
Preferably, the method further comprises the following steps: constructing a group number signaling indicating the group number of the group to which the uplink and downlink proportional relation belongs, wherein the number of the groups is 3, and the obtained group number signaling is 2 bits; the transmitting side transmits the group number signaling on the P-BCH.
Preferably, the method further comprises the following steps: the receiving side receives the group signal signaling on the corresponding channel; resolving the indicated group number from the group number signaling; and resolving the D-BCH on the subframe #0 or/and the subframe #5 according to the group number, and acquiring the indicated uplink and downlink proportional relation from the D-BCH.
Preferably, the transmitting side transmitting the D-BCH in the subframe #0 or \ and the subframe #5 specifically includes: the transmitting side transmits the D-BCH on subframe # 5.
In all the embodiments described above, it is preferable that the transmitting side transmits the D-BCH on subframe # 5.
Fig. 3 is a block diagram of an apparatus for transmitting uplink and downlink proportion information in a time division duplex system according to an embodiment of the present invention, including:
a grouping module 10, configured to divide all uplink and downlink proportional relationships into 2 groups, so that the maximum numbers of PHICHs corresponding to all uplink and downlink proportional relationships in each group under the same bandwidth are the same;
a first placement module 20, configured to carry an uplink and downlink proportional signaling indicating an uplink and downlink proportional relationship through a D-BCH;
and a second placing module 30 for transmitting the D-BCH on subframe #0 and/or subframe # 5.
The embodiment of the invention also provides a device for sending uplink and downlink proportion information in a time division duplex system, which comprises: the grouping module is used for grouping all the uplink and downlink proportional relations into 3 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth is the same; the first placement module is used for carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through the D-BCH; and the second placing module is used for sending the D-BCH on the subframe #0 or/and the subframe # 5.
From the above description, it can be seen that the method and apparatus for sending uplink and downlink proportion information in a TDD system according to the above embodiments do not need to send on a P-BCH, thereby ensuring consistency between the TDD system and the P-BCH of an FDD system, and avoiding the problem that information cannot be obtained due to deadlock.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and they may alternatively be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or fabricated separately as individual integrated circuit modules, or fabricated as a single integrated circuit module from multiple modules or steps. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (21)
1. A method for sending uplink and downlink proportion information in a time division duplex system is characterized by comprising the following steps:
dividing all the uplink and downlink proportional relations into 2 groups, and enabling the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth to be the same;
carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through a D-BCH; and
the transmitting side transmits D-BCH on subframe #0 or \ and subframe # 5.
2. The sending method of claim 1, wherein the dividing of all the uplink and downlink proportional relationships into 2 groups, and the making of the same maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relationships in each group under the same bandwidth specifically comprises:
1: 3 of the 5ms period is set 1, and the rest proportion relation is set 2; wherein, the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 2 uplink subframes; the number of physical hybrid retransmission channels corresponding to the group 2 is 0; or,
1: 3 of 5ms period and 3: 5 of 10ms period are set 1, and the rest proportion relation is set 2; wherein, the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 1 uplink subframe; the number of physical hybrid retransmission channels corresponding to group 2 is 0.
3. The transmission method of claim 2, further comprising:
the receiving side receives the subframe #0 or \ and the subframe # 5;
blind detection is carried out according to the number of the physical hybrid retransmission channels corresponding to the group 1 and the group 2 respectively so as to solve a target physical downlink control channel;
and obtaining the uplink and downlink proportional relation indicated in the D-BCH from the target physical downlink control channel.
4. The method according to claim 3, wherein the blind detection according to the number of physical hybrid retransmission channels corresponding to group 1 and group 2 respectively comprises: and carrying out blind detection according to the group 2, and then carrying out blind detection according to the group 1.
5. The transmission method of claim 2, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the group number signaling is 1 bit;
and the transmitting side transmits the group signal signaling on a physical control format indication channel in the DwPTS.
6. The transmission method of claim 2, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the group number signaling is 1 bit;
the sending side sends the group signal signaling on a secondary synchronization channel;
wherein the 1-bit group number signaling is subjected to BPSK modulation to be multiplied by each value of the sequence of the secondary synchronization channel, and then the modulated secondary synchronization channel is transmitted.
7. The transmission method of claim 2, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the group number signaling is 1 bit;
the transmitting side transmits the group signal signaling on a primary synchronization channel;
wherein the 1-bit group number signaling is subjected to BPSK modulation and multiplied by each value of the sequence of the main synchronization channel, and the modulated main synchronization channel is transmitted.
