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一、RRM及用途 RRM(Radio resource management-無線資源管理)是無線通信系統(tǒng)(如蜂窩網(wǎng)絡(luò)、無線局域網(wǎng)、無線傳感器系統(tǒng)和無線電廣播網(wǎng)絡(luò))中同信道干擾、無線資源和其他無線傳輸系統(tǒng)級管理。 RRM用于發(fā)射功率控制、用戶分配、波束成形、數(shù)據(jù)速率、切換標準、調(diào)制方案、錯誤編碼方案等參數(shù)的策略和算法。其目標是利用有限的無線頻譜資源和網(wǎng)絡(luò)基礎(chǔ)設(shè)施提供盡可能高效服務(wù)。 二、RRM特點 RRM關(guān)注多用戶和多小區(qū)網(wǎng)絡(luò)容量問題，而不是點對點信道容量。高效的動態(tài)RRM方案可以將系統(tǒng)頻譜效率提高一個數(shù)量級，其通常比通過引入先進的信道編碼和信源編碼方案所能達到的效果要高得多。 RRM在受同信道干擾而非噪聲限制的系統(tǒng)中尤其重要，例如蜂窩系統(tǒng)和均勻覆蓋大面積的廣播網(wǎng)絡(luò)，以及由許多可能重用相同信道頻率的相鄰接入點組成的無線網(wǎng)絡(luò)。 三、5G網(wǎng)絡(luò)中應(yīng)用 在5G網(wǎng)絡(luò)中RRM基于終端(UE)對無線資源的管理，由網(wǎng)絡(luò)為終端進行靈活分配和動態(tài)調(diào)整無線(傳輸)資源；最大程度提高無線頻譜利用率，防止網(wǎng)絡(luò)擁塞并保持盡可能小的信令負荷。 5G(NR)???非獨立組網(wǎng)(NSA)和獨立組網(wǎng)(SA)兩種架構(gòu)，無線資源管理中的測量要求也各不相同，具體要求如下
四、5G網(wǎng)絡(luò)RRM之無線資源管理示例 5G網(wǎng)絡(luò)中終端對無線小區(qū)的資源通過其請求，網(wǎng)絡(luò)側(cè)進行配置；其流程如下:
4.1. UE測量觸發(fā)的重配置請求(UE_MEAS_TRIG_RECFG_REQUEST) detailDecodeResult ue_meas_trig_recfg_request(UE測量觸發(fā)的重配置請求) header phy_cell_l3_id = 3(物理小區(qū)Layer3 ID=3) bpf_ue_id = 11888(BPF-UE ID=11888) drx_cycle(DRX配置） long_drx_cycle = 3(DRX長周期=3） drx_config_ind = true(DRX配置=是） drx_selection_index（DRX選擇ID=1) value = 1 4.2. UE測量觸發(fā)的重配置(UE_MEAS_TRIG_RECFG_RESPONSE) detailDecodeResult ue_meas_trig_recfg_response header phy_cell_l3_id = 3(小區(qū)PCI=3) bpf_ue_id = 11888(BPF-UE ID=11888) serving_cell_config_dedicated(服務(wù)小區(qū)專用模式配置） inital_downlink_bwp（下行初始BWP) pdcch_config(PDCCH配置） setup control_resource_set_add_mod_list（控制資源集增加修改列表） [0] control_resource_set_id = 1（控制資源集ID=1) freq_domain_resource = 68719476735(頻域資源） duration = 1（周期=1） cce_reg_mapping_type（CCE與REG映射類型） interleave（間隙） reg_bundle_size = 2（REG BUNDLE尺寸=2） shift_index = null（偏移指示=NULL) tci_states_pdcch_to_add_list = [](PDCCH TCI狀態(tài)增加） pdcch_dmrs_scrambling_id(PDCCH DMRS繞碼ID=28986) value = 28986 tci_states_pdcch_to_release_list = [](PDCCH TCI狀態(tài)釋放） control_resource_set_release_list = []（控制資源集釋放列表） search_spaces_add_mod_list（搜索空間增加修改列表） [0] search_space_id = 2（搜索空間ID=2) control_resource_set_id(控制資源集ID=1) value = 1 monitor_slot_period_and_offset(時隙監(jiān)控周期及偏置） sl1 = null monitor_symbol_within_slot（slot內(nèi)符號監(jiān)測=8192） value = 8192 nr_of_candidates（NR候選） aggregation_level_1 = 4（聚合等級1=4） aggregation_level_2 = 4（聚合等級2=4） aggregation_level_4 = 4（聚合等級4=4） search_space_type（搜索類型） ue_specific（UE特定) dci_formats = 1 search_spaces_rel_list = []（搜索空間釋放） pdsch_config（PDSCH配置） setup dmrs_dl_for_pdsch_mapping_type_a（下行DMRS映射類型A) setup dmrs_type(DMRS映射類型 value = 1 dmrs_additional_pos(DMRS添加位置) value = 1 max_length = null(最大長度） srcambling_id0（擾碼ID 0=642) value = 642 scrambling_id1 (擾碼ID 1=28457) value = 28457 tci_states_add_mod_list = [] tci_states_release_list = [] resource_allocation = 1 time_allocation_list(時間分配列表） setup allocation_list（分配列表） [0]（NO.1) k0 = null（K0=null） start_symbol_and_length = 40（起始符號和長度=40） [1]（NO.2) k0 = null start_symbol_and_length = 54（起始符號和長度=50） [2]（NO.3) k0 = null start_symbol_and_length = 57（起始符號和長度=57） [3]（NO.4) k0 = null start_symbol_and_length = 27（起始符號和長度=27） [4]（NO.5) k0 = null start_symbol_and_length = 41（起始符號和長度=41） [5]（NO.6) k0 = null start_symbol_and_length = 70（起始符號和長度=70） [6]（NO.7) k0 value = 5(K0=5) start_symbol_and_length = 40（起始符號和長度=40) [7]（NO.8) k0 value = 5(K0=5) start_symbol_and_length = 54（起始符號和長度=54) [8]（NO.9) k0 = null start_symbol_and_length = 40（起始符號和長度=40) [9]（NO.10) k0 = null start_symbol_and_length = 40（起始符號和長度=40) [10]（NO.11) k0 = null start_symbol_and_length = 40（起始符號和長度=40) [11]（NO.12) k0 = null start_symbol_and_length = 40（起始符號和長度=40) [12]（NO.13) k0 = null start_symbol_and_length = 40（起始符號和長度=40) [13]（NO.14) k0 = null start_symbol_and_length = 29（起始符號和長度=29) [14]（NO.15) k0 = null start_symbol_and_length = 40（起始符號和長度=40) [15]（NO.16) k0 = null start_symbol_and_length = 40（起始符號和長度=40) mcs_table = null(MCS表選取） max_code_words_schedule_by_dci = null(DCI 碼本與字調(diào)度） prb_bundling_type(PRB bundling類型） static = null rate_match_pattern_add_mod_list = []（速率適配新增修改） rate_match_pattern_release_list = []（速率適配釋放） rate_match_pattern_group1 = []（速率適配組1） rate_match_pattern_group2 = []（速率適配組2） zp_csi_rs_resource_add_mod_list = []（ zp_csi_rs_resource_release_list = [] ap_zp_csi_rs_resource_set_add_mod_list = [] ap_zp_csi_rs_resource_set_release_list = [] sp_zp_csi_rs_resource_set_add_mod_list = [] sp_zp_csi_rs_resource_set_release_list = [] downlink_bwp_release_list = [] downlink_bwp_add_mod_list = [] first_active_downlink_bwp_id = null（下行首個激活BWP id） uplink_config（上行配置） initial_uplink_bwp（初始上行BWP) pucch_config(PUCCH配置） setup resource_set_add_mod_list [0] resources_id_list [0] = 0 [1] = 1 [2] = 2 [3] = 3 [4] = 4 [5] = 5 [6] = 6 [7] = 7 [1] pucch_resource_set_id = 1 resources_id_list [0] = 8 [1] = 9 [2] = 10 [3] = 11 [4] = 25 maxPayLoadMinus1 value = 80 resource_set_release_list = [] resource_to_add_mod_list [0] pucch_resource_id = 26 starting_prb = 10 format3 nr_of_prbs = 1 nr_of_symbols = 14 [1] pucch_resource_id = 25 starting_prb = 10 format3 nr_of_prbs = 1 nr_of_symbols = 14 [2] pucch_resource_id = 27 starting_prb = 10 format3 nr_of_prbs = 1 nr_of_symbols = 14 [3] starting_prb = 19 format1 initial_cycle_shift = 4 nr_of_symbols = 14 time_domain_occ = 4 [4] pucch_resource_id = 1 starting_prb = 19 format1 initial_cycle_shift = 3 nr_of_symbols = 14 time_domain_occ = 3 [5] pucch_resource_id = 2 starting_prb = 18 format1 initial_cycle_shift = 3 nr_of_symbols = 14 time_domain_occ = 3 [6] pucch_resource_id = 3 starting_prb = 17 format1 initial_cycle_shift = 3 nr_of_symbols = 14 time_domain_occ = 3 [7] pucch_resource_id = 4 starting_prb = 19 format1 nr_of_symbols = 14 time_domain_occ = 3 [8] pucch_resource_id = 5 starting_prb = 18 format1 nr_of_symbols = 14 time_domain_occ = 3 [9] pucch_resource_id = 6 starting_prb = 17 format1 nr_of_symbols = 14 time_domain_occ = 3 [10] pucch_resource_id = 7 starting_prb = 19 format1 initial_cycle_shift = 1 nr_of_symbols = 14 time_domain_occ = 5 [11] pucch_resource_id = 8 starting_prb = 29 format3 nr_of_prbs = 1 nr_of_symbols = 14 [12] pucch_resource_id = 9 starting_prb = 28 format3 nr_of_prbs = 1 nr_of_symbols = 14 [13] pucch_resource_id = 10 starting_prb = 27 format3 nr_of_prbs = 1 nr_of_symbols = 14 [14] pucch_resource_id = 11 starting_prb = 26 format3 nr_of_prbs = 1 nr_of_symbols = 14 [15] pucch_resource_id = 16 starting_prb = 16 format1 initial_cycle_shift = 6 nr_of_symbols = 14 time_domain_occ = 3 resource_to_release_list = [] format1 setup = null format3 setup max_code_rate value = 3 simultaneous_harq_ack_csi = null format4 setup max_code_rate value = 3 simultaneous_harq_ack_csi = null scheduling_request_resource_add_mod_list [0] scheduling_request_resource_id = 1 periodicity_and_offset sl10 value = 9 pucch_resource_id value = 16 scheduling_request_resource_release_list = [] multi_csi_pucch_resource_list [0] = 27 dl_data_to_ul_ack [0] = 2 [1] = 3 [2] = 4 [3] = 5 [4] = 6 [5] = 7 [6] = 8 spatial_relation_info_add_mod_list = [] spatial_relation_into_release_list = [] pucch_power_control deltaf_pucch_f0 = null deltaf_pucch_f1 value = -3 deltaf_pucch_f2 value = 6 deltaf_pucch_f3 = null deltaf_pucch_f4 = null p0_set [0] p0_pucch_id = 1 p0_pucch_value = null pucch_pathloss_reference_rs [0] csi_rs_index = 0 pusch_config setup tx_config = null dmrs_uplink_for_pusch_mapping_type_a setup dmrs_type = null dmrs_additional_pos value = 1 max_length = null transform_precoding_disabled scrambling_id1 value = 642 scrambling_id2 value = 642 pusch_power_control msg3_alpha value = 5 p0_nominal_without_grant value = -86 p0_alpha_sets [0] p0 = null alpha value = 5 pathloss_reference_rs_add_mod_list [0] csi_rs_index = 0 pathloss_reference_rs_release_list = [] delta_mcs value = 1 sri_pusch_mapping_add_mod_list = [] sri_pusch_mapping_release_list = [] frequency_hopping_offset_list = [] resource_allocation = 1 time_allocation_list setup allocation_list [0] k2 value = 1 start_symbol_and_length = 27 [1] k2 value = 2 start_symbol_and_length = 27 [2] k2 value = 3 start_symbol_and_length = 27 [3] k2 value = 4 start_symbol_and_length = 27 [4] k2 value = 5 start_symbol_and_length = 27 [5] k2 value = 6 start_symbol_and_length = 27 [6] k2 value = 7 start_symbol_and_length = 27 [7] k2 value = 2 start_symbol_and_length = 55 [8] k2 value = 3 start_symbol_and_length = 55 [9] k2 value = 4 start_symbol_and_length = 55 [10] k2 value = 5 start_symbol_and_length = 55 [11] k2 value = 9 start_symbol_and_length = 27 pusch_aggregaton_factor = null mcs_table = null transform_precoder value = 1 codebook_subset value = 2 maxrank value = 2 uci_on_pusch setup semi_static beta_offset_ack_index1 value = 9 beta_offset_ack_index2 value = 7 beta_offset_ack_index3 