8. The transmission method of claim 2, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relation belongs, wherein the number of the groups is 2, and the group number signaling is 1 bit;
and the transmitting side transmits the group number signaling on a P-BCH.
9. The transmission method according to any one of claims 5 to 8, further comprising:
the receiving side receives the group number signaling on a corresponding channel;
resolving the indicated group number from the group number signaling;
and resolving the D-BCH on the subframe #0 or/and the subframe #5 according to the group number, and acquiring the indicated uplink and downlink proportional relation from the D-BCH.
10. A method for sending uplink and downlink proportion information in a time division duplex system is characterized by comprising the following steps:
dividing all the uplink and downlink proportional relations into 3 groups, and enabling the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth to be the same;
carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through a D-BCH; and
the transmitting side transmits D-BCH on subframe #0 or \ and subframe # 5.
11. The method of claim 10, wherein the dividing all the uplink and downlink proportionality relations into 3 groups, and the making of the same maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportionality relations in each group under the same bandwidth specifically comprises:
1: 3 of 5ms period is set 1, 3: 5 of 10ms period is set 2, and the rest proportion relation is set 3;
wherein, the number of physical hybrid retransmission channels corresponding to the group 1 is the number of physical hybrid retransmission channels required by 2 uplink subframes; the number of physical hybrid retransmission channels corresponding to the group 2 is the number of physical hybrid retransmission channels required by 1 uplink subframe; the number of physical hybrid retransmission channels corresponding to the group 3 is 0.
12. The transmission method of claim 11, further comprising:
the receiving side receives the subframe #0 or \ and the subframe # 5;
blind detection is carried out according to the number of the physical hybrid retransmission channels corresponding to the group 1, the group 2 and the group 3 respectively so as to solve a target physical downlink control channel;
and obtaining the uplink and downlink proportional relation indicated in the D-BCH from the target physical downlink control channel.
13. The method according to claim 12, wherein the performing the blind detection according to the number of the physical hybrid retransmission channels corresponding to the group 1, the group 2, and the group 3 respectively comprises: performing blind detection according to the group 2, performing blind detection according to the group 3, and performing blind detection according to the group 1; or, the blind detection is performed according to the group 3, then the blind detection is performed according to the group 2, and finally the blind detection is performed according to the group 1.
14. The transmission method of claim 11, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relationship belongs, wherein the group number signaling is 2 bits obtained by the number of 3 groups;
the transmitting side transmits the group signal signaling on a physical control format indication channel in the DwPTS;
wherein, a first bit is sent on a physical control format indication channel in a first DwPTS in a wireless frame, which indicates that the current group number is group 3 or group 1 and group 2; the physical control format indicates the second bit sent on the channel in the second DwPTS in a radio frame, indicating that the current group number is group 1 or group 2.
15. The transmission method of claim 11, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relationship belongs, wherein the group number signaling is 2 bits obtained by the number of 3 groups;
the sending side sends the group signal signaling on a secondary synchronization channel;
wherein the 2-bit group number signaling is multiplied by each value of the sequence of the secondary synchronization channel through QPSK modulation, and then the modulated secondary synchronization channel is transmitted.
16. The transmission method of claim 11, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relationship belongs, wherein the group number signaling is 2 bits obtained by the number of 3 groups;
the transmitting side transmits the group signal signaling on a primary synchronization channel;
wherein the 2-bit group number signaling is multiplied by each value of the sequence of the primary synchronization channel through QPSK modulation, and then the modulated primary synchronization channel is transmitted.
17. The transmission method of claim 11, further comprising:
constructing a group number signaling indicating a group number of a group to which an uplink and downlink proportional relationship belongs, wherein the group number signaling is 2 bits obtained by the number of 3 groups;
and the transmitting side transmits the group number signaling on a P-BCH.
18. The transmission method according to any one of claims 14 to 17, further comprising:
the receiving side receives the group number signaling on a corresponding channel;
resolving the indicated group number from the group number signaling;
and resolving the D-BCH on the subframe #0 or/and the subframe #5 according to the group number, and acquiring the indicated uplink and downlink proportional relation from the D-BCH.
19. The transmission method of any one of claims 1 to 18, wherein the transmitting side transmitting the D-BCH in subframe #0 or \ and subframe #5 specifically comprises:
the transmitting side transmits a D-BCH on subframe # 5.