value = 7 beta_offset_csi_part1_index1 value = 14 beta_offset_csi_part1_index2 value = 14 beta_offset_csi_part2_index1 value = 14 beta_offset_csi_part2_index2 value = 14 srs_config（SRS配置） setup srs_res_set_add_mod_list [0] srs_resource_id_list [0] = 0 [1] = 1 periodic = null usage = 3 alpha value = 5 p0 value = -76 path_loss_ref_rs csirs_index = 0 [1] srs_resource_set_id = 1 srs_resource_id_list [0] = 0 periodic = null usage = 1 alpha value = 5 p0 value = -76 path_loss_ref_rs csirs_index = 0 srs_res_set_release_list = [] srs_res_add_mod_list [0] srs_port = 1（SRS端口） n4 = null resource_mapping（資源映射） startPosition = 1（起始位置=1） freq_hopping（跳頻） cSrs = 63 bSrs = 1 sequence_id = 642（序列 ID=642) periodic(周期） srs_periodicity_and_offset sl160 = 27 [1] srs_resource_id = 1 srs_port = 1 n4 = null resource_mapping startPosition = 1 freq_hopping cSrs = 63 bSrs = 1 sequence_id = 642 periodic srs_periodicity_and_offset sl160 = 107 srs_res_rel_list = [] tpcAccumulation = null uplink_bwp_release_list = [] uplink_bwp_add_mod_list = [] first_active_uplink_bwp_id = null pusch_servingcell_config setup max_mimo_layers value = 2 uplink_channelbw_perscs_list = [] pdsch_servingcell_config setup nr_of_harq_process_for_pdsch value = 5 max_mimo_layers value = 4 max_mimo_layers_indication = true csi_meas_config setup nzp_csi_rs_res_add_mod_list [0] csi_rs_resource_mapping frequency_domain_alloc row1 = 1 first_ofdm_symb_in_time_domain = 13 csi_rs_density three = null csi_rs_freq_band rbnum = 272 power_ctl_offset_ss value = 1 scrambling_id = 642 nzp_csi_rs_period_and_offset slot40 = 1 [1] nzp_csi_rs_resource_id = 36 csi_rs_resource_mapping frequency_domain_alloc other = 15 first_ofdm_symb_in_time_domain = 13 nr_of_csi_ports = 3 cdm_type = 1 csi_rs_density one = null csi_rs_freq_band rbnum = 272 power_ctl_offset_ss value = 1 scrambling_id = 678 nzp_csi_rs_period_and_offset slot40 = 0 [2] nzp_csi_rs_resource_id = 37 csi_rs_resource_mapping frequency_domain_alloc other = 15 first_ofdm_symb_in_time_domain = 13 nr_of_csi_ports = 3 cdm_type = 1 csi_rs_density one = null csi_rs_freq_band rbnum = 272 power_ctl_offset_ss value = 1 scrambling_id = 679 nzp_csi_rs_period_and_offset slot40 = 10 nzp_csi_rs_res_release_list = [] nzp_csi_rs_res_set_add_mod_list [0] nzp_csi_rs_resource_id [0] = 0 [1] nzp_csi_rs_resource_set_id = 2 nzp_csi_rs_resource_id [0] = 36 [1] = 37 nzp_csi_rs_res_set_release_list = [] csi_ssb_res_set_add_mod_list [0] csi_ssb_resource_set_id = 1 csi_ssb_resource_list [0] = 0 [1] = 1 [2] = 2 [3] = 3 [4] = 4 [5] = 5 [6] = 6 [7] = 7 csi_ssb_res_set_release_list = [] csi_res_config_add_mod_list [0] csi_rs_res_set_list nzp_csi_rs_ssb nzp_csi_rs_res_set_id_list [0] = 0 csi_ssb_res_set_id_list = [] csi_resoure_type = 2 [1] csi_resource_config_id = 1 csi_rs_res_set_list nzp_csi_rs_ssb nzp_csi_rs_res_set_id_list = [] csi_ssb_res_set_id_list [0] = 1 csi_resoure_type = 2 [2] csi_resource_config_id = 2 csi_rs_res_set_list nzp_csi_rs_ssb nzp_csi_rs_res_set_id_list [0] = 2 csi_ssb_res_set_id_list = [] csi_resoure_type = 2 [3] csi_resource_config_id = 4 csi_rs_res_set_list csi_im_res_set_list csi_im_res_id_list [0] = 0 csi_resoure_type = 2 csi_res_config_release_list = [] csi_report_config_add_mod_list [0] resources_for_channel_meas = 1 report_config_type csi_report_periodic csi_report_slot_config slot160 = 28 pucch_csi_resource_list [0] pucch_resource_id = 25 report_quantity ssb_index_rsrp = null report_freq_configuration cqi_format_indicator = null csi_reporting_band subbands18 = 262143 time_restric_for_channel_meas = 1 time_restric_for_inter_meas = 1 nr_of_cqis_per_report = null group_based_beam_reporting beam_disabled nr_of_reported_rs = null cqi_table value = 1 [1] csi_report_config_id = 4 resources_for_channel_meas = 2 csi_im_resources_for_interference value = 4 report_config_type csi_report_periodic csi_report_slot_config slot160 = 28 pucch_csi_resource_list [0] pucch_resource_id = 26 report_quantity cri_ri_pmi_cqi = null report_freq_configuration cqi_format_indicator = null pmi_format_indicator = null csi_reporting_band subbands18 = 131071 time_restric_for_channel_meas = 1 time_restric_for_inter_meas = 1 nr_of_cqis_per_report = null group_based_beam_reporting beam_disabled = null cqi_table value = 1 codebook_config type1 sub_type type1_single_panel ri_restriction = 15 more_than_two four_one_TypeI_SinglePanel_Restriction = 65535 code_book_mode = 1 csi_report_config_release_list = [] csi_im_res_add_mod_list [0] csi_im_resource_pattern pattern1 sub_carrier_location_p1 = 2 symbol_location_p1 = 13 csi_im_freq_band rbnum = 272 periodicity_and_offset slot40 = 2 [1] csi_im_resource_id = 1 csi_im_resource_pattern pattern1 sub_carrier_location_p1 = 2 symbol_location_p1 = 13 csi_im_freq_band rbnum = 272 periodicity_and_offset slot40 = 2 csi_im_res_release_list = [] csi_im_res_set_add_mod_list [0] csi_im_resource_id [0] = 0 [1] = 1 csi_im_res_set_release_list = [] pmi_meas_cfg_index = null rate_match_pattern_add_mod_list = [] rate_match_pattern_release_list = [] downlink_channelbw_perscs_list = [] mac_cell_group_config tag_config tag_to_release_list = [] tag_to_add_mod_list [0] time_alignment_timer = 7 bsr_config period_bsr_timer = 1 retx_bsr_timer = 5 phr_config setup periodic_phr_timer = 3 prohibit_phr_timer = 4 tx_power_factor_change = 1 drx_config setup drx_onduration_timer millli_seconds = 7 drx_inactivity_timer = 8 drx_harg_rtt_timer_dl = 56 drx_harg_rtt_timer_ul = 56 drx_retransmission_timer_dl = 6 drx_retransmission_timer_ul = 6 drx_long_cycle_start_offset ms40 = 9 drx_slot_offset = 16 scheduling_request_config scheduling_request_to_add_mod_list [0] sr_prohibit_timer value = 3 sr_trans_max = 4 scheduling_request_to_Release_list = [] recfg_indication value = 12 bwp_cfg_type = null
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