20. An apparatus for transmitting uplink and downlink ratio information in a time division duplex system, comprising:
the grouping module is used for grouping all the uplink and downlink proportional relations into 2 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth is the same;
the first placement module is used for carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through the D-BCH;
and the second placing module is used for sending the D-BCH on the subframe #0 or/and the subframe # 5.
21. An apparatus for transmitting uplink and downlink ratio information in a time division duplex system, comprising:
the grouping module is used for grouping all the uplink and downlink proportional relations into 3 groups, so that the maximum number of the physical hybrid retransmission channels corresponding to all the uplink and downlink proportional relations in each group under the same bandwidth is the same;
the first placement module is used for carrying an uplink and downlink proportional signaling indicating the uplink and downlink proportional relationship through the D-BCH;
and the second placing module is used for sending the D-BCH on the subframe #0 or/and the subframe # 5.
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| CN 200810084057 CN101262322B (en) | 2008-03-21 | 2008-03-21 | Transmission method and device for uplink and downlink percent information in time division duplex system |
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| CN 200810084057 CN101262322B (en) | 2008-03-21 | 2008-03-21 | Transmission method and device for uplink and downlink percent information in time division duplex system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102480348A (en) * | 2010-11-29 | 2012-05-30 | 中兴通讯股份有限公司 | Data transmission method and communication node |
| CN102685872A (en) * | 2011-03-11 | 2012-09-19 | 华为技术有限公司 | Communication method and device for time division duplex system |
| WO2013159304A1 (en) * | 2012-04-26 | 2013-10-31 | Nokia Siemens Networks Oy | Switching between downlink and uplink |
| CN101729136B (en) * | 2008-10-21 | 2014-03-12 | 华为技术有限公司 | Method, device and system for receiving control information |
| CN105101238A (en) * | 2014-05-07 | 2015-11-25 | 电信科学技术研究院 | Adjacent cell interference signal information notification method, adjacent cell interference inhibition method, and device |
| WO2016019750A1 (en) * | 2014-08-08 | 2016-02-11 | 中国移动通信集团公司 | Method, apparatus and system for network-assisted terminal blind detection, and related device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60044436D1 (en) * | 2000-11-03 | 2010-07-01 | Sony Deutschland Gmbh | Transmission power control for OFDM communication links |
| CN1198419C (en) * | 2003-01-16 | 2005-04-20 | 大唐移动通信设备有限公司 | Control method based on power of down doing guidance time slot |
| CN100399847C (en) * | 2005-02-24 | 2008-07-02 | 大唐移动通信设备有限公司 | Method for measuring adjacent cell |
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| CN101729136B (en) * | 2008-10-21 | 2014-03-12 | 华为技术有限公司 | Method, device and system for receiving control information |
| CN102480348A (en) * | 2010-11-29 | 2012-05-30 | 中兴通讯股份有限公司 | Data transmission method and communication node |
| CN102685872A (en) * | 2011-03-11 | 2012-09-19 | 华为技术有限公司 | Communication method and device for time division duplex system |
| CN102685872B (en) * | 2011-03-11 | 2015-01-21 | 华为技术有限公司 | Communication method and device for time division duplex system |
| US9444513B2 (en) | 2011-03-11 | 2016-09-13 | Huawei Technologies Co., Ltd. | Communication method and device for dynamic adjustment of downlink-uplink subframe configuration in a time division duplex system |
| WO2013159304A1 (en) * | 2012-04-26 | 2013-10-31 | Nokia Siemens Networks Oy | Switching between downlink and uplink |
| US9635653B2 (en) | 2012-04-26 | 2017-04-25 | Nokia Solutions And Networks Oy | Switching between downlink and uplink |
| CN105101238A (en) * | 2014-05-07 | 2015-11-25 | 电信科学技术研究院 | Adjacent cell interference signal information notification method, adjacent cell interference inhibition method, and device |
| CN105101238B (en) * | 2014-05-07 | 2018-11-27 | 电信科学技术研究院 | Adjacent area interference signal information notice method, method for inhibiting interference of neighborhood and device |
| WO2016019750A1 (en) * | 2014-08-08 | 2016-02-11 | 中国移动通信集团公司 | Method, apparatus and system for network-assisted terminal blind detection, and related device |
| WO2016127412A1 (en) * | 2015-02-13 | 2016-08-18 | 华为技术有限公司 | Pbch retransmission method and base station |
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| CN101262322B (en) | 2013-02-27 |
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